May 2025 - Linux-stable-mirror

FAILED: patch "[PATCH] iio: adc: ad7266: Fix potential timestamp alignment issue." failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 52d349884738c346961e153f195f4c7fe186fcf4 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051225-rind-sphinx-b9f1@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 52d349884738c346961e153f195f4c7fe186fcf4 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> Date: Sun, 13 Apr 2025 11:34:24 +0100 Subject: [PATCH] iio: adc: ad7266: Fix potential timestamp alignment issue. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On architectures where an s64 is only 32-bit aligned insufficient padding would be left between the earlier elements and the timestamp. Use aligned_s64 to enforce the correct placement and ensure the storage is large enough. Fixes: 54e018da3141 ("iio:ad7266: Mark transfer buffer as __be16") # aligned_s64 is much newer. Reported-by: David Lechner <dlechner(a)baylibre.com> Reviewed-by: Nuno Sá <nuno.sa(a)analog.com> Reviewed-by: David Lechner <dlechner(a)baylibre.com> Link: https://patch.msgid.link/20250413103443.2420727-2-jic23@kernel.org Cc: <Stable(a)vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 18559757f908..7fef2727f89e 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -45,7 +45,7 @@ struct ad7266_state { */ struct { __be16 sample[2]; - s64 timestamp; + aligned_s64 timestamp; } data __aligned(IIO_DMA_MINALIGN); };

5 months, 4 weeks

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FAILED: patch "[PATCH] iio: adc: ad7266: Fix potential timestamp alignment issue." failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 52d349884738c346961e153f195f4c7fe186fcf4 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051225-shell-xbox-704b@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 52d349884738c346961e153f195f4c7fe186fcf4 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> Date: Sun, 13 Apr 2025 11:34:24 +0100 Subject: [PATCH] iio: adc: ad7266: Fix potential timestamp alignment issue. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On architectures where an s64 is only 32-bit aligned insufficient padding would be left between the earlier elements and the timestamp. Use aligned_s64 to enforce the correct placement and ensure the storage is large enough. Fixes: 54e018da3141 ("iio:ad7266: Mark transfer buffer as __be16") # aligned_s64 is much newer. Reported-by: David Lechner <dlechner(a)baylibre.com> Reviewed-by: Nuno Sá <nuno.sa(a)analog.com> Reviewed-by: David Lechner <dlechner(a)baylibre.com> Link: https://patch.msgid.link/20250413103443.2420727-2-jic23@kernel.org Cc: <Stable(a)vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 18559757f908..7fef2727f89e 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -45,7 +45,7 @@ struct ad7266_state { */ struct { __be16 sample[2]; - s64 timestamp; + aligned_s64 timestamp; } data __aligned(IIO_DMA_MINALIGN); };

5 months, 4 weeks

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FAILED: patch "[PATCH] iio: adc: ad7266: Fix potential timestamp alignment issue." failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 52d349884738c346961e153f195f4c7fe186fcf4 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051219-maybe-spilt-5bf6@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 52d349884738c346961e153f195f4c7fe186fcf4 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> Date: Sun, 13 Apr 2025 11:34:24 +0100 Subject: [PATCH] iio: adc: ad7266: Fix potential timestamp alignment issue. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On architectures where an s64 is only 32-bit aligned insufficient padding would be left between the earlier elements and the timestamp. Use aligned_s64 to enforce the correct placement and ensure the storage is large enough. Fixes: 54e018da3141 ("iio:ad7266: Mark transfer buffer as __be16") # aligned_s64 is much newer. Reported-by: David Lechner <dlechner(a)baylibre.com> Reviewed-by: Nuno Sá <nuno.sa(a)analog.com> Reviewed-by: David Lechner <dlechner(a)baylibre.com> Link: https://patch.msgid.link/20250413103443.2420727-2-jic23@kernel.org Cc: <Stable(a)vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron(a)huawei.com> diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 18559757f908..7fef2727f89e 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -45,7 +45,7 @@ struct ad7266_state { */ struct { __be16 sample[2]; - s64 timestamp; + aligned_s64 timestamp; } data __aligned(IIO_DMA_MINALIGN); };

5 months, 4 weeks

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[PATCH 6.1 000/569] 6.1.129-rc2 review

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.1.129 release. There are 569 patches in this series, all will be posted as a response to this one. If anyone has any issues with these being applied, please let me know. Responses should be made by Sat, 22 Feb 2025 10:44:04 +0000. Anything received after that time might be too late. The whole patch series can be found in one patch at: https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.1.129-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.1.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.1.129-rc2 David Woodhouse <dwmw(a)amazon.co.uk> x86/i8253: Disable PIT timer 0 when not in use Hersen Wu <hersenxs.wu(a)amd.com> drm/amd/display: Add NULL pointer check for kzalloc Chao Yu <chao(a)kernel.org> f2fs: fix to wait dio completion Romain Naour <romain.naour(a)skf.com> ARM: dts: dra7: Add bus_dma_limit for l4 cfg bus Hangbin Liu <liuhangbin(a)gmail.com> selftests: rtnetlink: update netdevsim ipsec output format Hangbin Liu <liuhangbin(a)gmail.com> netdevsim: print human readable IP address Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: fix netdev_priv() dereference before check on non-DSA netdevice events Jiaqing Zhao <jiaqing.zhao(a)linux.intel.com> parport_pc: add support for ASIX AX99100 Jiaqing Zhao <jiaqing.zhao(a)linux.intel.com> serial: 8250_pci: add support for ASIX AX99100 Jiaqing Zhao <jiaqing.zhao(a)linux.intel.com> can: ems_pci: move ASIX AX99100 ids to pci_ids.h Ryusuke Konishi <konishi.ryusuke(a)gmail.com> nilfs2: protect access to buffers with no active references Ryusuke Konishi <konishi.ryusuke(a)gmail.com> nilfs2: do not force clear folio if buffer is referenced Ryusuke Konishi <konishi.ryusuke(a)gmail.com> nilfs2: do not output warnings when clearing dirty buffers Kaixin Wang <kxwang23(a)m.fudan.edu.cn> i3c: master: cdns: Fix use after free vulnerability in cdns_i3c_master Driver Due to Race Condition Ivan Kokshaysky <ink(a)unseen.parts> alpha: replace hardcoded stack offsets with autogenerated ones Zhaoyang Huang <zhaoyang.huang(a)unisoc.com> mm: gup: fix infinite loop within __get_longterm_locked Sumit Gupta <sumitg(a)nvidia.com> arm64: tegra: Fix typo in Tegra234 dce-fabric compatible Lu Baolu <baolu.lu(a)linux.intel.com> iommu: Return right value in iommu_sva_bind_device() Andrew Cooper <andrew.cooper3(a)citrix.com> x86/static-call: Remove early_boot_irqs_disabled check to fix Xen PVH dom0 John Ogness <john.ogness(a)linutronix.de> kdb: Do not assume write() callback available Christian Gmeiner <cgmeiner(a)igalia.com> drm/v3d: Stop active perfmon if it is being destroyed Devarsh Thakkar <devarsht(a)ti.com> drm/tidss: Clear the interrupt status for interrupts being disabled Tomi Valkeinen <tomi.valkeinen(a)ideasonboard.com> drm/tidss: Fix issue in irq handling causing irq-flood issue Eric Dumazet <edumazet(a)google.com> ipv6: mcast: add RCU protection to mld_newpack() Eric Dumazet <edumazet(a)google.com> ndisc: extend RCU protection in ndisc_send_skb() Eric Dumazet <edumazet(a)google.com> openvswitch: use RCU protection in ovs_vport_cmd_fill_info() Eric Dumazet <edumazet(a)google.com> arp: use RCU protection in arp_xmit() Eric Dumazet <edumazet(a)google.com> neighbour: use RCU protection in __neigh_notify() Li Zetao <lizetao1(a)huawei.com> neighbour: delete redundant judgment statements Eric Dumazet <edumazet(a)google.com> ndisc: use RCU protection in ndisc_alloc_skb() Eric Dumazet <edumazet(a)google.com> ipv6: use RCU protection in ip6_default_advmss() Eric Dumazet <edumazet(a)google.com> flow_dissector: use RCU protection to fetch dev_net() Eric Dumazet <edumazet(a)google.com> ipv4: icmp: convert to dev_net_rcu() Eric Dumazet <edumazet(a)google.com> ipv4: use RCU protection in __ip_rt_update_pmtu() Vladimir Vdovin <deliran(a)verdict.gg> net: ipv4: Cache pmtu for all packet paths if multipath enabled Eric Dumazet <edumazet(a)google.com> ipv4: use RCU protection in inet_select_addr() Eric Dumazet <edumazet(a)google.com> ipv4: use RCU protection in rt_is_expired() Eric Dumazet <edumazet(a)google.com> ipv4: use RCU protection in ipv4_default_advmss() Eric Dumazet <edumazet(a)google.com> net: add dev_net_rcu() helper Jiri Pirko <jiri(a)nvidia.com> net: treat possible_net_t net pointer as an RCU one and add read_pnet_rcu() Eric Dumazet <edumazet(a)google.com> ipv4: add RCU protection to ip4_dst_hoplimit() Waiman Long <longman(a)redhat.com> clocksource: Use migrate_disable() to avoid calling get_random_u32() in atomic context Waiman Long <longman(a)redhat.com> clocksource: Use pr_info() for "Checking clocksource synchronization" message Filipe Manana <fdmanana(a)suse.com> btrfs: fix hole expansion when writing at an offset beyond EOF Wentao Liang <vulab(a)iscas.ac.cn> mlxsw: Add return value check for mlxsw_sp_port_get_stats_raw() Andy-ld Lu <andy-ld.lu(a)mediatek.com> mmc: mtk-sd: Fix register settings for hs400(es) mode Nathan Chancellor <nathan(a)kernel.org> arm64: Handle .ARM.attributes section in linker scripts Jiasheng Jiang <jiashengjiangcool(a)gmail.com> regmap-irq: Add missing kfree() Jann Horn <jannh(a)google.com> partitions: mac: fix handling of bogus partition table Wentao Liang <vulab(a)iscas.ac.cn> gpio: stmpe: Check return value of stmpe_reg_read in stmpe_gpio_irq_sync_unlock Mario Limonciello <mario.limonciello(a)amd.com> gpiolib: acpi: Add a quirk for Acer Nitro ANV14 Ivan Kokshaysky <ink(a)unseen.parts> alpha: align stack for page fault and user unaligned trap handlers John Keeping <jkeeping(a)inmusicbrands.com> serial: 8250: Fix fifo underflow on flush Shakeel Butt <shakeel.butt(a)linux.dev> cgroup: fix race between fork and cgroup.kill Ard Biesheuvel <ardb(a)kernel.org> efi: Avoid cold plugged memory for placing the kernel Ivan Kokshaysky <ink(a)unseen.parts> alpha: make stack 16-byte aligned (most cases) Alexander Hölzl <alexander.hoelzl(a)gmx.net> can: j1939: j1939_sk_send_loop(): fix unable to send messages with data length zero Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> can: c_can: fix unbalanced runtime PM disable in error path Fedor Pchelkin <pchelkin(a)ispras.ru> can: ctucanfd: handle skb allocation failure Johan Hovold <johan(a)kernel.org> USB: serial: option: drop MeiG Smart defines Fabio Porcedda <fabio.porcedda(a)gmail.com> USB: serial: option: fix Telit Cinterion FN990A name Fabio Porcedda <fabio.porcedda(a)gmail.com> USB: serial: option: add Telit Cinterion FN990B compositions Chester A. Unal <chester.a.unal(a)arinc9.com> USB: serial: option: add MeiG Smart SLM828 Jann Horn <jannh(a)google.com> usb: cdc-acm: Fix handling of oversized fragments Jann Horn <jannh(a)google.com> usb: cdc-acm: Check control transfer buffer size before access Marek Vasut <marek.vasut+renesas(a)mailbox.org> USB: cdc-acm: Fill in Renesas R-Car D3 USB Download mode quirk Alan Stern <stern(a)rowland.harvard.edu> USB: hub: Ignore non-compliant devices with too many configs or interfaces John Keeping <jkeeping(a)inmusicbrands.com> usb: gadget: f_midi: fix MIDI Streaming descriptor lengths Mathias Nyman <mathias.nyman(a)linux.intel.com> USB: Add USB_QUIRK_NO_LPM quirk for sony xperia xz1 smartphone Lei Huang <huanglei(a)kylinos.cn> USB: quirks: add USB_QUIRK_NO_LPM quirk for Teclast dist Stefan Eichenberger <stefan.eichenberger(a)toradex.com> usb: core: fix pipe creation for get_bMaxPacketSize0 Huacai Chen <chenhuacai(a)kernel.org> USB: pci-quirks: Fix HCCPARAMS register error for LS7A EHCI Fabrice Gasnier <fabrice.gasnier(a)foss.st.com> usb: dwc2: gadget: remove of_node reference upon udc_stop Guo Ren <guoren(a)kernel.org> usb: gadget: udc: renesas_usb3: Fix compiler warning Elson Roy Serrao <quic_eserrao(a)quicinc.com> usb: roles: set switch registered flag early on Selvarasu Ganesan <selvarasu.g(a)samsung.com> usb: dwc3: Fix timeout issue during controller enter/exit from halt state Sean Christopherson <seanjc(a)google.com> perf/x86/intel: Ensure LBRs are disabled when a CPU is starting Sean Christopherson <seanjc(a)google.com> KVM: nSVM: Enter guest mode before initializing nested NPT MMU Sean Christopherson <seanjc(a)google.com> KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel Jiang Liu <gerry(a)linux.alibaba.com> drm/amdgpu: avoid buffer overflow attach in smu_sys_set_pp_table() Sven Eckelmann <sven(a)narfation.org> batman-adv: Drop unmanaged ELP metric worker Sven Eckelmann <sven(a)narfation.org> batman-adv: Ignore neighbor throughput metrics in error case Andy Strohman <andrew(a)andrewstrohman.com> batman-adv: fix panic during interface removal Hans de Goede <hdegoede(a)redhat.com> ASoC: Intel: bytcr_rt5640: Add DMI quirk for Vexia Edu Atla 10 tablet 5V Mike Marshall <hubcap(a)omnibond.com> orangefs: fix a oob in orangefs_debug_write Rik van Riel <riel(a)fb.com> x86/mm/tlb: Only trim the mm_cpumask once a second Koichiro Den <koichiro.den(a)canonical.com> selftests: gpio: gpio-sim: Fix missing chip disablements Maksym Planeta <maksym(a)exostellar.io> Grab mm lock before grabbing pt lock Ramesh Thomas <ramesh.thomas(a)intel.com> vfio/pci: Enable iowrite64 and ioread64 for vfio pci Tomas Glozar <tglozar(a)redhat.com> rtla/timerlat_top: Abort event processing on second signal Tomas Glozar <tglozar(a)redhat.com> rtla/timerlat_hist: Abort event processing on second signal Guixin Liu <kanie(a)linux.alibaba.com> scsi: ufs: bsg: Set bsg_queue to NULL after removal Rakesh Babu Saladi <Saladi.Rakeshbabu(a)microchip.com> PCI: switchtec: Add Microchip PCI100X device IDs Takashi Iwai <tiwai(a)suse.de> PCI/DPC: Quirk PIO log size for Intel Raptor Lake-P Edward Adam Davis <eadavis(a)qq.com> media: vidtv: Fix a null-ptr-deref in vidtv_mux_stop_thread Arnd Bergmann <arnd(a)arndb.de> media: cxd2841er: fix 64-bit division on gcc-9 Aaro Koskinen <aaro.koskinen(a)iki.fi> fbdev: omap: use threaded IRQ for LCD DMA Michael Margolin <mrgolin(a)amazon.com> RDMA/efa: Reset device on probe failure Juergen Gross <jgross(a)suse.com> x86/xen: allow larger contiguous memory regions in PV guests Petr Tesarik <petr.tesarik.ext(a)huawei.com> xen: remove a confusing comment on auto-translated guest I/O Juergen Gross <jgross(a)suse.com> xen/swiotlb: relax alignment requirements Artur Weber <aweber.kernel(a)gmail.com> gpio: bcm-kona: Add missing newline to dev_err format string Artur Weber <aweber.kernel(a)gmail.com> gpio: bcm-kona: Make sure GPIO bits are unlocked when requesting IRQ Artur Weber <aweber.kernel(a)gmail.com> gpio: bcm-kona: Fix GPIO lock/unlock for banks above bank 0 Krzysztof Karas <krzysztof.karas(a)intel.com> drm/i915/selftests: avoid using uninitialized context Muhammad Adeel <Muhammad.Adeel(a)ibm.com> cgroup: Remove steal time from usage_usec Radu Rendec <rrendec(a)redhat.com> arm64: cacheinfo: Avoid out-of-bounds write to cacheinfo array Eric Dumazet <edumazet(a)google.com> team: better TEAM_OPTION_TYPE_STRING validation Eric Dumazet <edumazet(a)google.com> vxlan: check vxlan_vnigroup_init() return value Eric Dumazet <edumazet(a)google.com> vrf: use RCU protection in l3mdev_l3_out() Eric Dumazet <edumazet(a)google.com> ndisc: ndisc_send_redirect() must use dev_get_by_index_rcu() Murad Masimov <m.masimov(a)mt-integration.ru> ax25: Fix refcount leak caused by setting SO_BINDTODEVICE sockopt Tulio Fernandes <tuliomf09(a)gmail.com> HID: hid-thrustmaster: fix stack-out-of-bounds read in usb_check_int_endpoints() Charles Han <hanchunchao(a)inspur.com> HID: multitouch: Add NULL check in mt_input_configured Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> pinctrl: cy8c95x0: Respect IRQ trigger settings from firmware Dai Ngo <dai.ngo(a)oracle.com> NFSD: fix hang in nfsd4_shutdown_callback Li Lingfeng <lilingfeng3(a)huawei.com> nfsd: clear acl_access/acl_default after releasing them Filipe Manana <fdmanana(a)suse.com> btrfs: avoid monopolizing a core when activating a swap file Koichiro Den <koichiro.den(a)canonical.com> Revert "btrfs: avoid monopolizing a core when activating a swap file" Calvin Owens <calvin(a)wbinvd.org> pps: Fix a use-after-free Wei Yang <richard.weiyang(a)gmail.com> maple_tree: simplify split calculation Liam R. Howlett <Liam.Howlett(a)oracle.com> maple_tree: fix static analyser cppcheck issue Sean Anderson <sean.anderson(a)linux.dev> tty: xilinx_uartps: split sysrq handling Paolo Abeni <pabeni(a)redhat.com> mptcp: prevent excessive coalescing on receive Matthieu Baerts (NGI0) <matttbe(a)kernel.org> mptcp: pm: only set fullmesh for subflow endp Zizhi Wo <wozizhi(a)huawei.com> cachefiles: Fix NULL pointer dereference in object->file Su Yue <glass.su(a)suse.com> ocfs2: check dir i_size in ocfs2_find_entry Bartosz Golaszewski <bartosz.golaszewski(a)linaro.org> gpio: xilinx: remove excess kernel doc Paul Fertser <fercerpav(a)gmail.com> net/ncsi: use dev_set_mac_address() for Get MC MAC Address handling WangYuli <wangyuli(a)uniontech.com> MIPS: ftrace: Declare ftrace_get_parent_ra_addr() as static Pavel Begunkov <asml.silence(a)gmail.com> io_uring/rw: commit provided buffer state on async Pavel Begunkov <asml.silence(a)gmail.com> io_uring: fix io_req_prep_async with provided buffers Pavel Begunkov <asml.silence(a)gmail.com> io_uring: fix multishots with selected buffers Michal Simek <michal.simek(a)amd.com> rtc: zynqmp: Fix optional clock name property Thomas Weißschuh <linux(a)weissschuh.net> ptp: Ensure info->enable callback is always set Javier Carrasco <javier.carrasco.cruz(a)gmail.com> pinctrl: samsung: fix fwnode refcount cleanup if platform_get_irq_optional() fails Tomas Glozar <tglozar(a)redhat.com> rtla/timerlat_top: Stop timerlat tracer on signal Tomas Glozar <tglozar(a)redhat.com> rtla/timerlat_hist: Stop timerlat tracer on signal Tomas Glozar <tglozar(a)redhat.com> rtla: Add trace_instance_stop Tomas Glozar <tglozar(a)redhat.com> rtla/osnoise: Distinguish missing workload option Milos Reljin <milos_reljin(a)outlook.com> net: phy: c45-tjaxx: add delay between MDIO write and read in soft_reset Paul Fertser <fercerpav(a)gmail.com> net/ncsi: wait for the last response to Deselect Package before configuring channel Ekansh Gupta <quic_ekangupt(a)quicinc.com> misc: fastrpc: Fix copy buffer page size Ekansh Gupta <quic_ekangupt(a)quicinc.com> misc: fastrpc: Fix registered buffer page address Anandu Krishnan E <quic_anane(a)quicinc.com> misc: fastrpc: Deregister device nodes properly in error scenarios Ivan Stepchenko <sid(a)itb.spb.ru> mtd: onenand: Fix uninitialized retlen in do_otp_read() Nick Chan <towinchenmi(a)gmail.com> irqchip/apple-aic: Only handle PMC interrupt as FIQ when configured so Frank Li <Frank.Li(a)nxp.com> i3c: master: Fix missing 'ret' assignment in set_speed() Dan Carpenter <dan.carpenter(a)linaro.org> NFC: nci: Add bounds checking in nci_hci_create_pipe() Pekka Pessi <ppessi(a)nvidia.com> mailbox: tegra-hsp: Clear mailbox before using message Nikita Zhandarovich <n.zhandarovich(a)fintech.ru> nilfs2: fix possible int overflows in nilfs_fiemap() Matthew Wilcox (Oracle) <willy(a)infradead.org> ocfs2: handle a symlink read error correctly Heming Zhao <heming.zhao(a)suse.com> ocfs2: fix incorrect CPU endianness conversion causing mount failure Mike Snitzer <snitzer(a)kernel.org> pnfs/flexfiles: retry getting layout segment for reads Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: connect: -f: no reconnect Alex Williamson <alex.williamson(a)redhat.com> vfio/platform: check the bounds of read/write syscalls Jens Axboe <axboe(a)kernel.dk> io_uring/net: don't retry connect operation on EPOLLERR Jennifer Berringer <jberring(a)redhat.com> nvmem: core: improve range check for nvmem_cell_write() Luca Weiss <luca.weiss(a)fairphone.com> nvmem: qcom-spmi-sdam: Set size in struct nvmem_config Bartosz Golaszewski <bartosz.golaszewski(a)linaro.org> crypto: qce - unregister previously registered algos in error path Bartosz Golaszewski <bartosz.golaszewski(a)linaro.org> crypto: qce - fix goto jump in error path Niklas Cassel <cassel(a)kernel.org> ata: libata-sff: Ensure that we cannot write outside the allocated buffer Catalin Marinas <catalin.marinas(a)arm.com> mm: kmemleak: fix upper boundary check for physical address objects Ricardo Ribalda <ribalda(a)chromium.org> media: uvcvideo: Remove redundant NULL assignment Ricardo Ribalda <ribalda(a)chromium.org> media: uvcvideo: Fix event flags in uvc_ctrl_send_events Mehdi Djait <mehdi.djait(a)linux.intel.com> media: ccs: Fix cleanup order in ccs_probe() Sakari Ailus <sakari.ailus(a)linux.intel.com> media: ccs: Fix CCS static data parsing for large block sizes Sam Bobrowicz <sam(a)elite-embedded.com> media: ov5640: fix get_light_freq on auto Cosmin Tanislav <demonsingur(a)gmail.com> media: mc: fix endpoint iteration Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> soc: qcom: smem_state: fix missing of_node_put in error path Javier Carrasco <javier.carrasco.cruz(a)gmail.com> iio: light: as73211: fix channel handling in only-color triggered buffer Sakari Ailus <sakari.ailus(a)linux.intel.com> media: ccs: Clean up parsed CCS static data on parse failure Marco Elver <elver(a)google.com> kfence: skip __GFP_THISNODE allocations on NUMA systems Gabriele Monaco <gmonaco(a)redhat.com> rv: Reset per-task monitors also for idle tasks Aubrey Li <aubrey.li(a)linux.intel.com> ACPI: PRM: Remove unnecessary strict handler address checks Wentao Liang <vulab(a)iscas.ac.cn> xfs: Add error handling for xfs_reflink_cancel_cow_range Sumit Gupta <sumitg(a)nvidia.com> arm64: tegra: Disable Tegra234 sce-fabric node Eric Biggers <ebiggers(a)google.com> crypto: qce - fix priority to be less than ARMv8 CE Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> arm64: dts: qcom: sm8450: Fix MPSS memory length Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> arm64: dts: qcom: sm8350: Fix MPSS memory length Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> arm64: dts: qcom: sm6350: Fix MPSS memory length Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> arm64: dts: qcom: sm6350: Fix ADSP memory length Nathan Chancellor <nathan(a)kernel.org> x86/boot: Use '-std=gnu11' to fix build with GCC 15 Nathan Chancellor <nathan(a)kernel.org> kbuild: Move -Wenum-enum-conversion to W=2 Long Li <longli(a)microsoft.com> scsi: storvsc: Set correct data length for sending SCSI command without payload Quinn Tran <qutran(a)marvell.com> scsi: qla2xxx: Move FCE Trace buffer allocation to user control Georg Gottleuber <ggo(a)tuxedocomputers.com> nvme-pci: Add TUXEDO IBP Gen9 to Samsung sleep quirk Georg Gottleuber <ggo(a)tuxedocomputers.com> nvme-pci: Add TUXEDO InfinityFlex to Samsung sleep quirk Zijun Hu <quic_zijuhu(a)quicinc.com> PCI: endpoint: Finish virtual EP removal in pci_epf_remove_vepf() Brad Griffis <bgriffis(a)nvidia.com> arm64: tegra: Fix Tegra234 PCIe interrupt-map Kuan-Wei Chiu <visitorckw(a)gmail.com> ALSA: hda: Fix headset detection failure due to unstable sort Edson Juliano Drosdeck <edson.drosdeck(a)gmail.com> ALSA: hda/realtek: Enable headset mic on Positivo C6400 Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> Revert "media: uvcvideo: Require entities to have a non-zero unique ID" Jens Axboe <axboe(a)kernel.dk> block: don't revert iter for -EIOCBQUEUED Mateusz Jończyk <mat.jonczyk(a)o2.pl> mips/math-emu: fix emulation of the prefx instruction Hou Tao <houtao1(a)huawei.com> dm-crypt: track tag_offset in convert_context Hou Tao <houtao1(a)huawei.com> dm-crypt: don't update io->sector after kcryptd_crypt_write_io_submit() Narayana Murty N <nnmlinux(a)linux.ibm.com> powerpc/pseries/eeh: Fix get PE state translation Kexy Biscuit <kexybiscuit(a)aosc.io> MIPS: Loongson64: remove ROM Size unit in boardinfo Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> serial: sh-sci: Do not probe the serial port if its slot in sci_ports[] is in use Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> serial: sh-sci: Drop __initdata macro for port_cfg Stephan Gerhold <stephan.gerhold(a)linaro.org> soc: qcom: socinfo: Avoid out of bounds read of serial number Mario Limonciello <mario.limonciello(a)amd.com> ASoC: acp: Support microphone from Lenovo Go S Thinh Nguyen <Thinh.Nguyen(a)synopsys.com> usb: gadget: f_tcm: Don't prepare BOT write request twice Thinh Nguyen <Thinh.Nguyen(a)synopsys.com> usb: gadget: f_tcm: ep_autoconfig with fullspeed endpoint Thinh Nguyen <Thinh.Nguyen(a)synopsys.com> usb: gadget: f_tcm: Decrement command ref count on cleanup Thinh Nguyen <Thinh.Nguyen(a)synopsys.com> usb: gadget: f_tcm: Translate error to sense Marcel Hamer <marcel.hamer(a)windriver.com> wifi: brcmfmac: fix NULL pointer dereference in brcmf_txfinalize() Bitterblue Smith <rtl8821cerfe2(a)gmail.com> wifi: rtlwifi: rtl8821ae: Fix media status report Heiko Stuebner <heiko(a)sntech.de> HID: hid-sensor-hub: don't use stale platform-data on remove Zijun Hu <quic_zijuhu(a)quicinc.com> of: reserved-memory: Fix using wrong number of cells to get property 'alignment' Zijun Hu <quic_zijuhu(a)quicinc.com> of: Fix of_find_node_opts_by_path() handling of alias+path+options Zijun Hu <quic_zijuhu(a)quicinc.com> of: Correct child specifier used as input of the 2nd nexus node Bao D. Nguyen <quic_nguyenb(a)quicinc.com> scsi: ufs: core: Fix the HIGH/LOW_TEMP Bit Definitions Nathan Chancellor <nathan(a)kernel.org> efi: libstub: Use '-std=gnu11' to fix build with GCC 15 Zijun Hu <quic_zijuhu(a)quicinc.com> blk-cgroup: Fix class @block_class's subsystem refcount leakage Anastasia Belova <abelova(a)astralinux.ru> clk: qcom: clk-rpmh: prevent integer overflow in recalc_rate Satya Priya Kakitapalli <quic_skakitap(a)quicinc.com> clk: qcom: gcc-mdm9607: Fix cmd_rcgr offset for blsp1_uart6 rcg Luca Weiss <luca.weiss(a)fairphone.com> clk: qcom: dispcc-sm6350: Add missing parent_map for a clock Luca Weiss <luca.weiss(a)fairphone.com> clk: qcom: gcc-sm6350: Add missing parent_map for two clocks Gabor Juhos <j4g8y7(a)gmail.com> clk: qcom: clk-alpha-pll: fix alpha mode configuration Cody Eksal <masterr3c0rd(a)epochal.quest> clk: sunxi-ng: a100: enable MMC clock reparenting Fedor Pchelkin <pchelkin(a)ispras.ru> Bluetooth: L2CAP: accept zero as a special value for MTU auto-selection Fedor Pchelkin <pchelkin(a)ispras.ru> Bluetooth: L2CAP: handle NULL sock pointer in l2cap_sock_alloc Ville Syrjälä <ville.syrjala(a)linux.intel.com> drm/i915: Drop 64bpp YUV formats from ICL+ SDR planes Haoxiang Li <haoxiang_li2024(a)163.com> drm/komeda: Add check for komeda_get_layer_fourcc_list() Daniele Ceraolo Spurio <daniele.ceraolospurio(a)intel.com> drm/i915/guc: Debug print LRC state entries only if the context is pinned Tom Chung <chiahsuan.chung(a)amd.com> Revert "drm/amd/display: Use HW lock mgr for PSR1" Lijo Lazar <lijo.lazar(a)amd.com> drm/amd/pm: Mark MM activity as unsupported Dan Carpenter <dan.carpenter(a)linaro.org> ksmbd: fix integer overflows on 32 bit systems David Hildenbrand <david(a)redhat.com> KVM: s390: vsie: fix some corner-cases when grabbing vsie pages Sean Christopherson <seanjc(a)google.com> KVM: Explicitly verify target vCPU is online in kvm_get_vcpu() Jakob Unterwurzacher <jakobunt(a)gmail.com> arm64: dts: rockchip: increase gmac rx_delay on rk3399-puma Thomas Zimmermann <tzimmermann(a)suse.de> drm/rockchip: cdn-dp: Use drm_connector_helper_hpd_irq_event() Dan Carpenter <dan.carpenter(a)linaro.org> binfmt_flat: Fix integer overflow bug on 32 bit systems Nam Cao <namcao(a)linutronix.de> fs/proc: do_task_stat: Fix ESP not readable during coredump Thomas Zimmermann <tzimmermann(a)suse.de> m68k: vga: Fix I/O defines Heiko Carstens <hca(a)linux.ibm.com> s390/futex: Fix FUTEX_OP_ANDN implementation Meetakshi Setiya <msetiya(a)microsoft.com> smb: client: change lease epoch type from unsigned int to __u16 Maarten Lankhorst <dev(a)lankhorst.se> drm/modeset: Handle tiled displays in pan_display_atomic. Sebastian Wiese-Wagner <seb(a)fastmail.to> ALSA: hda/realtek: Enable Mute LED on HP Laptop 14s-fq1xxx Alexander Sverdlin <alexander.sverdlin(a)siemens.com> leds: lp8860: Write full EEPROM, not only half of it Viresh Kumar <viresh.kumar(a)linaro.org> cpufreq: s3c64xx: Fix compilation warning Ido Schimmel <idosch(a)nvidia.com> net: sched: Fix truncation of offloaded action statistics Willem de Bruijn <willemb(a)google.com> tun: revert fix group permission check Cong Wang <cong.wang(a)bytedance.com> netem: Update sch->q.qlen before qdisc_tree_reduce_backlog() Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> ACPI: property: Fix return value for nval == 0 in acpi_data_prop_read() Juergen Gross <jgross(a)suse.com> x86/xen: add FRAME_END to xen_hypercall_hvm() Juergen Gross <jgross(a)suse.com> x86/xen: fix xen_hypercall_hvm() to not clobber %rbx Eric Dumazet <edumazet(a)google.com> net: rose: lock the socket in rose_bind() Jacob Moroni <mail(a)jakemoroni.com> net: atlantic: fix warning during hot unplug Mark Tomlinson <mark.tomlinson(a)alliedtelesis.co.nz> gpio: pca953x: Improve interrupt support Yan Zhai <yan(a)cloudflare.com> udp: gso: do not drop small packets when PMTU reduces Lenny Szubowicz <lszubowi(a)redhat.com> tg3: Disable tg3 PCIe AER on system reboot Hans Verkuil <hverkuil(a)xs4all.nl> gpu: drm_dp_cec: fix broken CEC adapter properties check Prasad Pandit <pjp(a)fedoraproject.org> firmware: iscsi_ibft: fix ISCSI_IBFT Kconfig entry Daniel Wagner <wagi(a)kernel.org> nvme: handle connectivity loss in nvme_set_queue_count Darrick J. Wong <djwong(a)kernel.org> xfs: don't over-report free space or inodes in statvfs Darrick J. Wong <djwong(a)kernel.org> xfs: report realtime block quota limits on realtime directories Sean Anderson <sean.anderson(a)linux.dev> gpio: xilinx: Convert gpio_lock to raw spinlock Linus Walleij <linus.walleij(a)linaro.org> gpio: xilinx: Convert to immutable irq_chip Paul Fertser <fercerpav(a)gmail.com> net/ncsi: fix locking in Get MAC Address handling Peter Delevoryas <peter(a)pjd.dev> net/ncsi: Add NC-SI 1.2 Get MC MAC Address command Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> usb: chipidea: ci_hdrc_imx: decrement device's refcount in .remove() and in the error path of .probe() Uwe Kleine-König <u.kleine-koenig(a)pengutronix.de> usb: chipidea/ci_hdrc_imx: Convert to platform remove callback returning void Paolo Bonzini <pbonzini(a)redhat.com> KVM: e500: always restore irqs Sean Christopherson <seanjc(a)google.com> KVM: PPC: e500: Use __kvm_faultin_pfn() to handle page faults Sean Christopherson <seanjc(a)google.com> KVM: PPC: e500: Mark "struct page" pfn accessed before dropping mmu_lock Sean Christopherson <seanjc(a)google.com> KVM: PPC: e500: Mark "struct page" dirty in kvmppc_e500_shadow_map() Armin Wolf <W_Armin(a)gmx.de> platform/x86: acer-wmi: Ignore AC events Illia Ostapyshyn <illia(a)yshyn.com> Input: allocate keycode for phone linking Yu-Chun Lin <eleanor15x(a)gmail.com> ASoC: amd: Add ACPI dependency to fix build error Kuninori Morimoto <kuninori.morimoto.gx(a)renesas.com> ASoC: soc-pcm: don't use soc_pcm_ret() on .prepare callback Hans de Goede <hdegoede(a)redhat.com> platform/x86: int3472: Check for adev == NULL Robin Murphy <robin.murphy(a)arm.com> iommu/arm-smmu-v3: Clean up more on probe failure David Woodhouse <dwmw(a)amazon.co.uk> x86/kexec: Allocate PGD for x86_64 transition page tables separately Liu Ye <liuye(a)kylinos.cn> selftests/net/ipsec: Fix Null pointer dereference in rtattr_pack() Dan Carpenter <dan.carpenter(a)linaro.org> tipc: re-order conditions in tipc_crypto_key_rcv() Yuanjie Yang <quic_yuanjiey(a)quicinc.com> mmc: sdhci-msm: Correctly set the load for the regulator Maciej S. Szmigiero <mail(a)maciej.szmigiero.name> net: wwan: iosm: Fix hibernation by re-binding the driver around it Mazin Al Haddad <mazin(a)getstate.dev> Bluetooth: MGMT: Fix slab-use-after-free Read in mgmt_remove_adv_monitor_sync Borislav Petkov <bp(a)alien8.de> APEI: GHES: Have GHES honor the panic= setting Randolph Ha <rha051117(a)gmail.com> i2c: Force ELAN06FA touchpad I2C bus freq to 100KHz Miri Korenblit <miriam.rachel.korenblit(a)intel.com> wifi: iwlwifi: avoid memory leak Stefan Dösinger <stefan(a)codeweavers.com> wifi: brcmfmac: Check the return value of of_property_read_string_index() Vadim Fedorenko <vadfed(a)meta.com> net/mlx5: use do_aux_work for PHC overflow checks Even Xu <even.xu(a)intel.com> HID: Wacom: Add PCI Wacom device support Hans de Goede <hdegoede(a)redhat.com> mfd: lpc_ich: Add another Gemini Lake ISA bridge PCI device-id Tetsuo Handa <penguin-kernel(a)I-love.SAKURA.ne.jp> tomoyo: don't emit warning in tomoyo_write_control() Dmitry Antipov <dmantipov(a)yandex.ru> wifi: brcmsmac: add gain range check to wlc_phy_iqcal_gainparams_nphy() Shawn Lin <shawn.lin(a)rock-chips.com> mmc: core: Respect quirk_max_rate for non-UHS SDIO card Stas Sergeev <stsp2(a)yandex.ru> tun: fix group permission check Leo Stone <leocstone(a)gmail.com> safesetid: check size of policy writes Hermes Wu <hermes.wu(a)ite.com.tw> drm/bridge: it6505: fix HDCP CTS compare V matching Hermes Wu <hermes.wu(a)ite.com.tw> drm/bridge: it6505: fix HDCP encryption when R0 ready Hermes Wu <hermes.wu(a)ite.com.tw> drm/bridge: it6505: fix HDCP Bstatus check Hermes Wu <hermes.wu(a)ite.com.tw> drm/bridge: it6505: Change definition MAX_HDCP_DOWN_STREAM_COUNT Fangzhi Zuo <Jerry.Zuo(a)amd.com> drm/amd/display: Fix Mode Cutoff in DSC Passthrough to DP2.1 Monitor Kuan-Wei Chiu <visitorckw(a)gmail.com> printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX Dongwon Kim <dongwon.kim(a)intel.com> drm/virtio: New fence for every plane update Yazen Ghannam <yazen.ghannam(a)amd.com> x86/amd_nb: Restrict init function to AMD-based systems Carlos Llamas <cmllamas(a)google.com> lockdep: Fix upper limit for LOCKDEP_*_BITS configs Suleiman Souhlal <suleiman(a)google.com> sched: Don't try to catch up excess steal time. Josef Bacik <josef(a)toxicpanda.com> btrfs: convert BUG_ON in btrfs_reloc_cow_block() to proper error handling Hao-ran Zheng <zhenghaoran154(a)gmail.com> btrfs: fix data race when accessing the inode's disk_i_size at btrfs_drop_extents() Kees Cook <kees(a)kernel.org> exec: fix up /proc/pid/comm in the execveat(AT_EMPTY_PATH) case Anshuman Khandual <anshuman.khandual(a)arm.com> arm64/mm: Ensure adequate HUGE_MAX_HSTATE Filipe Manana <fdmanana(a)suse.com> btrfs: fix use-after-free when attempting to join an aborted transaction Antonio Borneo <antonio.borneo(a)foss.st.com> pinctrl: stm32: fix array read out of bound Nathan Chancellor <nathan(a)kernel.org> s390: Add '-std=gnu11' to decompressor and purgatory CFLAGS Thomas Weißschuh <linux(a)weissschuh.net> ptp: Properly handle compat ioctls Qu Wenruo <wqu(a)suse.com> btrfs: output the reason for open_ctree() failure Dan Carpenter <dan.carpenter(a)linaro.org> media: imx-jpeg: Fix potential error pointer dereference in detach_pm() Laurentiu Palcu <laurentiu.palcu(a)oss.nxp.com> staging: media: max96712: fix kernel oops when removing module Thinh Nguyen <Thinh.Nguyen(a)synopsys.com> usb: gadget: f_tcm: Don't free command immediately Laurent Pinchart <laurent.pinchart(a)ideasonboard.com> media: uvcvideo: Fix double free in error path Arnaud Pouliquen <arnaud.pouliquen(a)foss.st.com> remoteproc: core: Fix ida_free call while not allocated Paolo Abeni <pabeni(a)redhat.com> mptcp: handle fastopen disconnect correctly Paolo Abeni <pabeni(a)redhat.com> mptcp: consolidate suboption status Kyle Tso <kyletso(a)google.com> usb: typec: tcpci: Prevent Sink disconnection before vPpsShutdown in SPR PPS Jos Wang <joswang(a)lenovo.com> usb: typec: tcpm: set SRC_SEND_CAPABILITIES timeout to PD_T_SENDER_RESPONSE Kyle Tso <kyletso(a)google.com> usb: dwc3: core: Defer the probe until USB power supply ready Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> usb: dwc3-am62: Fix an OF node leak in phy_syscon_pll_refclk() Thinh Nguyen <Thinh.Nguyen(a)synopsys.com> usb: gadget: f_tcm: Fix Get/SetInterface return value Sean Rhodes <sean(a)starlabs.systems> drivers/card_reader/rtsx_usb: Restore interrupt based detection Michal Pecio <michal.pecio(a)gmail.com> usb: xhci: Fix NULL pointer dereference on certain command aborts Nikita Zhandarovich <n.zhandarovich(a)fintech.ru> net: usb: rtl8150: enable basic endpoint checking Lianqin Hu <hulianqin(a)vivo.com> ALSA: usb-audio: Add delay quirk for iBasso DC07 Pro Ricardo B. Marliere <rbm(a)suse.com> ktest.pl: Check kernelrelease return in get_version Tim Huang <tim.huang(a)amd.com> drm/amd/display: fix double free issue during amdgpu module unload Puranjay Mohan <pjy(a)amazon.com> nvme: fix metadata handling in nvme-passthrough Pablo Neira Ayuso <pablo(a)netfilter.org> netfilter: nf_tables: reject mismatching sum of field_len with set key length Parth Pancholi <parth.pancholi(a)toradex.com> kbuild: switch from lz4c to lz4 for compression Chuck Lever <chuck.lever(a)oracle.com> NFSD: Reset cb_seq_status after NFS4ERR_DELAY Daniel Lee <chullee(a)google.com> f2fs: Introduce linear search for dentries Lin Yujun <linyujun809(a)huawei.com> hexagon: Fix unbalanced spinlock in die() Willem de Bruijn <willemb(a)google.com> hexagon: fix using plain integer as NULL pointer warning in cmpxchg Masahiro Yamada <masahiroy(a)kernel.org> kconfig: fix memory leak in sym_warn_unmet_dep() Sergey Senozhatsky <senozhatsky(a)chromium.org> kconfig: WERROR unmet symbol dependency Masahiro Yamada <masahiroy(a)kernel.org> kconfig: deduplicate code in conf_read_simple() Masahiro Yamada <masahiroy(a)kernel.org> kconfig: remove unused code for S_DEF_AUTO in conf_read_simple() Masahiro Yamada <masahiroy(a)kernel.org> kconfig: require a space after '#' for valid input Sergey Senozhatsky <senozhatsky(a)chromium.org> kconfig: add warn-unknown-symbols sanity check Masahiro Yamada <masahiroy(a)kernel.org> kconfig: fix file name in warnings when loading KCONFIG_DEFCONFIG_LIST Detlev Casanova <detlev.casanova(a)collabora.com> ASoC: rockchip: i2s_tdm: Re-add the set_sysclk callback Masahiro Yamada <masahiroy(a)kernel.org> genksyms: fix memory leak when the same symbol is read from *.symref file Masahiro Yamada <masahiroy(a)kernel.org> genksyms: fix memory leak when the same symbol is added from source Eric Dumazet <edumazet(a)google.com> net: hsr: fix fill_frame_info() regression vs VLAN packets Kory Maincent <kory.maincent(a)bootlin.com> net: sh_eth: Fix missing rtnl lock in suspend/resume path Rafał Miłecki <rafal(a)milecki.pl> bgmac: reduce max frame size to support just MTU 1500 Chenyuan Yang <chenyuan0y(a)gmail.com> net: davicom: fix UAF in dm9000_drv_remove Shigeru Yoshida <syoshida(a)redhat.com> vxlan: Fix uninit-value in vxlan_vnifilter_dump() Jakub Kicinski <kuba(a)kernel.org> net: netdevsim: try to close UDP port harness races Eric Dumazet <edumazet(a)google.com> net: rose: fix timer races against user threads Michal Swiatkowski <michal.swiatkowski(a)linux.intel.com> iavf: allow changing VLAN state without calling PF Wentao Liang <vulab(a)iscas.ac.cn> PM: hibernate: Add error handling for syscore_suspend() Eric Dumazet <edumazet(a)google.com> ipmr: do not call mr_mfc_uses_dev() for unres entries Dheeraj Reddy Jonnalagadda <dheeraj.linuxdev(a)gmail.com> net: fec: implement TSO descriptor cleanup Ahmad Fatoum <a.fatoum(a)pengutronix.de> gpio: mxc: remove dead code after switch to DT-only Jian Shen <shenjian15(a)huawei.com> net: hns3: fix oops when unload drivers paralleling Alexander Stein <alexander.stein(a)ew.tq-group.com> regulator: core: Add missing newline character pangliyuan <pangliyuan1(a)huawei.com> ubifs: skip dumping tnc tree when zroot is null Oleksij Rempel <linux(a)rempel-privat.de> rtc: pcf85063: fix potential OOB write in PCF85063 NVMEM read Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> dmaengine: ti: edma: fix OF node reference leaks in edma_driver Jianbo Liu <jianbol(a)nvidia.com> xfrm: replay: Fix the update of replay_esn->oseq_hi for GSO Luo Yifan <luoyifan(a)cmss.chinamobile.com> tools/bootconfig: Fix the wrong format specifier Olga Kornievskaia <okorniev(a)redhat.com> NFSv4.2: mark OFFLOAD_CANCEL MOVEABLE Olga Kornievskaia <okorniev(a)redhat.com> NFSv4.2: fix COPY_NOTIFY xdr buf size calculation John Ogness <john.ogness(a)linutronix.de> serial: 8250: Adjust the timeout for FIFO mode Sebastian Andrzej Siewior <bigeasy(a)linutronix.de> module: Extend the preempt disabled section in dereference_symbol_descriptor(). Su Yue <glass.su(a)suse.com> ocfs2: mark dquot as inactive if failed to start trans while releasing dquot Guixin Liu <kanie(a)linux.alibaba.com> scsi: ufs: bsg: Delete bsg_dev when setting up bsg fails Paul Menzel <pmenzel(a)molgen.mpg.de> scsi: mpt3sas: Set ioc->manu_pg11.EEDPTagMode directly to 1 Manivannan Sadhasivam <mani(a)kernel.org> PCI: endpoint: pci-epf-test: Fix check for DMA MEMCPY test Damien Le Moal <dlemoal(a)kernel.org> PCI: epf-test: Simplify DMA support checks Mohamed Khalfella <khalfella(a)gmail.com> PCI: endpoint: pci-epf-test: Set dma_chan_rx pointer to NULL on error King Dix <kingdix10(a)qq.com> PCI: rcar-ep: Fix incorrect variable used when calling devm_request_mem_region() Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> staging: media: imx: fix OF node leak in imx_media_add_of_subdevs() Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> mtd: hyperbus: hbmc-am654: fix an OF node reference leak Uwe Kleine-König <u.kleine-koenig(a)pengutronix.de> mtd: hyperbus: hbmc-am654: Convert to platform remove callback returning void Ricardo Ribalda <ribalda(a)chromium.org> media: uvcvideo: Propagate buf->error to userspace Jiasheng Jiang <jiashengjiangcool(a)gmail.com> media: camif-core: Add check for clk_enable() Jiasheng Jiang <jiashengjiangcool(a)gmail.com> media: mipi-csis: Add check for clk_enable() Dave Stevenson <dave.stevenson(a)raspberrypi.com> media: i2c: ov9282: Correct the exposure offset Luca Weiss <luca.weiss(a)fairphone.com> media: i2c: imx412: Add missing newline to prints Jiasheng Jiang <jiashengjiangcool(a)gmail.com> media: marvell: Add check for clk_enable() Zijun Hu <quic_zijuhu(a)quicinc.com> PCI: endpoint: Destroy the EPC device in devm_pci_epc_destroy() Chen Ni <nichen(a)iscas.ac.cn> media: lmedm04: Handle errors for lme2510_int_read Oliver Neukum <oneukum(a)suse.com> media: rc: iguanair: handle timeouts Qasim Ijaz <qasdev00(a)gmail.com> iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index() Zhu Yanjun <yanjun.zhu(a)linux.dev> RDMA/rxe: Fix the warning "__rxe_cleanup+0x12c/0x170 [rdma_rxe]" Randy Dunlap <rdunlap(a)infradead.org> efi: sysfb_efi: fix W=1 warnings when EFI is not set Zijun Hu <quic_zijuhu(a)quicinc.com> of: reserved-memory: Do not make kmemleak ignore freed address Michael Guralnik <michaelgur(a)nvidia.com> RDMA/mlx5: Fix indirect mkey ODP page count Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> fbdev: omapfb: Fix an OF node leak in dss_of_port_get_parent_device() Rafał Miłecki <rafal(a)milecki.pl> ARM: dts: mediatek: mt7623: fix IR nodename Vladimir Zapolskiy <vladimir.zapolskiy(a)linaro.org> arm64: dts: qcom: sm8250: Fix interrupt types of camss interrupts Vladimir Zapolskiy <vladimir.zapolskiy(a)linaro.org> arm64: dts: qcom: sdm845: Fix interrupt types of camss interrupts Jason-JH.Lin <jason-jh.lin(a)mediatek.com> dts: arm64: mediatek: mt8195: Remove MT8183 compatible for OVL Konrad Dybcio <konrad.dybcio(a)oss.qualcomm.com> arm64: dts: qcom: sc8280xp: Fix up remoteproc register space sizes Neil Armstrong <neil.armstrong(a)linaro.org> arm64: dts: qcom: sm8150-microsoft-surface-duo: fix typos in da7280 properties Neil Armstrong <neil.armstrong(a)linaro.org> arm64: dts: qcom: sc7180-trogdor-pompom: rename 5v-choke thermal zone Konrad Dybcio <konrad.dybcio(a)linaro.org> arm64: dts: qcom: sc7180-*: Remove thermal zone polling delays Luca Weiss <luca.weiss(a)fairphone.com> arm64: dts: qcom: pm6150l: add temp sensor and thermal zone config Neil Armstrong <neil.armstrong(a)linaro.org> arm64: dts: qcom: sc7180-trogdor-quackingstick: add missing avee-supply Nikita Travkin <nikita(a)trvn.ru> arm64: dts: qcom: sc7180: Drop redundant disable in mdp Nikita Travkin <nikita(a)trvn.ru> arm64: dts: qcom: sc7180: Don't enable lpass clocks by default Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> arm64: dts: qcom: sc7180-trogdor-wormdingler: use just "port" in panel Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> arm64: dts: qcom: sc7180-trogdor-quackingstick: use just "port" in panel Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> arm64: dts: qcom: sc7180-idp: use just "port" in panel Bryan O'Donoghue <bryan.odonoghue(a)linaro.org> arm64: dts: qcom: sc7180: Add compat qcom,sc7180-dsi-ctrl Bryan Brattlof <bb(a)ti.com> arm64: dts: ti: k3-am62a: Remove duplicate GICR reg Bryan Brattlof <bb(a)ti.com> arm64: dts: ti: k3-am62: Remove duplicate GICR reg Dmitry Baryshkov <dmitry.baryshkov(a)linaro.org> arm64: dts: qcom: sm8450: correct sleep clock frequency Dmitry Baryshkov <dmitry.baryshkov(a)linaro.org> arm64: dts: qcom: sm8350: correct sleep clock frequency Dmitry Baryshkov <dmitry.baryshkov(a)linaro.org> arm64: dts: qcom: sm8250: correct sleep clock frequency Dmitry Baryshkov <dmitry.baryshkov(a)linaro.org> arm64: dts: qcom: sm6125: correct sleep clock frequency Dmitry Baryshkov <dmitry.baryshkov(a)linaro.org> arm64: dts: qcom: sc7280: correct sleep clock frequency Dmitry Baryshkov <dmitry.baryshkov(a)linaro.org> arm64: dts: qcom: msm8994: correct sleep clock frequency Dmitry Baryshkov <dmitry.baryshkov(a)linaro.org> arm64: dts: qcom: msm8916: correct sleep clock frequency Luca Weiss <luca.weiss(a)fairphone.com> arm64: dts: qcom: sm7225-fairphone-fp4: Drop extra qcom,msm-id value Konrad Dybcio <konrad.dybcio(a)oss.qualcomm.com> arm64: dts: qcom: msm8994: Describe USB interrupts Konrad Dybcio <konrad.dybcio(a)oss.qualcomm.com> arm64: dts: qcom: msm8996: Fix up USB3 interrupts Marek Vasut <marex(a)denx.de> arm64: dts: qcom: msm8996-xiaomi-gemini: Fix LP5562 LED1 reg property Chen-Yu Tsai <wenst(a)chromium.org> arm64: dts: mediatek: mt8183-kukui-jacuzzi: Drop pp3300_panel voltage settings Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> memory: tegra20-emc: fix an OF node reference bug in tegra_emc_find_node_by_ram_code() Ma Ke <make_ruc2021(a)163.com> RDMA/srp: Fix error handling in srp_add_port Hsin-Te Yuan <yuanhsinte(a)chromium.org> arm64: dts: mediatek: mt8183: willow: Support second source touchscreen Hsin-Te Yuan <yuanhsinte(a)chromium.org> arm64: dts: mediatek: mt8183: kenzo: Support second source touchscreen Chen-Yu Tsai <wenst(a)chromium.org> arm64: dts: mediatek: mt8173-evb: Fix MT6397 PMIC sub-node names Chen-Yu Tsai <wenst(a)chromium.org> arm64: dts: mediatek: mt8173-elm: Fix MT6397 PMIC sub-node names Chen-Yu Tsai <wenst(a)chromium.org> arm64: dts: mediatek: mt8195-demo: Drop regulator-compatible property Chen-Yu Tsai <wenst(a)chromium.org> arm64: dts: mediatek: mt8195-cherry: Drop regulator-compatible property Chen-Yu Tsai <wenst(a)chromium.org> arm64: dts: mediatek: mt8192-asurada: Drop regulator-compatible property Chen-Yu Tsai <wenst(a)chromium.org> arm64: dts: mediatek: mt8173-elm: Drop regulator-compatible property Chen-Yu Tsai <wenst(a)chromium.org> arm64: dts: mediatek: mt8173-evb: Drop regulator-compatible property Dan Carpenter <dan.carpenter(a)linaro.org> rdma/cxgb4: Prevent potential integer overflow on 32bit Leon Romanovsky <leon(a)kernel.org> RDMA/mlx4: Avoid false error about access to uninitialized gids array Val Packett <val(a)packett.cool> arm64: dts: mediatek: mt8516: reserve 192 KiB for TF-A Val Packett <val(a)packett.cool> arm64: dts: mediatek: mt8516: add i2c clock-div property Val Packett <val(a)packett.cool> arm64: dts: mediatek: mt8516: fix wdt irq type Val Packett <val(a)packett.cool> arm64: dts: mediatek: mt8516: fix GICv2 range Hsin-Yi Wang <hsinyi(a)chromium.org> arm64: dts: mt8183: set DMIC one-wire mode on Damu Nicolas Ferre <nicolas.ferre(a)microchip.com> ARM: at91: pm: change BU Power Switch to automatic mode Javier Carrasco <javier.carrasco.cruz(a)gmail.com> soc: atmel: fix device_node release in atmel_soc_device_init() Paulo Alcantara <pc(a)manguebit.com> smb: client: fix oops due to unset link speed Chen Ridong <chenridong(a)huawei.com> padata: avoid UAF for reorder_work Chen Ridong <chenridong(a)huawei.com> padata: add pd get/put refcnt helper Chen Ridong <chenridong(a)huawei.com> padata: fix UAF in padata_reorder Kailang Yang <kailang(a)realtek.com> ALSA: hda/realtek - Fixed headphone distorted sound on Acer Aspire A115-31 laptop Daniel Xu <dxu(a)dxuuu.xyz> bpf: tcp: Mark bpf_load_hdr_opt() arg2 as read-write Puranjay Mohan <puranjay(a)kernel.org> bpf: Send signals asynchronously if !preemptible Mingwei Zheng <zmw12306(a)gmail.com> pinctrl: stm32: Add check for clk_enable() Ma Ke <make24(a)iscas.ac.cn> pinctrl: stm32: check devm_kasprintf() returned value Chen Ni <nichen(a)iscas.ac.cn> pinctrl: stm32: Add check for devm_kcalloc Valentin Caron <valentin.caron(a)foss.st.com> pinctrl: stm32: set default gpio line names using pin names Cezary Rojewski <cezary.rojewski(a)intel.com> ASoC: Intel: avs: Fix theoretical infinite loop Thomas Weißschuh <linux(a)weissschuh.net> padata: fix sysfs store callback check Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> crypto: ixp4xx - fix OF node reference leaks in init_ixp_crypto() Wenkai Lin <linwenkai6(a)hisilicon.com> crypto: hisilicon/sec2 - fix for aead invalid authsize Wenkai Lin <linwenkai6(a)hisilicon.com> crypto: hisilicon/sec2 - fix for aead icv error Chenghai Huang <huangchenghai2(a)huawei.com> crypto: hisilicon/sec2 - optimize the error return process Ba Jing <bajing(a)cmss.chinamobile.com> ktest.pl: Remove unused declarations in run_bisect_test function Claudiu Beznea <claudiu.beznea.uj(a)bp.renesas.com> ASoC: renesas: rz-ssi: Use only the proper amount of dividers George Lander <lander(a)jagmn.com> ASoC: sun4i-spdif: Add clock multiplier settings Quentin Monnet <qmo(a)kernel.org> libbpf: Fix segfault due to libelf functions not setting errno Marco Leogrande <leogrande(a)google.com> tools/testing/selftests/bpf/test_tc_tunnel.sh: Fix wait for server bind Andrii Nakryiko <andrii(a)kernel.org> libbpf: don't adjust USDT semaphore address if .stapsdt.base addr is missing Nikita Zhandarovich <n.zhandarovich(a)fintech.ru> net/rose: prevent integer overflows in rose_setsockopt() Mahdi Arghavani <ma.arghavani(a)yahoo.com> tcp_cubic: fix incorrect HyStart round start detection Roger Quadros <rogerq(a)kernel.org> net: ethernet: ti: am65-cpsw: fix freeing IRQ in am65_cpsw_nuss_remove_tx_chns() Florian Westphal <fw(a)strlen.de> netfilter: nft_flow_offload: update tcp state flags under lock Jamal Hadi Salim <jhs(a)mojatatu.com> net: sched: Disallow replacing of child qdisc from one parent to another Antoine Tenart <atenart(a)kernel.org> net: avoid race between device unregistration and ethnl ops Maher Sanalla <msanalla(a)nvidia.com> net/mlxfw: Drop hard coded max FW flash image size Liu Jian <liujian56(a)huawei.com> net: let net.core.dev_weight always be non-zero Mickaël Salaün <mic(a)digikod.net> selftests/landlock: Fix error message Mingwei Zheng <zmw12306(a)gmail.com> pwm: stm32: Add check for clk_enable() Bo Gan <ganboing(a)gmail.com> clk: analogbits: Fix incorrect calculation of vco rate delta Dmitry Antipov <dmantipov(a)yandex.ru> wifi: cfg80211: adjust allocation of colocated AP data Ilan Peer <ilan.peer(a)intel.com> wifi: cfg80211: Handle specific BSSID in 6GHz scanning Dmitry V. Levin <ldv(a)strace.io> selftests: harness: fix printing of mismatch values in __EXPECT() Geert Uytterhoeven <geert+renesas(a)glider.be> selftests: timers: clocksource-switch: Adapt progress to kselftest framework Gautham R. Shenoy <gautham.shenoy(a)amd.com> cpufreq: ACPI: Fix max-frequency computation Peter Chiu <chui-hao.chiu(a)mediatek.com> wifi: mt76: mt7915: fix register mapping Michael Lo <michael.lo(a)mediatek.com> wifi: mt76: mt7921: fix using incorrect group cipher after disconnection. WangYuli <wangyuli(a)uniontech.com> wifi: mt76: mt76u_vendor_request: Do not print error messages when -EPROTO Mickaël Salaün <mic(a)digikod.net> landlock: Handle weird files Guangguan Wang <guangguan.wang(a)linux.alibaba.com> net/smc: fix data error when recvmsg with MSG_PEEK flag Ilan Peer <ilan.peer(a)intel.com> wifi: mac80211: Fix common size calculation for ML element Johannes Berg <johannes.berg(a)intel.com> wifi: mac80211: prohibit deactivating all links Andreas Kemnade <andreas(a)kemnade.info> wifi: wlcore: fix unbalanced pm_runtime calls Zichen Xie <zichenxie0106(a)gmail.com> samples/landlock: Fix possible NULL dereference in parse_path() Rob Herring (Arm) <robh(a)kernel.org> mfd: syscon: Fix race in device_node_get_regmap() Krzysztof Kozlowski <krzysztof.kozlowski(a)linaro.org> mfd: syscon: Use scoped variables with memory allocators to simplify error paths Peter Griffin <peter.griffin(a)linaro.org> mfd: syscon: Add of_syscon_register_regmap() API Peter Griffin <peter.griffin(a)linaro.org> mfd: syscon: Remove extern from function prototypes Karol Przybylski <karprzy7(a)gmail.com> HID: hid-thrustmaster: Fix warning in thrustmaster_probe by adding endpoint check Amit Pundir <amit.pundir(a)linaro.org> clk: qcom: gcc-sdm845: Do not use shared clk_ops for QUPs Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> OPP: OF: Fix an OF node leak in _opp_add_static_v2() Eric Dumazet <edumazet(a)google.com> ax25: rcu protect dev->ax25_ptr Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> regulator: of: Implement the unwind path of of_regulator_match() Octavian Purdila <tavip(a)google.com> team: prevent adding a device which is already a team device lower Marek Vasut <marex(a)denx.de> clk: imx8mp: Fix clkout1/2 support Sultan Alsawaf (unemployed) <sultan(a)kerneltoast.com> cpufreq: schedutil: Fix superfluous updates caused by need_freq_update Mingwei Zheng <zmw12306(a)gmail.com> pwm: stm32-lp: Add check for clk_enable() Eric Dumazet <edumazet(a)google.com> inetpeer: do not get a refcount in inet_getpeer() Eric Dumazet <edumazet(a)google.com> inetpeer: update inetpeer timestamp in inet_getpeer() Eric Dumazet <edumazet(a)google.com> inetpeer: remove create argument of inet_getpeer() Eric Dumazet <edumazet(a)google.com> inetpeer: remove create argument of inet_getpeer_v[46]() Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> leds: netxbig: Fix an OF node reference leak in netxbig_leds_get_of_pdata() Matti Vaittinen <mazziesaccount(a)gmail.com> dt-bindings: mfd: bd71815: Fix rsense and typos He Rongguang <herongguang(a)linux.alibaba.com> cpupower: fix TSC MHz calculation Joe Hattori <joe(a)pf.is.s.u-tokyo.ac.jp> ACPI: fan: cleanup resources in the error path of .probe() Chen-Yu Tsai <wenst(a)chromium.org> regulator: dt-bindings: mt6315: Drop regulator-compatible property Jiri Kosina <jkosina(a)suse.com> HID: multitouch: fix support for Goodix PID 0x01e9 Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> wifi: rtlwifi: pci: wait for firmware loading before releasing memory Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> wifi: rtlwifi: fix memory leaks and invalid access at probe error path Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> wifi: rtlwifi: destroy workqueue at rtl_deinit_core Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> wifi: rtlwifi: remove unused check_buddy_priv Dmitry Antipov <dmantipov(a)yandex.ru> wifi: rtlwifi: remove unused dualmac control leftovers Dmitry Antipov <dmantipov(a)yandex.ru> wifi: rtlwifi: remove unused timer and related code Geert Uytterhoeven <geert+renesas(a)glider.be> dt-bindings: leds: class-multicolor: Fix path to color definitions Neil Armstrong <neil.armstrong(a)linaro.org> dt-bindings: mmc: controller: clarify the address-cells description Mingwei Zheng <zmw12306(a)gmail.com> spi: zynq-qspi: Add check for clk_enable() Octavian Purdila <tavip(a)google.com> net_sched: sch_sfq: don't allow 1 packet limit Eric Dumazet <edumazet(a)google.com> net_sched: sch_sfq: handle bigger packets Eric Dumazet <edumazet(a)google.com> net_sched: sch_sfq: annotate data-races around q->perturb_period Barnabás Czémán <barnabas.czeman(a)mainlining.org> wifi: wcn36xx: fix channel survey memory allocation size Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> wifi: rtlwifi: usb: fix workqueue leak when probe fails Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> wifi: rtlwifi: fix init_sw_vars leak when probe fails Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> wifi: rtlwifi: wait for firmware loading before releasing memory Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> wifi: rtlwifi: rtl8192se: rise completion of firmware loading as last step Thadeu Lima de Souza Cascardo <cascardo(a)igalia.com> wifi: rtlwifi: do not complete firmware loading needlessly Balaji Pothunoori <quic_bpothuno(a)quicinc.com> wifi: ath11k: Fix unexpected return buffer manager error for WCN6750/WCN6855 Charles Han <hanchunchao(a)inspur.com> ipmi: ipmb: Add check devm_kasprintf() returned value Thomas Gleixner <tglx(a)linutronix.de> genirq: Make handle_enforce_irqctx() unconditionally available Hermes Wu <hermes.wu(a)ite.com.tw> drm/bridge: it6505: Change definition of AUX_FIFO_MAX_SIZE Neil Armstrong <neil.armstrong(a)linaro.org> OPP: fix dev_pm_opp_find_bw_*() when bandwidth table not initialized Neil Armstrong <neil.armstrong(a)linaro.org> OPP: add index check to assert to avoid buffer overflow in _read_freq() Viresh Kumar <viresh.kumar(a)linaro.org> OPP: Reuse dev_pm_opp_get_freq_indexed() Viresh Kumar <viresh.kumar(a)linaro.org> OPP: Add dev_pm_opp_find_freq_exact_indexed() Manivannan Sadhasivam <mani(a)kernel.org> OPP: Introduce dev_pm_opp_get_freq_indexed() API Manivannan Sadhasivam <mani(a)kernel.org> OPP: Introduce dev_pm_opp_find_freq_{ceil/floor}_indexed() APIs Viresh Kumar <viresh.kumar(a)linaro.org> OPP: Rearrange entries in pm_opp.h Andy Yan <andy.yan(a)rock-chips.com> drm/rockchip: vop2: Check linear format for Cluster windows on rk3566/8 Andy Yan <andy.yan(a)rock-chips.com> drm/rockchip: vop2: Fix the windows switch between different layers Andy Yan <andy.yan(a)rock-chips.com> drm/rockchip: vop2: set bg dly and prescan dly at vop2_post_config Andy Yan <andy.yan(a)rock-chips.com> drm/rockchip: vop2: Set YUV/RGB overlay mode Andy Yan <andy.yan(a)rock-chips.com> drm/rockchip: vop2: Fix the mixer alpha setup for layer 0 Andy Yan <andy.yan(a)rock-chips.com> drm/rockchip: vop2: Fix cluster windows alpha ctrl regsiters offset Ivan Stepchenko <sid(a)itb.spb.ru> drm/amdgpu: Fix potential NULL pointer dereference in atomctrl_get_smc_sclk_range_table Alan Stern <stern(a)rowland.harvard.edu> HID: core: Fix assumption that Resolution Multipliers must be in Logical Collections Sui Jingfeng <sui.jingfeng(a)linux.dev> drm/etnaviv: Fix page property being used for non writecombine buffers Dmitry Baryshkov <dmitry.baryshkov(a)linaro.org> drm/msm/dp: set safe_to_exit_level before printing it Peter Zijlstra <peterz(a)infradead.org> sched/fair: Fix value reported by hot tasks pulled in /proc/schedstat Chengming Zhou <zhouchengming(a)bytedance.com> sched/psi: Use task->psi_flags to clear in CPU migration David Howells <dhowells(a)redhat.com> afs: Fix the fallback handling for the YFS.RemoveFile2 RPC call Christophe Leroy <christophe.leroy(a)csgroup.eu> select: Fix unbalanced user_access_end() Randy Dunlap <rdunlap(a)infradead.org> partitions: ldm: remove the initial kernel-doc notation Michael Ellerman <mpe(a)ellerman.id.au> selftests/powerpc: Fix argument order to timer_sub() Keisuke Nishimura <keisuke.nishimura(a)inria.fr> nvme: Add error check for xa_store in nvme_get_effects_log Eugen Hristev <eugen.hristev(a)linaro.org> pstore/blk: trivial typo fixes Yu Kuai <yukuai3(a)huawei.com> nbd: don't allow reconnect after disconnect Yang Erkun <yangerkun(a)huawei.com> block: retry call probe after request_module in blk_request_module Jinliang Zheng <alexjlzheng(a)gmail.com> fs: fix proc_handler for sysctl_nr_open David Howells <dhowells(a)redhat.com> afs: Fix directory format encoding struct David Howells <dhowells(a)redhat.com> afs: Fix EEXIST error returned from afs_rmdir() to be ENOTEMPTY Sourabh Jain <sourabhjain(a)linux.ibm.com> powerpc/book3s64/hugetlb: Fix disabling hugetlb when fadump is active ------------- Diffstat: .../bindings/leds/leds-class-multicolor.yaml | 2 +- .../devicetree/bindings/mfd/rohm,bd71815-pmic.yaml | 20 +-- .../devicetree/bindings/mmc/mmc-controller.yaml | 2 +- .../bindings/regulator/mt6315-regulator.yaml | 6 - Documentation/kbuild/kconfig.rst | 9 ++ Makefile | 6 +- arch/alpha/include/uapi/asm/ptrace.h | 2 + arch/alpha/kernel/asm-offsets.c | 2 + arch/alpha/kernel/entry.S | 24 ++- arch/alpha/kernel/traps.c | 2 +- arch/alpha/mm/fault.c | 4 +- arch/arm/boot/dts/dra7-l4.dtsi | 2 + arch/arm/boot/dts/mt7623.dtsi | 2 +- arch/arm/mach-at91/pm.c | 31 ++-- arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi | 29 +--- arch/arm64/boot/dts/mediatek/mt8173-evb.dts | 25 +--- .../dts/mediatek/mt8183-kukui-jacuzzi-damu.dts | 4 + .../dts/mediatek/mt8183-kukui-jacuzzi-kenzo.dts | 15 ++ .../dts/mediatek/mt8183-kukui-jacuzzi-willow.dtsi | 15 ++ .../boot/dts/mediatek/mt8183-kukui-jacuzzi.dtsi | 2 - arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 3 - arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi | 2 - arch/arm64/boot/dts/mediatek/mt8195-demo.dts | 9 -- arch/arm64/boot/dts/mediatek/mt8195.dtsi | 2 +- arch/arm64/boot/dts/mediatek/mt8516.dtsi | 11 +- arch/arm64/boot/dts/mediatek/pumpkin-common.dtsi | 2 - arch/arm64/boot/dts/nvidia/tegra234.dtsi | 6 +- arch/arm64/boot/dts/qcom/msm8916.dtsi | 2 +- arch/arm64/boot/dts/qcom/msm8994.dtsi | 11 +- arch/arm64/boot/dts/qcom/msm8996-xiaomi-gemini.dts | 2 +- arch/arm64/boot/dts/qcom/msm8996.dtsi | 9 +- arch/arm64/boot/dts/qcom/pm6150.dtsi | 2 +- arch/arm64/boot/dts/qcom/pm6150l.dtsi | 35 +++++ arch/arm64/boot/dts/qcom/sc7180-idp.dts | 15 +- .../arm64/boot/dts/qcom/sc7180-trogdor-coachz.dtsi | 1 - .../boot/dts/qcom/sc7180-trogdor-homestar.dtsi | 1 - .../arm64/boot/dts/qcom/sc7180-trogdor-pompom.dtsi | 7 +- .../dts/qcom/sc7180-trogdor-quackingstick.dtsi | 12 +- .../boot/dts/qcom/sc7180-trogdor-wormdingler.dtsi | 12 +- arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 9 +- arch/arm64/boot/dts/qcom/sc7180.dtsi | 34 +---- arch/arm64/boot/dts/qcom/sc7280.dtsi | 2 +- arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 6 +- arch/arm64/boot/dts/qcom/sdm845.dtsi | 20 +-- arch/arm64/boot/dts/qcom/sm6125.dtsi | 2 +- arch/arm64/boot/dts/qcom/sm6350.dtsi | 4 +- arch/arm64/boot/dts/qcom/sm7225-fairphone-fp4.dts | 2 +- .../boot/dts/qcom/sm8150-microsoft-surface-duo.dts | 4 +- arch/arm64/boot/dts/qcom/sm8250.dtsi | 30 ++-- arch/arm64/boot/dts/qcom/sm8350.dtsi | 4 +- arch/arm64/boot/dts/qcom/sm8450.dtsi | 4 +- arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi | 2 +- arch/arm64/boot/dts/ti/k3-am62-main.dtsi | 1 - arch/arm64/boot/dts/ti/k3-am62a-main.dtsi | 1 - arch/arm64/kernel/cacheinfo.c | 12 +- arch/arm64/kernel/vdso/vdso.lds.S | 1 + arch/arm64/kernel/vmlinux.lds.S | 1 + arch/arm64/mm/hugetlbpage.c | 12 ++ arch/hexagon/include/asm/cmpxchg.h | 2 +- arch/hexagon/kernel/traps.c | 4 +- arch/m68k/include/asm/vga.h | 8 +- arch/mips/kernel/ftrace.c | 2 +- arch/mips/loongson64/boardinfo.c | 2 - arch/mips/math-emu/cp1emu.c | 2 +- arch/powerpc/include/asm/hugetlb.h | 9 ++ arch/powerpc/kvm/e500_mmu_host.c | 21 +-- arch/powerpc/platforms/pseries/eeh_pseries.c | 6 +- arch/s390/Makefile | 2 +- arch/s390/include/asm/futex.h | 2 +- arch/s390/kvm/vsie.c | 25 +++- arch/s390/purgatory/Makefile | 2 +- arch/x86/boot/compressed/Makefile | 1 + arch/x86/events/intel/core.c | 5 +- arch/x86/include/asm/kexec.h | 18 ++- arch/x86/include/asm/mmu.h | 2 + arch/x86/include/asm/mmu_context.h | 1 + arch/x86/include/asm/msr-index.h | 3 +- arch/x86/include/asm/tlbflush.h | 1 + arch/x86/kernel/amd_nb.c | 4 + arch/x86/kernel/i8253.c | 11 +- arch/x86/kernel/machine_kexec_64.c | 45 +++--- arch/x86/kernel/static_call.c | 1 - arch/x86/kvm/hyperv.c | 6 +- arch/x86/kvm/mmu/mmu.c | 2 +- arch/x86/kvm/svm/nested.c | 10 +- arch/x86/mm/tlb.c | 35 ++++- arch/x86/xen/mmu_pv.c | 79 ++++++++-- arch/x86/xen/xen-head.S | 5 +- block/blk-cgroup.c | 1 + block/fops.c | 5 +- block/genhd.c | 22 ++- block/partitions/ldm.h | 2 +- block/partitions/mac.c | 18 ++- drivers/acpi/apei/ghes.c | 10 +- drivers/acpi/fan_core.c | 10 +- drivers/acpi/prmt.c | 4 +- drivers/acpi/property.c | 10 +- drivers/ata/libata-sff.c | 18 ++- drivers/base/regmap/regmap-irq.c | 2 + drivers/block/nbd.c | 1 + drivers/char/ipmi/ipmb_dev_int.c | 3 + drivers/clk/analogbits/wrpll-cln28hpc.c | 2 +- drivers/clk/imx/clk-imx8mp.c | 5 +- drivers/clk/qcom/clk-alpha-pll.c | 2 + drivers/clk/qcom/clk-rpmh.c | 2 +- drivers/clk/qcom/dispcc-sm6350.c | 7 +- drivers/clk/qcom/gcc-mdm9607.c | 2 +- drivers/clk/qcom/gcc-sdm845.c | 32 ++-- drivers/clk/qcom/gcc-sm6350.c | 22 ++- drivers/clk/sunxi-ng/ccu-sun50i-a100.c | 6 +- drivers/clocksource/i8253.c | 13 +- drivers/cpufreq/acpi-cpufreq.c | 36 +++-- drivers/cpufreq/s3c64xx-cpufreq.c | 11 +- drivers/crypto/hisilicon/sec2/sec.h | 3 +- drivers/crypto/hisilicon/sec2/sec_crypto.c | 164 ++++++++++----------- drivers/crypto/hisilicon/sec2/sec_crypto.h | 11 -- drivers/crypto/ixp4xx_crypto.c | 3 + drivers/crypto/qce/aead.c | 2 +- drivers/crypto/qce/core.c | 13 +- drivers/crypto/qce/sha.c | 2 +- drivers/crypto/qce/skcipher.c | 2 +- drivers/dma/ti/edma.c | 3 +- drivers/firmware/Kconfig | 2 +- drivers/firmware/efi/efi.c | 6 +- drivers/firmware/efi/libstub/Makefile | 2 +- drivers/firmware/efi/libstub/randomalloc.c | 3 + drivers/firmware/efi/libstub/relocate.c | 3 + drivers/firmware/efi/sysfb_efi.c | 2 +- drivers/gpio/gpio-bcm-kona.c | 71 +++++++-- drivers/gpio/gpio-mxc.c | 3 +- drivers/gpio/gpio-pca953x.c | 19 --- drivers/gpio/gpio-stmpe.c | 15 +- drivers/gpio/gpio-xilinx.c | 56 +++---- drivers/gpio/gpiolib-acpi.c | 14 ++ .../amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 6 +- .../amd/display/dc/clk_mgr/dcn30/dcn30_clk_mgr.c | 8 + .../amd/display/dc/clk_mgr/dcn32/dcn32_clk_mgr.c | 8 + drivers/gpu/drm/amd/display/dc/core/dc_link.c | 2 +- .../gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c | 3 +- .../gpu/drm/amd/display/dc/dcn30/dcn30_resource.c | 3 + .../gpu/drm/amd/display/dc/dcn31/dcn31_resource.c | 5 + .../drm/amd/display/dc/dcn314/dcn314_resource.c | 5 + .../drm/amd/display/dc/dcn315/dcn315_resource.c | 2 + .../drm/amd/display/dc/dcn316/dcn316_resource.c | 2 + .../gpu/drm/amd/display/dc/dcn32/dcn32_resource.c | 5 + .../drm/amd/display/dc/dcn321/dcn321_resource.c | 2 + .../gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c | 2 + drivers/gpu/drm/amd/pm/swsmu/amdgpu_smu.c | 3 +- drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c | 1 - .../drm/arm/display/komeda/komeda_wb_connector.c | 4 + drivers/gpu/drm/bridge/ite-it6505.c | 65 ++++---- drivers/gpu/drm/display/drm_dp_cec.c | 14 +- drivers/gpu/drm/drm_fb_helper.c | 14 +- drivers/gpu/drm/etnaviv/etnaviv_gem.c | 16 +- drivers/gpu/drm/i915/display/skl_universal_plane.c | 4 - drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c | 20 ++- drivers/gpu/drm/i915/selftests/i915_gem_gtt.c | 4 +- drivers/gpu/drm/msm/dp/dp_audio.c | 2 +- drivers/gpu/drm/rockchip/cdn-dp-core.c | 9 +- drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 1 + drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 120 +++++++++++---- drivers/gpu/drm/rockchip/rockchip_drm_vop2.h | 1 + drivers/gpu/drm/tidss/tidss_dispc.c | 22 +-- drivers/gpu/drm/v3d/v3d_perfmon.c | 5 + drivers/gpu/drm/virtio/virtgpu_drv.h | 7 + drivers/gpu/drm/virtio/virtgpu_plane.c | 58 +++++--- drivers/hid/hid-core.c | 2 + drivers/hid/hid-multitouch.c | 7 +- drivers/hid/hid-sensor-hub.c | 21 ++- drivers/hid/hid-thrustmaster.c | 8 + drivers/hid/wacom_wac.c | 5 + drivers/i2c/i2c-core-acpi.c | 22 +++ drivers/i3c/master.c | 2 +- drivers/i3c/master/i3c-master-cdns.c | 1 + drivers/iio/light/as73211.c | 24 ++- drivers/infiniband/hw/cxgb4/device.c | 6 +- drivers/infiniband/hw/efa/efa_main.c | 9 +- drivers/infiniband/hw/mlx4/main.c | 6 +- drivers/infiniband/hw/mlx5/odp.c | 32 ++-- drivers/infiniband/sw/rxe/rxe_pool.c | 11 +- drivers/infiniband/ulp/srp/ib_srp.c | 1 - drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 17 ++- drivers/irqchip/irq-apple-aic.c | 3 +- drivers/leds/leds-lp8860.c | 2 +- drivers/leds/leds-netxbig.c | 1 + drivers/mailbox/tegra-hsp.c | 6 +- drivers/md/dm-crypt.c | 27 ++-- drivers/media/dvb-frontends/cxd2841er.c | 8 +- drivers/media/i2c/ccs/ccs-core.c | 6 +- drivers/media/i2c/ccs/ccs-data.c | 14 +- drivers/media/i2c/imx412.c | 42 +++--- drivers/media/i2c/ov5640.c | 1 + drivers/media/i2c/ov9282.c | 2 +- drivers/media/platform/marvell/mcam-core.c | 7 +- drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c | 7 +- .../media/platform/samsung/exynos4-is/mipi-csis.c | 10 +- .../media/platform/samsung/s3c-camif/camif-core.c | 13 +- drivers/media/rc/iguanair.c | 4 +- drivers/media/test-drivers/vidtv/vidtv_bridge.c | 8 +- drivers/media/usb/dvb-usb-v2/lmedm04.c | 12 +- drivers/media/usb/uvc/uvc_ctrl.c | 8 +- drivers/media/usb/uvc/uvc_driver.c | 70 ++++----- drivers/media/usb/uvc/uvc_queue.c | 3 +- drivers/media/usb/uvc/uvc_status.c | 1 + drivers/media/v4l2-core/v4l2-mc.c | 2 +- drivers/memory/tegra/tegra20-emc.c | 8 +- drivers/mfd/lpc_ich.c | 3 +- drivers/mfd/syscon.c | 81 +++++++--- drivers/misc/cardreader/rtsx_usb.c | 15 ++ drivers/misc/fastrpc.c | 8 +- drivers/mmc/core/sdio.c | 2 + drivers/mmc/host/mtk-sd.c | 31 ++-- drivers/mmc/host/sdhci-msm.c | 53 ++++++- drivers/mtd/hyperbus/hbmc-am654.c | 25 ++-- drivers/mtd/nand/onenand/onenand_base.c | 1 + drivers/net/can/c_can/c_can_platform.c | 5 +- drivers/net/can/ctucanfd/ctucanfd_base.c | 10 +- drivers/net/ethernet/aquantia/atlantic/aq_nic.c | 4 +- drivers/net/ethernet/broadcom/bgmac.h | 3 +- drivers/net/ethernet/broadcom/tg3.c | 58 ++++++++ drivers/net/ethernet/davicom/dm9000.c | 3 +- drivers/net/ethernet/freescale/fec_main.c | 31 +++- drivers/net/ethernet/hisilicon/hns3/hnae3.c | 15 ++ drivers/net/ethernet/hisilicon/hns3/hnae3.h | 2 + drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 2 + .../ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 2 + .../ethernet/hisilicon/hns3/hns3vf/hclgevf_main.c | 2 + drivers/net/ethernet/intel/iavf/iavf_main.c | 19 ++- .../net/ethernet/mellanox/mlx5/core/lib/clock.c | 24 +-- drivers/net/ethernet/mellanox/mlxfw/mlxfw_fsm.c | 2 - .../net/ethernet/mellanox/mlxsw/spectrum_ethtool.c | 4 +- drivers/net/ethernet/renesas/sh_eth.c | 4 + drivers/net/ethernet/ti/am65-cpsw-nuss.c | 2 +- drivers/net/netdevsim/ipsec.c | 12 +- drivers/net/netdevsim/netdevsim.h | 1 + drivers/net/netdevsim/udp_tunnels.c | 23 +-- drivers/net/phy/nxp-c45-tja11xx.c | 2 + drivers/net/team/team.c | 11 +- drivers/net/tun.c | 2 +- drivers/net/usb/rtl8150.c | 22 +++ drivers/net/vxlan/vxlan_core.c | 7 +- drivers/net/vxlan/vxlan_vnifilter.c | 5 + drivers/net/wireless/ath/ath11k/dp_rx.c | 1 + drivers/net/wireless/ath/ath11k/hal_rx.c | 3 +- drivers/net/wireless/ath/wcn36xx/main.c | 5 +- .../wireless/broadcom/brcm80211/brcmfmac/core.c | 5 + .../net/wireless/broadcom/brcm80211/brcmfmac/of.c | 8 +- .../broadcom/brcm80211/brcmsmac/phy/phy_n.c | 3 + drivers/net/wireless/intel/iwlwifi/fw/acpi.c | 13 +- drivers/net/wireless/mediatek/mt76/mt7915/mmio.c | 2 +- drivers/net/wireless/mediatek/mt76/mt7921/main.c | 8 +- drivers/net/wireless/mediatek/mt76/usb.c | 4 +- drivers/net/wireless/realtek/rtlwifi/base.c | 29 +--- drivers/net/wireless/realtek/rtlwifi/base.h | 2 - drivers/net/wireless/realtek/rtlwifi/pci.c | 66 ++------- .../net/wireless/realtek/rtlwifi/rtl8192se/sw.c | 7 +- .../net/wireless/realtek/rtlwifi/rtl8821ae/fw.h | 4 +- drivers/net/wireless/realtek/rtlwifi/usb.c | 12 +- drivers/net/wireless/realtek/rtlwifi/wifi.h | 23 --- drivers/net/wireless/ti/wlcore/main.c | 10 +- drivers/net/wwan/iosm/iosm_ipc_pcie.c | 56 ++++++- drivers/nvme/host/core.c | 16 +- drivers/nvme/host/ioctl.c | 8 +- drivers/nvme/host/pci.c | 4 +- drivers/nvmem/core.c | 2 + drivers/nvmem/qcom-spmi-sdam.c | 1 + drivers/of/base.c | 8 +- drivers/of/of_reserved_mem.c | 7 +- drivers/opp/core.c | 156 ++++++++++++++++---- drivers/opp/of.c | 4 +- drivers/parport/parport_pc.c | 5 + drivers/pci/controller/pcie-rcar-ep.c | 2 +- drivers/pci/endpoint/functions/pci-epf-test.c | 51 +++---- drivers/pci/endpoint/pci-epc-core.c | 2 +- drivers/pci/endpoint/pci-epf-core.c | 1 + drivers/pci/quirks.c | 12 ++ drivers/pci/switch/switchtec.c | 26 ++++ drivers/pinctrl/pinctrl-cy8c95x0.c | 2 +- drivers/pinctrl/samsung/pinctrl-samsung.c | 2 +- drivers/pinctrl/stm32/pinctrl-stm32.c | 105 +++++++++---- drivers/platform/x86/acer-wmi.c | 4 + drivers/platform/x86/intel/int3472/discrete.c | 3 + drivers/platform/x86/intel/int3472/tps68470.c | 3 + drivers/pps/clients/pps-gpio.c | 4 +- drivers/pps/clients/pps-ktimer.c | 4 +- drivers/pps/clients/pps-ldisc.c | 6 +- drivers/pps/clients/pps_parport.c | 4 +- drivers/pps/kapi.c | 10 +- drivers/pps/kc.c | 10 +- drivers/pps/pps.c | 127 ++++++++-------- drivers/ptp/ptp_chardev.c | 4 + drivers/ptp/ptp_clock.c | 8 + drivers/ptp/ptp_ocp.c | 2 +- drivers/pwm/pwm-stm32-lp.c | 8 +- drivers/pwm/pwm-stm32.c | 7 +- drivers/regulator/core.c | 2 +- drivers/regulator/of_regulator.c | 14 +- drivers/remoteproc/remoteproc_core.c | 14 +- drivers/rtc/rtc-pcf85063.c | 11 +- drivers/rtc/rtc-zynqmp.c | 4 +- drivers/scsi/mpt3sas/mpt3sas_base.c | 3 +- drivers/scsi/qla2xxx/qla_def.h | 2 + drivers/scsi/qla2xxx/qla_dfs.c | 122 ++++++++++++--- drivers/scsi/qla2xxx/qla_gbl.h | 3 + drivers/scsi/qla2xxx/qla_init.c | 28 ++-- drivers/scsi/storvsc_drv.c | 1 + drivers/soc/atmel/soc.c | 2 +- drivers/soc/qcom/smem_state.c | 3 +- drivers/soc/qcom/socinfo.c | 2 +- drivers/spi/spi-zynq-qspi.c | 13 +- drivers/staging/media/imx/imx-media-of.c | 8 +- drivers/staging/media/max96712/max96712.c | 4 +- drivers/tty/serial/8250/8250.h | 2 + drivers/tty/serial/8250/8250_dma.c | 16 ++ drivers/tty/serial/8250/8250_pci.c | 10 ++ drivers/tty/serial/8250/8250_port.c | 41 +++++- drivers/tty/serial/sh-sci.c | 25 +++- drivers/tty/serial/xilinx_uartps.c | 10 +- drivers/ufs/core/ufs_bsg.c | 2 + drivers/usb/chipidea/ci_hdrc_imx.c | 31 ++-- drivers/usb/class/cdc-acm.c | 28 +++- drivers/usb/core/hub.c | 14 +- drivers/usb/core/quirks.c | 6 + drivers/usb/dwc2/gadget.c | 1 + drivers/usb/dwc3/core.c | 30 ++-- drivers/usb/dwc3/dwc3-am62.c | 1 + drivers/usb/dwc3/gadget.c | 34 +++++ drivers/usb/gadget/function/f_midi.c | 8 +- drivers/usb/gadget/function/f_tcm.c | 66 ++++----- drivers/usb/gadget/udc/renesas_usb3.c | 2 +- drivers/usb/host/pci-quirks.c | 9 ++ drivers/usb/host/xhci-ring.c | 3 +- drivers/usb/roles/class.c | 5 +- drivers/usb/serial/option.c | 49 +++--- drivers/usb/typec/tcpm/tcpci.c | 13 +- drivers/usb/typec/tcpm/tcpm.c | 10 +- drivers/vfio/iova_bitmap.c | 2 +- drivers/vfio/pci/vfio_pci_rdwr.c | 1 + drivers/vfio/platform/vfio_platform_common.c | 10 ++ drivers/video/fbdev/omap/lcd_dma.c | 4 +- drivers/video/fbdev/omap2/omapfb/dss/dss-of.c | 1 + drivers/xen/swiotlb-xen.c | 20 ++- fs/afs/dir.c | 7 +- fs/afs/xdr_fs.h | 2 +- fs/afs/yfsclient.c | 5 +- fs/binfmt_flat.c | 2 +- fs/btrfs/file.c | 6 +- fs/btrfs/inode.c | 4 +- fs/btrfs/relocation.c | 14 +- fs/btrfs/super.c | 2 +- fs/btrfs/transaction.c | 4 +- fs/cachefiles/interface.c | 14 +- fs/cachefiles/ondemand.c | 30 +++- fs/exec.c | 29 +++- fs/f2fs/dir.c | 53 +++++-- fs/f2fs/f2fs.h | 6 +- fs/f2fs/file.c | 13 ++ fs/f2fs/inline.c | 5 +- fs/file_table.c | 2 +- fs/nfs/flexfilelayout/flexfilelayout.c | 27 +++- fs/nfs/nfs42proc.c | 2 +- fs/nfs/nfs42xdr.c | 2 + fs/nfsd/nfs2acl.c | 2 + fs/nfsd/nfs3acl.c | 2 + fs/nfsd/nfs4callback.c | 8 +- fs/nilfs2/inode.c | 10 +- fs/nilfs2/mdt.c | 6 +- fs/nilfs2/page.c | 55 ++++--- fs/nilfs2/page.h | 4 +- fs/nilfs2/segment.c | 4 +- fs/ocfs2/dir.c | 25 +++- fs/ocfs2/quota_global.c | 5 + fs/ocfs2/super.c | 2 +- fs/ocfs2/symlink.c | 5 +- fs/orangefs/orangefs-debugfs.c | 4 +- fs/proc/array.c | 2 +- fs/pstore/blk.c | 4 +- fs/select.c | 4 +- fs/smb/client/cifsglob.h | 14 +- fs/smb/client/smb1ops.c | 2 +- fs/smb/client/smb2ops.c | 21 +-- fs/smb/client/smb2pdu.c | 2 +- fs/smb/client/smb2proto.h | 2 +- fs/smb/server/transport_ipc.c | 9 ++ fs/ubifs/debug.c | 22 +-- fs/xfs/xfs_inode.c | 7 +- fs/xfs/xfs_qm_bhv.c | 41 ++++-- fs/xfs/xfs_super.c | 11 +- include/linux/binfmts.h | 4 +- include/linux/cgroup-defs.h | 6 +- include/linux/efi.h | 1 + include/linux/i8253.h | 1 + include/linux/ieee80211.h | 11 +- include/linux/iommu.h | 2 +- include/linux/kallsyms.h | 2 +- include/linux/kvm_host.h | 9 ++ include/linux/mfd/syscon.h | 33 +++-- include/linux/mlx5/driver.h | 1 - include/linux/netdevice.h | 8 +- include/linux/pci_ids.h | 4 + include/linux/pm_opp.h | 72 ++++++--- include/linux/pps_kernel.h | 3 +- include/linux/sched.h | 4 +- include/linux/sched/task.h | 1 + include/linux/usb/tcpm.h | 3 +- include/net/ax25.h | 10 +- include/net/inetpeer.h | 12 +- include/net/l3mdev.h | 2 + include/net/net_namespace.h | 15 +- include/net/route.h | 9 +- include/net/sch_generic.h | 2 +- include/rv/da_monitor.h | 4 + include/uapi/linux/input-event-codes.h | 1 + include/ufs/ufs.h | 4 +- io_uring/io_uring.c | 5 +- io_uring/net.c | 5 + io_uring/poll.c | 4 + io_uring/rw.c | 10 ++ kernel/cgroup/cgroup.c | 20 ++- kernel/cgroup/rstat.c | 1 - kernel/debug/kdb/kdb_io.c | 2 + kernel/irq/internals.h | 9 +- kernel/padata.c | 45 ++++-- kernel/power/hibernate.c | 7 +- kernel/printk/printk.c | 2 +- kernel/sched/core.c | 8 +- kernel/sched/cpufreq_schedutil.c | 4 +- kernel/sched/fair.c | 17 ++- kernel/sched/stats.h | 22 +-- kernel/time/clocksource.c | 9 +- kernel/trace/bpf_trace.c | 2 +- lib/Kconfig.debug | 8 +- lib/maple_tree.c | 22 +-- mm/gup.c | 14 +- mm/kfence/core.c | 2 + mm/kmemleak.c | 2 +- net/ax25/af_ax25.c | 23 ++- net/ax25/ax25_dev.c | 4 +- net/ax25/ax25_ip.c | 3 +- net/ax25/ax25_out.c | 22 ++- net/ax25/ax25_route.c | 2 + net/batman-adv/bat_v.c | 2 - net/batman-adv/bat_v_elp.c | 122 ++++++++++----- net/batman-adv/bat_v_elp.h | 2 - net/batman-adv/types.h | 3 - net/bluetooth/l2cap_sock.c | 7 +- net/bluetooth/mgmt.c | 12 +- net/can/j1939/socket.c | 4 +- net/can/j1939/transport.c | 5 +- net/core/filter.c | 2 +- net/core/flow_dissector.c | 21 +-- net/core/neighbour.c | 11 +- net/core/sysctl_net_core.c | 5 +- net/dsa/slave.c | 7 +- net/ethtool/netlink.c | 2 +- net/hsr/hsr_forward.c | 7 +- net/ipv4/arp.c | 4 +- net/ipv4/devinet.c | 3 +- net/ipv4/icmp.c | 40 ++--- net/ipv4/inetpeer.c | 31 +--- net/ipv4/ip_fragment.c | 15 +- net/ipv4/ipmr_base.c | 3 - net/ipv4/route.c | 56 +++++-- net/ipv4/tcp_cubic.c | 8 +- net/ipv4/udp.c | 4 +- net/ipv6/icmp.c | 6 +- net/ipv6/ip6_output.c | 6 +- net/ipv6/mcast.c | 14 +- net/ipv6/ndisc.c | 36 +++-- net/ipv6/route.c | 7 +- net/ipv6/udp.c | 4 +- net/mac80211/debugfs_netdev.c | 2 +- net/mptcp/options.c | 13 +- net/mptcp/pm_netlink.c | 3 +- net/mptcp/protocol.c | 5 +- net/mptcp/protocol.h | 30 ++-- net/ncsi/internal.h | 2 + net/ncsi/ncsi-cmd.c | 3 +- net/ncsi/ncsi-manage.c | 38 +++-- net/ncsi/ncsi-pkt.h | 10 ++ net/ncsi/ncsi-rsp.c | 58 ++++++-- net/netfilter/nf_tables_api.c | 8 +- net/netfilter/nft_flow_offload.c | 16 +- net/nfc/nci/hci.c | 2 + net/openvswitch/datapath.c | 12 +- net/rose/af_rose.c | 40 +++-- net/rose/rose_timer.c | 15 ++ net/sched/sch_api.c | 4 + net/sched/sch_netem.c | 2 +- net/sched/sch_sfq.c | 58 ++++---- net/smc/af_smc.c | 2 +- net/smc/smc_rx.c | 37 +++-- net/smc/smc_rx.h | 8 +- net/tipc/crypto.c | 4 +- net/wireless/scan.c | 35 +++++ net/xfrm/xfrm_replay.c | 10 +- samples/landlock/sandboxer.c | 7 + scripts/Makefile.extrawarn | 5 +- scripts/Makefile.lib | 4 +- scripts/genksyms/genksyms.c | 11 +- scripts/genksyms/genksyms.h | 2 +- scripts/genksyms/parse.y | 18 ++- scripts/kconfig/conf.c | 6 + scripts/kconfig/confdata.c | 102 ++++++------- scripts/kconfig/lkc_proto.h | 2 + scripts/kconfig/symbol.c | 10 ++ security/landlock/fs.c | 11 +- security/safesetid/securityfs.c | 3 + security/tomoyo/common.c | 2 +- sound/pci/hda/hda_auto_parser.c | 8 +- sound/pci/hda/hda_auto_parser.h | 1 + sound/pci/hda/patch_realtek.c | 3 + sound/soc/amd/Kconfig | 2 +- sound/soc/amd/yc/acp6x-mach.c | 28 ++++ sound/soc/intel/avs/apl.c | 2 +- sound/soc/intel/boards/bytcr_rt5640.c | 17 ++- sound/soc/rockchip/rockchip_i2s_tdm.c | 31 +++- sound/soc/sh/rz-ssi.c | 3 +- sound/soc/soc-pcm.c | 31 +++- sound/soc/sunxi/sun4i-spdif.c | 7 + sound/usb/quirks.c | 2 + tools/bootconfig/main.c | 4 +- tools/lib/bpf/linker.c | 22 +-- tools/lib/bpf/usdt.c | 2 +- .../cpupower/utils/idle_monitor/mperf_monitor.c | 15 +- tools/testing/ktest/ktest.pl | 7 +- tools/testing/selftests/bpf/test_tc_tunnel.sh | 1 + .../drivers/net/netdevsim/udp_tunnel_nic.sh | 16 +- tools/testing/selftests/gpio/gpio-sim.sh | 31 +++- tools/testing/selftests/kselftest_harness.h | 24 +-- tools/testing/selftests/landlock/fs_test.c | 3 +- tools/testing/selftests/net/ipsec.c | 3 +- tools/testing/selftests/net/mptcp/mptcp_connect.c | 2 +- tools/testing/selftests/net/pmtu.sh | 112 +++++++++++--- tools/testing/selftests/net/rtnetlink.sh | 4 +- tools/testing/selftests/net/udpgso.c | 26 ++++ .../selftests/powerpc/benchmarks/gettimeofday.c | 2 +- .../testing/selftests/timers/clocksource-switch.c | 6 +- tools/tracing/rtla/src/osnoise.c | 2 +- tools/tracing/rtla/src/timerlat_hist.c | 19 ++- tools/tracing/rtla/src/timerlat_top.c | 20 ++- tools/tracing/rtla/src/trace.c | 8 + tools/tracing/rtla/src/trace.h | 1 + 543 files changed, 4585 insertions(+), 2316 deletions(-)

5 months, 4 weeks

9
15
0 0

[PATCH v2] gpio: pca953x: fix IRQ storm on system wake up

by Francesco Dolcini

From: Emanuele Ghidoli <emanuele.ghidoli(a)toradex.com> If an input changes state during wake-up and is used as an interrupt source, the IRQ handler reads the volatile input register to clear the interrupt mask and deassert the IRQ line. However, the IRQ handler is triggered before access to the register is granted, causing the read operation to fail. As a result, the IRQ handler enters a loop, repeatedly printing the "failed reading register" message, until `pca953x_resume` is eventually called, which restores the driver context and enables access to registers. Fix by disabling the IRQ line before entering suspend mode, and re-enabling it after the driver context is restored in `pca953x_resume`. An irq can be disabled with disable_irq() and still wake the system as long as the irq has wake enabled, so the wake-up functionality is preserved. Fixes: b76574300504 ("gpio: pca953x: Restore registers after suspend/resume cycle") Cc: stable(a)vger.kernel.org Signed-off-by: Emanuele Ghidoli <emanuele.ghidoli(a)toradex.com> Signed-off-by: Francesco Dolcini <francesco.dolcini(a)toradex.com> --- v1 -> v2 - Instead of calling PM ops with disabled interrupts, just disable the irq while going in suspend and re-enable it after restoring the context in resume function. --- drivers/gpio/gpio-pca953x.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c index ab2c0fd428fb..b852e4997629 100644 --- a/drivers/gpio/gpio-pca953x.c +++ b/drivers/gpio/gpio-pca953x.c @@ -1226,6 +1226,8 @@ static int pca953x_restore_context(struct pca953x_chip *chip) guard(mutex)(&chip->i2c_lock); + if (chip->client->irq > 0) + enable_irq(chip->client->irq); regcache_cache_only(chip->regmap, false); regcache_mark_dirty(chip->regmap); ret = pca953x_regcache_sync(chip); @@ -1238,6 +1240,10 @@ static int pca953x_restore_context(struct pca953x_chip *chip) static void pca953x_save_context(struct pca953x_chip *chip) { guard(mutex)(&chip->i2c_lock); + + /* Disable IRQ to prevent early triggering while regmap "cache only" is on */ + if (chip->client->irq > 0) + disable_irq(chip->client->irq); regcache_cache_only(chip->regmap, true); } -- 2.39.5

5 months, 4 weeks

5
5
0 0

FAILED: patch "[PATCH] KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x a2620f8932fa9fdabc3d78ed6efb004ca409019f # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051233-flatfoot-delete-7a4b@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a2620f8932fa9fdabc3d78ed6efb004ca409019f Mon Sep 17 00:00:00 2001 From: Mikhail Lobanov <m.lobanov(a)rosa.ru> Date: Mon, 14 Apr 2025 20:12:06 +0300 Subject: [PATCH] KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception Previously, commit ed129ec9057f ("KVM: x86: forcibly leave nested mode on vCPU reset") addressed an issue where a triple fault occurring in nested mode could lead to use-after-free scenarios. However, the commit did not handle the analogous situation for System Management Mode (SMM). This omission results in triggering a WARN when KVM forces a vCPU INIT after SHUTDOWN interception while the vCPU is in SMM. This situation was reprodused using Syzkaller by: 1) Creating a KVM VM and vCPU 2) Sending a KVM_SMI ioctl to explicitly enter SMM 3) Executing invalid instructions causing consecutive exceptions and eventually a triple fault The issue manifests as follows: WARNING: CPU: 0 PID: 25506 at arch/x86/kvm/x86.c:12112 kvm_vcpu_reset+0x1d2/0x1530 arch/x86/kvm/x86.c:12112 Modules linked in: CPU: 0 PID: 25506 Comm: syz-executor.0 Not tainted 6.1.130-syzkaller-00157-g164fe5dde9b6 #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kvm_vcpu_reset+0x1d2/0x1530 arch/x86/kvm/x86.c:12112 Call Trace: <TASK> shutdown_interception+0x66/0xb0 arch/x86/kvm/svm/svm.c:2136 svm_invoke_exit_handler+0x110/0x530 arch/x86/kvm/svm/svm.c:3395 svm_handle_exit+0x424/0x920 arch/x86/kvm/svm/svm.c:3457 vcpu_enter_guest arch/x86/kvm/x86.c:10959 [inline] vcpu_run+0x2c43/0x5a90 arch/x86/kvm/x86.c:11062 kvm_arch_vcpu_ioctl_run+0x50f/0x1cf0 arch/x86/kvm/x86.c:11283 kvm_vcpu_ioctl+0x570/0xf00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4122 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 Architecturally, INIT is blocked when the CPU is in SMM, hence KVM's WARN() in kvm_vcpu_reset() to guard against KVM bugs, e.g. to detect improper emulation of INIT. SHUTDOWN on SVM is a weird edge case where KVM needs to do _something_ sane with the VMCB, since it's technically undefined, and INIT is the least awful choice given KVM's ABI. So, double down on stuffing INIT on SHUTDOWN, and force the vCPU out of SMM to avoid any weirdness (and the WARN). Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Fixes: ed129ec9057f ("KVM: x86: forcibly leave nested mode on vCPU reset") Cc: stable(a)vger.kernel.org Suggested-by: Sean Christopherson <seanjc(a)google.com> Signed-off-by: Mikhail Lobanov <m.lobanov(a)rosa.ru> Link: https://lore.kernel.org/r/20250414171207.155121-1-m.lobanov@rosa.ru [sean: massage changelog, make it clear this isn't architectural behavior] Signed-off-by: Sean Christopherson <seanjc(a)google.com> diff --git a/arch/x86/kvm/smm.c b/arch/x86/kvm/smm.c index 699e551ec93b..9864c057187d 100644 --- a/arch/x86/kvm/smm.c +++ b/arch/x86/kvm/smm.c @@ -131,6 +131,7 @@ void kvm_smm_changed(struct kvm_vcpu *vcpu, bool entering_smm) kvm_mmu_reset_context(vcpu); } +EXPORT_SYMBOL_GPL(kvm_smm_changed); void process_smi(struct kvm_vcpu *vcpu) { diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index d5d0c5c3300b..c5470d842aed 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -2231,6 +2231,10 @@ static int shutdown_interception(struct kvm_vcpu *vcpu) */ if (!sev_es_guest(vcpu->kvm)) { clear_page(svm->vmcb); +#ifdef CONFIG_KVM_SMM + if (is_smm(vcpu)) + kvm_smm_changed(vcpu, false); +#endif kvm_vcpu_reset(vcpu, true); }

5 months, 4 weeks

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FAILED: patch "[PATCH] KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x a2620f8932fa9fdabc3d78ed6efb004ca409019f # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051231-surpass-scone-a484@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a2620f8932fa9fdabc3d78ed6efb004ca409019f Mon Sep 17 00:00:00 2001 From: Mikhail Lobanov <m.lobanov(a)rosa.ru> Date: Mon, 14 Apr 2025 20:12:06 +0300 Subject: [PATCH] KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception Previously, commit ed129ec9057f ("KVM: x86: forcibly leave nested mode on vCPU reset") addressed an issue where a triple fault occurring in nested mode could lead to use-after-free scenarios. However, the commit did not handle the analogous situation for System Management Mode (SMM). This omission results in triggering a WARN when KVM forces a vCPU INIT after SHUTDOWN interception while the vCPU is in SMM. This situation was reprodused using Syzkaller by: 1) Creating a KVM VM and vCPU 2) Sending a KVM_SMI ioctl to explicitly enter SMM 3) Executing invalid instructions causing consecutive exceptions and eventually a triple fault The issue manifests as follows: WARNING: CPU: 0 PID: 25506 at arch/x86/kvm/x86.c:12112 kvm_vcpu_reset+0x1d2/0x1530 arch/x86/kvm/x86.c:12112 Modules linked in: CPU: 0 PID: 25506 Comm: syz-executor.0 Not tainted 6.1.130-syzkaller-00157-g164fe5dde9b6 #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kvm_vcpu_reset+0x1d2/0x1530 arch/x86/kvm/x86.c:12112 Call Trace: <TASK> shutdown_interception+0x66/0xb0 arch/x86/kvm/svm/svm.c:2136 svm_invoke_exit_handler+0x110/0x530 arch/x86/kvm/svm/svm.c:3395 svm_handle_exit+0x424/0x920 arch/x86/kvm/svm/svm.c:3457 vcpu_enter_guest arch/x86/kvm/x86.c:10959 [inline] vcpu_run+0x2c43/0x5a90 arch/x86/kvm/x86.c:11062 kvm_arch_vcpu_ioctl_run+0x50f/0x1cf0 arch/x86/kvm/x86.c:11283 kvm_vcpu_ioctl+0x570/0xf00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4122 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 Architecturally, INIT is blocked when the CPU is in SMM, hence KVM's WARN() in kvm_vcpu_reset() to guard against KVM bugs, e.g. to detect improper emulation of INIT. SHUTDOWN on SVM is a weird edge case where KVM needs to do _something_ sane with the VMCB, since it's technically undefined, and INIT is the least awful choice given KVM's ABI. So, double down on stuffing INIT on SHUTDOWN, and force the vCPU out of SMM to avoid any weirdness (and the WARN). Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Fixes: ed129ec9057f ("KVM: x86: forcibly leave nested mode on vCPU reset") Cc: stable(a)vger.kernel.org Suggested-by: Sean Christopherson <seanjc(a)google.com> Signed-off-by: Mikhail Lobanov <m.lobanov(a)rosa.ru> Link: https://lore.kernel.org/r/20250414171207.155121-1-m.lobanov@rosa.ru [sean: massage changelog, make it clear this isn't architectural behavior] Signed-off-by: Sean Christopherson <seanjc(a)google.com> diff --git a/arch/x86/kvm/smm.c b/arch/x86/kvm/smm.c index 699e551ec93b..9864c057187d 100644 --- a/arch/x86/kvm/smm.c +++ b/arch/x86/kvm/smm.c @@ -131,6 +131,7 @@ void kvm_smm_changed(struct kvm_vcpu *vcpu, bool entering_smm) kvm_mmu_reset_context(vcpu); } +EXPORT_SYMBOL_GPL(kvm_smm_changed); void process_smi(struct kvm_vcpu *vcpu) { diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index d5d0c5c3300b..c5470d842aed 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -2231,6 +2231,10 @@ static int shutdown_interception(struct kvm_vcpu *vcpu) */ if (!sev_es_guest(vcpu->kvm)) { clear_page(svm->vmcb); +#ifdef CONFIG_KVM_SMM + if (is_smm(vcpu)) + kvm_smm_changed(vcpu, false); +#endif kvm_vcpu_reset(vcpu, true); }

5 months, 4 weeks

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FAILED: patch "[PATCH] KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x a2620f8932fa9fdabc3d78ed6efb004ca409019f # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051230-trickle-unspoiled-1f11@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From a2620f8932fa9fdabc3d78ed6efb004ca409019f Mon Sep 17 00:00:00 2001 From: Mikhail Lobanov <m.lobanov(a)rosa.ru> Date: Mon, 14 Apr 2025 20:12:06 +0300 Subject: [PATCH] KVM: SVM: Forcibly leave SMM mode on SHUTDOWN interception Previously, commit ed129ec9057f ("KVM: x86: forcibly leave nested mode on vCPU reset") addressed an issue where a triple fault occurring in nested mode could lead to use-after-free scenarios. However, the commit did not handle the analogous situation for System Management Mode (SMM). This omission results in triggering a WARN when KVM forces a vCPU INIT after SHUTDOWN interception while the vCPU is in SMM. This situation was reprodused using Syzkaller by: 1) Creating a KVM VM and vCPU 2) Sending a KVM_SMI ioctl to explicitly enter SMM 3) Executing invalid instructions causing consecutive exceptions and eventually a triple fault The issue manifests as follows: WARNING: CPU: 0 PID: 25506 at arch/x86/kvm/x86.c:12112 kvm_vcpu_reset+0x1d2/0x1530 arch/x86/kvm/x86.c:12112 Modules linked in: CPU: 0 PID: 25506 Comm: syz-executor.0 Not tainted 6.1.130-syzkaller-00157-g164fe5dde9b6 #0 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kvm_vcpu_reset+0x1d2/0x1530 arch/x86/kvm/x86.c:12112 Call Trace: <TASK> shutdown_interception+0x66/0xb0 arch/x86/kvm/svm/svm.c:2136 svm_invoke_exit_handler+0x110/0x530 arch/x86/kvm/svm/svm.c:3395 svm_handle_exit+0x424/0x920 arch/x86/kvm/svm/svm.c:3457 vcpu_enter_guest arch/x86/kvm/x86.c:10959 [inline] vcpu_run+0x2c43/0x5a90 arch/x86/kvm/x86.c:11062 kvm_arch_vcpu_ioctl_run+0x50f/0x1cf0 arch/x86/kvm/x86.c:11283 kvm_vcpu_ioctl+0x570/0xf00 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4122 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 Architecturally, INIT is blocked when the CPU is in SMM, hence KVM's WARN() in kvm_vcpu_reset() to guard against KVM bugs, e.g. to detect improper emulation of INIT. SHUTDOWN on SVM is a weird edge case where KVM needs to do _something_ sane with the VMCB, since it's technically undefined, and INIT is the least awful choice given KVM's ABI. So, double down on stuffing INIT on SHUTDOWN, and force the vCPU out of SMM to avoid any weirdness (and the WARN). Found by Linux Verification Center (linuxtesting.org) with Syzkaller. Fixes: ed129ec9057f ("KVM: x86: forcibly leave nested mode on vCPU reset") Cc: stable(a)vger.kernel.org Suggested-by: Sean Christopherson <seanjc(a)google.com> Signed-off-by: Mikhail Lobanov <m.lobanov(a)rosa.ru> Link: https://lore.kernel.org/r/20250414171207.155121-1-m.lobanov@rosa.ru [sean: massage changelog, make it clear this isn't architectural behavior] Signed-off-by: Sean Christopherson <seanjc(a)google.com> diff --git a/arch/x86/kvm/smm.c b/arch/x86/kvm/smm.c index 699e551ec93b..9864c057187d 100644 --- a/arch/x86/kvm/smm.c +++ b/arch/x86/kvm/smm.c @@ -131,6 +131,7 @@ void kvm_smm_changed(struct kvm_vcpu *vcpu, bool entering_smm) kvm_mmu_reset_context(vcpu); } +EXPORT_SYMBOL_GPL(kvm_smm_changed); void process_smi(struct kvm_vcpu *vcpu) { diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index d5d0c5c3300b..c5470d842aed 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -2231,6 +2231,10 @@ static int shutdown_interception(struct kvm_vcpu *vcpu) */ if (!sev_es_guest(vcpu->kvm)) { clear_page(svm->vmcb); +#ifdef CONFIG_KVM_SMM + if (is_smm(vcpu)) + kvm_smm_changed(vcpu, false); +#endif kvm_vcpu_reset(vcpu, true); }

5 months, 4 weeks

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FAILED: patch "[PATCH] KVM: x86/mmu: Prevent installing hugepages when mem" failed to apply to 6.12-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.12-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.12.y git checkout FETCH_HEAD git cherry-pick -x 9129633d568edd36aa22bf703b12835153cec985 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051217-botch-sloped-8d28@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 9129633d568edd36aa22bf703b12835153cec985 Mon Sep 17 00:00:00 2001 From: Sean Christopherson <seanjc(a)google.com> Date: Wed, 30 Apr 2025 15:09:54 -0700 Subject: [PATCH] KVM: x86/mmu: Prevent installing hugepages when mem attributes are changing When changing memory attributes on a subset of a potential hugepage, add the hugepage to the invalidation range tracking to prevent installing a hugepage until the attributes are fully updated. Like the actual hugepage tracking updates in kvm_arch_post_set_memory_attributes(), process only the head and tail pages, as any potential hugepages that are entirely covered by the range will already be tracked. Note, only hugepage chunks whose current attributes are NOT mixed need to be added to the invalidation set, as mixed attributes already prevent installing a hugepage, and it's perfectly safe to install a smaller mapping for a gfn whose attributes aren't changing. Fixes: 8dd2eee9d526 ("KVM: x86/mmu: Handle page fault for private memory") Cc: stable(a)vger.kernel.org Reported-by: Michael Roth <michael.roth(a)amd.com> Tested-by: Michael Roth <michael.roth(a)amd.com> Link: https://lore.kernel.org/r/20250430220954.522672-1-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc(a)google.com> diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 387464ebe8e8..8d1b632e33d2 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -7670,32 +7670,6 @@ void kvm_mmu_pre_destroy_vm(struct kvm *kvm) } #ifdef CONFIG_KVM_GENERIC_MEMORY_ATTRIBUTES -bool kvm_arch_pre_set_memory_attributes(struct kvm *kvm, - struct kvm_gfn_range *range) -{ - /* - * Zap SPTEs even if the slot can't be mapped PRIVATE. KVM x86 only - * supports KVM_MEMORY_ATTRIBUTE_PRIVATE, and so it *seems* like KVM - * can simply ignore such slots. But if userspace is making memory - * PRIVATE, then KVM must prevent the guest from accessing the memory - * as shared. And if userspace is making memory SHARED and this point - * is reached, then at least one page within the range was previously - * PRIVATE, i.e. the slot's possible hugepage ranges are changing. - * Zapping SPTEs in this case ensures KVM will reassess whether or not - * a hugepage can be used for affected ranges. - */ - if (WARN_ON_ONCE(!kvm_arch_has_private_mem(kvm))) - return false; - - /* Unmap the old attribute page. */ - if (range->arg.attributes & KVM_MEMORY_ATTRIBUTE_PRIVATE) - range->attr_filter = KVM_FILTER_SHARED; - else - range->attr_filter = KVM_FILTER_PRIVATE; - - return kvm_unmap_gfn_range(kvm, range); -} - static bool hugepage_test_mixed(struct kvm_memory_slot *slot, gfn_t gfn, int level) { @@ -7714,6 +7688,69 @@ static void hugepage_set_mixed(struct kvm_memory_slot *slot, gfn_t gfn, lpage_info_slot(gfn, slot, level)->disallow_lpage |= KVM_LPAGE_MIXED_FLAG; } +bool kvm_arch_pre_set_memory_attributes(struct kvm *kvm, + struct kvm_gfn_range *range) +{ + struct kvm_memory_slot *slot = range->slot; + int level; + + /* + * Zap SPTEs even if the slot can't be mapped PRIVATE. KVM x86 only + * supports KVM_MEMORY_ATTRIBUTE_PRIVATE, and so it *seems* like KVM + * can simply ignore such slots. But if userspace is making memory + * PRIVATE, then KVM must prevent the guest from accessing the memory + * as shared. And if userspace is making memory SHARED and this point + * is reached, then at least one page within the range was previously + * PRIVATE, i.e. the slot's possible hugepage ranges are changing. + * Zapping SPTEs in this case ensures KVM will reassess whether or not + * a hugepage can be used for affected ranges. + */ + if (WARN_ON_ONCE(!kvm_arch_has_private_mem(kvm))) + return false; + + if (WARN_ON_ONCE(range->end <= range->start)) + return false; + + /* + * If the head and tail pages of the range currently allow a hugepage, + * i.e. reside fully in the slot and don't have mixed attributes, then + * add each corresponding hugepage range to the ongoing invalidation, + * e.g. to prevent KVM from creating a hugepage in response to a fault + * for a gfn whose attributes aren't changing. Note, only the range + * of gfns whose attributes are being modified needs to be explicitly + * unmapped, as that will unmap any existing hugepages. + */ + for (level = PG_LEVEL_2M; level <= KVM_MAX_HUGEPAGE_LEVEL; level++) { + gfn_t start = gfn_round_for_level(range->start, level); + gfn_t end = gfn_round_for_level(range->end - 1, level); + gfn_t nr_pages = KVM_PAGES_PER_HPAGE(level); + + if ((start != range->start || start + nr_pages > range->end) && + start >= slot->base_gfn && + start + nr_pages <= slot->base_gfn + slot->npages && + !hugepage_test_mixed(slot, start, level)) + kvm_mmu_invalidate_range_add(kvm, start, start + nr_pages); + + if (end == start) + continue; + + if ((end + nr_pages) > range->end && + (end + nr_pages) <= (slot->base_gfn + slot->npages) && + !hugepage_test_mixed(slot, end, level)) + kvm_mmu_invalidate_range_add(kvm, end, end + nr_pages); + } + + /* Unmap the old attribute page. */ + if (range->arg.attributes & KVM_MEMORY_ATTRIBUTE_PRIVATE) + range->attr_filter = KVM_FILTER_SHARED; + else + range->attr_filter = KVM_FILTER_PRIVATE; + + return kvm_unmap_gfn_range(kvm, range); +} + + + static bool hugepage_has_attrs(struct kvm *kvm, struct kvm_memory_slot *slot, gfn_t gfn, int level, unsigned long attrs) {

5 months, 4 weeks

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FAILED: patch "[PATCH] selftests/mm: compaction_test: support platform with huge" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x ab00ddd802f80e31fc9639c652d736fe3913feae # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051246-book-chase-1d4c@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From ab00ddd802f80e31fc9639c652d736fe3913feae Mon Sep 17 00:00:00 2001 From: Feng Tang <feng.tang(a)linux.alibaba.com> Date: Wed, 23 Apr 2025 18:36:45 +0800 Subject: [PATCH] selftests/mm: compaction_test: support platform with huge mount of memory When running mm selftest to verify mm patches, 'compaction_test' case failed on an x86 server with 1TB memory. And the root cause is that it has too much free memory than what the test supports. The test case tries to allocate 100000 huge pages, which is about 200 GB for that x86 server, and when it succeeds, it expects it's large than 1/3 of 80% of the free memory in system. This logic only works for platform with 750 GB ( 200 / (1/3) / 80% ) or less free memory, and may raise false alarm for others. Fix it by changing the fixed page number to self-adjustable number according to the real number of free memory. Link: https://lkml.kernel.org/r/20250423103645.2758-1-feng.tang@linux.alibaba.com Fixes: bd67d5c15cc1 ("Test compaction of mlocked memory") Signed-off-by: Feng Tang <feng.tang(a)linux.alibaba.com> Acked-by: Dev Jain <dev.jain(a)arm.com> Reviewed-by: Baolin Wang <baolin.wang(a)linux.alibaba.com> Tested-by: Baolin Wang <baolin.wang(a)inux.alibaba.com> Cc: Shuah Khan <shuah(a)kernel.org> Cc: Sri Jayaramappa <sjayaram(a)akamai.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/tools/testing/selftests/mm/compaction_test.c b/tools/testing/selftests/mm/compaction_test.c index 2c3a0eb6b22d..9bc4591c7b16 100644 --- a/tools/testing/selftests/mm/compaction_test.c +++ b/tools/testing/selftests/mm/compaction_test.c @@ -90,6 +90,8 @@ int check_compaction(unsigned long mem_free, unsigned long hugepage_size, int compaction_index = 0; char nr_hugepages[20] = {0}; char init_nr_hugepages[24] = {0}; + char target_nr_hugepages[24] = {0}; + int slen; snprintf(init_nr_hugepages, sizeof(init_nr_hugepages), "%lu", initial_nr_hugepages); @@ -106,11 +108,18 @@ int check_compaction(unsigned long mem_free, unsigned long hugepage_size, goto out; } - /* Request a large number of huge pages. The Kernel will allocate - as much as it can */ - if (write(fd, "100000", (6*sizeof(char))) != (6*sizeof(char))) { - ksft_print_msg("Failed to write 100000 to /proc/sys/vm/nr_hugepages: %s\n", - strerror(errno)); + /* + * Request huge pages for about half of the free memory. The Kernel + * will allocate as much as it can, and we expect it will get at least 1/3 + */ + nr_hugepages_ul = mem_free / hugepage_size / 2; + snprintf(target_nr_hugepages, sizeof(target_nr_hugepages), + "%lu", nr_hugepages_ul); + + slen = strlen(target_nr_hugepages); + if (write(fd, target_nr_hugepages, slen) != slen) { + ksft_print_msg("Failed to write %lu to /proc/sys/vm/nr_hugepages: %s\n", + nr_hugepages_ul, strerror(errno)); goto close_fd; }

5 months, 4 weeks

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FAILED: patch "[PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 95567729173e62e0e60a1f8ad9eb2e1320a8ccac # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051236-dense-economy-c808@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 95567729173e62e0e60a1f8ad9eb2e1320a8ccac Mon Sep 17 00:00:00 2001 From: Peter Xu <peterx(a)redhat.com> Date: Thu, 24 Apr 2025 17:57:28 -0400 Subject: [PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN race While discussing some userfaultfd relevant issues recently, Andrea noticed a potential ABI breakage with -EAGAIN on almost all userfaultfd ioctl()s. Quote from Andrea, explaining how -EAGAIN was processed, and how this should fix it (taking example of UFFDIO_COPY ioctl): The "mmap_changing" and "stale pmd" conditions are already reported as -EAGAIN written in the copy field, this does not change it. This change removes the subnormal case that left copy.copy uninitialized and required apps to explicitly set the copy field to get deterministic behavior (which is a requirement contrary to the documentation in both the manpage and source code). In turn there's no alteration to backwards compatibility as result of this change because userland will find the copy field consistently set to -EAGAIN, and not anymore sometime -EAGAIN and sometime uninitialized. Even then the change only can make a difference to non cooperative users of userfaultfd, so when UFFD_FEATURE_EVENT_* is enabled, which is not true for the vast majority of apps using userfaultfd or this unintended uninitialized field may have been noticed sooner. Meanwhile, since this bug existed for years, it also almost affects all ioctl()s that was introduced later. Besides UFFDIO_ZEROPAGE, these also get affected in the same way: - UFFDIO_CONTINUE - UFFDIO_POISON - UFFDIO_MOVE This patch should have fixed all of them. Link: https://lkml.kernel.org/r/20250424215729.194656-2-peterx@redhat.com Fixes: df2cc96e7701 ("userfaultfd: prevent non-cooperative events vs mcopy_atomic races") Fixes: f619147104c8 ("userfaultfd: add UFFDIO_CONTINUE ioctl") Fixes: fc71884a5f59 ("mm: userfaultfd: add new UFFDIO_POISON ioctl") Fixes: adef440691ba ("userfaultfd: UFFDIO_MOVE uABI") Signed-off-by: Peter Xu <peterx(a)redhat.com> Reported-by: Andrea Arcangeli <aarcange(a)redhat.com> Suggested-by: Andrea Arcangeli <aarcange(a)redhat.com> Reviewed-by: David Hildenbrand <david(a)redhat.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Axel Rasmussen <axelrasmussen(a)google.com> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index d80f94346199..22f4bf956ba1 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -1585,8 +1585,11 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx, user_uffdio_copy = (struct uffdio_copy __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_copy->copy))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_copy, user_uffdio_copy, @@ -1641,8 +1644,11 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx, user_uffdio_zeropage = (struct uffdio_zeropage __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_zeropage->zeropage))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_zeropage, user_uffdio_zeropage, @@ -1744,8 +1750,11 @@ static int userfaultfd_continue(struct userfaultfd_ctx *ctx, unsigned long arg) user_uffdio_continue = (struct uffdio_continue __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_continue->mapped))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_continue, user_uffdio_continue, @@ -1801,8 +1810,11 @@ static inline int userfaultfd_poison(struct userfaultfd_ctx *ctx, unsigned long user_uffdio_poison = (struct uffdio_poison __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_poison->updated))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_poison, user_uffdio_poison, @@ -1870,8 +1882,12 @@ static int userfaultfd_move(struct userfaultfd_ctx *ctx, user_uffdio_move = (struct uffdio_move __user *) arg; - if (atomic_read(&ctx->mmap_changing)) - return -EAGAIN; + ret = -EAGAIN; + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_move->move))) + return -EFAULT; + goto out; + } if (copy_from_user(&uffdio_move, user_uffdio_move, /* don't copy "move" last field */

5 months, 4 weeks

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FAILED: patch "[PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x 95567729173e62e0e60a1f8ad9eb2e1320a8ccac # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051235-unusual-viewer-d8fa@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 95567729173e62e0e60a1f8ad9eb2e1320a8ccac Mon Sep 17 00:00:00 2001 From: Peter Xu <peterx(a)redhat.com> Date: Thu, 24 Apr 2025 17:57:28 -0400 Subject: [PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN race While discussing some userfaultfd relevant issues recently, Andrea noticed a potential ABI breakage with -EAGAIN on almost all userfaultfd ioctl()s. Quote from Andrea, explaining how -EAGAIN was processed, and how this should fix it (taking example of UFFDIO_COPY ioctl): The "mmap_changing" and "stale pmd" conditions are already reported as -EAGAIN written in the copy field, this does not change it. This change removes the subnormal case that left copy.copy uninitialized and required apps to explicitly set the copy field to get deterministic behavior (which is a requirement contrary to the documentation in both the manpage and source code). In turn there's no alteration to backwards compatibility as result of this change because userland will find the copy field consistently set to -EAGAIN, and not anymore sometime -EAGAIN and sometime uninitialized. Even then the change only can make a difference to non cooperative users of userfaultfd, so when UFFD_FEATURE_EVENT_* is enabled, which is not true for the vast majority of apps using userfaultfd or this unintended uninitialized field may have been noticed sooner. Meanwhile, since this bug existed for years, it also almost affects all ioctl()s that was introduced later. Besides UFFDIO_ZEROPAGE, these also get affected in the same way: - UFFDIO_CONTINUE - UFFDIO_POISON - UFFDIO_MOVE This patch should have fixed all of them. Link: https://lkml.kernel.org/r/20250424215729.194656-2-peterx@redhat.com Fixes: df2cc96e7701 ("userfaultfd: prevent non-cooperative events vs mcopy_atomic races") Fixes: f619147104c8 ("userfaultfd: add UFFDIO_CONTINUE ioctl") Fixes: fc71884a5f59 ("mm: userfaultfd: add new UFFDIO_POISON ioctl") Fixes: adef440691ba ("userfaultfd: UFFDIO_MOVE uABI") Signed-off-by: Peter Xu <peterx(a)redhat.com> Reported-by: Andrea Arcangeli <aarcange(a)redhat.com> Suggested-by: Andrea Arcangeli <aarcange(a)redhat.com> Reviewed-by: David Hildenbrand <david(a)redhat.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Axel Rasmussen <axelrasmussen(a)google.com> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index d80f94346199..22f4bf956ba1 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -1585,8 +1585,11 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx, user_uffdio_copy = (struct uffdio_copy __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_copy->copy))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_copy, user_uffdio_copy, @@ -1641,8 +1644,11 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx, user_uffdio_zeropage = (struct uffdio_zeropage __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_zeropage->zeropage))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_zeropage, user_uffdio_zeropage, @@ -1744,8 +1750,11 @@ static int userfaultfd_continue(struct userfaultfd_ctx *ctx, unsigned long arg) user_uffdio_continue = (struct uffdio_continue __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_continue->mapped))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_continue, user_uffdio_continue, @@ -1801,8 +1810,11 @@ static inline int userfaultfd_poison(struct userfaultfd_ctx *ctx, unsigned long user_uffdio_poison = (struct uffdio_poison __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_poison->updated))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_poison, user_uffdio_poison, @@ -1870,8 +1882,12 @@ static int userfaultfd_move(struct userfaultfd_ctx *ctx, user_uffdio_move = (struct uffdio_move __user *) arg; - if (atomic_read(&ctx->mmap_changing)) - return -EAGAIN; + ret = -EAGAIN; + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_move->move))) + return -EFAULT; + goto out; + } if (copy_from_user(&uffdio_move, user_uffdio_move, /* don't copy "move" last field */

5 months, 4 weeks

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FAILED: patch "[PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x 95567729173e62e0e60a1f8ad9eb2e1320a8ccac # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051234-legwarmer-usable-d2c7@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 95567729173e62e0e60a1f8ad9eb2e1320a8ccac Mon Sep 17 00:00:00 2001 From: Peter Xu <peterx(a)redhat.com> Date: Thu, 24 Apr 2025 17:57:28 -0400 Subject: [PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN race While discussing some userfaultfd relevant issues recently, Andrea noticed a potential ABI breakage with -EAGAIN on almost all userfaultfd ioctl()s. Quote from Andrea, explaining how -EAGAIN was processed, and how this should fix it (taking example of UFFDIO_COPY ioctl): The "mmap_changing" and "stale pmd" conditions are already reported as -EAGAIN written in the copy field, this does not change it. This change removes the subnormal case that left copy.copy uninitialized and required apps to explicitly set the copy field to get deterministic behavior (which is a requirement contrary to the documentation in both the manpage and source code). In turn there's no alteration to backwards compatibility as result of this change because userland will find the copy field consistently set to -EAGAIN, and not anymore sometime -EAGAIN and sometime uninitialized. Even then the change only can make a difference to non cooperative users of userfaultfd, so when UFFD_FEATURE_EVENT_* is enabled, which is not true for the vast majority of apps using userfaultfd or this unintended uninitialized field may have been noticed sooner. Meanwhile, since this bug existed for years, it also almost affects all ioctl()s that was introduced later. Besides UFFDIO_ZEROPAGE, these also get affected in the same way: - UFFDIO_CONTINUE - UFFDIO_POISON - UFFDIO_MOVE This patch should have fixed all of them. Link: https://lkml.kernel.org/r/20250424215729.194656-2-peterx@redhat.com Fixes: df2cc96e7701 ("userfaultfd: prevent non-cooperative events vs mcopy_atomic races") Fixes: f619147104c8 ("userfaultfd: add UFFDIO_CONTINUE ioctl") Fixes: fc71884a5f59 ("mm: userfaultfd: add new UFFDIO_POISON ioctl") Fixes: adef440691ba ("userfaultfd: UFFDIO_MOVE uABI") Signed-off-by: Peter Xu <peterx(a)redhat.com> Reported-by: Andrea Arcangeli <aarcange(a)redhat.com> Suggested-by: Andrea Arcangeli <aarcange(a)redhat.com> Reviewed-by: David Hildenbrand <david(a)redhat.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Axel Rasmussen <axelrasmussen(a)google.com> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index d80f94346199..22f4bf956ba1 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -1585,8 +1585,11 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx, user_uffdio_copy = (struct uffdio_copy __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_copy->copy))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_copy, user_uffdio_copy, @@ -1641,8 +1644,11 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx, user_uffdio_zeropage = (struct uffdio_zeropage __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_zeropage->zeropage))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_zeropage, user_uffdio_zeropage, @@ -1744,8 +1750,11 @@ static int userfaultfd_continue(struct userfaultfd_ctx *ctx, unsigned long arg) user_uffdio_continue = (struct uffdio_continue __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_continue->mapped))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_continue, user_uffdio_continue, @@ -1801,8 +1810,11 @@ static inline int userfaultfd_poison(struct userfaultfd_ctx *ctx, unsigned long user_uffdio_poison = (struct uffdio_poison __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_poison->updated))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_poison, user_uffdio_poison, @@ -1870,8 +1882,12 @@ static int userfaultfd_move(struct userfaultfd_ctx *ctx, user_uffdio_move = (struct uffdio_move __user *) arg; - if (atomic_read(&ctx->mmap_changing)) - return -EAGAIN; + ret = -EAGAIN; + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_move->move))) + return -EFAULT; + goto out; + } if (copy_from_user(&uffdio_move, user_uffdio_move, /* don't copy "move" last field */

5 months, 4 weeks

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FAILED: patch "[PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x 95567729173e62e0e60a1f8ad9eb2e1320a8ccac # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051228-laurel-hypnoses-428f@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 95567729173e62e0e60a1f8ad9eb2e1320a8ccac Mon Sep 17 00:00:00 2001 From: Peter Xu <peterx(a)redhat.com> Date: Thu, 24 Apr 2025 17:57:28 -0400 Subject: [PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN race While discussing some userfaultfd relevant issues recently, Andrea noticed a potential ABI breakage with -EAGAIN on almost all userfaultfd ioctl()s. Quote from Andrea, explaining how -EAGAIN was processed, and how this should fix it (taking example of UFFDIO_COPY ioctl): The "mmap_changing" and "stale pmd" conditions are already reported as -EAGAIN written in the copy field, this does not change it. This change removes the subnormal case that left copy.copy uninitialized and required apps to explicitly set the copy field to get deterministic behavior (which is a requirement contrary to the documentation in both the manpage and source code). In turn there's no alteration to backwards compatibility as result of this change because userland will find the copy field consistently set to -EAGAIN, and not anymore sometime -EAGAIN and sometime uninitialized. Even then the change only can make a difference to non cooperative users of userfaultfd, so when UFFD_FEATURE_EVENT_* is enabled, which is not true for the vast majority of apps using userfaultfd or this unintended uninitialized field may have been noticed sooner. Meanwhile, since this bug existed for years, it also almost affects all ioctl()s that was introduced later. Besides UFFDIO_ZEROPAGE, these also get affected in the same way: - UFFDIO_CONTINUE - UFFDIO_POISON - UFFDIO_MOVE This patch should have fixed all of them. Link: https://lkml.kernel.org/r/20250424215729.194656-2-peterx@redhat.com Fixes: df2cc96e7701 ("userfaultfd: prevent non-cooperative events vs mcopy_atomic races") Fixes: f619147104c8 ("userfaultfd: add UFFDIO_CONTINUE ioctl") Fixes: fc71884a5f59 ("mm: userfaultfd: add new UFFDIO_POISON ioctl") Fixes: adef440691ba ("userfaultfd: UFFDIO_MOVE uABI") Signed-off-by: Peter Xu <peterx(a)redhat.com> Reported-by: Andrea Arcangeli <aarcange(a)redhat.com> Suggested-by: Andrea Arcangeli <aarcange(a)redhat.com> Reviewed-by: David Hildenbrand <david(a)redhat.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Axel Rasmussen <axelrasmussen(a)google.com> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index d80f94346199..22f4bf956ba1 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -1585,8 +1585,11 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx, user_uffdio_copy = (struct uffdio_copy __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_copy->copy))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_copy, user_uffdio_copy, @@ -1641,8 +1644,11 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx, user_uffdio_zeropage = (struct uffdio_zeropage __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_zeropage->zeropage))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_zeropage, user_uffdio_zeropage, @@ -1744,8 +1750,11 @@ static int userfaultfd_continue(struct userfaultfd_ctx *ctx, unsigned long arg) user_uffdio_continue = (struct uffdio_continue __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_continue->mapped))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_continue, user_uffdio_continue, @@ -1801,8 +1810,11 @@ static inline int userfaultfd_poison(struct userfaultfd_ctx *ctx, unsigned long user_uffdio_poison = (struct uffdio_poison __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_poison->updated))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_poison, user_uffdio_poison, @@ -1870,8 +1882,12 @@ static int userfaultfd_move(struct userfaultfd_ctx *ctx, user_uffdio_move = (struct uffdio_move __user *) arg; - if (atomic_read(&ctx->mmap_changing)) - return -EAGAIN; + ret = -EAGAIN; + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_move->move))) + return -EFAULT; + goto out; + } if (copy_from_user(&uffdio_move, user_uffdio_move, /* don't copy "move" last field */

5 months, 4 weeks

1
0
0 0

FAILED: patch "[PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN" failed to apply to 6.6-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.6-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y git checkout FETCH_HEAD git cherry-pick -x 95567729173e62e0e60a1f8ad9eb2e1320a8ccac # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051227-malt-universe-29e7@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 95567729173e62e0e60a1f8ad9eb2e1320a8ccac Mon Sep 17 00:00:00 2001 From: Peter Xu <peterx(a)redhat.com> Date: Thu, 24 Apr 2025 17:57:28 -0400 Subject: [PATCH] mm/userfaultfd: fix uninitialized output field for -EAGAIN race While discussing some userfaultfd relevant issues recently, Andrea noticed a potential ABI breakage with -EAGAIN on almost all userfaultfd ioctl()s. Quote from Andrea, explaining how -EAGAIN was processed, and how this should fix it (taking example of UFFDIO_COPY ioctl): The "mmap_changing" and "stale pmd" conditions are already reported as -EAGAIN written in the copy field, this does not change it. This change removes the subnormal case that left copy.copy uninitialized and required apps to explicitly set the copy field to get deterministic behavior (which is a requirement contrary to the documentation in both the manpage and source code). In turn there's no alteration to backwards compatibility as result of this change because userland will find the copy field consistently set to -EAGAIN, and not anymore sometime -EAGAIN and sometime uninitialized. Even then the change only can make a difference to non cooperative users of userfaultfd, so when UFFD_FEATURE_EVENT_* is enabled, which is not true for the vast majority of apps using userfaultfd or this unintended uninitialized field may have been noticed sooner. Meanwhile, since this bug existed for years, it also almost affects all ioctl()s that was introduced later. Besides UFFDIO_ZEROPAGE, these also get affected in the same way: - UFFDIO_CONTINUE - UFFDIO_POISON - UFFDIO_MOVE This patch should have fixed all of them. Link: https://lkml.kernel.org/r/20250424215729.194656-2-peterx@redhat.com Fixes: df2cc96e7701 ("userfaultfd: prevent non-cooperative events vs mcopy_atomic races") Fixes: f619147104c8 ("userfaultfd: add UFFDIO_CONTINUE ioctl") Fixes: fc71884a5f59 ("mm: userfaultfd: add new UFFDIO_POISON ioctl") Fixes: adef440691ba ("userfaultfd: UFFDIO_MOVE uABI") Signed-off-by: Peter Xu <peterx(a)redhat.com> Reported-by: Andrea Arcangeli <aarcange(a)redhat.com> Suggested-by: Andrea Arcangeli <aarcange(a)redhat.com> Reviewed-by: David Hildenbrand <david(a)redhat.com> Cc: Mike Rapoport <rppt(a)kernel.org> Cc: Axel Rasmussen <axelrasmussen(a)google.com> Cc: Suren Baghdasaryan <surenb(a)google.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org> diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c index d80f94346199..22f4bf956ba1 100644 --- a/fs/userfaultfd.c +++ b/fs/userfaultfd.c @@ -1585,8 +1585,11 @@ static int userfaultfd_copy(struct userfaultfd_ctx *ctx, user_uffdio_copy = (struct uffdio_copy __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_copy->copy))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_copy, user_uffdio_copy, @@ -1641,8 +1644,11 @@ static int userfaultfd_zeropage(struct userfaultfd_ctx *ctx, user_uffdio_zeropage = (struct uffdio_zeropage __user *) arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_zeropage->zeropage))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_zeropage, user_uffdio_zeropage, @@ -1744,8 +1750,11 @@ static int userfaultfd_continue(struct userfaultfd_ctx *ctx, unsigned long arg) user_uffdio_continue = (struct uffdio_continue __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_continue->mapped))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_continue, user_uffdio_continue, @@ -1801,8 +1810,11 @@ static inline int userfaultfd_poison(struct userfaultfd_ctx *ctx, unsigned long user_uffdio_poison = (struct uffdio_poison __user *)arg; ret = -EAGAIN; - if (atomic_read(&ctx->mmap_changing)) + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_poison->updated))) + return -EFAULT; goto out; + } ret = -EFAULT; if (copy_from_user(&uffdio_poison, user_uffdio_poison, @@ -1870,8 +1882,12 @@ static int userfaultfd_move(struct userfaultfd_ctx *ctx, user_uffdio_move = (struct uffdio_move __user *) arg; - if (atomic_read(&ctx->mmap_changing)) - return -EAGAIN; + ret = -EAGAIN; + if (unlikely(atomic_read(&ctx->mmap_changing))) { + if (unlikely(put_user(ret, &user_uffdio_move->move))) + return -EFAULT; + goto out; + } if (copy_from_user(&uffdio_move, user_uffdio_move, /* don't copy "move" last field */

5 months, 4 weeks

1
0
0 0

Re: Patch "s390/entry: Fix last breaking event handling in case of stack corruption" has been added to the 6.6-stable tree

by Heiko Carstens

On Sun, May 11, 2025 at 01:59:02PM -0400, Sasha Levin wrote: > This is a note to let you know that I've just added the patch titled > > s390/entry: Fix last breaking event handling in case of stack corruption > > to the 6.6-stable tree which can be found at: > http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… > > The filename of the patch is: > s390-entry-fix-last-breaking-event-handling-in-case-.patch > and it can be found in the queue-6.6 subdirectory. > > If you, or anyone else, feels it should not be added to the stable tree, > please let <stable(a)vger.kernel.org> know about it. This patch shouldn't be applied as it is to 6.6, 6.1, and 5.15 stable kernels, since it won't compile. I'll provide a slightly modified variant.

5 months, 4 weeks

2
1
0 0

FAILED: patch "[PATCH] staging: axis-fifo: Correct handling of tx_fifo_depth for" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 2ca34b508774aaa590fc3698a54204706ecca4ba # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051209-visible-hassle-6995@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 2ca34b508774aaa590fc3698a54204706ecca4ba Mon Sep 17 00:00:00 2001 From: Gabriel Shahrouzi <gshahrouzi(a)gmail.com> Date: Fri, 18 Apr 2025 21:29:37 -0400 Subject: [PATCH] staging: axis-fifo: Correct handling of tx_fifo_depth for size validation Remove erroneous subtraction of 4 from the total FIFO depth read from device tree. The stored depth is for checking against total capacity, not initial vacancy. This prevented writes near the FIFO's full size. The check performed just before data transfer, which uses live reads of the TDFV register to determine current vacancy, correctly handles the initial Depth - 4 hardware state and subsequent FIFO fullness. Fixes: 4a965c5f89de ("staging: add driver for Xilinx AXI-Stream FIFO v4.1 IP core") Cc: stable(a)vger.kernel.org Signed-off-by: Gabriel Shahrouzi <gshahrouzi(a)gmail.com> Link: https://lore.kernel.org/r/20250419012937.674924-1-gshahrouzi@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c index 7540c20090c7..04b3dc3cfe7c 100644 --- a/drivers/staging/axis-fifo/axis-fifo.c +++ b/drivers/staging/axis-fifo/axis-fifo.c @@ -775,9 +775,6 @@ static int axis_fifo_parse_dt(struct axis_fifo *fifo) goto end; } - /* IP sets TDFV to fifo depth - 4 so we will do the same */ - fifo->tx_fifo_depth -= 4; - ret = get_dts_property(fifo, "xlnx,use-rx-data", &fifo->has_rx_fifo); if (ret) { dev_err(fifo->dt_device, "missing xlnx,use-rx-data property\n");

5 months, 4 weeks

1
0
0 0

FAILED: patch "[PATCH] staging: axis-fifo: Remove hardware resets for user errors" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x c6e8d85fafa7193613db37da29c0e8d6e2515b13 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051251-pardon-stellar-d13f@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From c6e8d85fafa7193613db37da29c0e8d6e2515b13 Mon Sep 17 00:00:00 2001 From: Gabriel Shahrouzi <gshahrouzi(a)gmail.com> Date: Fri, 18 Apr 2025 20:43:06 -0400 Subject: [PATCH] staging: axis-fifo: Remove hardware resets for user errors The axis-fifo driver performs a full hardware reset (via reset_ip_core()) in several error paths within the read and write functions. This reset flushes both TX and RX FIFOs and resets the AXI-Stream links. Allow the user to handle the error without causing hardware disruption or data loss in other FIFO paths. Fixes: 4a965c5f89de ("staging: add driver for Xilinx AXI-Stream FIFO v4.1 IP core") Cc: stable(a)vger.kernel.org Signed-off-by: Gabriel Shahrouzi <gshahrouzi(a)gmail.com> Link: https://lore.kernel.org/r/20250419004306.669605-1-gshahrouzi@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c index 04b3dc3cfe7c..351f983ef914 100644 --- a/drivers/staging/axis-fifo/axis-fifo.c +++ b/drivers/staging/axis-fifo/axis-fifo.c @@ -393,16 +393,14 @@ static ssize_t axis_fifo_read(struct file *f, char __user *buf, bytes_available = ioread32(fifo->base_addr + XLLF_RLR_OFFSET); if (!bytes_available) { - dev_err(fifo->dt_device, "received a packet of length 0 - fifo core will be reset\n"); - reset_ip_core(fifo); + dev_err(fifo->dt_device, "received a packet of length 0\n"); ret = -EIO; goto end_unlock; } if (bytes_available > len) { - dev_err(fifo->dt_device, "user read buffer too small (available bytes=%zu user buffer bytes=%zu) - fifo core will be reset\n", + dev_err(fifo->dt_device, "user read buffer too small (available bytes=%zu user buffer bytes=%zu)\n", bytes_available, len); - reset_ip_core(fifo); ret = -EINVAL; goto end_unlock; } @@ -411,8 +409,7 @@ static ssize_t axis_fifo_read(struct file *f, char __user *buf, /* this probably can't happen unless IP * registers were previously mishandled */ - dev_err(fifo->dt_device, "received a packet that isn't word-aligned - fifo core will be reset\n"); - reset_ip_core(fifo); + dev_err(fifo->dt_device, "received a packet that isn't word-aligned\n"); ret = -EIO; goto end_unlock; } @@ -433,7 +430,6 @@ static ssize_t axis_fifo_read(struct file *f, char __user *buf, if (copy_to_user(buf + copied * sizeof(u32), tmp_buf, copy * sizeof(u32))) { - reset_ip_core(fifo); ret = -EFAULT; goto end_unlock; } @@ -542,7 +538,6 @@ static ssize_t axis_fifo_write(struct file *f, const char __user *buf, if (copy_from_user(tmp_buf, buf + copied * sizeof(u32), copy * sizeof(u32))) { - reset_ip_core(fifo); ret = -EFAULT; goto end_unlock; }

5 months, 4 weeks

1
0
0 0

FAILED: patch "[PATCH] uio_hv_generic: Fix sysfs creation path for ring buffer" failed to apply to 5.4-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x f31fe8165d365379d858c53bef43254c7d6d1cfd # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051213-regretful-conceded-2379@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From f31fe8165d365379d858c53bef43254c7d6d1cfd Mon Sep 17 00:00:00 2001 From: Naman Jain <namjain(a)linux.microsoft.com> Date: Fri, 2 May 2025 13:18:10 +0530 Subject: [PATCH] uio_hv_generic: Fix sysfs creation path for ring buffer On regular bootup, devices get registered to VMBus first, so when uio_hv_generic driver for a particular device type is probed, the device is already initialized and added, so sysfs creation in hv_uio_probe() works fine. However, when the device is removed and brought back, the channel gets rescinded and the device again gets registered to VMBus. However this time, the uio_hv_generic driver is already registered to probe for that device and in this case sysfs creation is tried before the device's kobject gets initialized completely. Fix this by moving the core logic of sysfs creation of ring buffer, from uio_hv_generic to HyperV's VMBus driver, where the rest of the sysfs attributes for the channels are defined. While doing that, make use of attribute groups and macros, instead of creating sysfs directly, to ensure better error handling and code flow. Problematic path: vmbus_process_offer (A new offer comes for the VMBus device) vmbus_add_channel_work vmbus_device_register |-> device_register | |... | |-> hv_uio_probe | |... | |-> sysfs_create_bin_file (leads to a warning as | the primary channel's kobject, which is used to | create the sysfs file, is not yet initialized) |-> kset_create_and_add |-> vmbus_add_channel_kobj (initialization of the primary channel's kobject happens later) Above code flow is sequential and the warning is always reproducible in this path. Fixes: 9ab877a6ccf8 ("uio_hv_generic: make ring buffer attribute for primary channel") Cc: stable(a)kernel.org Suggested-by: Saurabh Sengar <ssengar(a)linux.microsoft.com> Suggested-by: Michael Kelley <mhklinux(a)outlook.com> Reviewed-by: Michael Kelley <mhklinux(a)outlook.com> Tested-by: Michael Kelley <mhklinux(a)outlook.com> Reviewed-by: Dexuan Cui <decui(a)microsoft.com> Signed-off-by: Naman Jain <namjain(a)linux.microsoft.com> Link: https://lore.kernel.org/r/20250502074811.2022-2-namjain@linux.microsoft.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 29780f3a7478..0b450e53161e 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -477,4 +477,10 @@ static inline int hv_debug_add_dev_dir(struct hv_device *dev) #endif /* CONFIG_HYPERV_TESTING */ +/* Create and remove sysfs entry for memory mapped ring buffers for a channel */ +int hv_create_ring_sysfs(struct vmbus_channel *channel, + int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + struct vm_area_struct *vma)); +int hv_remove_ring_sysfs(struct vmbus_channel *channel); + #endif /* _HYPERV_VMBUS_H */ diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 8d3cff42bdbb..0f16a83cc2d6 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1802,6 +1802,27 @@ static ssize_t subchannel_id_show(struct vmbus_channel *channel, } static VMBUS_CHAN_ATTR_RO(subchannel_id); +static int hv_mmap_ring_buffer_wrapper(struct file *filp, struct kobject *kobj, + const struct bin_attribute *attr, + struct vm_area_struct *vma) +{ + struct vmbus_channel *channel = container_of(kobj, struct vmbus_channel, kobj); + + /* + * hv_(create|remove)_ring_sysfs implementation ensures that mmap_ring_buffer + * is not NULL. + */ + return channel->mmap_ring_buffer(channel, vma); +} + +static struct bin_attribute chan_attr_ring_buffer = { + .attr = { + .name = "ring", + .mode = 0600, + }, + .size = 2 * SZ_2M, + .mmap = hv_mmap_ring_buffer_wrapper, +}; static struct attribute *vmbus_chan_attrs[] = { &chan_attr_out_mask.attr, &chan_attr_in_mask.attr, @@ -1821,6 +1842,11 @@ static struct attribute *vmbus_chan_attrs[] = { NULL }; +static struct bin_attribute *vmbus_chan_bin_attrs[] = { + &chan_attr_ring_buffer, + NULL +}; + /* * Channel-level attribute_group callback function. Returns the permission for * each attribute, and returns 0 if an attribute is not visible. @@ -1841,9 +1867,24 @@ static umode_t vmbus_chan_attr_is_visible(struct kobject *kobj, return attr->mode; } +static umode_t vmbus_chan_bin_attr_is_visible(struct kobject *kobj, + const struct bin_attribute *attr, int idx) +{ + const struct vmbus_channel *channel = + container_of(kobj, struct vmbus_channel, kobj); + + /* Hide ring attribute if channel's ring_sysfs_visible is set to false */ + if (attr == &chan_attr_ring_buffer && !channel->ring_sysfs_visible) + return 0; + + return attr->attr.mode; +} + static const struct attribute_group vmbus_chan_group = { .attrs = vmbus_chan_attrs, - .is_visible = vmbus_chan_attr_is_visible + .bin_attrs = vmbus_chan_bin_attrs, + .is_visible = vmbus_chan_attr_is_visible, + .is_bin_visible = vmbus_chan_bin_attr_is_visible, }; static const struct kobj_type vmbus_chan_ktype = { @@ -1851,6 +1892,63 @@ static const struct kobj_type vmbus_chan_ktype = { .release = vmbus_chan_release, }; +/** + * hv_create_ring_sysfs() - create "ring" sysfs entry corresponding to ring buffers for a channel. + * @channel: Pointer to vmbus_channel structure + * @hv_mmap_ring_buffer: function pointer for initializing the function to be called on mmap of + * channel's "ring" sysfs node, which is for the ring buffer of that channel. + * Function pointer is of below type: + * int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + * struct vm_area_struct *vma)) + * This has a pointer to the channel and a pointer to vm_area_struct, + * used for mmap, as arguments. + * + * Sysfs node for ring buffer of a channel is created along with other fields, however its + * visibility is disabled by default. Sysfs creation needs to be controlled when the use-case + * is running. + * For example, HV_NIC device is used either by uio_hv_generic or hv_netvsc at any given point of + * time, and "ring" sysfs is needed only when uio_hv_generic is bound to that device. To avoid + * exposing the ring buffer by default, this function is reponsible to enable visibility of + * ring for userspace to use. + * Note: Race conditions can happen with userspace and it is not encouraged to create new + * use-cases for this. This was added to maintain backward compatibility, while solving + * one of the race conditions in uio_hv_generic while creating sysfs. + * + * Returns 0 on success or error code on failure. + */ +int hv_create_ring_sysfs(struct vmbus_channel *channel, + int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + struct vm_area_struct *vma)) +{ + struct kobject *kobj = &channel->kobj; + + channel->mmap_ring_buffer = hv_mmap_ring_buffer; + channel->ring_sysfs_visible = true; + + return sysfs_update_group(kobj, &vmbus_chan_group); +} +EXPORT_SYMBOL_GPL(hv_create_ring_sysfs); + +/** + * hv_remove_ring_sysfs() - remove ring sysfs entry corresponding to ring buffers for a channel. + * @channel: Pointer to vmbus_channel structure + * + * Hide "ring" sysfs for a channel by changing its is_visible attribute and updating sysfs group. + * + * Returns 0 on success or error code on failure. + */ +int hv_remove_ring_sysfs(struct vmbus_channel *channel) +{ + struct kobject *kobj = &channel->kobj; + int ret; + + channel->ring_sysfs_visible = false; + ret = sysfs_update_group(kobj, &vmbus_chan_group); + channel->mmap_ring_buffer = NULL; + return ret; +} +EXPORT_SYMBOL_GPL(hv_remove_ring_sysfs); + /* * vmbus_add_channel_kobj - setup a sub-directory under device/channels */ diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index 1b19b5647495..69c1df0f4ca5 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -131,15 +131,12 @@ static void hv_uio_rescind(struct vmbus_channel *channel) vmbus_device_unregister(channel->device_obj); } -/* Sysfs API to allow mmap of the ring buffers +/* Function used for mmap of ring buffer sysfs interface. * The ring buffer is allocated as contiguous memory by vmbus_open */ -static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, - const struct bin_attribute *attr, - struct vm_area_struct *vma) +static int +hv_uio_ring_mmap(struct vmbus_channel *channel, struct vm_area_struct *vma) { - struct vmbus_channel *channel - = container_of(kobj, struct vmbus_channel, kobj); void *ring_buffer = page_address(channel->ringbuffer_page); if (channel->state != CHANNEL_OPENED_STATE) @@ -149,15 +146,6 @@ static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, channel->ringbuffer_pagecount << PAGE_SHIFT); } -static const struct bin_attribute ring_buffer_bin_attr = { - .attr = { - .name = "ring", - .mode = 0600, - }, - .size = 2 * SZ_2M, - .mmap = hv_uio_ring_mmap, -}; - /* Callback from VMBUS subsystem when new channel created. */ static void hv_uio_new_channel(struct vmbus_channel *new_sc) @@ -178,8 +166,7 @@ hv_uio_new_channel(struct vmbus_channel *new_sc) /* Disable interrupts on sub channel */ new_sc->inbound.ring_buffer->interrupt_mask = 1; set_channel_read_mode(new_sc, HV_CALL_ISR); - - ret = sysfs_create_bin_file(&new_sc->kobj, &ring_buffer_bin_attr); + ret = hv_create_ring_sysfs(new_sc, hv_uio_ring_mmap); if (ret) { dev_err(device, "sysfs create ring bin file failed; %d\n", ret); vmbus_close(new_sc); @@ -350,10 +337,18 @@ hv_uio_probe(struct hv_device *dev, goto fail_close; } - ret = sysfs_create_bin_file(&channel->kobj, &ring_buffer_bin_attr); - if (ret) - dev_notice(&dev->device, - "sysfs create ring bin file failed; %d\n", ret); + /* + * This internally calls sysfs_update_group, which returns a non-zero value if it executes + * before sysfs_create_group. This is expected as the 'ring' will be created later in + * vmbus_device_register() -> vmbus_add_channel_kobj(). Thus, no need to check the return + * value and print warning. + * + * Creating/exposing sysfs in driver probe is not encouraged as it can lead to race + * conditions with userspace. For backward compatibility, "ring" sysfs could not be removed + * or decoupled from uio_hv_generic probe. Userspace programs can make use of inotify + * APIs to make sure that ring is created. + */ + hv_create_ring_sysfs(channel, hv_uio_ring_mmap); hv_set_drvdata(dev, pdata); @@ -375,7 +370,7 @@ hv_uio_remove(struct hv_device *dev) if (!pdata) return; - sysfs_remove_bin_file(&dev->channel->kobj, &ring_buffer_bin_attr); + hv_remove_ring_sysfs(dev->channel); uio_unregister_device(&pdata->info); hv_uio_cleanup(dev, pdata); diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 675959fb97ba..d6ffe01962c2 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1002,6 +1002,12 @@ struct vmbus_channel { /* The max size of a packet on this channel */ u32 max_pkt_size; + + /* function to mmap ring buffer memory to the channel's sysfs ring attribute */ + int (*mmap_ring_buffer)(struct vmbus_channel *channel, struct vm_area_struct *vma); + + /* boolean to control visibility of sysfs for ring buffer */ + bool ring_sysfs_visible; }; #define lock_requestor(channel, flags) \

5 months, 4 weeks

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FAILED: patch "[PATCH] uio_hv_generic: Fix sysfs creation path for ring buffer" failed to apply to 5.10-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.10.y git checkout FETCH_HEAD git cherry-pick -x f31fe8165d365379d858c53bef43254c7d6d1cfd # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051212-blah-famine-0e8e@gregkh' --subject-prefix 'PATCH 5.10.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From f31fe8165d365379d858c53bef43254c7d6d1cfd Mon Sep 17 00:00:00 2001 From: Naman Jain <namjain(a)linux.microsoft.com> Date: Fri, 2 May 2025 13:18:10 +0530 Subject: [PATCH] uio_hv_generic: Fix sysfs creation path for ring buffer On regular bootup, devices get registered to VMBus first, so when uio_hv_generic driver for a particular device type is probed, the device is already initialized and added, so sysfs creation in hv_uio_probe() works fine. However, when the device is removed and brought back, the channel gets rescinded and the device again gets registered to VMBus. However this time, the uio_hv_generic driver is already registered to probe for that device and in this case sysfs creation is tried before the device's kobject gets initialized completely. Fix this by moving the core logic of sysfs creation of ring buffer, from uio_hv_generic to HyperV's VMBus driver, where the rest of the sysfs attributes for the channels are defined. While doing that, make use of attribute groups and macros, instead of creating sysfs directly, to ensure better error handling and code flow. Problematic path: vmbus_process_offer (A new offer comes for the VMBus device) vmbus_add_channel_work vmbus_device_register |-> device_register | |... | |-> hv_uio_probe | |... | |-> sysfs_create_bin_file (leads to a warning as | the primary channel's kobject, which is used to | create the sysfs file, is not yet initialized) |-> kset_create_and_add |-> vmbus_add_channel_kobj (initialization of the primary channel's kobject happens later) Above code flow is sequential and the warning is always reproducible in this path. Fixes: 9ab877a6ccf8 ("uio_hv_generic: make ring buffer attribute for primary channel") Cc: stable(a)kernel.org Suggested-by: Saurabh Sengar <ssengar(a)linux.microsoft.com> Suggested-by: Michael Kelley <mhklinux(a)outlook.com> Reviewed-by: Michael Kelley <mhklinux(a)outlook.com> Tested-by: Michael Kelley <mhklinux(a)outlook.com> Reviewed-by: Dexuan Cui <decui(a)microsoft.com> Signed-off-by: Naman Jain <namjain(a)linux.microsoft.com> Link: https://lore.kernel.org/r/20250502074811.2022-2-namjain@linux.microsoft.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 29780f3a7478..0b450e53161e 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -477,4 +477,10 @@ static inline int hv_debug_add_dev_dir(struct hv_device *dev) #endif /* CONFIG_HYPERV_TESTING */ +/* Create and remove sysfs entry for memory mapped ring buffers for a channel */ +int hv_create_ring_sysfs(struct vmbus_channel *channel, + int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + struct vm_area_struct *vma)); +int hv_remove_ring_sysfs(struct vmbus_channel *channel); + #endif /* _HYPERV_VMBUS_H */ diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 8d3cff42bdbb..0f16a83cc2d6 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1802,6 +1802,27 @@ static ssize_t subchannel_id_show(struct vmbus_channel *channel, } static VMBUS_CHAN_ATTR_RO(subchannel_id); +static int hv_mmap_ring_buffer_wrapper(struct file *filp, struct kobject *kobj, + const struct bin_attribute *attr, + struct vm_area_struct *vma) +{ + struct vmbus_channel *channel = container_of(kobj, struct vmbus_channel, kobj); + + /* + * hv_(create|remove)_ring_sysfs implementation ensures that mmap_ring_buffer + * is not NULL. + */ + return channel->mmap_ring_buffer(channel, vma); +} + +static struct bin_attribute chan_attr_ring_buffer = { + .attr = { + .name = "ring", + .mode = 0600, + }, + .size = 2 * SZ_2M, + .mmap = hv_mmap_ring_buffer_wrapper, +}; static struct attribute *vmbus_chan_attrs[] = { &chan_attr_out_mask.attr, &chan_attr_in_mask.attr, @@ -1821,6 +1842,11 @@ static struct attribute *vmbus_chan_attrs[] = { NULL }; +static struct bin_attribute *vmbus_chan_bin_attrs[] = { + &chan_attr_ring_buffer, + NULL +}; + /* * Channel-level attribute_group callback function. Returns the permission for * each attribute, and returns 0 if an attribute is not visible. @@ -1841,9 +1867,24 @@ static umode_t vmbus_chan_attr_is_visible(struct kobject *kobj, return attr->mode; } +static umode_t vmbus_chan_bin_attr_is_visible(struct kobject *kobj, + const struct bin_attribute *attr, int idx) +{ + const struct vmbus_channel *channel = + container_of(kobj, struct vmbus_channel, kobj); + + /* Hide ring attribute if channel's ring_sysfs_visible is set to false */ + if (attr == &chan_attr_ring_buffer && !channel->ring_sysfs_visible) + return 0; + + return attr->attr.mode; +} + static const struct attribute_group vmbus_chan_group = { .attrs = vmbus_chan_attrs, - .is_visible = vmbus_chan_attr_is_visible + .bin_attrs = vmbus_chan_bin_attrs, + .is_visible = vmbus_chan_attr_is_visible, + .is_bin_visible = vmbus_chan_bin_attr_is_visible, }; static const struct kobj_type vmbus_chan_ktype = { @@ -1851,6 +1892,63 @@ static const struct kobj_type vmbus_chan_ktype = { .release = vmbus_chan_release, }; +/** + * hv_create_ring_sysfs() - create "ring" sysfs entry corresponding to ring buffers for a channel. + * @channel: Pointer to vmbus_channel structure + * @hv_mmap_ring_buffer: function pointer for initializing the function to be called on mmap of + * channel's "ring" sysfs node, which is for the ring buffer of that channel. + * Function pointer is of below type: + * int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + * struct vm_area_struct *vma)) + * This has a pointer to the channel and a pointer to vm_area_struct, + * used for mmap, as arguments. + * + * Sysfs node for ring buffer of a channel is created along with other fields, however its + * visibility is disabled by default. Sysfs creation needs to be controlled when the use-case + * is running. + * For example, HV_NIC device is used either by uio_hv_generic or hv_netvsc at any given point of + * time, and "ring" sysfs is needed only when uio_hv_generic is bound to that device. To avoid + * exposing the ring buffer by default, this function is reponsible to enable visibility of + * ring for userspace to use. + * Note: Race conditions can happen with userspace and it is not encouraged to create new + * use-cases for this. This was added to maintain backward compatibility, while solving + * one of the race conditions in uio_hv_generic while creating sysfs. + * + * Returns 0 on success or error code on failure. + */ +int hv_create_ring_sysfs(struct vmbus_channel *channel, + int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + struct vm_area_struct *vma)) +{ + struct kobject *kobj = &channel->kobj; + + channel->mmap_ring_buffer = hv_mmap_ring_buffer; + channel->ring_sysfs_visible = true; + + return sysfs_update_group(kobj, &vmbus_chan_group); +} +EXPORT_SYMBOL_GPL(hv_create_ring_sysfs); + +/** + * hv_remove_ring_sysfs() - remove ring sysfs entry corresponding to ring buffers for a channel. + * @channel: Pointer to vmbus_channel structure + * + * Hide "ring" sysfs for a channel by changing its is_visible attribute and updating sysfs group. + * + * Returns 0 on success or error code on failure. + */ +int hv_remove_ring_sysfs(struct vmbus_channel *channel) +{ + struct kobject *kobj = &channel->kobj; + int ret; + + channel->ring_sysfs_visible = false; + ret = sysfs_update_group(kobj, &vmbus_chan_group); + channel->mmap_ring_buffer = NULL; + return ret; +} +EXPORT_SYMBOL_GPL(hv_remove_ring_sysfs); + /* * vmbus_add_channel_kobj - setup a sub-directory under device/channels */ diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index 1b19b5647495..69c1df0f4ca5 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -131,15 +131,12 @@ static void hv_uio_rescind(struct vmbus_channel *channel) vmbus_device_unregister(channel->device_obj); } -/* Sysfs API to allow mmap of the ring buffers +/* Function used for mmap of ring buffer sysfs interface. * The ring buffer is allocated as contiguous memory by vmbus_open */ -static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, - const struct bin_attribute *attr, - struct vm_area_struct *vma) +static int +hv_uio_ring_mmap(struct vmbus_channel *channel, struct vm_area_struct *vma) { - struct vmbus_channel *channel - = container_of(kobj, struct vmbus_channel, kobj); void *ring_buffer = page_address(channel->ringbuffer_page); if (channel->state != CHANNEL_OPENED_STATE) @@ -149,15 +146,6 @@ static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, channel->ringbuffer_pagecount << PAGE_SHIFT); } -static const struct bin_attribute ring_buffer_bin_attr = { - .attr = { - .name = "ring", - .mode = 0600, - }, - .size = 2 * SZ_2M, - .mmap = hv_uio_ring_mmap, -}; - /* Callback from VMBUS subsystem when new channel created. */ static void hv_uio_new_channel(struct vmbus_channel *new_sc) @@ -178,8 +166,7 @@ hv_uio_new_channel(struct vmbus_channel *new_sc) /* Disable interrupts on sub channel */ new_sc->inbound.ring_buffer->interrupt_mask = 1; set_channel_read_mode(new_sc, HV_CALL_ISR); - - ret = sysfs_create_bin_file(&new_sc->kobj, &ring_buffer_bin_attr); + ret = hv_create_ring_sysfs(new_sc, hv_uio_ring_mmap); if (ret) { dev_err(device, "sysfs create ring bin file failed; %d\n", ret); vmbus_close(new_sc); @@ -350,10 +337,18 @@ hv_uio_probe(struct hv_device *dev, goto fail_close; } - ret = sysfs_create_bin_file(&channel->kobj, &ring_buffer_bin_attr); - if (ret) - dev_notice(&dev->device, - "sysfs create ring bin file failed; %d\n", ret); + /* + * This internally calls sysfs_update_group, which returns a non-zero value if it executes + * before sysfs_create_group. This is expected as the 'ring' will be created later in + * vmbus_device_register() -> vmbus_add_channel_kobj(). Thus, no need to check the return + * value and print warning. + * + * Creating/exposing sysfs in driver probe is not encouraged as it can lead to race + * conditions with userspace. For backward compatibility, "ring" sysfs could not be removed + * or decoupled from uio_hv_generic probe. Userspace programs can make use of inotify + * APIs to make sure that ring is created. + */ + hv_create_ring_sysfs(channel, hv_uio_ring_mmap); hv_set_drvdata(dev, pdata); @@ -375,7 +370,7 @@ hv_uio_remove(struct hv_device *dev) if (!pdata) return; - sysfs_remove_bin_file(&dev->channel->kobj, &ring_buffer_bin_attr); + hv_remove_ring_sysfs(dev->channel); uio_unregister_device(&pdata->info); hv_uio_cleanup(dev, pdata); diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 675959fb97ba..d6ffe01962c2 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1002,6 +1002,12 @@ struct vmbus_channel { /* The max size of a packet on this channel */ u32 max_pkt_size; + + /* function to mmap ring buffer memory to the channel's sysfs ring attribute */ + int (*mmap_ring_buffer)(struct vmbus_channel *channel, struct vm_area_struct *vma); + + /* boolean to control visibility of sysfs for ring buffer */ + bool ring_sysfs_visible; }; #define lock_requestor(channel, flags) \

5 months, 4 weeks

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FAILED: patch "[PATCH] uio_hv_generic: Fix sysfs creation path for ring buffer" failed to apply to 5.15-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x f31fe8165d365379d858c53bef43254c7d6d1cfd # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051211-renewably-acclimate-72f0@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From f31fe8165d365379d858c53bef43254c7d6d1cfd Mon Sep 17 00:00:00 2001 From: Naman Jain <namjain(a)linux.microsoft.com> Date: Fri, 2 May 2025 13:18:10 +0530 Subject: [PATCH] uio_hv_generic: Fix sysfs creation path for ring buffer On regular bootup, devices get registered to VMBus first, so when uio_hv_generic driver for a particular device type is probed, the device is already initialized and added, so sysfs creation in hv_uio_probe() works fine. However, when the device is removed and brought back, the channel gets rescinded and the device again gets registered to VMBus. However this time, the uio_hv_generic driver is already registered to probe for that device and in this case sysfs creation is tried before the device's kobject gets initialized completely. Fix this by moving the core logic of sysfs creation of ring buffer, from uio_hv_generic to HyperV's VMBus driver, where the rest of the sysfs attributes for the channels are defined. While doing that, make use of attribute groups and macros, instead of creating sysfs directly, to ensure better error handling and code flow. Problematic path: vmbus_process_offer (A new offer comes for the VMBus device) vmbus_add_channel_work vmbus_device_register |-> device_register | |... | |-> hv_uio_probe | |... | |-> sysfs_create_bin_file (leads to a warning as | the primary channel's kobject, which is used to | create the sysfs file, is not yet initialized) |-> kset_create_and_add |-> vmbus_add_channel_kobj (initialization of the primary channel's kobject happens later) Above code flow is sequential and the warning is always reproducible in this path. Fixes: 9ab877a6ccf8 ("uio_hv_generic: make ring buffer attribute for primary channel") Cc: stable(a)kernel.org Suggested-by: Saurabh Sengar <ssengar(a)linux.microsoft.com> Suggested-by: Michael Kelley <mhklinux(a)outlook.com> Reviewed-by: Michael Kelley <mhklinux(a)outlook.com> Tested-by: Michael Kelley <mhklinux(a)outlook.com> Reviewed-by: Dexuan Cui <decui(a)microsoft.com> Signed-off-by: Naman Jain <namjain(a)linux.microsoft.com> Link: https://lore.kernel.org/r/20250502074811.2022-2-namjain@linux.microsoft.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 29780f3a7478..0b450e53161e 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -477,4 +477,10 @@ static inline int hv_debug_add_dev_dir(struct hv_device *dev) #endif /* CONFIG_HYPERV_TESTING */ +/* Create and remove sysfs entry for memory mapped ring buffers for a channel */ +int hv_create_ring_sysfs(struct vmbus_channel *channel, + int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + struct vm_area_struct *vma)); +int hv_remove_ring_sysfs(struct vmbus_channel *channel); + #endif /* _HYPERV_VMBUS_H */ diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 8d3cff42bdbb..0f16a83cc2d6 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1802,6 +1802,27 @@ static ssize_t subchannel_id_show(struct vmbus_channel *channel, } static VMBUS_CHAN_ATTR_RO(subchannel_id); +static int hv_mmap_ring_buffer_wrapper(struct file *filp, struct kobject *kobj, + const struct bin_attribute *attr, + struct vm_area_struct *vma) +{ + struct vmbus_channel *channel = container_of(kobj, struct vmbus_channel, kobj); + + /* + * hv_(create|remove)_ring_sysfs implementation ensures that mmap_ring_buffer + * is not NULL. + */ + return channel->mmap_ring_buffer(channel, vma); +} + +static struct bin_attribute chan_attr_ring_buffer = { + .attr = { + .name = "ring", + .mode = 0600, + }, + .size = 2 * SZ_2M, + .mmap = hv_mmap_ring_buffer_wrapper, +}; static struct attribute *vmbus_chan_attrs[] = { &chan_attr_out_mask.attr, &chan_attr_in_mask.attr, @@ -1821,6 +1842,11 @@ static struct attribute *vmbus_chan_attrs[] = { NULL }; +static struct bin_attribute *vmbus_chan_bin_attrs[] = { + &chan_attr_ring_buffer, + NULL +}; + /* * Channel-level attribute_group callback function. Returns the permission for * each attribute, and returns 0 if an attribute is not visible. @@ -1841,9 +1867,24 @@ static umode_t vmbus_chan_attr_is_visible(struct kobject *kobj, return attr->mode; } +static umode_t vmbus_chan_bin_attr_is_visible(struct kobject *kobj, + const struct bin_attribute *attr, int idx) +{ + const struct vmbus_channel *channel = + container_of(kobj, struct vmbus_channel, kobj); + + /* Hide ring attribute if channel's ring_sysfs_visible is set to false */ + if (attr == &chan_attr_ring_buffer && !channel->ring_sysfs_visible) + return 0; + + return attr->attr.mode; +} + static const struct attribute_group vmbus_chan_group = { .attrs = vmbus_chan_attrs, - .is_visible = vmbus_chan_attr_is_visible + .bin_attrs = vmbus_chan_bin_attrs, + .is_visible = vmbus_chan_attr_is_visible, + .is_bin_visible = vmbus_chan_bin_attr_is_visible, }; static const struct kobj_type vmbus_chan_ktype = { @@ -1851,6 +1892,63 @@ static const struct kobj_type vmbus_chan_ktype = { .release = vmbus_chan_release, }; +/** + * hv_create_ring_sysfs() - create "ring" sysfs entry corresponding to ring buffers for a channel. + * @channel: Pointer to vmbus_channel structure + * @hv_mmap_ring_buffer: function pointer for initializing the function to be called on mmap of + * channel's "ring" sysfs node, which is for the ring buffer of that channel. + * Function pointer is of below type: + * int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + * struct vm_area_struct *vma)) + * This has a pointer to the channel and a pointer to vm_area_struct, + * used for mmap, as arguments. + * + * Sysfs node for ring buffer of a channel is created along with other fields, however its + * visibility is disabled by default. Sysfs creation needs to be controlled when the use-case + * is running. + * For example, HV_NIC device is used either by uio_hv_generic or hv_netvsc at any given point of + * time, and "ring" sysfs is needed only when uio_hv_generic is bound to that device. To avoid + * exposing the ring buffer by default, this function is reponsible to enable visibility of + * ring for userspace to use. + * Note: Race conditions can happen with userspace and it is not encouraged to create new + * use-cases for this. This was added to maintain backward compatibility, while solving + * one of the race conditions in uio_hv_generic while creating sysfs. + * + * Returns 0 on success or error code on failure. + */ +int hv_create_ring_sysfs(struct vmbus_channel *channel, + int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + struct vm_area_struct *vma)) +{ + struct kobject *kobj = &channel->kobj; + + channel->mmap_ring_buffer = hv_mmap_ring_buffer; + channel->ring_sysfs_visible = true; + + return sysfs_update_group(kobj, &vmbus_chan_group); +} +EXPORT_SYMBOL_GPL(hv_create_ring_sysfs); + +/** + * hv_remove_ring_sysfs() - remove ring sysfs entry corresponding to ring buffers for a channel. + * @channel: Pointer to vmbus_channel structure + * + * Hide "ring" sysfs for a channel by changing its is_visible attribute and updating sysfs group. + * + * Returns 0 on success or error code on failure. + */ +int hv_remove_ring_sysfs(struct vmbus_channel *channel) +{ + struct kobject *kobj = &channel->kobj; + int ret; + + channel->ring_sysfs_visible = false; + ret = sysfs_update_group(kobj, &vmbus_chan_group); + channel->mmap_ring_buffer = NULL; + return ret; +} +EXPORT_SYMBOL_GPL(hv_remove_ring_sysfs); + /* * vmbus_add_channel_kobj - setup a sub-directory under device/channels */ diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index 1b19b5647495..69c1df0f4ca5 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -131,15 +131,12 @@ static void hv_uio_rescind(struct vmbus_channel *channel) vmbus_device_unregister(channel->device_obj); } -/* Sysfs API to allow mmap of the ring buffers +/* Function used for mmap of ring buffer sysfs interface. * The ring buffer is allocated as contiguous memory by vmbus_open */ -static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, - const struct bin_attribute *attr, - struct vm_area_struct *vma) +static int +hv_uio_ring_mmap(struct vmbus_channel *channel, struct vm_area_struct *vma) { - struct vmbus_channel *channel - = container_of(kobj, struct vmbus_channel, kobj); void *ring_buffer = page_address(channel->ringbuffer_page); if (channel->state != CHANNEL_OPENED_STATE) @@ -149,15 +146,6 @@ static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, channel->ringbuffer_pagecount << PAGE_SHIFT); } -static const struct bin_attribute ring_buffer_bin_attr = { - .attr = { - .name = "ring", - .mode = 0600, - }, - .size = 2 * SZ_2M, - .mmap = hv_uio_ring_mmap, -}; - /* Callback from VMBUS subsystem when new channel created. */ static void hv_uio_new_channel(struct vmbus_channel *new_sc) @@ -178,8 +166,7 @@ hv_uio_new_channel(struct vmbus_channel *new_sc) /* Disable interrupts on sub channel */ new_sc->inbound.ring_buffer->interrupt_mask = 1; set_channel_read_mode(new_sc, HV_CALL_ISR); - - ret = sysfs_create_bin_file(&new_sc->kobj, &ring_buffer_bin_attr); + ret = hv_create_ring_sysfs(new_sc, hv_uio_ring_mmap); if (ret) { dev_err(device, "sysfs create ring bin file failed; %d\n", ret); vmbus_close(new_sc); @@ -350,10 +337,18 @@ hv_uio_probe(struct hv_device *dev, goto fail_close; } - ret = sysfs_create_bin_file(&channel->kobj, &ring_buffer_bin_attr); - if (ret) - dev_notice(&dev->device, - "sysfs create ring bin file failed; %d\n", ret); + /* + * This internally calls sysfs_update_group, which returns a non-zero value if it executes + * before sysfs_create_group. This is expected as the 'ring' will be created later in + * vmbus_device_register() -> vmbus_add_channel_kobj(). Thus, no need to check the return + * value and print warning. + * + * Creating/exposing sysfs in driver probe is not encouraged as it can lead to race + * conditions with userspace. For backward compatibility, "ring" sysfs could not be removed + * or decoupled from uio_hv_generic probe. Userspace programs can make use of inotify + * APIs to make sure that ring is created. + */ + hv_create_ring_sysfs(channel, hv_uio_ring_mmap); hv_set_drvdata(dev, pdata); @@ -375,7 +370,7 @@ hv_uio_remove(struct hv_device *dev) if (!pdata) return; - sysfs_remove_bin_file(&dev->channel->kobj, &ring_buffer_bin_attr); + hv_remove_ring_sysfs(dev->channel); uio_unregister_device(&pdata->info); hv_uio_cleanup(dev, pdata); diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 675959fb97ba..d6ffe01962c2 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1002,6 +1002,12 @@ struct vmbus_channel { /* The max size of a packet on this channel */ u32 max_pkt_size; + + /* function to mmap ring buffer memory to the channel's sysfs ring attribute */ + int (*mmap_ring_buffer)(struct vmbus_channel *channel, struct vm_area_struct *vma); + + /* boolean to control visibility of sysfs for ring buffer */ + bool ring_sysfs_visible; }; #define lock_requestor(channel, flags) \

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FAILED: patch "[PATCH] uio_hv_generic: Fix sysfs creation path for ring buffer" failed to apply to 6.1-stable tree

by gregkh＠linuxfoundation.org

The patch below does not apply to the 6.1-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable(a)vger.kernel.org>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.1.y git checkout FETCH_HEAD git cherry-pick -x f31fe8165d365379d858c53bef43254c7d6d1cfd # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025051210-wieldable-haunt-9fa2@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From f31fe8165d365379d858c53bef43254c7d6d1cfd Mon Sep 17 00:00:00 2001 From: Naman Jain <namjain(a)linux.microsoft.com> Date: Fri, 2 May 2025 13:18:10 +0530 Subject: [PATCH] uio_hv_generic: Fix sysfs creation path for ring buffer On regular bootup, devices get registered to VMBus first, so when uio_hv_generic driver for a particular device type is probed, the device is already initialized and added, so sysfs creation in hv_uio_probe() works fine. However, when the device is removed and brought back, the channel gets rescinded and the device again gets registered to VMBus. However this time, the uio_hv_generic driver is already registered to probe for that device and in this case sysfs creation is tried before the device's kobject gets initialized completely. Fix this by moving the core logic of sysfs creation of ring buffer, from uio_hv_generic to HyperV's VMBus driver, where the rest of the sysfs attributes for the channels are defined. While doing that, make use of attribute groups and macros, instead of creating sysfs directly, to ensure better error handling and code flow. Problematic path: vmbus_process_offer (A new offer comes for the VMBus device) vmbus_add_channel_work vmbus_device_register |-> device_register | |... | |-> hv_uio_probe | |... | |-> sysfs_create_bin_file (leads to a warning as | the primary channel's kobject, which is used to | create the sysfs file, is not yet initialized) |-> kset_create_and_add |-> vmbus_add_channel_kobj (initialization of the primary channel's kobject happens later) Above code flow is sequential and the warning is always reproducible in this path. Fixes: 9ab877a6ccf8 ("uio_hv_generic: make ring buffer attribute for primary channel") Cc: stable(a)kernel.org Suggested-by: Saurabh Sengar <ssengar(a)linux.microsoft.com> Suggested-by: Michael Kelley <mhklinux(a)outlook.com> Reviewed-by: Michael Kelley <mhklinux(a)outlook.com> Tested-by: Michael Kelley <mhklinux(a)outlook.com> Reviewed-by: Dexuan Cui <decui(a)microsoft.com> Signed-off-by: Naman Jain <namjain(a)linux.microsoft.com> Link: https://lore.kernel.org/r/20250502074811.2022-2-namjain@linux.microsoft.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h index 29780f3a7478..0b450e53161e 100644 --- a/drivers/hv/hyperv_vmbus.h +++ b/drivers/hv/hyperv_vmbus.h @@ -477,4 +477,10 @@ static inline int hv_debug_add_dev_dir(struct hv_device *dev) #endif /* CONFIG_HYPERV_TESTING */ +/* Create and remove sysfs entry for memory mapped ring buffers for a channel */ +int hv_create_ring_sysfs(struct vmbus_channel *channel, + int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + struct vm_area_struct *vma)); +int hv_remove_ring_sysfs(struct vmbus_channel *channel); + #endif /* _HYPERV_VMBUS_H */ diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c index 8d3cff42bdbb..0f16a83cc2d6 100644 --- a/drivers/hv/vmbus_drv.c +++ b/drivers/hv/vmbus_drv.c @@ -1802,6 +1802,27 @@ static ssize_t subchannel_id_show(struct vmbus_channel *channel, } static VMBUS_CHAN_ATTR_RO(subchannel_id); +static int hv_mmap_ring_buffer_wrapper(struct file *filp, struct kobject *kobj, + const struct bin_attribute *attr, + struct vm_area_struct *vma) +{ + struct vmbus_channel *channel = container_of(kobj, struct vmbus_channel, kobj); + + /* + * hv_(create|remove)_ring_sysfs implementation ensures that mmap_ring_buffer + * is not NULL. + */ + return channel->mmap_ring_buffer(channel, vma); +} + +static struct bin_attribute chan_attr_ring_buffer = { + .attr = { + .name = "ring", + .mode = 0600, + }, + .size = 2 * SZ_2M, + .mmap = hv_mmap_ring_buffer_wrapper, +}; static struct attribute *vmbus_chan_attrs[] = { &chan_attr_out_mask.attr, &chan_attr_in_mask.attr, @@ -1821,6 +1842,11 @@ static struct attribute *vmbus_chan_attrs[] = { NULL }; +static struct bin_attribute *vmbus_chan_bin_attrs[] = { + &chan_attr_ring_buffer, + NULL +}; + /* * Channel-level attribute_group callback function. Returns the permission for * each attribute, and returns 0 if an attribute is not visible. @@ -1841,9 +1867,24 @@ static umode_t vmbus_chan_attr_is_visible(struct kobject *kobj, return attr->mode; } +static umode_t vmbus_chan_bin_attr_is_visible(struct kobject *kobj, + const struct bin_attribute *attr, int idx) +{ + const struct vmbus_channel *channel = + container_of(kobj, struct vmbus_channel, kobj); + + /* Hide ring attribute if channel's ring_sysfs_visible is set to false */ + if (attr == &chan_attr_ring_buffer && !channel->ring_sysfs_visible) + return 0; + + return attr->attr.mode; +} + static const struct attribute_group vmbus_chan_group = { .attrs = vmbus_chan_attrs, - .is_visible = vmbus_chan_attr_is_visible + .bin_attrs = vmbus_chan_bin_attrs, + .is_visible = vmbus_chan_attr_is_visible, + .is_bin_visible = vmbus_chan_bin_attr_is_visible, }; static const struct kobj_type vmbus_chan_ktype = { @@ -1851,6 +1892,63 @@ static const struct kobj_type vmbus_chan_ktype = { .release = vmbus_chan_release, }; +/** + * hv_create_ring_sysfs() - create "ring" sysfs entry corresponding to ring buffers for a channel. + * @channel: Pointer to vmbus_channel structure + * @hv_mmap_ring_buffer: function pointer for initializing the function to be called on mmap of + * channel's "ring" sysfs node, which is for the ring buffer of that channel. + * Function pointer is of below type: + * int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + * struct vm_area_struct *vma)) + * This has a pointer to the channel and a pointer to vm_area_struct, + * used for mmap, as arguments. + * + * Sysfs node for ring buffer of a channel is created along with other fields, however its + * visibility is disabled by default. Sysfs creation needs to be controlled when the use-case + * is running. + * For example, HV_NIC device is used either by uio_hv_generic or hv_netvsc at any given point of + * time, and "ring" sysfs is needed only when uio_hv_generic is bound to that device. To avoid + * exposing the ring buffer by default, this function is reponsible to enable visibility of + * ring for userspace to use. + * Note: Race conditions can happen with userspace and it is not encouraged to create new + * use-cases for this. This was added to maintain backward compatibility, while solving + * one of the race conditions in uio_hv_generic while creating sysfs. + * + * Returns 0 on success or error code on failure. + */ +int hv_create_ring_sysfs(struct vmbus_channel *channel, + int (*hv_mmap_ring_buffer)(struct vmbus_channel *channel, + struct vm_area_struct *vma)) +{ + struct kobject *kobj = &channel->kobj; + + channel->mmap_ring_buffer = hv_mmap_ring_buffer; + channel->ring_sysfs_visible = true; + + return sysfs_update_group(kobj, &vmbus_chan_group); +} +EXPORT_SYMBOL_GPL(hv_create_ring_sysfs); + +/** + * hv_remove_ring_sysfs() - remove ring sysfs entry corresponding to ring buffers for a channel. + * @channel: Pointer to vmbus_channel structure + * + * Hide "ring" sysfs for a channel by changing its is_visible attribute and updating sysfs group. + * + * Returns 0 on success or error code on failure. + */ +int hv_remove_ring_sysfs(struct vmbus_channel *channel) +{ + struct kobject *kobj = &channel->kobj; + int ret; + + channel->ring_sysfs_visible = false; + ret = sysfs_update_group(kobj, &vmbus_chan_group); + channel->mmap_ring_buffer = NULL; + return ret; +} +EXPORT_SYMBOL_GPL(hv_remove_ring_sysfs); + /* * vmbus_add_channel_kobj - setup a sub-directory under device/channels */ diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index 1b19b5647495..69c1df0f4ca5 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -131,15 +131,12 @@ static void hv_uio_rescind(struct vmbus_channel *channel) vmbus_device_unregister(channel->device_obj); } -/* Sysfs API to allow mmap of the ring buffers +/* Function used for mmap of ring buffer sysfs interface. * The ring buffer is allocated as contiguous memory by vmbus_open */ -static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, - const struct bin_attribute *attr, - struct vm_area_struct *vma) +static int +hv_uio_ring_mmap(struct vmbus_channel *channel, struct vm_area_struct *vma) { - struct vmbus_channel *channel - = container_of(kobj, struct vmbus_channel, kobj); void *ring_buffer = page_address(channel->ringbuffer_page); if (channel->state != CHANNEL_OPENED_STATE) @@ -149,15 +146,6 @@ static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, channel->ringbuffer_pagecount << PAGE_SHIFT); } -static const struct bin_attribute ring_buffer_bin_attr = { - .attr = { - .name = "ring", - .mode = 0600, - }, - .size = 2 * SZ_2M, - .mmap = hv_uio_ring_mmap, -}; - /* Callback from VMBUS subsystem when new channel created. */ static void hv_uio_new_channel(struct vmbus_channel *new_sc) @@ -178,8 +166,7 @@ hv_uio_new_channel(struct vmbus_channel *new_sc) /* Disable interrupts on sub channel */ new_sc->inbound.ring_buffer->interrupt_mask = 1; set_channel_read_mode(new_sc, HV_CALL_ISR); - - ret = sysfs_create_bin_file(&new_sc->kobj, &ring_buffer_bin_attr); + ret = hv_create_ring_sysfs(new_sc, hv_uio_ring_mmap); if (ret) { dev_err(device, "sysfs create ring bin file failed; %d\n", ret); vmbus_close(new_sc); @@ -350,10 +337,18 @@ hv_uio_probe(struct hv_device *dev, goto fail_close; } - ret = sysfs_create_bin_file(&channel->kobj, &ring_buffer_bin_attr); - if (ret) - dev_notice(&dev->device, - "sysfs create ring bin file failed; %d\n", ret); + /* + * This internally calls sysfs_update_group, which returns a non-zero value if it executes + * before sysfs_create_group. This is expected as the 'ring' will be created later in + * vmbus_device_register() -> vmbus_add_channel_kobj(). Thus, no need to check the return + * value and print warning. + * + * Creating/exposing sysfs in driver probe is not encouraged as it can lead to race + * conditions with userspace. For backward compatibility, "ring" sysfs could not be removed + * or decoupled from uio_hv_generic probe. Userspace programs can make use of inotify + * APIs to make sure that ring is created. + */ + hv_create_ring_sysfs(channel, hv_uio_ring_mmap); hv_set_drvdata(dev, pdata); @@ -375,7 +370,7 @@ hv_uio_remove(struct hv_device *dev) if (!pdata) return; - sysfs_remove_bin_file(&dev->channel->kobj, &ring_buffer_bin_attr); + hv_remove_ring_sysfs(dev->channel); uio_unregister_device(&pdata->info); hv_uio_cleanup(dev, pdata); diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h index 675959fb97ba..d6ffe01962c2 100644 --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1002,6 +1002,12 @@ struct vmbus_channel { /* The max size of a packet on this channel */ u32 max_pkt_size; + + /* function to mmap ring buffer memory to the channel's sysfs ring attribute */ + int (*mmap_ring_buffer)(struct vmbus_channel *channel, struct vm_area_struct *vma); + + /* boolean to control visibility of sysfs for ring buffer */ + bool ring_sysfs_visible; }; #define lock_requestor(channel, flags) \

5 months, 4 weeks

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[PATCH v2] clk: meson-g12a: fix missing spicc clks to clk_sel

by Da Xue

HHI_SPICC_CLK_CNTL bits 25:23 controls spicc clk_sel. It is missing fclk_div 2 and gp0_pll which causes the spicc module to output the incorrect clocks for spicc sclk at 2.5x the expected rate. Add the missing clocks resolves this. Fixes: a18c8e0b7697 ("clk: meson: g12a: add support for the SPICC SCLK Source clocks") Cc: <stable(a)vger.kernel.org> # 6.1 Signed-off-by: Da Xue <da(a)libre.computer> --- Changelog: v1 -> v2: add Fixes as an older version of the patch was incorrectly sent as v1 --- drivers/clk/meson/g12a.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/meson/g12a.c b/drivers/clk/meson/g12a.c index 4f92b83965d5a..892862bf39996 100644 --- a/drivers/clk/meson/g12a.c +++ b/drivers/clk/meson/g12a.c @@ -4099,8 +4099,10 @@ static const struct clk_parent_data spicc_sclk_parent_data[] = { { .hw = &g12a_clk81.hw }, { .hw = &g12a_fclk_div4.hw }, { .hw = &g12a_fclk_div3.hw }, + { .hw = &g12a_fclk_div2.hw }, { .hw = &g12a_fclk_div5.hw }, { .hw = &g12a_fclk_div7.hw }, + { .hw = &g12a_gp0_pll.hw, }, }; static struct clk_regmap g12a_spicc0_sclk_sel = { -- 2.39.5

5 months, 4 weeks

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[PATCH v2] drm/tiny: panel-mipi-dbi: Use drm_client_setup_with_fourcc()

by Fabio Estevam

From: Fabio Estevam <festevam(a)denx.de> Since commit 559358282e5b ("drm/fb-helper: Don't use the preferred depth for the BPP default"), RGB565 displays such as the CFAF240320X no longer render correctly: colors are distorted and the content is shown twice horizontally. This regression is due to the fbdev emulation layer defaulting to 32 bits per pixel, whereas the display expects 16 bpp (RGB565). As a result, the framebuffer data is incorrectly interpreted by the panel. Fix the issue by calling drm_client_setup_with_fourcc() with a format explicitly selected based on the display's bits-per-pixel value. For 16 bpp, use DRM_FORMAT_RGB565; for other values, fall back to the previous behavior. This ensures that the allocated framebuffer format matches the hardware expectations, avoiding color and layout corruption. Tested on a CFAF240320X display with an RGB565 configuration, confirming correct colors and layout after applying this patch. Cc: stable(a)vger.kernel.org Fixes: 559358282e5b ("drm/fb-helper: Don't use the preferred depth for the BPP default") Signed-off-by: Fabio Estevam <festevam(a)denx.de> Reviewed-by: Thomas Zimmermann <tzimmermann(a)suse.de> --- Changes since v1: - Improved the commit log. - Added Thomas' Reviewed-by tag. - Added more maintainers on Cc as panel-mipi-dbi.c has been marked as orphan. drivers/gpu/drm/tiny/panel-mipi-dbi.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/tiny/panel-mipi-dbi.c b/drivers/gpu/drm/tiny/panel-mipi-dbi.c index 0460ecaef4bd..23914a9f7fd3 100644 --- a/drivers/gpu/drm/tiny/panel-mipi-dbi.c +++ b/drivers/gpu/drm/tiny/panel-mipi-dbi.c @@ -390,7 +390,10 @@ static int panel_mipi_dbi_spi_probe(struct spi_device *spi) spi_set_drvdata(spi, drm); - drm_client_setup(drm, NULL); + if (bpp == 16) + drm_client_setup_with_fourcc(drm, DRM_FORMAT_RGB565); + else + drm_client_setup_with_fourcc(drm, DRM_FORMAT_RGB888); return 0; } -- 2.34.1

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[PATCH] wifi: mt76: disable napi on driver removal

by Fedor Pchelkin

A warning on driver removal started occurring after commit 9dd05df8403b ("net: warn if NAPI instance wasn't shut down"). Disable tx napi before deleting it in mt76_dma_cleanup(). WARNING: CPU: 4 PID: 18828 at net/core/dev.c:7288 __netif_napi_del_locked+0xf0/0x100 CPU: 4 UID: 0 PID: 18828 Comm: modprobe Not tainted 6.15.0-rc4 #4 PREEMPT(lazy) Hardware name: ASUS System Product Name/PRIME X670E-PRO WIFI, BIOS 3035 09/05/2024 RIP: 0010:__netif_napi_del_locked+0xf0/0x100 Call Trace: <TASK> mt76_dma_cleanup+0x54/0x2f0 [mt76] mt7921_pci_remove+0xd5/0x190 [mt7921e] pci_device_remove+0x47/0xc0 device_release_driver_internal+0x19e/0x200 driver_detach+0x48/0x90 bus_remove_driver+0x6d/0xf0 pci_unregister_driver+0x2e/0xb0 __do_sys_delete_module.isra.0+0x197/0x2e0 do_syscall_64+0x7b/0x160 entry_SYSCALL_64_after_hwframe+0x76/0x7e Tested with mt7921e but the same pattern can be actually applied to other mt76 drivers calling mt76_dma_cleanup() during removal. Tx napi is enabled in their *_dma_init() functions and only toggled off and on again inside their suspend/resume/reset paths. So it should be okay to disable tx napi in such a generic way. Found by Linux Verification Center (linuxtesting.org). Fixes: 2ac515a5d74f ("mt76: mt76x02: use napi polling for tx cleanup") Cc: stable(a)vger.kernel.org Signed-off-by: Fedor Pchelkin <pchelkin(a)ispras.ru> --- drivers/net/wireless/mediatek/mt76/dma.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index 844af16ee551..35b4ec91979e 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -1011,6 +1011,7 @@ void mt76_dma_cleanup(struct mt76_dev *dev) int i; mt76_worker_disable(&dev->tx_worker); + napi_disable(&dev->tx_napi); netif_napi_del(&dev->tx_napi); for (i = 0; i < ARRAY_SIZE(dev->phys); i++) { -- 2.49.0

5 months, 4 weeks

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