- Linux-stable-mirror - lists.linaro.org

by Greg Kroah-Hartman

This is the start of the stable review cycle for the 6.12.59 release. There are 185 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 Sun, 23 Nov 2025 13:01:08 +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-6.12.59-rc… or in the git tree and branch at: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.12.y and the diffstat can be found below. thanks, greg k-h ------------- Pseudo-Shortlog of commits: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Linux 6.12.59-rc1 Pauli Virtanen <pav(a)iki.fi> Bluetooth: MGMT: fix crash in set_mesh_sync and set_mesh_complete Jialin Wang <wjl.linux(a)gmail.com> proc: proc_maps_open allow proc_mem_open to return NULL John Sperbeck <jsperbeck(a)google.com> net: netpoll: ensure skb_pool list is always initialized Horatiu Vultur <horatiu.vultur(a)microchip.com> net: phy: micrel: Fix lan8814_config_init Abdun Nihaal <nihaal(a)cse.iitm.ac.in> isdn: mISDN: hfcsusb: fix memory leak in hfcsusb_probe() Zi Yan <ziy(a)nvidia.com> mm/huge_memory: preserve PG_has_hwpoisoned if a folio is split to >0 order Zi Yan <ziy(a)nvidia.com> mm/huge_memory: do not change split_huge_page*() target order silently Lance Yang <lance.yang(a)linux.dev> mm/secretmem: fix use-after-free race in fault handler Kiryl Shutsemau <kas(a)kernel.org> mm/truncate: unmap large folio on split failure Kiryl Shutsemau <kas(a)kernel.org> mm/memory: do not populate page table entries beyond i_size Long Li <longli(a)microsoft.com> uio_hv_generic: Set event for all channels on the device Miguel Ojeda <ojeda(a)kernel.org> rust: kbuild: workaround `rustdoc` doctests modifier bug Miguel Ojeda <ojeda(a)kernel.org> rust: kbuild: treat `build_error` and `rustdoc` as kernel objects Olivier Langlois <olivier(a)trillion01.com> io_uring/napi: fix io_napi_entry RCU accesses Denis Arefev <arefev(a)swemel.ru> ALSA: hda: Fix missing pointer check in hda_component_manager_init function Sukrit Bhatnagar <Sukrit.Bhatnagar(a)sony.com> KVM: VMX: Fix check for valid GVA on an EPT violation Sean Christopherson <seanjc(a)google.com> KVM: VMX: Split out guts of EPT violation to common/exposed function Breno Leitao <leitao(a)debian.org> net: netpoll: fix incorrect refcount handling causing incorrect cleanup Breno Leitao <leitao(a)debian.org> net: netpoll: flush skb pool during cleanup Breno Leitao <leitao(a)debian.org> net: netpoll: Individualize the skb pool Sean Christopherson <seanjc(a)google.com> KVM: guest_memfd: Remove bindings on memslot deletion when gmem is dying Yan Zhao <yan.y.zhao(a)intel.com> KVM: guest_memfd: Remove RCU-protected attribute from slot->gmem.file Sean Christopherson <seanjc(a)google.com> KVM: guest_memfd: Pass index, not gfn, to __kvm_gmem_get_pfn() Michal Hocko <mhocko(a)suse.com> mm, percpu: do not consider sleepable allocations atomic Benjamin Berg <benjamin.berg(a)intel.com> wifi: mac80211: use wiphy_hrtimer_work for csa.switch_work Benjamin Berg <benjamin.berg(a)intel.com> wifi: cfg80211: add an hrtimer based delayed work item Paolo Abeni <pabeni(a)redhat.com> mptcp: fix MSG_PEEK stream corruption Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: join: properly kill background tasks Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: join: userspace: longer transfer Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: connect: trunc: read all recv data Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: join: endpoints: longer transfer Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: join: rm: set backup flag Matthieu Baerts (NGI0) <matttbe(a)kernel.org> selftests: mptcp: connect: fix fallback note due to OoO André Draszik <andre.draszik(a)linaro.org> pmdomain: samsung: plug potential memleak during probe Miaoqian Lin <linmq006(a)gmail.com> pmdomain: imx: Fix reference count leak in imx_gpc_remove Sudeep Holla <sudeep.holla(a)arm.com> pmdomain: arm: scmi: Fix genpd leak on provider registration failure Vitaly Prosyak <vitaly.prosyak(a)amd.com> drm/amdgpu: disable peer-to-peer access for DCC-enabled GC12 VRAM surfaces Jonathan Kim <jonathan.kim(a)amd.com> drm/amdkfd: relax checks for over allocation of save area Zilin Guan <zilin(a)seu.edu.cn> btrfs: release root after error in data_reloc_print_warning_inode() Filipe Manana <fdmanana(a)suse.com> btrfs: do not update last_log_commit when logging inode due to a new name Zilin Guan <zilin(a)seu.edu.cn> btrfs: scrub: put bio after errors in scrub_raid56_parity_stripe() Naohiro Aota <naohiro.aota(a)wdc.com> btrfs: zoned: fix conventional zone capacity calculation Mario Limonciello (AMD) <superm1(a)kernel.org> PM: hibernate: Use atomic64_t for compressed_size variable Mario Limonciello (AMD) <superm1(a)kernel.org> PM: hibernate: Emit an error when image writing fails Niravkumar L Rabara <niravkumarlaxmidas.rabara(a)altera.com> EDAC/altera: Use INTTEST register for Ethernet and USB SBE injection Niravkumar L Rabara <niravkumarlaxmidas.rabara(a)altera.com> EDAC/altera: Handle OCRAM ECC enable after warm reset Huacai Chen <chenhuacai(a)kernel.org> LoongArch: Use physical addresses for CSR_MERRENTRY/CSR_TLBRENTRY Song Liu <song(a)kernel.org> ftrace: Fix BPF fexit with livepatch Ankit Khushwaha <ankitkhushwaha.linux(a)gmail.com> selftests/user_events: fix type cast for write_index packed member in perf_test Borislav Petkov (AMD) <bp(a)alien8.de> x86/microcode/AMD: Add Zen5 model 0x44, stepping 0x1 minrev Hans de Goede <hansg(a)kernel.org> spi: Try to get ACPI GPIO IRQ earlier Henrique Carvalho <henrique.carvalho(a)suse.com> smb: client: fix cifs_pick_channel when channel needs reconnect Miaoqian Lin <linmq006(a)gmail.com> crypto: hisilicon/qm - Fix device reference leak in qm_get_qos_value Sourabh Jain <sourabhjain(a)linux.ibm.com> crash: fix crashkernel resource shrink Hao Ge <gehao(a)kylinos.cn> codetag: debug: handle existing CODETAG_EMPTY in mark_objexts_empty for slabobj_ext Edward Adam Davis <eadavis(a)qq.com> cifs: client: fix memory leak in smb3_fs_context_parse_param Takashi Iwai <tiwai(a)suse.de> ALSA: usb-audio: Fix potential overflow of PCM transfer buffer Shawn Lin <shawn.lin(a)rock-chips.com> mmc: dw_mmc-rockchip: Fix wrong internal phase calculate Shawn Lin <shawn.lin(a)rock-chips.com> mmc: sdhci-of-dwcmshc: Change DLL_STRBIN_TAPNUM_DEFAULT to 0x4 Kairui Song <kasong(a)tencent.com> mm/shmem: fix THP allocation and fallback loop Isaac J. Manjarres <isaacmanjarres(a)google.com> mm/mm_init: fix hash table order logging in alloc_large_system_hash() Wei Yang <albinwyang(a)tencent.com> fs/proc: fix uaf in proc_readdir_de() Johannes Berg <johannes.berg(a)intel.com> wifi: mac80211: reject address change while connecting Steven Rostedt <rostedt(a)goodmis.org> selftests/tracing: Run sample events to clear page cache events Edward Adam Davis <eadavis(a)qq.com> nilfs2: avoid having an active sc_timer before freeing sci Chuang Wang <nashuiliang(a)gmail.com> ipv4: route: Prevent rt_bind_exception() from rebinding stale fnhe Tianyang Zhang <zhangtianyang(a)loongson.cn> LoongArch: Let {pte,pmd}_modify() record the status of _PAGE_DIRTY Huacai Chen <chenhuacai(a)kernel.org> LoongArch: Use correct accessor to read FWPC/MWPC Qinxin Xia <xiaqinxin(a)huawei.com> dma-mapping: benchmark: Restore padding to ensure uABI remained consistent Nate Karstens <nate.karstens(a)garmin.com> strparser: Fix signed/unsigned mismatch bug Pedro Demarchi Gomes <pedrodemargomes(a)gmail.com> ksm: use range-walk function to jump over holes in scan_get_next_rmap_item Joshua Rogers <linux(a)joshua.hu> ksmbd: close accepted socket when per-IP limit rejects connection Peter Oberparleiter <oberpar(a)linux.ibm.com> gcov: add support for GCC 15 Olga Kornievskaia <okorniev(a)redhat.com> NFSD: free copynotify stateid in nfs4_free_ol_stateid() Olga Kornievskaia <okorniev(a)redhat.com> nfsd: add missing FATTR4_WORD2_CLONE_BLKSIZE from supported attributes NeilBrown <neil(a)brown.name> nfsd: fix refcount leak in nfsd_set_fh_dentry() Yosry Ahmed <yosry.ahmed(a)linux.dev> KVM: SVM: Mark VMCB_LBR dirty when MSR_IA32_DEBUGCTLMSR is updated Bibo Mao <maobibo(a)loongson.cn> LoongArch: KVM: Add delay until timer interrupt injected Bibo Mao <maobibo(a)loongson.cn> LoongArch: KVM: Restore guest PMU if it is enabled Vladimir Oltean <vladimir.oltean(a)nxp.com> net: dsa: sja1105: fix kasan out-of-bounds warning in sja1105_table_delete_entry() Abdun Nihaal <nihaal(a)cse.iitm.ac.in> HID: uclogic: Fix potential memory leak in error path Abdun Nihaal <nihaal(a)cse.iitm.ac.in> HID: playstation: Fix memory leak in dualshock4_get_calibration_data() Rafał Miłecki <rafal(a)milecki.pl> ARM: dts: BCM53573: Fix address of Luxul XAP-1440's Ethernet PHY Masami Ichikawa <masami256(a)gmail.com> HID: hid-ntrig: Prevent memory leak in ntrig_report_version() Jihed Chaibi <jihed.chaibi.dev(a)gmail.com> ARM: dts: imx51-zii-rdu1: Fix audmux node names Dragan Simic <dsimic(a)manjaro.org> arm64: dts: rockchip: Make RK3588 GPU OPP table naming less generic Anand Moon <linux.amoon(a)gmail.com> arm64: dts: rockchip: Set correct pinctrl for I2S1 8ch TX on odroid-m1 Pablo Neira Ayuso <pablo(a)netfilter.org> netfilter: nf_tables: reject duplicate device on updates Pablo Neira Ayuso <pablo(a)netfilter.org> Revert "netfilter: nf_tables: Reintroduce shortened deletion notifications" Zqiang <qiang.zhang(a)linux.dev> sched_ext: Fix unsafe locking in the scx_dump_state() Andrei Vagin <avagin(a)google.com> fs/namespace: correctly handle errors returned by grab_requested_mnt_ns Alok Tiwari <alok.a.tiwari(a)oracle.com> virtio-fs: fix incorrect check for fsvq->kobj Dan Carpenter <dan.carpenter(a)linaro.org> mtd: onenand: Pass correct pointer to IRQ handler Hongbo Li <lihongbo22(a)huawei.com> hostfs: Fix only passing host root in boot stage with new mount Chao Yu <chao(a)kernel.org> f2fs: fix to avoid overflow while left shift operation Luiz Augusto von Dentz <luiz.von.dentz(a)intel.com> Bluetooth: MGMT: Fix possible UAFs Ye Bin <yebin10(a)huawei.com> ext4: fix out-of-bound read in ext4_xattr_inode_dec_ref_all() Eric Biggers <ebiggers(a)kernel.org> lib/crypto: arm/curve25519: Disable on CPU_BIG_ENDIAN Ye Bin <yebin10(a)huawei.com> ext4: introduce ITAIL helper Penglei Jiang <superman.xpt(a)gmail.com> proc: fix the issue of proc_mem_open returning NULL Manivannan Sadhasivam <manivannan.sadhasivam(a)linaro.org> wifi: ath11k: Clear affinity hint before calling ath11k_pcic_free_irq() in error path Nick Hu <nick.hu(a)sifive.com> irqchip/riscv-intc: Add missing free() callback in riscv_intc_domain_ops Eduard Zingerman <eddyz87(a)gmail.com> bpf: account for current allocated stack depth in widen_imprecise_scalars() Eric Dumazet <edumazet(a)google.com> bpf: Add bpf_prog_run_data_pointers() Dave Jiang <dave.jiang(a)intel.com> acpi/hmat: Fix lockdep warning for hmem_register_resource() Haein Lee <lhi0729(a)kaist.ac.kr> ALSA: usb-audio: Fix NULL pointer dereference in snd_usb_mixer_controls_badd Dai Ngo <dai.ngo(a)oracle.com> NFS: Fix LTP test failures when timestamps are delegated Trond Myklebust <trond.myklebust(a)hammerspace.com> NFSv4: Fix an incorrect parameter when calling nfs4_call_sync() Yang Xiuwei <yangxiuwei(a)kylinos.cn> NFS: sysfs: fix leak when nfs_client kobject add fails Trond Myklebust <trond.myklebust(a)hammerspace.com> NFSv2/v3: Fix error handling in nfs_atomic_open_v23() Al Viro <viro(a)zeniv.linux.org.uk> simplify nfs_atomic_open_v23() Trond Myklebust <trond.myklebust(a)hammerspace.com> pnfs: Set transport security policy to RPC_XPRTSEC_NONE unless using TLS Trond Myklebust <trond.myklebust(a)hammerspace.com> pnfs: Fix TLS logic in _nfs4_pnfs_v4_ds_connect() Shenghao Ding <shenghao-ding(a)ti.com> ASoC: tas2781: fix getting the wrong device number Ian Forbes <ian.forbes(a)broadcom.com> drm/vmwgfx: Validate command header size against SVGA_CMD_MAX_DATASIZE Haotian Zhang <vulab(a)iscas.ac.cn> ASoC: codecs: va-macro: fix resource leak in probe error path Haotian Zhang <vulab(a)iscas.ac.cn> ASoC: cs4271: Fix regulator leak on probe failure Haotian Zhang <vulab(a)iscas.ac.cn> regulator: fixed: fix GPIO descriptor leak on register failure Shuai Xue <xueshuai(a)linux.alibaba.com> acpi,srat: Fix incorrect device handle check for Generic Initiator Pauli Virtanen <pav(a)iki.fi> Bluetooth: L2CAP: export l2cap_chan_hold for modules Gautham R. Shenoy <gautham.shenoy(a)amd.com> ACPI: CPPC: Limit perf ctrs in PCC check only to online CPUs Gautham R. Shenoy <gautham.shenoy(a)amd.com> ACPI: CPPC: Perform fast check switch only for online CPUs Gautham R. Shenoy <gautham.shenoy(a)amd.com> ACPI: CPPC: Check _CPC validity for only the online CPUs Gautham R. Shenoy <gautham.shenoy(a)amd.com> ACPI: CPPC: Detect preferred core availability on online CPUs Felix Maurer <fmaurer(a)redhat.com> hsr: Fix supervision frame sending on HSRv0 Xuan Zhuo <xuanzhuo(a)linux.alibaba.com> virtio-net: fix incorrect flags recording in big mode Eric Dumazet <edumazet(a)google.com> net_sched: limit try_bulk_dequeue_skb() batches Gal Pressman <gal(a)nvidia.com> net/mlx5e: Fix potentially misleading debug message Gal Pressman <gal(a)nvidia.com> net/mlx5e: Fix wraparound in rate limiting for values above 255 Gbps Gal Pressman <gal(a)nvidia.com> net/mlx5e: Fix maxrate wraparound in threshold between units Ranganath V N <vnranganath.20(a)gmail.com> net: sched: act_ife: initialize struct tc_ife to fix KMSAN kernel-infoleak Ranganath V N <vnranganath.20(a)gmail.com> net: sched: act_connmark: initialize struct tc_ife to fix kernel leak Eric Dumazet <edumazet(a)google.com> net_sched: act_connmark: use RCU in tcf_connmark_dump() Kuniyuki Iwashima <kuniyu(a)google.com> af_unix: Initialise scc_index in unix_add_edge(). Benjamin Berg <benjamin.berg(a)intel.com> wifi: mac80211: skip rate verification for not captured PSDUs Buday Csaba <buday.csaba(a)prolan.hu> net: mdio: fix resource leak in mdiobus_register_device() Kuniyuki Iwashima <kuniyu(a)google.com> tipc: Fix use-after-free in tipc_mon_reinit_self(). Aksh Garg <a-garg7(a)ti.com> net: ethernet: ti: am65-cpsw-qos: fix IET verify retry mechanism Aksh Garg <a-garg7(a)ti.com> net: ethernet: ti: am65-cpsw-qos: fix IET verify/response timeout Zilin Guan <zilin(a)seu.edu.cn> net/handshake: Fix memory leak in tls_handshake_accept() D. Wythe <alibuda(a)linux.alibaba.com> net/smc: fix mismatch between CLC header and proposal Eric Dumazet <edumazet(a)google.com> sctp: prevent possible shift-out-of-bounds in sctp_transport_update_rto Pauli Virtanen <pav(a)iki.fi> Bluetooth: 6lowpan: Don't hold spin lock over sleeping functions Pauli Virtanen <pav(a)iki.fi> Bluetooth: 6lowpan: fix BDADDR_LE vs ADDR_LE_DEV address type confusion Pauli Virtanen <pav(a)iki.fi> Bluetooth: 6lowpan: reset link-local header on ipv6 recv path Raphael Pinsonneault-Thibeault <rpthibeault(a)gmail.com> Bluetooth: btusb: reorder cleanup in btusb_disconnect to avoid UAF Pauli Virtanen <pav(a)iki.fi> Bluetooth: MGMT: cancel mesh send timer when hdev removed Chuck Lever <chuck.lever(a)oracle.com> NFSD: Skip close replay processing if XDR encoding fails Xi Ruoyao <xry111(a)xry111.site> rust: Add -fno-isolate-erroneous-paths-dereference to bindgen_skip_c_flags Horatiu Vultur <horatiu.vultur(a)microchip.com> net: phy: micrel: lan8814 fix reset of the QSGMII interface Horatiu Vultur <horatiu.vultur(a)microchip.com> net: phy: micrel: Replace hardcoded pages with defines Horatiu Vultur <horatiu.vultur(a)microchip.com> net: phy: micrel: Introduce lanphy_modify_page_reg Wei Fang <wei.fang(a)nxp.com> net: fec: correct rx_bytes statistic for the case SHIFT16 is set Alexander Sverdlin <alexander.sverdlin(a)siemens.com> selftests: net: local_termination: Wait for interfaces to come up Gao Xiang <xiang(a)kernel.org> erofs: avoid infinite loop due to incomplete zstd-compressed data Nicolas Escande <nico.escande(a)gmail.com> wifi: ath11k: zero init info->status in wmi_process_mgmt_tx_comp() Sharique Mohammad <sharq0406(a)gmail.com> ASoC: max98090/91: fixed max98091 ALSA widget powering up/down Stuart Hayhurst <stuart.a.hayhurst(a)gmail.com> HID: logitech-hidpp: Add HIDPP_QUIRK_RESET_HI_RES_SCROLL ZhangGuoDong <zhangguodong(a)kylinos.cn> smb/server: fix possible refcount leak in smb2_sess_setup() ZhangGuoDong <zhangguodong(a)kylinos.cn> smb/server: fix possible memory leak in smb2_read() Jaehun Gou <p22gone(a)gmail.com> exfat: fix improper check of dentry.stream.valid_size Oleg Makarenko <oleg(a)makarenk.ooo> HID: quirks: Add ALWAYS_POLL quirk for VRS R295 steering wheel Scott Mayhew <smayhew(a)redhat.com> NFS: check if suid/sgid was cleared after a write as needed Vicki Pfau <vi(a)endrift.com> HID: nintendo: Wait longer for initial probe Tristan Lobb <tristan.lobb(a)it-lobb.de> HID: quirks: avoid Cooler Master MM712 dongle wakeup bug Joshua Watt <jpewhacker(a)gmail.com> NFS4: Apply delay_retrans to async operations Joshua Watt <jpewhacker(a)gmail.com> NFS4: Fix state renewals missing after boot Jesse.Zhang <Jesse.Zhang(a)amd.com> drm/amdgpu: Fix NULL pointer dereference in VRAM logic for APU devices Christian König <christian.koenig(a)amd.com> drm/amdgpu: hide VRAM sysfs attributes on GPUs without VRAM Timur Kristóf <timur.kristof(a)gmail.com> drm/amd/pm: Disable MCLK switching on SI at high pixel clocks Christian König <christian.koenig(a)amd.com> drm/amdgpu: remove two invalid BUG_ON()s Han Gao <rabenda.cn(a)gmail.com> riscv: acpi: avoid errors caused by probing DT devices when ACPI is used Danil Skrebenkov <danil.skrebenkov(a)cloudbear.ru> RISC-V: clear hot-unplugged cores from all task mm_cpumasks to avoid rfence errors Feng Jiang <jiangfeng(a)kylinos.cn> riscv: Build loader.bin exclusively for Canaan K210 Peter Zijlstra <peterz(a)infradead.org> compiler_types: Move unused static inline functions warning to W=2 Yang Shi <yang(a)os.amperecomputing.com> arm64: kprobes: check the return value of set_memory_rox() Jouni Högander <jouni.hogander(a)intel.com> drm/xe: Do clean shutdown also when using flr Tejas Upadhyay <tejas.upadhyay(a)intel.com> drm/xe: Move declarations under conditional branch Balasubramani Vivekanandan <balasubramani.vivekanandan(a)intel.com> drm/xe/guc: Synchronize Dead CT worker with unbind Mario Limonciello <mario.limonciello(a)amd.com> drm/amd: Fix suspend failure with secure display TA Jason Gunthorpe <jgg(a)ziepe.ca> iommufd: Make vfio_compat's unmap succeed if the range is already empty Shuhao Fu <sfual(a)cse.ust.hk> smb: client: fix refcount leak in smb2_set_path_attr Umesh Nerlige Ramappa <umesh.nerlige.ramappa(a)intel.com> drm/i915: Fix conversion between clock ticks and nanoseconds Janusz Krzysztofik <janusz.krzysztofik(a)linux.intel.com> drm/i915: Avoid lock inversion when pinning to GGTT on CHV/BXT+VTD Jason-JH Lin <jason-jh.lin(a)mediatek.com> drm/mediatek: Add pm_runtime support for GCE power control ------------- Diffstat: Makefile | 4 +- .../boot/dts/broadcom/bcm47189-luxul-xap-1440.dts | 4 +- arch/arm/boot/dts/nxp/imx/imx51-zii-rdu1.dts | 4 +- arch/arm/crypto/Kconfig | 2 +- arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts | 2 + arch/arm64/boot/dts/rockchip/rk3588-opp.dtsi | 2 +- arch/arm64/boot/dts/rockchip/rk3588j.dtsi | 2 +- arch/arm64/kernel/probes/kprobes.c | 5 +- arch/loongarch/include/asm/hw_breakpoint.h | 4 +- arch/loongarch/include/asm/pgtable.h | 11 +- arch/loongarch/kernel/traps.c | 4 +- arch/loongarch/kvm/timer.c | 2 + arch/loongarch/kvm/vcpu.c | 5 + arch/riscv/Makefile | 2 +- arch/riscv/kernel/cpu-hotplug.c | 1 + arch/riscv/kernel/setup.c | 7 +- arch/x86/kernel/acpi/cppc.c | 2 +- arch/x86/kernel/cpu/microcode/amd.c | 1 + arch/x86/kvm/svm/svm.c | 4 + arch/x86/kvm/vmx/common.h | 34 ++ arch/x86/kvm/vmx/vmx.c | 25 +- drivers/acpi/cppc_acpi.c | 6 +- drivers/acpi/numa/hmat.c | 46 +- drivers/acpi/numa/srat.c | 2 +- drivers/bluetooth/btusb.c | 13 +- drivers/crypto/hisilicon/qm.c | 2 + drivers/edac/altera_edac.c | 22 +- drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 2 +- drivers/gpu/drm/amd/amdgpu/amdgpu_dma_buf.c | 12 + drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 7 +- drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 5 +- drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 4 +- drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c | 3 + drivers/gpu/drm/amd/amdgpu/gfx_v11_0.c | 2 - drivers/gpu/drm/amd/amdgpu/gfx_v12_0.c | 2 - drivers/gpu/drm/amd/amdkfd/kfd_queue.c | 12 +- drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c | 5 + drivers/gpu/drm/i915/gt/intel_gt_clock_utils.c | 4 +- drivers/gpu/drm/i915/i915_vma.c | 16 +- drivers/gpu/drm/mediatek/mtk_crtc.c | 7 + drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c | 5 + drivers/gpu/drm/xe/xe_device.c | 14 +- drivers/gpu/drm/xe/xe_guc_ct.c | 3 + drivers/hid/hid-ids.h | 4 + drivers/hid/hid-logitech-hidpp.c | 21 + drivers/hid/hid-nintendo.c | 2 +- drivers/hid/hid-ntrig.c | 7 +- drivers/hid/hid-playstation.c | 2 + drivers/hid/hid-quirks.c | 2 + drivers/hid/hid-uclogic-params.c | 4 +- drivers/iommu/iommufd/io_pagetable.c | 12 +- drivers/iommu/iommufd/ioas.c | 4 + drivers/irqchip/irq-riscv-intc.c | 3 +- drivers/isdn/hardware/mISDN/hfcsusb.c | 18 +- drivers/mmc/host/dw_mmc-rockchip.c | 4 +- drivers/mmc/host/sdhci-of-dwcmshc.c | 2 +- drivers/mtd/nand/onenand/onenand_samsung.c | 2 +- drivers/net/dsa/sja1105/sja1105_static_config.c | 6 +- drivers/net/ethernet/freescale/fec_main.c | 2 + drivers/net/ethernet/mellanox/mlx5/core/en_dcbnl.c | 33 +- drivers/net/ethernet/ti/am65-cpsw-qos.c | 53 ++- drivers/net/phy/mdio_bus.c | 5 +- drivers/net/phy/micrel.c | 515 +++++++++++++-------- drivers/net/virtio_net.c | 16 +- drivers/net/wireless/ath/ath11k/pci.c | 2 + drivers/net/wireless/ath/ath11k/wmi.c | 3 + drivers/pmdomain/arm/scmi_pm_domain.c | 13 +- drivers/pmdomain/imx/gpc.c | 2 + drivers/pmdomain/samsung/exynos-pm-domains.c | 11 +- drivers/regulator/fixed.c | 1 + drivers/spi/spi.c | 10 + drivers/uio/uio_hv_generic.c | 32 +- fs/btrfs/inode.c | 4 +- fs/btrfs/scrub.c | 2 + fs/btrfs/tree-log.c | 2 +- fs/btrfs/zoned.c | 4 +- fs/erofs/decompressor_zstd.c | 11 +- fs/exfat/namei.c | 6 +- fs/ext4/inode.c | 5 + fs/ext4/xattr.c | 32 +- fs/ext4/xattr.h | 10 + fs/f2fs/compress.c | 2 +- fs/fuse/virtio_fs.c | 2 +- fs/hostfs/hostfs_kern.c | 29 +- fs/namespace.c | 32 +- fs/nfs/dir.c | 23 +- fs/nfs/inode.c | 18 +- fs/nfs/nfs3client.c | 14 +- fs/nfs/nfs4client.c | 15 +- fs/nfs/nfs4proc.c | 22 +- fs/nfs/pnfs_nfs.c | 34 +- fs/nfs/sysfs.c | 1 + fs/nfs/write.c | 3 +- fs/nfsd/nfs4state.c | 3 +- fs/nfsd/nfs4xdr.c | 3 +- fs/nfsd/nfsd.h | 1 + fs/nfsd/nfsfh.c | 6 +- fs/nilfs2/segment.c | 7 +- fs/proc/base.c | 12 +- fs/proc/generic.c | 12 +- fs/proc/task_mmu.c | 8 +- fs/proc/task_nommu.c | 4 +- fs/smb/client/fs_context.c | 2 + fs/smb/client/smb2inode.c | 2 + fs/smb/client/transport.c | 2 +- fs/smb/server/smb2pdu.c | 2 + fs/smb/server/transport_tcp.c | 5 +- include/linux/compiler_types.h | 5 +- include/linux/filter.h | 20 + include/linux/huge_mm.h | 21 +- include/linux/kvm_host.h | 7 +- include/linux/map_benchmark.h | 1 + include/linux/netpoll.h | 1 + include/linux/nfs_xdr.h | 1 + include/net/bluetooth/mgmt.h | 2 +- include/net/cfg80211.h | 78 ++++ include/net/tc_act/tc_connmark.h | 1 + include/uapi/linux/mount.h | 2 +- io_uring/napi.c | 19 +- kernel/bpf/trampoline.c | 5 - kernel/bpf/verifier.c | 6 +- kernel/crash_core.c | 2 +- kernel/gcov/gcc_4_7.c | 4 +- kernel/power/swap.c | 17 +- kernel/sched/ext.c | 4 +- kernel/trace/ftrace.c | 20 +- mm/filemap.c | 20 +- mm/huge_memory.c | 32 +- mm/ksm.c | 113 ++++- mm/memory.c | 23 +- mm/mm_init.c | 2 +- mm/percpu.c | 8 +- mm/secretmem.c | 2 +- mm/shmem.c | 9 +- mm/slub.c | 6 +- mm/truncate.c | 27 +- net/bluetooth/6lowpan.c | 103 +++-- net/bluetooth/l2cap_core.c | 1 + net/bluetooth/mgmt.c | 260 ++++++++--- net/bluetooth/mgmt_util.c | 46 ++ net/bluetooth/mgmt_util.h | 3 + net/core/netpoll.c | 56 ++- net/handshake/tlshd.c | 1 + net/hsr/hsr_device.c | 3 + net/ipv4/route.c | 5 + net/mac80211/chan.c | 2 +- net/mac80211/ieee80211_i.h | 4 +- net/mac80211/iface.c | 14 +- net/mac80211/link.c | 4 +- net/mac80211/mlme.c | 18 +- net/mac80211/rx.c | 10 +- net/mptcp/protocol.c | 36 +- net/netfilter/nf_tables_api.c | 66 ++- net/sched/act_bpf.c | 6 +- net/sched/act_connmark.c | 30 +- net/sched/act_ife.c | 12 +- net/sched/cls_bpf.c | 6 +- net/sched/sch_generic.c | 17 +- net/sctp/transport.c | 13 +- net/smc/smc_clc.c | 1 + net/strparser/strparser.c | 2 +- net/tipc/net.c | 2 + net/unix/garbage.c | 14 +- net/wireless/core.c | 56 +++ net/wireless/trace.h | 21 + rust/Makefile | 16 +- sound/pci/hda/hda_component.c | 4 + sound/soc/codecs/cs4271.c | 10 +- sound/soc/codecs/lpass-va-macro.c | 2 +- sound/soc/codecs/max98090.c | 6 +- sound/soc/codecs/tas2781-i2c.c | 9 +- sound/usb/endpoint.c | 5 + sound/usb/mixer.c | 2 + .../ftrace/test.d/filter/event-filter-function.tc | 4 + tools/testing/selftests/iommu/iommufd.c | 2 + .../selftests/net/forwarding/local_termination.sh | 2 + tools/testing/selftests/net/mptcp/mptcp_connect.c | 18 +- tools/testing/selftests/net/mptcp/mptcp_connect.sh | 2 +- tools/testing/selftests/net/mptcp/mptcp_join.sh | 90 ++-- tools/testing/selftests/net/mptcp/mptcp_lib.sh | 21 + tools/testing/selftests/user_events/perf_test.c | 2 +- virt/kvm/guest_memfd.c | 89 ++-- 182 files changed, 2094 insertions(+), 912 deletions(-)

1 day, 15 hours

12
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[PATCH] net: dsa: microchip: fix mdio parent bus reference leak

by Ma Ke

In ksz_mdio_register(), when of_mdio_find_bus() is called to get the parent MDIO bus, it increments the reference count of the underlying device. However, the reference are not released in error paths or during switch teardown, causing a reference leak. Add put_device() in the error path of ksz_mdio_register() and ksz_teardown() to release the parent bus. Found by code review. Cc: stable(a)vger.kernel.org Fixes: 9afaf0eec2ab ("net: dsa: microchip: Refactor MDIO handling for side MDIO access") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- drivers/net/dsa/microchip/ksz_common.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c index 933ae8dc6337..49c0420a6df8 100644 --- a/drivers/net/dsa/microchip/ksz_common.c +++ b/drivers/net/dsa/microchip/ksz_common.c @@ -2795,6 +2795,11 @@ static int ksz_mdio_register(struct ksz_device *dev) } put_mdio_node: + if (ret && dev->parent_mdio_bus) { + put_device(&dev->parent_mdio_bus->dev); + dev->parent_mdio_bus = NULL; + } + of_node_put(mdio_np); of_node_put(parent_bus_node); @@ -3110,6 +3115,11 @@ static void ksz_teardown(struct dsa_switch *ds) ksz_irq_free(&dev->girq); } + if (dev->parent_mdio_bus) { + put_device(&dev->parent_mdio_bus->dev); + dev->parent_mdio_bus = NULL; + } + if (dev->dev_ops->teardown) dev->dev_ops->teardown(ds); } -- 2.17.1

1 day, 15 hours

3
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FAILED: patch "[PATCH] KVM: arm64: Make all 32bit ID registers fully writable" 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 3f9eacf4f0705876a5d6526d7d320ca91d7d7a16 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025112021-arrest-chip-7336@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ From 3f9eacf4f0705876a5d6526d7d320ca91d7d7a16 Mon Sep 17 00:00:00 2001 From: Marc Zyngier <maz(a)kernel.org> Date: Thu, 30 Oct 2025 12:27:05 +0000 Subject: [PATCH] KVM: arm64: Make all 32bit ID registers fully writable 32bit ID registers aren't getting much love these days, and are often missed in updates. One of these updates broke restoring a GICv2 guest on a GICv3 machine. Instead of performing a piecemeal fix, just bite the bullet and make all 32bit ID regs fully writable. KVM itself never relies on them for anything, and if the VMM wants to mess up the guest, so be it. Fixes: 5cb57a1aff755 ("KVM: arm64: Zero ID_AA64PFR0_EL1.GIC when no GICv3 is presented to the guest") Reported-by: Peter Maydell <peter.maydell(a)linaro.org> Cc: stable(a)vger.kernel.org Reviewed-by: Oliver Upton <oupton(a)kernel.org> Link: https://patch.msgid.link/20251030122707.2033690-2-maz@kernel.org Signed-off-by: Marc Zyngier <maz(a)kernel.org> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index e67eb39ddc11..ad82264c6cbe 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2595,19 +2595,23 @@ static bool bad_redir_trap(struct kvm_vcpu *vcpu, .val = 0, \ } -/* sys_reg_desc initialiser for known cpufeature ID registers */ -#define AA32_ID_SANITISED(name) { \ - ID_DESC(name), \ - .visibility = aa32_id_visibility, \ - .val = 0, \ -} - /* sys_reg_desc initialiser for writable ID registers */ #define ID_WRITABLE(name, mask) { \ ID_DESC(name), \ .val = mask, \ } +/* + * 32bit ID regs are fully writable when the guest is 32bit + * capable. Nothing in the KVM code should rely on 32bit features + * anyway, only 64bit, so let the VMM do its worse. + */ +#define AA32_ID_WRITABLE(name) { \ + ID_DESC(name), \ + .visibility = aa32_id_visibility, \ + .val = GENMASK(31, 0), \ +} + /* sys_reg_desc initialiser for cpufeature ID registers that need filtering */ #define ID_FILTERED(sysreg, name, mask) { \ ID_DESC(sysreg), \ @@ -3128,40 +3132,39 @@ static const struct sys_reg_desc sys_reg_descs[] = { /* AArch64 mappings of the AArch32 ID registers */ /* CRm=1 */ - AA32_ID_SANITISED(ID_PFR0_EL1), - AA32_ID_SANITISED(ID_PFR1_EL1), + AA32_ID_WRITABLE(ID_PFR0_EL1), + AA32_ID_WRITABLE(ID_PFR1_EL1), { SYS_DESC(SYS_ID_DFR0_EL1), .access = access_id_reg, .get_user = get_id_reg, .set_user = set_id_dfr0_el1, .visibility = aa32_id_visibility, .reset = read_sanitised_id_dfr0_el1, - .val = ID_DFR0_EL1_PerfMon_MASK | - ID_DFR0_EL1_CopDbg_MASK, }, + .val = GENMASK(31, 0) }, ID_HIDDEN(ID_AFR0_EL1), - AA32_ID_SANITISED(ID_MMFR0_EL1), - AA32_ID_SANITISED(ID_MMFR1_EL1), - AA32_ID_SANITISED(ID_MMFR2_EL1), - AA32_ID_SANITISED(ID_MMFR3_EL1), + AA32_ID_WRITABLE(ID_MMFR0_EL1), + AA32_ID_WRITABLE(ID_MMFR1_EL1), + AA32_ID_WRITABLE(ID_MMFR2_EL1), + AA32_ID_WRITABLE(ID_MMFR3_EL1), /* CRm=2 */ - AA32_ID_SANITISED(ID_ISAR0_EL1), - AA32_ID_SANITISED(ID_ISAR1_EL1), - AA32_ID_SANITISED(ID_ISAR2_EL1), - AA32_ID_SANITISED(ID_ISAR3_EL1), - AA32_ID_SANITISED(ID_ISAR4_EL1), - AA32_ID_SANITISED(ID_ISAR5_EL1), - AA32_ID_SANITISED(ID_MMFR4_EL1), - AA32_ID_SANITISED(ID_ISAR6_EL1), + AA32_ID_WRITABLE(ID_ISAR0_EL1), + AA32_ID_WRITABLE(ID_ISAR1_EL1), + AA32_ID_WRITABLE(ID_ISAR2_EL1), + AA32_ID_WRITABLE(ID_ISAR3_EL1), + AA32_ID_WRITABLE(ID_ISAR4_EL1), + AA32_ID_WRITABLE(ID_ISAR5_EL1), + AA32_ID_WRITABLE(ID_MMFR4_EL1), + AA32_ID_WRITABLE(ID_ISAR6_EL1), /* CRm=3 */ - AA32_ID_SANITISED(MVFR0_EL1), - AA32_ID_SANITISED(MVFR1_EL1), - AA32_ID_SANITISED(MVFR2_EL1), + AA32_ID_WRITABLE(MVFR0_EL1), + AA32_ID_WRITABLE(MVFR1_EL1), + AA32_ID_WRITABLE(MVFR2_EL1), ID_UNALLOCATED(3,3), - AA32_ID_SANITISED(ID_PFR2_EL1), + AA32_ID_WRITABLE(ID_PFR2_EL1), ID_HIDDEN(ID_DFR1_EL1), - AA32_ID_SANITISED(ID_MMFR5_EL1), + AA32_ID_WRITABLE(ID_MMFR5_EL1), ID_UNALLOCATED(3,7), /* AArch64 ID registers */

1 day, 16 hours

2
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IAA Mobility 2025 Attendees Contacts!

by Grace Taylor

Hi, Great news — the final verified attendee list of the IAA Mobility 2025 is now available. This exclusive database includes 501,847 high-value contacts, complete with all last-minute registrations and walk-ins. For a short time, we’re offering an exclusive 30% discount, making this the perfect opportunity to strengthen your pipeline and accelerate your outreach. If you want to review the full details, simply reply “Send the Price” and I’ll send everything over immediately. Your list will be delivered within 48 hours. Don’t miss out on this limited offer — happy to assist you in getting started. Kind regards, Grace Taylor Sr. Demand Generation If you’d prefer not to receive these updates, reply “No.”

1 day, 17 hours

1
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[PATCH v3] powerpc, mm: Fix mprotect on book3s 32-bit

by Dave Vasilevsky

On 32-bit book3s with hash-MMUs, tlb_flush() was a no-op. This was unnoticed because all uses until recently were for unmaps, and thus handled by __tlb_remove_tlb_entry(). After commit 4a18419f71cd ("mm/mprotect: use mmu_gather") in kernel 5.19, tlb_gather_mmu() started being used for mprotect as well. This caused mprotect to simply not work on these machines: int *ptr = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0); *ptr = 1; // force HPTE to be created mprotect(ptr, 4096, PROT_READ); *ptr = 2; // should segfault, but succeeds Fixed by making tlb_flush() actually flush TLB pages. This finally agrees with the behaviour of boot3s64's tlb_flush(). Fixes: 4a18419f71cd ("mm/mprotect: use mmu_gather") Cc: stable(a)vger.kernel.org Reviewed-by: Christophe Leroy <christophe.leroy(a)csgroup.eu> Reviewed-by: Ritesh Harjani (IBM) <ritesh.list(a)gmail.com> Signed-off-by: Dave Vasilevsky <dave(a)vasilevsky.ca> --- Changes in v3: - Fix formatting - Link to v2: https://lore.kernel.org/r/20251111-vasi-mprotect-g3-v2-1-881c94afbc42@vasil… Changes in v2: - Flush entire TLB if full mm is requested. - Link to v1: https://lore.kernel.org/r/20251027-vasi-mprotect-g3-v1-1-3c5187085f9a@vasil… --- arch/powerpc/include/asm/book3s/32/tlbflush.h | 5 ++++- arch/powerpc/mm/book3s32/tlb.c | 9 +++++++++ 2 files changed, 13 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/include/asm/book3s/32/tlbflush.h b/arch/powerpc/include/asm/book3s/32/tlbflush.h index e43534da5207aa3b0cb3c07b78e29b833c141f3f..4be2200a3c7e1e8307f5ce1f1d5d28047429c106 100644 --- a/arch/powerpc/include/asm/book3s/32/tlbflush.h +++ b/arch/powerpc/include/asm/book3s/32/tlbflush.h @@ -11,6 +11,7 @@ void hash__flush_tlb_mm(struct mm_struct *mm); void hash__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr); void hash__flush_range(struct mm_struct *mm, unsigned long start, unsigned long end); +void hash__flush_gather(struct mmu_gather *tlb); #ifdef CONFIG_SMP void _tlbie(unsigned long address); @@ -29,7 +30,9 @@ void _tlbia(void); static inline void tlb_flush(struct mmu_gather *tlb) { /* 603 needs to flush the whole TLB here since it doesn't use a hash table. */ - if (!mmu_has_feature(MMU_FTR_HPTE_TABLE)) + if (mmu_has_feature(MMU_FTR_HPTE_TABLE)) + hash__flush_gather(tlb); + else _tlbia(); } diff --git a/arch/powerpc/mm/book3s32/tlb.c b/arch/powerpc/mm/book3s32/tlb.c index 9ad6b56bfec96e989b96f027d075ad5812500854..e54a7b0112322e5818d80facd2e3c7722e6dd520 100644 --- a/arch/powerpc/mm/book3s32/tlb.c +++ b/arch/powerpc/mm/book3s32/tlb.c @@ -105,3 +105,12 @@ void hash__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr) flush_hash_pages(mm->context.id, vmaddr, pmd_val(*pmd), 1); } EXPORT_SYMBOL(hash__flush_tlb_page); + +void hash__flush_gather(struct mmu_gather *tlb) +{ + if (tlb->fullmm || tlb->need_flush_all) + hash__flush_tlb_mm(tlb->mm); + else + hash__flush_range(tlb->mm, tlb->start, tlb->end); +} +EXPORT_SYMBOL(hash__flush_gather); --- base-commit: 24172e0d79900908cf5ebf366600616d29c9b417 change-id: 20251027-vasi-mprotect-g3-f8f5278d4140 Best regards, -- Dave Vasilevsky <dave(a)vasilevsky.ca>

1 day, 19 hours

2
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[PATCH] net: dsa: Fix error handling in dsa_port_parse_of

by Ma Ke

When of_find_net_device_by_node() successfully acquires a reference to a network device but the subsequent call to dsa_port_parse_cpu() fails, dsa_port_parse_of() returns without releasing the reference count on the network device. of_find_net_device_by_node() increments the reference count of the returned structure, which should be balanced with a corresponding put_device() when the reference is no longer needed. Found by code review. Cc: stable(a)vger.kernel.org Fixes: 6ca80638b90c ("net: dsa: Use conduit and user terms") Signed-off-by: Ma Ke <make24(a)iscas.ac.cn> --- net/dsa/dsa.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index 5b01a0e43ebe..632e0d716d62 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -1246,6 +1246,7 @@ static int dsa_port_parse_of(struct dsa_port *dp, struct device_node *dn) struct device_node *ethernet = of_parse_phandle(dn, "ethernet", 0); const char *name = of_get_property(dn, "label", NULL); bool link = of_property_read_bool(dn, "link"); + int err; dp->dn = dn; @@ -1259,7 +1260,13 @@ static int dsa_port_parse_of(struct dsa_port *dp, struct device_node *dn) return -EPROBE_DEFER; user_protocol = of_get_property(dn, "dsa-tag-protocol", NULL); - return dsa_port_parse_cpu(dp, conduit, user_protocol); + err = dsa_port_parse_cpu(dp, conduit, user_protocol); + if (err) { + put_device(conduit); + return err; + } + + return 0; } if (link) -- 2.17.1

1 day, 20 hours

5
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[PATCH v2] mm/memfd: fix information leak in hugetlb folios

by Deepanshu Kartikey

When allocating hugetlb folios for memfd, three initialization steps are missing: 1. Folios are not zeroed, leading to kernel memory disclosure to userspace 2. Folios are not marked uptodate before adding to page cache 3. hugetlb_fault_mutex is not taken before hugetlb_add_to_page_cache() The memfd allocation path bypasses the normal page fault handler (hugetlb_no_page) which would handle all of these initialization steps. This is problematic especially for udmabuf use cases where folios are pinned and directly accessed by userspace via DMA. Fix by matching the initialization pattern used in hugetlb_no_page(): - Zero the folio using folio_zero_user() which is optimized for huge pages - Mark it uptodate with folio_mark_uptodate() - Take hugetlb_fault_mutex before adding to page cache to prevent races The folio_zero_user() change also fixes a potential security issue where uninitialized kernel memory could be disclosed to userspace through read() or mmap() operations on the memfd. Reported-by: syzbot+f64019ba229e3a5c411b(a)syzkaller.appspotmail.com Link: https://lore.kernel.org/all/20251112031631.2315651-1-kartikey406@gmail.com/ [v1] Closes: https://syzkaller.appspot.com/bug?extid=f64019ba229e3a5c411b Fixes: 89c1905d9c14 ("mm/gup: introduce memfd_pin_folios() for pinning memfd folios") Cc: stable(a)vger.kernel.org Suggested-by: Oscar Salvador <osalvador(a)suse.de> Suggested-by: David Hildenbrand <david(a)redhat.com> Tested-by: syzbot+f64019ba229e3a5c411b(a)syzkaller.appspotmail.com Signed-off-by: Deepanshu Kartikey <kartikey406(a)gmail.com> --- v1 -> v2: - Use folio_zero_user() instead of folio_zero_range() (optimized for huge pages) - Add folio_mark_uptodate() before adding to page cache - Add hugetlb_fault_mutex locking around hugetlb_add_to_page_cache() - Add Fixes: tag and Cc: stable for backporting - Add Suggested-by: tags for Oscar and David --- mm/memfd.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/mm/memfd.c b/mm/memfd.c index 1d109c1acf21..d32eef58d154 100644 --- a/mm/memfd.c +++ b/mm/memfd.c @@ -96,9 +96,36 @@ struct folio *memfd_alloc_folio(struct file *memfd, pgoff_t idx) NULL, gfp_mask); if (folio) { + u32 hash; + + /* + * Zero the folio to prevent information leaks to userspace. + * Use folio_zero_user() which is optimized for huge/gigantic + * pages. Pass 0 as addr_hint since this is not a faulting path + * and we don't have a user virtual address yet. + */ + folio_zero_user(folio, 0); + + /* + * Mark the folio uptodate before adding to page cache, + * as required by filemap.c and other hugetlb paths. + */ + __folio_mark_uptodate(folio); + + /* + * Serialize hugepage allocation and instantiation to prevent + * races with concurrent allocations, as required by all other + * callers of hugetlb_add_to_page_cache(). + */ + hash = hugetlb_fault_mutex_hash(memfd->f_mapping, idx); + mutex_lock(&hugetlb_fault_mutex_table[hash]); + err = hugetlb_add_to_page_cache(folio, memfd->f_mapping, idx); + + mutex_unlock(&hugetlb_fault_mutex_table[hash]); + if (err) { folio_put(folio); goto err_unresv; -- 2.43.0

1 day, 21 hours

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[tip: timers/urgent] timers: Fix NULL function pointer race in timer_shutdown_sync()

by tip-bot2 for Yipeng Zou

The following commit has been merged into the timers/urgent branch of tip: Commit-ID: 20739af07383e6eb1ec59dcd70b72ebfa9ac362c Gitweb: https://git.kernel.org/tip/20739af07383e6eb1ec59dcd70b72ebfa9ac362c Author: Yipeng Zou <zouyipeng(a)huawei.com> AuthorDate: Sat, 22 Nov 2025 09:39:42 Committer: Thomas Gleixner <tglx(a)linutronix.de> CommitterDate: Sat, 22 Nov 2025 22:55:26 +01:00 timers: Fix NULL function pointer race in timer_shutdown_sync() There is a race condition between timer_shutdown_sync() and timer expiration that can lead to hitting a WARN_ON in expire_timers(). The issue occurs when timer_shutdown_sync() clears the timer function to NULL while the timer is still running on another CPU. The race scenario looks like this: CPU0 CPU1 <SOFTIRQ> lock_timer_base() expire_timers() base->running_timer = timer; unlock_timer_base() [call_timer_fn enter] mod_timer() ... timer_shutdown_sync() lock_timer_base() // For now, will not detach the timer but only clear its function to NULL if (base->running_timer != timer) ret = detach_if_pending(timer, base, true); if (shutdown) timer->function = NULL; unlock_timer_base() [call_timer_fn exit] lock_timer_base() base->running_timer = NULL; unlock_timer_base() ... // Now timer is pending while its function set to NULL. // next timer trigger <SOFTIRQ> expire_timers() WARN_ON_ONCE(!fn) // hit ... lock_timer_base() // Now timer will detach if (base->running_timer != timer) ret = detach_if_pending(timer, base, true); if (shutdown) timer->function = NULL; unlock_timer_base() The problem is that timer_shutdown_sync() clears the timer function regardless of whether the timer is currently running. This can leave a pending timer with a NULL function pointer, which triggers the WARN_ON_ONCE(!fn) check in expire_timers(). Fix this by only clearing the timer function when actually detaching the timer. If the timer is running, leave the function pointer intact, which is safe because the timer will be properly detached when it finishes running. Fixes: 0cc04e80458a ("timers: Add shutdown mechanism to the internal functions") Signed-off-by: Yipeng Zou <zouyipeng(a)huawei.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: stable(a)vger.kernel.org Link: https://patch.msgid.link/20251122093942.301559-1-zouyipeng@huawei.com --- kernel/time/timer.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/kernel/time/timer.c b/kernel/time/timer.c index 553fa46..d5ebb1d 100644 --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1458,10 +1458,11 @@ static int __try_to_del_timer_sync(struct timer_list *timer, bool shutdown) base = lock_timer_base(timer, &flags); - if (base->running_timer != timer) + if (base->running_timer != timer) { ret = detach_if_pending(timer, base, true); - if (shutdown) - timer->function = NULL; + if (shutdown) + timer->function = NULL; + } raw_spin_unlock_irqrestore(&base->lock, flags);

2 days, 5 hours

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[PATCH REGRESSION] drm/panel: simple: restore connector_type fallback

by Ludovic Desroches

The switch from devm_kzalloc() + drm_panel_init() to devm_drm_panel_alloc() introduced a regression. Several panel descriptors do not set connector_type. For those panels, panel_simple_probe() used to compute a connector type (currently DPI as a fallback) and pass that value to drm_panel_init(). After the conversion to devm_drm_panel_alloc(), the call unconditionally used desc->connector_type instead, ignoring the computed fallback and potentially passing DRM_MODE_CONNECTOR_Unknown, which drm_panel_bridge_add() does not allow. Move the connector_type validation / fallback logic before the devm_drm_panel_alloc() call and pass the computed connector_type to devm_drm_panel_alloc(), so panels without an explicit connector_type once again get the DPI default. Signed-off-by: Ludovic Desroches <ludovic.desroches(a)microchip.com> Fixes: de04bb0089a9 ("drm/panel/panel-simple: Use the new allocation in place of devm_kzalloc()") --- Hi, I am not sure whether this regression has already been reported or addressed. If it has, please feel free to drop this patch. --- drivers/gpu/drm/panel/panel-simple.c | 86 ++++++++++++++++++------------------ 1 file changed, 43 insertions(+), 43 deletions(-) diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c index da6b71b70a463400fcc45006788f87e97b0c148c..dc41789f6a53c78b928ff39291ab7219a2d835dd 100644 --- a/drivers/gpu/drm/panel/panel-simple.c +++ b/drivers/gpu/drm/panel/panel-simple.c @@ -623,49 +623,6 @@ static struct panel_simple *panel_simple_probe(struct device *dev) if (IS_ERR(desc)) return ERR_CAST(desc); - panel = devm_drm_panel_alloc(dev, struct panel_simple, base, - &panel_simple_funcs, desc->connector_type); - if (IS_ERR(panel)) - return ERR_CAST(panel); - - panel->desc = desc; - - panel->supply = devm_regulator_get(dev, "power"); - if (IS_ERR(panel->supply)) - return ERR_CAST(panel->supply); - - panel->enable_gpio = devm_gpiod_get_optional(dev, "enable", - GPIOD_OUT_LOW); - if (IS_ERR(panel->enable_gpio)) - return dev_err_cast_probe(dev, panel->enable_gpio, - "failed to request GPIO\n"); - - err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation); - if (err) { - dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); - return ERR_PTR(err); - } - - ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0); - if (ddc) { - panel->ddc = of_find_i2c_adapter_by_node(ddc); - of_node_put(ddc); - - if (!panel->ddc) - return ERR_PTR(-EPROBE_DEFER); - } - - if (!of_device_is_compatible(dev->of_node, "panel-dpi") && - !of_get_display_timing(dev->of_node, "panel-timing", &dt)) - panel_simple_parse_panel_timing_node(dev, panel, &dt); - - if (desc->connector_type == DRM_MODE_CONNECTOR_LVDS) { - /* Optional data-mapping property for overriding bus format */ - err = panel_simple_override_nondefault_lvds_datamapping(dev, panel); - if (err) - goto free_ddc; - } - connector_type = desc->connector_type; /* Catch common mistakes for panels. */ switch (connector_type) { @@ -720,6 +677,49 @@ static struct panel_simple *panel_simple_probe(struct device *dev) break; } + panel = devm_drm_panel_alloc(dev, struct panel_simple, base, + &panel_simple_funcs, connector_type); + if (IS_ERR(panel)) + return ERR_CAST(panel); + + panel->desc = desc; + + panel->supply = devm_regulator_get(dev, "power"); + if (IS_ERR(panel->supply)) + return ERR_CAST(panel->supply); + + panel->enable_gpio = devm_gpiod_get_optional(dev, "enable", + GPIOD_OUT_LOW); + if (IS_ERR(panel->enable_gpio)) + return dev_err_cast_probe(dev, panel->enable_gpio, + "failed to request GPIO\n"); + + err = of_drm_get_panel_orientation(dev->of_node, &panel->orientation); + if (err) { + dev_err(dev, "%pOF: failed to get orientation %d\n", dev->of_node, err); + return ERR_PTR(err); + } + + ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0); + if (ddc) { + panel->ddc = of_find_i2c_adapter_by_node(ddc); + of_node_put(ddc); + + if (!panel->ddc) + return ERR_PTR(-EPROBE_DEFER); + } + + if (!of_device_is_compatible(dev->of_node, "panel-dpi") && + !of_get_display_timing(dev->of_node, "panel-timing", &dt)) + panel_simple_parse_panel_timing_node(dev, panel, &dt); + + if (desc->connector_type == DRM_MODE_CONNECTOR_LVDS) { + /* Optional data-mapping property for overriding bus format */ + err = panel_simple_override_nondefault_lvds_datamapping(dev, panel); + if (err) + goto free_ddc; + } + dev_set_drvdata(dev, panel); /* --- base-commit: 88cbd8ac379cf5ce68b7efcfd4d1484a6871ee0b change-id: 20251121-lcd_panel_connector_type_fix-f00fe3766a42 Best regards, -- Ludovic Desroches <ludovic.desroches(a)microchip.com>

2 days, 6 hours

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Urgent Financial Management Opportunity.

by Dr. Malik

2 days, 11 hours

1
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