This is the start of the stable review cycle for the 6.1.151 release.
There are 101 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 Wed, 10 Sep 2025 15:18:27 +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-6.1.151-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 6.1.151-rc2
Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
cpufreq: intel_pstate: Check turbo_is_disabled() in store_no_turbo()
Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
cpufreq: intel_pstate: Read global.no_turbo under READ_ONCE()
Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
cpufreq: intel_pstate: Rearrange show_no_turbo() and store_no_turbo()
Aaron Kling <webgeek1234(a)gmail.com>
spi: tegra114: Use value to check for invalid delays
Qiu-ji Chen <chenqiuji666(a)gmail.com>
dmaengine: mediatek: Fix a flag reuse error in mtk_cqdma_tx_status()
yangshiguang <yangshiguang(a)xiaomi.com>
mm: slub: avoid wake up kswapd in set_track_prepare
Chengming Zhou <zhouchengming(a)bytedance.com>
slub: Reflow ___slab_alloc()
Vlastimil Babka <vbabka(a)suse.cz>
mm, slub: refactor free debug processing
zhang jiao <zhangjiao2(a)cmss.chinamobile.com>
tools: gpio: remove the include directory on make clean
zhangjiao <zhangjiao2(a)cmss.chinamobile.com>
tools: gpio: rm .*.cmd on make clean
Colin Ian King <colin.i.king(a)gmail.com>
drm/amd/amdgpu: Fix missing error return on kzalloc failure
Hawking Zhang <Hawking.Zhang(a)amd.com>
drm/amdgpu: Replace DRM_* with dev_* in amdgpu_psp.c
Mario Limonciello <mario.limonciello(a)amd.com>
drm/amd: Make flashing messages quieter
Lijo Lazar <lijo.lazar(a)amd.com>
drm/amdgpu: Skip TMR allocation if not required
Srinivasan Shanmugam <srinivasan.shanmugam(a)amd.com>
drm/amd/amdgpu: Fix style problems in amdgpu_psp.c
Tao Zhou <tao.zhou1(a)amd.com>
drm/amdgpu: remove the check of init status in psp_ras_initialize
Candice Li <candice.li(a)amd.com>
drm/amdgpu: Optimize RAS TA initialization and TA unload funcs
Michael Walle <mwalle(a)kernel.org>
drm/bridge: ti-sn65dsi86: fix REFCLK setting
Larisa Grigore <larisa.grigore(a)nxp.com>
spi: spi-fsl-lpspi: Reset FIFO and disable module on transfer abort
Larisa Grigore <larisa.grigore(a)nxp.com>
spi: spi-fsl-lpspi: Set correct chip-select polarity bit
Larisa Grigore <larisa.grigore(a)nxp.com>
spi: spi-fsl-lpspi: Fix transmissions when using CONT
Vadim Pasternak <vadimp(a)nvidia.com>
hwmon: mlxreg-fan: Prevent fans from getting stuck at 0 RPM
Wentao Liang <vulab(a)iscas.ac.cn>
pcmcia: Add error handling for add_interval() in do_validate_mem()
Chen Ni <nichen(a)iscas.ac.cn>
pcmcia: omap: Add missing check for platform_get_resource
Alex Deucher <alexander.deucher(a)amd.com>
Revert "drm/amdgpu: Avoid extra evict-restore process."
Aaron Erhardt <aer(a)tuxedocomputers.com>
ALSA: hda/realtek: Fix headset mic for TongFang X6[AF]R5xxY
Takashi Iwai <tiwai(a)suse.de>
ALSA: hda/hdmi: Add pin fix for another HP EliteDesk 800 G4 model
Alex Hung <alex.hung(a)amd.com>
drm/amd/display: Check link_res->hpo_dp_link_enc before using it
Amir Goldstein <amir73il(a)gmail.com>
fs: relax assertions on failure to encode file handles
Stefan Binding <sbinding(a)opensource.cirrus.com>
ALSA: hda/realtek: Add support for HP Agusta using CS35L41 HDA
Srinivas Pandruvada <srinivas.pandruvada(a)linux.intel.com>
cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode
Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
cpufreq: intel_pstate: Do not update global.turbo_disabled after initialization
Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
cpufreq: intel_pstate: Fold intel_pstate_max_within_limits() into caller
Srinivas Pandruvada <srinivas.pandruvada(a)linux.intel.com>
cpufreq: intel_pstate: Revise global turbo disable check
Aaron Kling <webgeek1234(a)gmail.com>
spi: tegra114: Don't fail set_cs_timing when delays are zero
Alexander Danilenko <al.b.danilenko(a)gmail.com>
spi: tegra114: Remove unnecessary NULL-pointer checks
Ronak Doshi <ronak.doshi(a)broadcom.com>
vmxnet3: update MTU after device quiesce
Jakob Unterwurzacher <jakobunt(a)gmail.com>
net: dsa: microchip: linearize skb for tail-tagging switches
Pieter Van Trappen <pieter.van.trappen(a)cern.ch>
net: dsa: microchip: update tag_ksz masks for KSZ9477 family
Chris Chiu <chris.chiu(a)canonical.com>
ALSA: hda/realtek - Add new HP ZBook laptop with micmute led fixup
Qiu-ji Chen <chenqiuji666(a)gmail.com>
dmaengine: mediatek: Fix a possible deadlock error in mtk_cqdma_tx_status()
Christophe JAILLET <christophe.jaillet(a)wanadoo.fr>
i2c: designware: Fix an error handling path in i2c_dw_pci_probe()
Luca Ceresoli <luca.ceresoli(a)bootlin.com>
iio: light: opt3001: fix deadlock due to concurrent flag access
David Lechner <dlechner(a)baylibre.com>
iio: chemical: pms7003: use aligned_s64 for timestamp
Josef Bacik <josef(a)toxicpanda.com>
btrfs: adjust subpage bit start based on sectorsize
Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
cpufreq/sched: Explicitly synchronize limits_changed flag handling
Jonathan Currier <dullfire(a)yahoo.com>
PCI/MSI: Add an option to write MSIX ENTRY_DATA before any reads
Li Qiong <liqiong(a)nfschina.com>
mm/slub: avoid accessing metadata when pointer is invalid in object_err()
Lad Prabhakar <prabhakar.mahadev-lad.rj(a)bp.renesas.com>
net: pcs: rzn1-miic: Correct MODCTRL register offset
Vitaly Lifshits <vitaly.lifshits(a)intel.com>
e1000e: fix heap overflow in e1000_set_eeprom
Makar Semyonov <m.semenov(a)tssltd.ru>
cifs: prevent NULL pointer dereference in UTF16 conversion
Stanislav Fort <stanislav.fort(a)aisle.com>
batman-adv: fix OOB read/write in network-coding decode
John Evans <evans1210144(a)gmail.com>
scsi: lpfc: Fix buffer free/clear order in deferred receive path
Alex Deucher <alexander.deucher(a)amd.com>
drm/amdgpu: drop hw access in non-DC audio fini
Qianfeng Rong <rongqianfeng(a)vivo.com>
wifi: mwifiex: Initialize the chan_stats array to zero
wangzijie <wangzijie1(a)honor.com>
proc: fix missing pde_set_flags() for net proc files
Edward Adam Davis <eadavis(a)qq.com>
ocfs2: prevent release journal inode after journal shutdown
Harry Yoo <harry.yoo(a)oracle.com>
mm: move page table sync declarations to linux/pgtable.h
Harry Yoo <harry.yoo(a)oracle.com>
x86/mm/64: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings()
Ma Ke <make24(a)iscas.ac.cn>
pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()
Miaoqian Lin <linmq006(a)gmail.com>
ACPI/IORT: Fix memory leak in iort_rmr_alloc_sids()
Cryolitia PukNgae <cryolitia(a)uniontech.com>
ALSA: usb-audio: Add mute TLV for playback volumes on some devices
Horatiu Vultur <horatiu.vultur(a)microchip.com>
phy: mscc: Stop taking ts_lock for tx_queue and use its own lock
Kuniyuki Iwashima <kuniyu(a)google.com>
selftest: net: Fix weird setsockopt() in bind_bhash.c.
Qingfang Deng <dqfext(a)gmail.com>
ppp: fix memory leak in pad_compress_skb
Wang Liang <wangliang74(a)huawei.com>
net: atm: fix memory leak in atm_register_sysfs when device_register fail
Eric Dumazet <edumazet(a)google.com>
ax25: properly unshare skbs in ax25_kiss_rcv()
Alok Tiwari <alok.a.tiwari(a)oracle.com>
mctp: return -ENOPROTOOPT for unknown getsockopt options
Mahanta Jambigi <mjambigi(a)linux.ibm.com>
net/smc: Remove validation of reserved bits in CLC Decline message
Dan Carpenter <dan.carpenter(a)linaro.org>
ipv4: Fix NULL vs error pointer check in inet_blackhole_dev_init()
Rosen Penev <rosenp(a)gmail.com>
net: thunder_bgx: decrement cleanup index before use
Rosen Penev <rosenp(a)gmail.com>
net: thunder_bgx: add a missing of_node_put
Dan Carpenter <dan.carpenter(a)linaro.org>
wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result()
Dan Carpenter <dan.carpenter(a)linaro.org>
wifi: libertas: cap SSID len in lbs_associate()
Dan Carpenter <dan.carpenter(a)linaro.org>
wifi: cw1200: cap SSID length in cw1200_do_join()
Felix Fietkau <nbd(a)nbd.name>
net: ethernet: mtk_eth_soc: fix tx vlan tag for llc packets
Zhen Ni <zhen.ni(a)easystack.cn>
i40e: Fix potential invalid access when MAC list is empty
Liu Jian <liujian56(a)huawei.com>
net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()
Sean Anderson <sean.anderson(a)linux.dev>
net: macb: Fix tx_ptr_lock locking
Fabian Bläse <fabian(a)blaese.de>
icmp: fix icmp_ndo_send address translation for reply direction
Miaoqian Lin <linmq006(a)gmail.com>
mISDN: Fix memory leak in dsp_hwec_enable()
Alok Tiwari <alok.a.tiwari(a)oracle.com>
xirc2ps_cs: fix register access when enabling FullDuplex
Kuniyuki Iwashima <kuniyu(a)google.com>
Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen()
Phil Sutter <phil(a)nwl.cc>
netfilter: conntrack: helper: Replace -EEXIST by -EBUSY
Wang Liang <wangliang74(a)huawei.com>
netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm
Dmitry Antipov <dmantipov(a)yandex.ru>
wifi: cfg80211: fix use-after-free in cmp_bss()
Marek Vasut <marek.vasut(a)mailbox.org>
arm64: dts: imx8mp: Fix missing microSD slot vqmmc on DH electronics i.MX8M Plus DHCOM
Sungbae Yoo <sungbaey(a)nvidia.com>
tee: optee: ffa: fix a typo of "optee_ffa_api_is_compatible"
Peter Robinson <pbrobinson(a)gmail.com>
arm64: dts: rockchip: Add vcc-supply to SPI flash on rk3399-pinebook-pro
Pei Xiao <xiaopei01(a)kylinos.cn>
tee: fix NULL pointer dereference in tee_shm_put
Jiufei Xue <jiufei.xue(a)samsung.com>
fs: writeback: fix use-after-free in __mark_inode_dirty()
Yang Li <yang.li(a)amlogic.com>
Bluetooth: hci_sync: Avoid adding default advertising on startup
Timur Kristóf <timur.kristof(a)gmail.com>
drm/amd/display: Don't warn when missing DCE encoder caps
Lubomir Rintel <lkundrak(a)v3.sk>
cdc_ncm: Flag Intel OEM version of Fibocom L850-GL as WWAN
Filipe Manana <fdmanana(a)suse.com>
btrfs: avoid load/store tearing races when checking if an inode was logged
Filipe Manana <fdmanana(a)suse.com>
btrfs: fix race between setting last_dir_index_offset and inode logging
Filipe Manana <fdmanana(a)suse.com>
btrfs: fix race between logging inode and checking if it was logged before
Daniel Borkmann <daniel(a)iogearbox.net>
bpf: Fix oob access in cgroup local storage
Daniel Borkmann <daniel(a)iogearbox.net>
bpf: Move bpf map owner out of common struct
Daniel Borkmann <daniel(a)iogearbox.net>
bpf: Move cgroup iterator helpers to bpf.h
Daniel Borkmann <daniel(a)iogearbox.net>
bpf: Add cookie object to bpf maps
-------------
Diffstat:
Makefile | 4 +-
.../arm64/boot/dts/freescale/imx8mp-dhcom-som.dtsi | 1 +
.../boot/dts/rockchip/rk3399-pinebook-pro.dts | 1 +
arch/x86/include/asm/pgtable_64_types.h | 3 +
arch/x86/mm/init_64.c | 18 ++
drivers/acpi/arm64/iort.c | 4 +-
drivers/cpufreq/intel_pstate.c | 126 ++++-------
drivers/dma/mediatek/mtk-cqdma.c | 10 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 235 +++++++++++----------
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6 +-
drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 5 -
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 5 -
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 5 -
drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 5 -
.../gpu/drm/amd/display/dc/dce/dce_link_encoder.c | 8 +-
.../gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c | 7 +
drivers/gpu/drm/bridge/ti-sn65dsi86.c | 11 +
drivers/hwmon/mlxreg-fan.c | 5 +-
drivers/i2c/busses/i2c-designware-pcidrv.c | 4 +-
drivers/iio/chemical/pms7003.c | 5 +-
drivers/iio/light/opt3001.c | 5 +-
drivers/isdn/mISDN/dsp_hwec.c | 6 +-
drivers/net/ethernet/cadence/macb_main.c | 28 +--
drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 20 +-
drivers/net/ethernet/intel/e1000e/ethtool.c | 10 +-
drivers/net/ethernet/intel/i40e/i40e_client.c | 4 +-
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 10 +-
drivers/net/ethernet/xircom/xirc2ps_cs.c | 2 +-
drivers/net/pcs/pcs-rzn1-miic.c | 2 +-
drivers/net/phy/mscc/mscc_ptp.c | 18 +-
drivers/net/ppp/ppp_generic.c | 6 +-
drivers/net/usb/cdc_ncm.c | 7 +
drivers/net/vmxnet3/vmxnet3_drv.c | 5 +-
drivers/net/wireless/marvell/libertas/cfg.c | 9 +-
drivers/net/wireless/marvell/mwifiex/cfg80211.c | 5 +-
drivers/net/wireless/marvell/mwifiex/main.c | 4 +-
drivers/net/wireless/st/cw1200/sta.c | 2 +-
drivers/pci/msi/msi.c | 3 +
drivers/pcmcia/omap_cf.c | 2 +
drivers/pcmcia/rsrc_iodyn.c | 3 +
drivers/pcmcia/rsrc_nonstatic.c | 4 +-
drivers/scsi/lpfc/lpfc_nvmet.c | 10 +-
drivers/spi/spi-fsl-lpspi.c | 15 +-
drivers/spi/spi-tegra114.c | 18 +-
drivers/tee/optee/ffa_abi.c | 4 +-
drivers/tee/tee_shm.c | 6 +-
fs/btrfs/btrfs_inode.h | 2 +-
fs/btrfs/extent_io.c | 2 +-
fs/btrfs/inode.c | 1 +
fs/btrfs/tree-log.c | 78 ++++---
fs/fs-writeback.c | 9 +-
fs/notify/fdinfo.c | 4 +-
fs/ocfs2/inode.c | 3 +
fs/overlayfs/copy_up.c | 5 +-
fs/proc/generic.c | 38 ++--
fs/smb/client/cifs_unicode.c | 3 +
include/linux/bpf-cgroup.h | 5 -
include/linux/bpf.h | 60 ++++--
include/linux/pci.h | 2 +
include/linux/pgtable.h | 16 ++
include/linux/vmalloc.h | 16 --
kernel/bpf/core.c | 50 +++--
kernel/bpf/syscall.c | 19 +-
kernel/sched/cpufreq_schedutil.c | 28 ++-
mm/slub.c | 216 ++++++++++---------
net/atm/resources.c | 6 +-
net/ax25/ax25_in.c | 4 +
net/batman-adv/network-coding.c | 7 +-
net/bluetooth/hci_sync.c | 2 +-
net/bluetooth/l2cap_sock.c | 3 +
net/bridge/br_netfilter_hooks.c | 3 -
net/dsa/tag_ksz.c | 22 +-
net/ipv4/devinet.c | 7 +-
net/ipv4/icmp.c | 6 +-
net/ipv6/ip6_icmp.c | 6 +-
net/mctp/af_mctp.c | 2 +-
net/netfilter/nf_conntrack_helper.c | 4 +-
net/smc/smc_clc.c | 2 -
net/smc/smc_ib.c | 3 +
net/wireless/scan.c | 3 +-
net/wireless/sme.c | 5 +-
sound/pci/hda/patch_hdmi.c | 1 +
sound/pci/hda/patch_realtek.c | 5 +
sound/usb/mixer_quirks.c | 2 +
tools/gpio/Makefile | 4 +-
tools/testing/selftests/net/bind_bhash.c | 4 +-
86 files changed, 774 insertions(+), 560 deletions(-)
This is the start of the stable review cycle for the 5.15.192 release.
There are 64 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 Tue, 09 Sep 2025 19:55:53 +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/v5.x/stable-review/patch-5.15.192-r…
or in the git tree and branch at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.15.y
and the diffstat can be found below.
thanks,
greg k-h
-------------
Pseudo-Shortlog of commits:
Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Linux 5.15.192-rc1
Qiu-ji Chen <chenqiuji666(a)gmail.com>
dmaengine: mediatek: Fix a flag reuse error in mtk_cqdma_tx_status()
Aaron Kling <webgeek1234(a)gmail.com>
spi: tegra114: Use value to check for invalid delays
Taniya Das <quic_tdas(a)quicinc.com>
clk: qcom: gdsc: Set retain_ff before moving to HW CTRL
Ian Rogers <irogers(a)google.com>
perf bpf-event: Fix use-after-free in synthesis
Michael Walle <mwalle(a)kernel.org>
drm/bridge: ti-sn65dsi86: fix REFCLK setting
Larisa Grigore <larisa.grigore(a)nxp.com>
spi: spi-fsl-lpspi: Reset FIFO and disable module on transfer abort
Larisa Grigore <larisa.grigore(a)nxp.com>
spi: spi-fsl-lpspi: Set correct chip-select polarity bit
Larisa Grigore <larisa.grigore(a)nxp.com>
spi: spi-fsl-lpspi: Fix transmissions when using CONT
Wentao Liang <vulab(a)iscas.ac.cn>
pcmcia: Add error handling for add_interval() in do_validate_mem()
Takashi Iwai <tiwai(a)suse.de>
ALSA: hda/hdmi: Add pin fix for another HP EliteDesk 800 G4 model
Li Qiong <liqiong(a)nfschina.com>
mm/slub: avoid accessing metadata when pointer is invalid in object_err()
Kees Cook <kees(a)kernel.org>
randstruct: gcc-plugin: Fix attribute addition
Kees Cook <kees(a)kernel.org>
randstruct: gcc-plugin: Remove bogus void member
Gabor Juhos <j4g8y7(a)gmail.com>
arm64: dts: marvell: uDPU: define pinctrl state for alarm LEDs
Ronak Doshi <ronak.doshi(a)broadcom.com>
vmxnet3: update MTU after device quiesce
Jakob Unterwurzacher <jakobunt(a)gmail.com>
net: dsa: microchip: linearize skb for tail-tagging switches
Pieter Van Trappen <pieter.van.trappen(a)cern.ch>
net: dsa: microchip: update tag_ksz masks for KSZ9477 family
Qiu-ji Chen <chenqiuji666(a)gmail.com>
dmaengine: mediatek: Fix a possible deadlock error in mtk_cqdma_tx_status()
Hyejeong Choi <hjeong.choi(a)samsung.com>
dma-buf: insert memory barrier before updating num_fences
Emanuele Ghidoli <emanuele.ghidoli(a)toradex.com>
gpio: pca953x: fix IRQ storm on system wake up
Luca Ceresoli <luca.ceresoli(a)bootlin.com>
iio: light: opt3001: fix deadlock due to concurrent flag access
David Lechner <dlechner(a)baylibre.com>
iio: chemical: pms7003: use aligned_s64 for timestamp
Aaron Kling <webgeek1234(a)gmail.com>
spi: tegra114: Don't fail set_cs_timing when delays are zero
Alexander Danilenko <al.b.danilenko(a)gmail.com>
spi: tegra114: Remove unnecessary NULL-pointer checks
Sean Christopherson <seanjc(a)google.com>
KVM: x86: Take irqfds.lock when adding/deleting IRQ bypass producer
Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
cpufreq/sched: Explicitly synchronize limits_changed flag handling
Jann Horn <jannh(a)google.com>
mm/khugepaged: fix ->anon_vma race
Vitaly Lifshits <vitaly.lifshits(a)intel.com>
e1000e: fix heap overflow in e1000_set_eeprom
Stanislav Fort <stanislav.fort(a)aisle.com>
batman-adv: fix OOB read/write in network-coding decode
John Evans <evans1210144(a)gmail.com>
scsi: lpfc: Fix buffer free/clear order in deferred receive path
Alex Deucher <alexander.deucher(a)amd.com>
drm/amdgpu: drop hw access in non-DC audio fini
Qianfeng Rong <rongqianfeng(a)vivo.com>
wifi: mwifiex: Initialize the chan_stats array to zero
Harry Yoo <harry.yoo(a)oracle.com>
mm: move page table sync declarations to linux/pgtable.h
Harry Yoo <harry.yoo(a)oracle.com>
x86/mm/64: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings()
Ma Ke <make24(a)iscas.ac.cn>
pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()
Cryolitia PukNgae <cryolitia(a)uniontech.com>
ALSA: usb-audio: Add mute TLV for playback volumes on some devices
Horatiu Vultur <horatiu.vultur(a)microchip.com>
phy: mscc: Stop taking ts_lock for tx_queue and use its own lock
Horatiu Vultur <horatiu.vultur(a)microchip.com>
net: phy: mscc: Fix memory leak when using one step timestamping
Kurt Kanzenbach <kurt(a)linutronix.de>
ptp: Add generic PTP is_sync() function
Qingfang Deng <dqfext(a)gmail.com>
ppp: fix memory leak in pad_compress_skb
Wang Liang <wangliang74(a)huawei.com>
net: atm: fix memory leak in atm_register_sysfs when device_register fail
Eric Dumazet <edumazet(a)google.com>
ax25: properly unshare skbs in ax25_kiss_rcv()
Dan Carpenter <dan.carpenter(a)linaro.org>
ipv4: Fix NULL vs error pointer check in inet_blackhole_dev_init()
Rosen Penev <rosenp(a)gmail.com>
net: thunder_bgx: decrement cleanup index before use
Rosen Penev <rosenp(a)gmail.com>
net: thunder_bgx: add a missing of_node_put
Dan Carpenter <dan.carpenter(a)linaro.org>
wifi: libertas: cap SSID len in lbs_associate()
Dan Carpenter <dan.carpenter(a)linaro.org>
wifi: cw1200: cap SSID length in cw1200_do_join()
Felix Fietkau <nbd(a)nbd.name>
net: ethernet: mtk_eth_soc: fix tx vlan tag for llc packets
Zhen Ni <zhen.ni(a)easystack.cn>
i40e: Fix potential invalid access when MAC list is empty
Fabian Bläse <fabian(a)blaese.de>
icmp: fix icmp_ndo_send address translation for reply direction
Miaoqian Lin <linmq006(a)gmail.com>
mISDN: Fix memory leak in dsp_hwec_enable()
Alok Tiwari <alok.a.tiwari(a)oracle.com>
xirc2ps_cs: fix register access when enabling FullDuplex
Kuniyuki Iwashima <kuniyu(a)google.com>
Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen()
Phil Sutter <phil(a)nwl.cc>
netfilter: conntrack: helper: Replace -EEXIST by -EBUSY
Wang Liang <wangliang74(a)huawei.com>
netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm
Dmitry Antipov <dmantipov(a)yandex.ru>
wifi: cfg80211: fix use-after-free in cmp_bss()
Peter Robinson <pbrobinson(a)gmail.com>
arm64: dts: rockchip: Add vcc-supply to SPI flash on rk3399-pinebook-pro
Pei Xiao <xiaopei01(a)kylinos.cn>
tee: fix NULL pointer dereference in tee_shm_put
Jiufei Xue <jiufei.xue(a)samsung.com>
fs: writeback: fix use-after-free in __mark_inode_dirty()
Timur Kristóf <timur.kristof(a)gmail.com>
drm/amd/display: Don't warn when missing DCE encoder caps
Daniel Borkmann <daniel(a)iogearbox.net>
bpf: Fix oob access in cgroup local storage
Daniel Borkmann <daniel(a)iogearbox.net>
bpf: Move bpf map owner out of common struct
Daniel Borkmann <daniel(a)iogearbox.net>
bpf: Move cgroup iterator helpers to bpf.h
Daniel Borkmann <daniel(a)iogearbox.net>
bpf: Add cookie object to bpf maps
-------------
Diffstat:
Makefile | 4 +-
arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts | 9 +-
.../boot/dts/rockchip/rk3399-pinebook-pro.dts | 1 +
arch/x86/include/asm/pgtable_64_types.h | 3 +
arch/x86/kvm/x86.c | 18 ++-
arch/x86/mm/init_64.c | 18 +++
drivers/clk/qcom/gdsc.c | 21 ++--
drivers/dma-buf/dma-resv.c | 5 +-
drivers/dma/mediatek/mtk-cqdma.c | 10 +-
drivers/gpio/gpio-pca953x.c | 5 +
drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 5 -
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 5 -
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 5 -
drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 5 -
.../gpu/drm/amd/display/dc/dce/dce_link_encoder.c | 8 +-
drivers/gpu/drm/bridge/ti-sn65dsi86.c | 11 ++
drivers/iio/chemical/pms7003.c | 5 +-
drivers/iio/light/opt3001.c | 5 +-
drivers/isdn/mISDN/dsp_hwec.c | 6 +-
drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 20 +--
drivers/net/ethernet/intel/e1000e/ethtool.c | 10 +-
drivers/net/ethernet/intel/i40e/i40e_client.c | 4 +-
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 10 +-
drivers/net/ethernet/xircom/xirc2ps_cs.c | 2 +-
drivers/net/phy/mscc/mscc_ptp.c | 34 +++---
drivers/net/ppp/ppp_generic.c | 6 +-
drivers/net/vmxnet3/vmxnet3_drv.c | 5 +-
drivers/net/wireless/marvell/libertas/cfg.c | 9 +-
drivers/net/wireless/marvell/mwifiex/cfg80211.c | 5 +-
drivers/net/wireless/marvell/mwifiex/main.c | 4 +-
drivers/net/wireless/st/cw1200/sta.c | 2 +-
drivers/pcmcia/rsrc_iodyn.c | 3 +
drivers/pcmcia/rsrc_nonstatic.c | 4 +-
drivers/scsi/lpfc/lpfc_nvmet.c | 10 +-
drivers/spi/spi-fsl-lpspi.c | 15 +--
drivers/spi/spi-tegra114.c | 18 ++-
drivers/tee/tee_shm.c | 6 +-
fs/fs-writeback.c | 9 +-
include/linux/bpf-cgroup.h | 5 -
include/linux/bpf.h | 134 ++++++++++++++++++---
include/linux/pgtable.h | 16 +++
include/linux/ptp_classify.h | 15 +++
include/linux/vmalloc.h | 16 ---
kernel/bpf/arraymap.c | 1 -
kernel/bpf/core.c | 83 ++++++++++---
kernel/bpf/syscall.c | 22 ++--
kernel/sched/cpufreq_schedutil.c | 28 ++++-
mm/khugepaged.c | 15 ++-
mm/slub.c | 7 +-
net/atm/resources.c | 6 +-
net/ax25/ax25_in.c | 4 +
net/batman-adv/network-coding.c | 7 +-
net/bluetooth/l2cap_sock.c | 3 +
net/bridge/br_netfilter_hooks.c | 3 -
net/core/ptp_classifier.c | 12 ++
net/dsa/tag_ksz.c | 22 +++-
net/ipv4/devinet.c | 7 +-
net/ipv4/icmp.c | 6 +-
net/ipv6/ip6_icmp.c | 6 +-
net/netfilter/nf_conntrack_helper.c | 4 +-
net/wireless/scan.c | 3 +-
scripts/gcc-plugins/gcc-common.h | 32 +++++
scripts/gcc-plugins/randomize_layout_plugin.c | 40 ++----
sound/pci/hda/patch_hdmi.c | 1 +
sound/usb/mixer_quirks.c | 2 +
tools/perf/util/bpf-event.c | 39 ++++--
66 files changed, 600 insertions(+), 264 deletions(-)
I'm announcing the release of the 6.1.151 kernel.
All users of the 6.1 kernel series must upgrade.
The updated 6.1.y git tree can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-6.1.y
and can be browsed at the normal kernel.org git web browser:
https://git.kernel.org/?p=linux/kernel/git/stable/linux-stable.git;a=summary
thanks,
greg k-h
------------
Makefile | 2
arch/arm64/boot/dts/freescale/imx8mp-dhcom-som.dtsi | 1
arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts | 1
arch/x86/include/asm/pgtable_64_types.h | 3
arch/x86/mm/init_64.c | 18 +
drivers/acpi/arm64/iort.c | 4
drivers/cpufreq/intel_pstate.c | 122 +++-----
drivers/dma/mediatek/mtk-cqdma.c | 10
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 235 +++++++++--------
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 6
drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 5
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 5
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 5
drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 5
drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c | 8
drivers/gpu/drm/amd/display/dc/link/link_hwss_hpo_dp.c | 7
drivers/gpu/drm/bridge/ti-sn65dsi86.c | 11
drivers/hwmon/mlxreg-fan.c | 5
drivers/i2c/busses/i2c-designware-pcidrv.c | 4
drivers/iio/chemical/pms7003.c | 5
drivers/iio/light/opt3001.c | 5
drivers/isdn/mISDN/dsp_hwec.c | 6
drivers/net/ethernet/cadence/macb_main.c | 28 +-
drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 20 -
drivers/net/ethernet/intel/e1000e/ethtool.c | 10
drivers/net/ethernet/intel/i40e/i40e_client.c | 4
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 10
drivers/net/ethernet/xircom/xirc2ps_cs.c | 2
drivers/net/pcs/pcs-rzn1-miic.c | 2
drivers/net/phy/mscc/mscc_ptp.c | 18 -
drivers/net/ppp/ppp_generic.c | 6
drivers/net/usb/cdc_ncm.c | 7
drivers/net/vmxnet3/vmxnet3_drv.c | 5
drivers/net/wireless/marvell/libertas/cfg.c | 9
drivers/net/wireless/marvell/mwifiex/cfg80211.c | 5
drivers/net/wireless/marvell/mwifiex/main.c | 4
drivers/net/wireless/st/cw1200/sta.c | 2
drivers/pci/msi/msi.c | 3
drivers/pcmcia/omap_cf.c | 2
drivers/pcmcia/rsrc_iodyn.c | 3
drivers/pcmcia/rsrc_nonstatic.c | 4
drivers/scsi/lpfc/lpfc_nvmet.c | 10
drivers/spi/spi-fsl-lpspi.c | 15 -
drivers/spi/spi-tegra114.c | 18 -
drivers/tee/optee/ffa_abi.c | 4
drivers/tee/tee_shm.c | 6
fs/btrfs/btrfs_inode.h | 2
fs/btrfs/extent_io.c | 2
fs/btrfs/inode.c | 1
fs/btrfs/tree-log.c | 78 +++--
fs/fs-writeback.c | 9
fs/notify/fdinfo.c | 4
fs/ocfs2/inode.c | 3
fs/overlayfs/copy_up.c | 5
fs/proc/generic.c | 38 +-
fs/smb/client/cifs_unicode.c | 3
include/linux/bpf-cgroup.h | 5
include/linux/bpf.h | 60 ++--
include/linux/pci.h | 2
include/linux/pgtable.h | 16 +
include/linux/vmalloc.h | 16 -
kernel/bpf/core.c | 50 ++-
kernel/bpf/syscall.c | 19 -
kernel/sched/cpufreq_schedutil.c | 28 +-
mm/slub.c | 216 ++++++++-------
net/atm/resources.c | 6
net/ax25/ax25_in.c | 4
net/batman-adv/network-coding.c | 7
net/bluetooth/hci_sync.c | 2
net/bluetooth/l2cap_sock.c | 3
net/bridge/br_netfilter_hooks.c | 3
net/dsa/tag_ksz.c | 22 +
net/ipv4/devinet.c | 7
net/ipv4/icmp.c | 6
net/ipv6/ip6_icmp.c | 6
net/mctp/af_mctp.c | 2
net/netfilter/nf_conntrack_helper.c | 4
net/smc/smc_clc.c | 2
net/smc/smc_ib.c | 3
net/wireless/scan.c | 3
net/wireless/sme.c | 5
sound/pci/hda/patch_hdmi.c | 1
sound/pci/hda/patch_realtek.c | 5
sound/usb/mixer_quirks.c | 2
tools/gpio/Makefile | 4
tools/testing/selftests/net/bind_bhash.c | 4
86 files changed, 771 insertions(+), 557 deletions(-)
Aaron Erhardt (1):
ALSA: hda/realtek: Fix headset mic for TongFang X6[AF]R5xxY
Aaron Kling (2):
spi: tegra114: Don't fail set_cs_timing when delays are zero
spi: tegra114: Use value to check for invalid delays
Alex Deucher (2):
drm/amdgpu: drop hw access in non-DC audio fini
Revert "drm/amdgpu: Avoid extra evict-restore process."
Alex Hung (1):
drm/amd/display: Check link_res->hpo_dp_link_enc before using it
Alexander Danilenko (1):
spi: tegra114: Remove unnecessary NULL-pointer checks
Alok Tiwari (2):
xirc2ps_cs: fix register access when enabling FullDuplex
mctp: return -ENOPROTOOPT for unknown getsockopt options
Amir Goldstein (1):
fs: relax assertions on failure to encode file handles
Candice Li (1):
drm/amdgpu: Optimize RAS TA initialization and TA unload funcs
Chen Ni (1):
pcmcia: omap: Add missing check for platform_get_resource
Chengming Zhou (1):
slub: Reflow ___slab_alloc()
Chris Chiu (1):
ALSA: hda/realtek - Add new HP ZBook laptop with micmute led fixup
Christophe JAILLET (1):
i2c: designware: Fix an error handling path in i2c_dw_pci_probe()
Colin Ian King (1):
drm/amd/amdgpu: Fix missing error return on kzalloc failure
Cryolitia PukNgae (1):
ALSA: usb-audio: Add mute TLV for playback volumes on some devices
Dan Carpenter (4):
wifi: cw1200: cap SSID length in cw1200_do_join()
wifi: libertas: cap SSID len in lbs_associate()
wifi: cfg80211: sme: cap SSID length in __cfg80211_connect_result()
ipv4: Fix NULL vs error pointer check in inet_blackhole_dev_init()
Daniel Borkmann (4):
bpf: Add cookie object to bpf maps
bpf: Move cgroup iterator helpers to bpf.h
bpf: Move bpf map owner out of common struct
bpf: Fix oob access in cgroup local storage
David Lechner (1):
iio: chemical: pms7003: use aligned_s64 for timestamp
Dmitry Antipov (1):
wifi: cfg80211: fix use-after-free in cmp_bss()
Edward Adam Davis (1):
ocfs2: prevent release journal inode after journal shutdown
Eric Dumazet (1):
ax25: properly unshare skbs in ax25_kiss_rcv()
Fabian Bläse (1):
icmp: fix icmp_ndo_send address translation for reply direction
Felix Fietkau (1):
net: ethernet: mtk_eth_soc: fix tx vlan tag for llc packets
Filipe Manana (3):
btrfs: fix race between logging inode and checking if it was logged before
btrfs: fix race between setting last_dir_index_offset and inode logging
btrfs: avoid load/store tearing races when checking if an inode was logged
Greg Kroah-Hartman (1):
Linux 6.1.151
Harry Yoo (2):
x86/mm/64: define ARCH_PAGE_TABLE_SYNC_MASK and arch_sync_kernel_mappings()
mm: move page table sync declarations to linux/pgtable.h
Hawking Zhang (1):
drm/amdgpu: Replace DRM_* with dev_* in amdgpu_psp.c
Horatiu Vultur (1):
phy: mscc: Stop taking ts_lock for tx_queue and use its own lock
Jakob Unterwurzacher (1):
net: dsa: microchip: linearize skb for tail-tagging switches
Jiufei Xue (1):
fs: writeback: fix use-after-free in __mark_inode_dirty()
John Evans (1):
scsi: lpfc: Fix buffer free/clear order in deferred receive path
Jonathan Currier (1):
PCI/MSI: Add an option to write MSIX ENTRY_DATA before any reads
Josef Bacik (1):
btrfs: adjust subpage bit start based on sectorsize
Kuniyuki Iwashima (2):
Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen()
selftest: net: Fix weird setsockopt() in bind_bhash.c.
Lad Prabhakar (1):
net: pcs: rzn1-miic: Correct MODCTRL register offset
Larisa Grigore (3):
spi: spi-fsl-lpspi: Fix transmissions when using CONT
spi: spi-fsl-lpspi: Set correct chip-select polarity bit
spi: spi-fsl-lpspi: Reset FIFO and disable module on transfer abort
Li Qiong (1):
mm/slub: avoid accessing metadata when pointer is invalid in object_err()
Lijo Lazar (1):
drm/amdgpu: Skip TMR allocation if not required
Liu Jian (1):
net/smc: fix one NULL pointer dereference in smc_ib_is_sg_need_sync()
Lubomir Rintel (1):
cdc_ncm: Flag Intel OEM version of Fibocom L850-GL as WWAN
Luca Ceresoli (1):
iio: light: opt3001: fix deadlock due to concurrent flag access
Ma Ke (1):
pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()
Mahanta Jambigi (1):
net/smc: Remove validation of reserved bits in CLC Decline message
Makar Semyonov (1):
cifs: prevent NULL pointer dereference in UTF16 conversion
Marek Vasut (1):
arm64: dts: imx8mp: Fix missing microSD slot vqmmc on DH electronics i.MX8M Plus DHCOM
Mario Limonciello (1):
drm/amd: Make flashing messages quieter
Miaoqian Lin (2):
mISDN: Fix memory leak in dsp_hwec_enable()
ACPI/IORT: Fix memory leak in iort_rmr_alloc_sids()
Michael Walle (1):
drm/bridge: ti-sn65dsi86: fix REFCLK setting
Pei Xiao (1):
tee: fix NULL pointer dereference in tee_shm_put
Peter Robinson (1):
arm64: dts: rockchip: Add vcc-supply to SPI flash on rk3399-pinebook-pro
Phil Sutter (1):
netfilter: conntrack: helper: Replace -EEXIST by -EBUSY
Pieter Van Trappen (1):
net: dsa: microchip: update tag_ksz masks for KSZ9477 family
Qianfeng Rong (1):
wifi: mwifiex: Initialize the chan_stats array to zero
Qingfang Deng (1):
ppp: fix memory leak in pad_compress_skb
Qiu-ji Chen (2):
dmaengine: mediatek: Fix a possible deadlock error in mtk_cqdma_tx_status()
dmaengine: mediatek: Fix a flag reuse error in mtk_cqdma_tx_status()
Rafael J. Wysocki (6):
cpufreq/sched: Explicitly synchronize limits_changed flag handling
cpufreq: intel_pstate: Fold intel_pstate_max_within_limits() into caller
cpufreq: intel_pstate: Do not update global.turbo_disabled after initialization
cpufreq: intel_pstate: Rearrange show_no_turbo() and store_no_turbo()
cpufreq: intel_pstate: Read global.no_turbo under READ_ONCE()
cpufreq: intel_pstate: Check turbo_is_disabled() in store_no_turbo()
Ronak Doshi (1):
vmxnet3: update MTU after device quiesce
Rosen Penev (2):
net: thunder_bgx: add a missing of_node_put
net: thunder_bgx: decrement cleanup index before use
Sean Anderson (1):
net: macb: Fix tx_ptr_lock locking
Srinivas Pandruvada (2):
cpufreq: intel_pstate: Revise global turbo disable check
cpufreq: intel_pstate: Unchecked MSR aceess in legacy mode
Srinivasan Shanmugam (1):
drm/amd/amdgpu: Fix style problems in amdgpu_psp.c
Stanislav Fort (1):
batman-adv: fix OOB read/write in network-coding decode
Stefan Binding (1):
ALSA: hda/realtek: Add support for HP Agusta using CS35L41 HDA
Sungbae Yoo (1):
tee: optee: ffa: fix a typo of "optee_ffa_api_is_compatible"
Takashi Iwai (1):
ALSA: hda/hdmi: Add pin fix for another HP EliteDesk 800 G4 model
Tao Zhou (1):
drm/amdgpu: remove the check of init status in psp_ras_initialize
Timur Kristóf (1):
drm/amd/display: Don't warn when missing DCE encoder caps
Vadim Pasternak (1):
hwmon: mlxreg-fan: Prevent fans from getting stuck at 0 RPM
Vitaly Lifshits (1):
e1000e: fix heap overflow in e1000_set_eeprom
Vlastimil Babka (1):
mm, slub: refactor free debug processing
Wang Liang (2):
netfilter: br_netfilter: do not check confirmed bit in br_nf_local_in() after confirm
net: atm: fix memory leak in atm_register_sysfs when device_register fail
Wentao Liang (1):
pcmcia: Add error handling for add_interval() in do_validate_mem()
Yang Li (1):
Bluetooth: hci_sync: Avoid adding default advertising on startup
Zhen Ni (1):
i40e: Fix potential invalid access when MAC list is empty
wangzijie (1):
proc: fix missing pde_set_flags() for net proc files
yangshiguang (1):
mm: slub: avoid wake up kswapd in set_track_prepare
zhang jiao (1):
tools: gpio: remove the include directory on make clean
zhangjiao (1):
tools: gpio: rm .*.cmd on make clean
This is the start of the stable review cycle for the 5.4.299 release.
There are 45 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 Tue, 09 Sep 2025 19:55:53 +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/v5.x/stable-review/patch-5.4.299-rc…
or in the git tree and branch at:
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.4.y
and the diffstat can be found below.
thanks,
greg k-h
-------------
Pseudo-Shortlog of commits:
Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Linux 5.4.299-rc1
Qiu-ji Chen <chenqiuji666(a)gmail.com>
dmaengine: mediatek: Fix a flag reuse error in mtk_cqdma_tx_status()
Roman Smirnov <r.smirnov(a)omp.ru>
cifs: fix integer overflow in match_server()
Larisa Grigore <larisa.grigore(a)nxp.com>
spi: spi-fsl-lpspi: Reset FIFO and disable module on transfer abort
Larisa Grigore <larisa.grigore(a)nxp.com>
spi: spi-fsl-lpspi: Set correct chip-select polarity bit
Larisa Grigore <larisa.grigore(a)nxp.com>
spi: spi-fsl-lpspi: Fix transmissions when using CONT
Wentao Liang <vulab(a)iscas.ac.cn>
pcmcia: Add error handling for add_interval() in do_validate_mem()
Takashi Iwai <tiwai(a)suse.de>
ALSA: hda/hdmi: Add pin fix for another HP EliteDesk 800 G4 model
Kees Cook <kees(a)kernel.org>
randstruct: gcc-plugin: Fix attribute addition
Kees Cook <kees(a)kernel.org>
randstruct: gcc-plugin: Remove bogus void member
Ronak Doshi <ronak.doshi(a)broadcom.com>
vmxnet3: update MTU after device quiesce
Jakob Unterwurzacher <jakobunt(a)gmail.com>
net: dsa: microchip: linearize skb for tail-tagging switches
Pieter Van Trappen <pieter.van.trappen(a)cern.ch>
net: dsa: microchip: update tag_ksz masks for KSZ9477 family
Qiu-ji Chen <chenqiuji666(a)gmail.com>
dmaengine: mediatek: Fix a possible deadlock error in mtk_cqdma_tx_status()
Chris Chiu <chris.chiu(a)canonical.com>
ALSA: hda/realtek - Add new HP ZBook laptop with micmute led fixup
Emanuele Ghidoli <emanuele.ghidoli(a)toradex.com>
gpio: pca953x: fix IRQ storm on system wake up
Luca Ceresoli <luca.ceresoli(a)bootlin.com>
iio: light: opt3001: fix deadlock due to concurrent flag access
David Lechner <dlechner(a)baylibre.com>
iio: chemical: pms7003: use aligned_s64 for timestamp
Sean Christopherson <seanjc(a)google.com>
KVM: x86: Take irqfds.lock when adding/deleting IRQ bypass producer
Rafael J. Wysocki <rafael.j.wysocki(a)intel.com>
cpufreq/sched: Explicitly synchronize limits_changed flag handling
Li Qiong <liqiong(a)nfschina.com>
mm/slub: avoid accessing metadata when pointer is invalid in object_err()
John Evans <evans1210144(a)gmail.com>
scsi: lpfc: Fix buffer free/clear order in deferred receive path
Jann Horn <jannh(a)google.com>
mm/khugepaged: fix ->anon_vma race
Vitaly Lifshits <vitaly.lifshits(a)intel.com>
e1000e: fix heap overflow in e1000_set_eeprom
Stanislav Fort <stanislav.fort(a)aisle.com>
batman-adv: fix OOB read/write in network-coding decode
Alex Deucher <alexander.deucher(a)amd.com>
drm/amdgpu: drop hw access in non-DC audio fini
Qianfeng Rong <rongqianfeng(a)vivo.com>
wifi: mwifiex: Initialize the chan_stats array to zero
Ma Ke <make24(a)iscas.ac.cn>
pcmcia: Fix a NULL pointer dereference in __iodyn_find_io_region()
Cryolitia PukNgae <cryolitia(a)uniontech.com>
ALSA: usb-audio: Add mute TLV for playback volumes on some devices
Qingfang Deng <dqfext(a)gmail.com>
ppp: fix memory leak in pad_compress_skb
Wang Liang <wangliang74(a)huawei.com>
net: atm: fix memory leak in atm_register_sysfs when device_register fail
Eric Dumazet <edumazet(a)google.com>
ax25: properly unshare skbs in ax25_kiss_rcv()
Dan Carpenter <dan.carpenter(a)linaro.org>
ipv4: Fix NULL vs error pointer check in inet_blackhole_dev_init()
Rosen Penev <rosenp(a)gmail.com>
net: thunder_bgx: decrement cleanup index before use
Rosen Penev <rosenp(a)gmail.com>
net: thunder_bgx: add a missing of_node_put
Dan Carpenter <dan.carpenter(a)linaro.org>
wifi: libertas: cap SSID len in lbs_associate()
Dan Carpenter <dan.carpenter(a)linaro.org>
wifi: cw1200: cap SSID length in cw1200_do_join()
Felix Fietkau <nbd(a)nbd.name>
net: ethernet: mtk_eth_soc: fix tx vlan tag for llc packets
Zhen Ni <zhen.ni(a)easystack.cn>
i40e: Fix potential invalid access when MAC list is empty
Fabian Bläse <fabian(a)blaese.de>
icmp: fix icmp_ndo_send address translation for reply direction
Miaoqian Lin <linmq006(a)gmail.com>
mISDN: Fix memory leak in dsp_hwec_enable()
Alok Tiwari <alok.a.tiwari(a)oracle.com>
xirc2ps_cs: fix register access when enabling FullDuplex
Kuniyuki Iwashima <kuniyu(a)google.com>
Bluetooth: Fix use-after-free in l2cap_sock_cleanup_listen()
Phil Sutter <phil(a)nwl.cc>
netfilter: conntrack: helper: Replace -EEXIST by -EBUSY
Dmitry Antipov <dmantipov(a)yandex.ru>
wifi: cfg80211: fix use-after-free in cmp_bss()
Nathan Chancellor <nathan(a)kernel.org>
powerpc: boot: Remove leading zero in label in udelay()
-------------
Diffstat:
Makefile | 4 +--
arch/powerpc/boot/util.S | 4 +--
arch/x86/kvm/x86.c | 16 +++++++--
drivers/dma/mediatek/mtk-cqdma.c | 10 +++---
drivers/gpio/gpio-pca953x.c | 5 +++
drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 5 ---
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 5 ---
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 5 ---
drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 5 ---
drivers/iio/chemical/pms7003.c | 5 +--
drivers/iio/light/opt3001.c | 5 +--
drivers/isdn/mISDN/dsp_hwec.c | 6 ++--
drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 20 +++++++-----
drivers/net/ethernet/intel/e1000e/ethtool.c | 10 ++++--
drivers/net/ethernet/intel/i40e/i40e_client.c | 4 +--
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 10 +++++-
drivers/net/ethernet/xircom/xirc2ps_cs.c | 2 +-
drivers/net/ppp/ppp_generic.c | 6 ++--
drivers/net/vmxnet3/vmxnet3_drv.c | 5 +--
drivers/net/wireless/marvell/libertas/cfg.c | 9 +++--
drivers/net/wireless/marvell/mwifiex/cfg80211.c | 5 +--
drivers/net/wireless/marvell/mwifiex/main.c | 4 +--
drivers/net/wireless/st/cw1200/sta.c | 2 +-
drivers/pcmcia/rsrc_iodyn.c | 3 ++
drivers/pcmcia/rsrc_nonstatic.c | 4 ++-
drivers/scsi/lpfc/lpfc_nvmet.c | 10 +++---
drivers/spi/spi-fsl-lpspi.c | 15 +++++----
fs/cifs/connect.c | 5 +++
kernel/sched/cpufreq_schedutil.c | 28 +++++++++++++---
mm/khugepaged.c | 14 +++++++-
mm/slub.c | 7 +++-
net/atm/resources.c | 6 ++--
net/ax25/ax25_in.c | 4 +++
net/batman-adv/network-coding.c | 7 +++-
net/bluetooth/l2cap_sock.c | 3 ++
net/dsa/tag_ksz.c | 22 ++++++++++---
net/ipv4/devinet.c | 7 ++--
net/ipv4/icmp.c | 6 ++--
net/ipv6/ip6_icmp.c | 6 ++--
net/netfilter/nf_conntrack_helper.c | 4 +--
net/wireless/scan.c | 3 +-
scripts/gcc-plugins/gcc-common.h | 32 ++++++++++++++++++
scripts/gcc-plugins/randomize_layout_plugin.c | 40 +++++++----------------
sound/pci/hda/patch_hdmi.c | 1 +
sound/pci/hda/patch_realtek.c | 1 +
sound/usb/mixer_quirks.c | 2 ++
46 files changed, 250 insertions(+), 132 deletions(-)
The pmsr_lock spinlock used to be necessary to synchronize access to the
PMSR register, because that access could have been triggered from either
config space access in rcar_pcie_config_access() or an exception handler
rcar_pcie_aarch32_abort_handler().
The rcar_pcie_aarch32_abort_handler() case is no longer applicable since
commit 6e36203bc14c ("PCI: rcar: Use PCI_SET_ERROR_RESPONSE after read
which triggered an exception"), which performs more accurate, controlled
invocation of the exception, and a fixup.
This leaves rcar_pcie_config_access() as the only call site from which
rcar_pcie_wakeup() is called. The rcar_pcie_config_access() can only be
called from the controller struct pci_ops .read and .write callbacks,
and those are serialized in drivers/pci/access.c using raw spinlock
'pci_lock' . CONFIG_PCI_LOCKLESS_CONFIG is never set on this platform.
Since the 'pci_lock' is a raw spinlock , and the 'pmsr_lock' is not a
raw spinlock, this constellation triggers 'BUG: Invalid wait context'
with CONFIG_PROVE_RAW_LOCK_NESTING=y .
Remove the pmsr_lock to fix the locking.
Fixes: a115b1bd3af0 ("PCI: rcar: Add L1 link state fix into data abort hook")
Reported-by: Duy Nguyen <duy.nguyen.rh(a)renesas.com>
Reported-by: Thuan Nguyen <thuan.nguyen-hong(a)banvien.com.vn>
Cc: stable(a)vger.kernel.org
Signed-off-by: Marek Vasut <marek.vasut+renesas(a)mailbox.org>
---
=============================
[ BUG: Invalid wait context ]
6.17.0-rc4-next-20250905-00048-ga08e553145e7-dirty #1116 Not tainted
-----------------------------
swapper/0/1 is trying to lock:
ffffffd92cf69c30 (pmsr_lock){....}-{3:3}, at: rcar_pcie_config_access+0x48/0x260
other info that might help us debug this:
context-{5:5}
3 locks held by swapper/0/1:
#0: ffffff84c0f890f8 (&dev->mutex){....}-{4:4}, at: device_lock+0x14/0x1c
#1: ffffffd92cf675b0 (pci_rescan_remove_lock){+.+.}-{4:4}, at: pci_lock_rescan_remove+0x18/0x20
#2: ffffffd92cf674a0 (pci_lock){....}-{2:2}, at: pci_bus_read_config_dword+0x54/0xd8
stack backtrace:
CPU: 3 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.17.0-rc4-next-20250905-00048-ga08e553145e7-dirty #1116 PREEMPT
Hardware name: Renesas Salvator-X 2nd version board based on r8a77951 (DT)
Call trace:
dump_backtrace+0x6c/0x7c (C)
show_stack+0x14/0x1c
dump_stack_lvl+0x68/0x8c
dump_stack+0x14/0x1c
__lock_acquire+0x3e8/0x1064
lock_acquire+0x17c/0x2ac
_raw_spin_lock_irqsave+0x54/0x70
rcar_pcie_config_access+0x48/0x260
rcar_pcie_read_conf+0x44/0xd8
pci_bus_read_config_dword+0x78/0xd8
pci_bus_generic_read_dev_vendor_id+0x30/0x138
pci_bus_read_dev_vendor_id+0x60/0x68
pci_scan_single_device+0x11c/0x1ec
pci_scan_slot+0x7c/0x170
pci_scan_child_bus_extend+0x5c/0x29c
pci_scan_child_bus+0x10/0x18
pci_scan_root_bus_bridge+0x90/0xc8
pci_host_probe+0x24/0xc4
rcar_pcie_probe+0x5e8/0x650
platform_probe+0x58/0x88
really_probe+0x190/0x350
__driver_probe_device+0x120/0x138
driver_probe_device+0x38/0xec
__driver_attach+0x158/0x168
bus_for_each_dev+0x7c/0xd0
driver_attach+0x20/0x28
bus_add_driver+0xe0/0x1d8
driver_register+0xac/0xe8
__platform_driver_register+0x1c/0x24
rcar_pcie_driver_init+0x18/0x20
do_one_initcall+0xd4/0x220
kernel_init_freeable+0x308/0x30c
kernel_init+0x20/0x11c
ret_from_fork+0x10/0x20
---
Cc: "Krzysztof Wilczyński" <kwilczynski(a)kernel.org>
Cc: Bjorn Helgaas <bhelgaas(a)google.com>
Cc: Geert Uytterhoeven <geert+renesas(a)glider.be>
Cc: Lorenzo Pieralisi <lpieralisi(a)kernel.org>
Cc: Magnus Damm <magnus.damm(a)gmail.com>
Cc: Manivannan Sadhasivam <mani(a)kernel.org>
Cc: Marc Zyngier <maz(a)kernel.org>
Cc: Rob Herring <robh(a)kernel.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh(a)renesas.com>
Cc: linux-pci(a)vger.kernel.org
Cc: linux-renesas-soc(a)vger.kernel.org
---
drivers/pci/controller/pcie-rcar-host.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/drivers/pci/controller/pcie-rcar-host.c b/drivers/pci/controller/pcie-rcar-host.c
index 4780e0109e583..625a00f3b2230 100644
--- a/drivers/pci/controller/pcie-rcar-host.c
+++ b/drivers/pci/controller/pcie-rcar-host.c
@@ -52,20 +52,13 @@ struct rcar_pcie_host {
int (*phy_init_fn)(struct rcar_pcie_host *host);
};
-static DEFINE_SPINLOCK(pmsr_lock);
-
static int rcar_pcie_wakeup(struct device *pcie_dev, void __iomem *pcie_base)
{
- unsigned long flags;
u32 pmsr, val;
int ret = 0;
- spin_lock_irqsave(&pmsr_lock, flags);
-
- if (!pcie_base || pm_runtime_suspended(pcie_dev)) {
- ret = -EINVAL;
- goto unlock_exit;
- }
+ if (!pcie_base || pm_runtime_suspended(pcie_dev))
+ return -EINVAL;
pmsr = readl(pcie_base + PMSR);
@@ -87,8 +80,6 @@ static int rcar_pcie_wakeup(struct device *pcie_dev, void __iomem *pcie_base)
writel(L1FAEG | PMEL1RX, pcie_base + PMSR);
}
-unlock_exit:
- spin_unlock_irqrestore(&pmsr_lock, flags);
return ret;
}
--
2.51.0
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 f2d2f9598ebb0158a3fe17cda0106d7752e654a2
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025090608-wages-saloon-a401@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From f2d2f9598ebb0158a3fe17cda0106d7752e654a2 Mon Sep 17 00:00:00 2001
From: Harry Yoo <harry.yoo(a)oracle.com>
Date: Mon, 18 Aug 2025 11:02:05 +0900
Subject: [PATCH] mm: introduce and use {pgd,p4d}_populate_kernel()
Introduce and use {pgd,p4d}_populate_kernel() in core MM code when
populating PGD and P4D entries for the kernel address space. These
helpers ensure proper synchronization of page tables when updating the
kernel portion of top-level page tables.
Until now, the kernel has relied on each architecture to handle
synchronization of top-level page tables in an ad-hoc manner. For
example, see commit 9b861528a801 ("x86-64, mem: Update all PGDs for direct
mapping and vmemmap mapping changes").
However, this approach has proven fragile for following reasons:
1) It is easy to forget to perform the necessary page table
synchronization when introducing new changes.
For instance, commit 4917f55b4ef9 ("mm/sparse-vmemmap: improve memory
savings for compound devmaps") overlooked the need to synchronize
page tables for the vmemmap area.
2) It is also easy to overlook that the vmemmap and direct mapping areas
must not be accessed before explicit page table synchronization.
For example, commit 8d400913c231 ("x86/vmemmap: handle unpopulated
sub-pmd ranges")) caused crashes by accessing the vmemmap area
before calling sync_global_pgds().
To address this, as suggested by Dave Hansen, introduce _kernel() variants
of the page table population helpers, which invoke architecture-specific
hooks to properly synchronize page tables. These are introduced in a new
header file, include/linux/pgalloc.h, so they can be called from common
code.
They reuse existing infrastructure for vmalloc and ioremap.
Synchronization requirements are determined by ARCH_PAGE_TABLE_SYNC_MASK,
and the actual synchronization is performed by
arch_sync_kernel_mappings().
This change currently targets only x86_64, so only PGD and P4D level
helpers are introduced. Currently, these helpers are no-ops since no
architecture sets PGTBL_{PGD,P4D}_MODIFIED in ARCH_PAGE_TABLE_SYNC_MASK.
In theory, PUD and PMD level helpers can be added later if needed by other
architectures. For now, 32-bit architectures (x86-32 and arm) only handle
PGTBL_PMD_MODIFIED, so p*d_populate_kernel() will never affect them unless
we introduce a PMD level helper.
[harry.yoo(a)oracle.com: fix KASAN build error due to p*d_populate_kernel()]
Link: https://lkml.kernel.org/r/20250822020727.202749-1-harry.yoo@oracle.com
Link: https://lkml.kernel.org/r/20250818020206.4517-3-harry.yoo@oracle.com
Fixes: 8d400913c231 ("x86/vmemmap: handle unpopulated sub-pmd ranges")
Signed-off-by: Harry Yoo <harry.yoo(a)oracle.com>
Suggested-by: Dave Hansen <dave.hansen(a)linux.intel.com>
Acked-by: Kiryl Shutsemau <kas(a)kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt(a)kernel.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com>
Acked-by: David Hildenbrand <david(a)redhat.com>
Cc: Alexander Potapenko <glider(a)google.com>
Cc: Alistair Popple <apopple(a)nvidia.com>
Cc: Andrey Konovalov <andreyknvl(a)gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a(a)gmail.com>
Cc: Andy Lutomirski <luto(a)kernel.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar(a)linux.ibm.com>
Cc: Anshuman Khandual <anshuman.khandual(a)arm.com>
Cc: Ard Biesheuvel <ardb(a)kernel.org>
Cc: Arnd Bergmann <arnd(a)arndb.de>
Cc: bibo mao <maobibo(a)loongson.cn>
Cc: Borislav Betkov <bp(a)alien8.de>
Cc: Christoph Lameter (Ampere) <cl(a)gentwo.org>
Cc: Dennis Zhou <dennis(a)kernel.org>
Cc: Dev Jain <dev.jain(a)arm.com>
Cc: Dmitriy Vyukov <dvyukov(a)google.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun(a)intel.com>
Cc: Ingo Molnar <mingo(a)redhat.com>
Cc: Jane Chu <jane.chu(a)oracle.com>
Cc: Joao Martins <joao.m.martins(a)oracle.com>
Cc: Joerg Roedel <joro(a)8bytes.org>
Cc: John Hubbard <jhubbard(a)nvidia.com>
Cc: Kevin Brodsky <kevin.brodsky(a)arm.com>
Cc: Liam Howlett <liam.howlett(a)oracle.com>
Cc: Michal Hocko <mhocko(a)suse.com>
Cc: Oscar Salvador <osalvador(a)suse.de>
Cc: Peter Xu <peterx(a)redhat.com>
Cc: Peter Zijlstra <peterz(a)infradead.org>
Cc: Qi Zheng <zhengqi.arch(a)bytedance.com>
Cc: Ryan Roberts <ryan.roberts(a)arm.com>
Cc: Suren Baghdasaryan <surenb(a)google.com>
Cc: Tejun Heo <tj(a)kernel.org>
Cc: Thomas Gleinxer <tglx(a)linutronix.de>
Cc: Thomas Huth <thuth(a)redhat.com>
Cc: "Uladzislau Rezki (Sony)" <urezki(a)gmail.com>
Cc: Vincenzo Frascino <vincenzo.frascino(a)arm.com>
Cc: Vlastimil Babka <vbabka(a)suse.cz>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
diff --git a/include/linux/pgalloc.h b/include/linux/pgalloc.h
new file mode 100644
index 000000000000..9174fa59bbc5
--- /dev/null
+++ b/include/linux/pgalloc.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_PGALLOC_H
+#define _LINUX_PGALLOC_H
+
+#include <linux/pgtable.h>
+#include <asm/pgalloc.h>
+
+/*
+ * {pgd,p4d}_populate_kernel() are defined as macros to allow
+ * compile-time optimization based on the configured page table levels.
+ * Without this, linking may fail because callers (e.g., KASAN) may rely
+ * on calls to these functions being optimized away when passing symbols
+ * that exist only for certain page table levels.
+ */
+#define pgd_populate_kernel(addr, pgd, p4d) \
+ do { \
+ pgd_populate(&init_mm, pgd, p4d); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_PGD_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#define p4d_populate_kernel(addr, p4d, pud) \
+ do { \
+ p4d_populate(&init_mm, p4d, pud); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_P4D_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#endif /* _LINUX_PGALLOC_H */
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index ba699df6ef69..2b80fd456c8b 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1469,8 +1469,8 @@ static inline void modify_prot_commit_ptes(struct vm_area_struct *vma, unsigned
/*
* Architectures can set this mask to a combination of PGTBL_P?D_MODIFIED values
- * and let generic vmalloc and ioremap code know when arch_sync_kernel_mappings()
- * needs to be called.
+ * and let generic vmalloc, ioremap and page table update code know when
+ * arch_sync_kernel_mappings() needs to be called.
*/
#ifndef ARCH_PAGE_TABLE_SYNC_MASK
#define ARCH_PAGE_TABLE_SYNC_MASK 0
@@ -1954,10 +1954,11 @@ static inline bool arch_has_pfn_modify_check(void)
/*
* Page Table Modification bits for pgtbl_mod_mask.
*
- * These are used by the p?d_alloc_track*() set of functions an in the generic
- * vmalloc/ioremap code to track at which page-table levels entries have been
- * modified. Based on that the code can better decide when vmalloc and ioremap
- * mapping changes need to be synchronized to other page-tables in the system.
+ * These are used by the p?d_alloc_track*() and p*d_populate_kernel()
+ * functions in the generic vmalloc, ioremap and page table update code
+ * to track at which page-table levels entries have been modified.
+ * Based on that the code can better decide when page table changes need
+ * to be synchronized to other page-tables in the system.
*/
#define __PGTBL_PGD_MODIFIED 0
#define __PGTBL_P4D_MODIFIED 1
diff --git a/mm/kasan/init.c b/mm/kasan/init.c
index ced6b29fcf76..8fce3370c84e 100644
--- a/mm/kasan/init.c
+++ b/mm/kasan/init.c
@@ -13,9 +13,9 @@
#include <linux/mm.h>
#include <linux/pfn.h>
#include <linux/slab.h>
+#include <linux/pgalloc.h>
#include <asm/page.h>
-#include <asm/pgalloc.h>
#include "kasan.h"
@@ -191,7 +191,7 @@ static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
pud_t *pud;
pmd_t *pmd;
- p4d_populate(&init_mm, p4d,
+ p4d_populate_kernel(addr, p4d,
lm_alias(kasan_early_shadow_pud));
pud = pud_offset(p4d, addr);
pud_populate(&init_mm, pud,
@@ -212,7 +212,7 @@ static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
} else {
p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);
pud_init(p);
- p4d_populate(&init_mm, p4d, p);
+ p4d_populate_kernel(addr, p4d, p);
}
}
zero_pud_populate(p4d, addr, next);
@@ -251,10 +251,10 @@ int __ref kasan_populate_early_shadow(const void *shadow_start,
* puds,pmds, so pgd_populate(), pud_populate()
* is noops.
*/
- pgd_populate(&init_mm, pgd,
+ pgd_populate_kernel(addr, pgd,
lm_alias(kasan_early_shadow_p4d));
p4d = p4d_offset(pgd, addr);
- p4d_populate(&init_mm, p4d,
+ p4d_populate_kernel(addr, p4d,
lm_alias(kasan_early_shadow_pud));
pud = pud_offset(p4d, addr);
pud_populate(&init_mm, pud,
@@ -273,7 +273,7 @@ int __ref kasan_populate_early_shadow(const void *shadow_start,
if (!p)
return -ENOMEM;
} else {
- pgd_populate(&init_mm, pgd,
+ pgd_populate_kernel(addr, pgd,
early_alloc(PAGE_SIZE, NUMA_NO_NODE));
}
}
diff --git a/mm/percpu.c b/mm/percpu.c
index d9cbaee92b60..a56f35dcc417 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -3108,7 +3108,7 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
#endif /* BUILD_EMBED_FIRST_CHUNK */
#ifdef BUILD_PAGE_FIRST_CHUNK
-#include <asm/pgalloc.h>
+#include <linux/pgalloc.h>
#ifndef P4D_TABLE_SIZE
#define P4D_TABLE_SIZE PAGE_SIZE
@@ -3134,13 +3134,13 @@ void __init __weak pcpu_populate_pte(unsigned long addr)
if (pgd_none(*pgd)) {
p4d = memblock_alloc_or_panic(P4D_TABLE_SIZE, P4D_TABLE_SIZE);
- pgd_populate(&init_mm, pgd, p4d);
+ pgd_populate_kernel(addr, pgd, p4d);
}
p4d = p4d_offset(pgd, addr);
if (p4d_none(*p4d)) {
pud = memblock_alloc_or_panic(PUD_TABLE_SIZE, PUD_TABLE_SIZE);
- p4d_populate(&init_mm, p4d, pud);
+ p4d_populate_kernel(addr, p4d, pud);
}
pud = pud_offset(p4d, addr);
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 41aa0493eb03..dbd8daccade2 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -27,9 +27,9 @@
#include <linux/spinlock.h>
#include <linux/vmalloc.h>
#include <linux/sched.h>
+#include <linux/pgalloc.h>
#include <asm/dma.h>
-#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include "hugetlb_vmemmap.h"
@@ -229,7 +229,7 @@ p4d_t * __meminit vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node)
if (!p)
return NULL;
pud_init(p);
- p4d_populate(&init_mm, p4d, p);
+ p4d_populate_kernel(addr, p4d, p);
}
return p4d;
}
@@ -241,7 +241,7 @@ pgd_t * __meminit vmemmap_pgd_populate(unsigned long addr, int node)
void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node);
if (!p)
return NULL;
- pgd_populate(&init_mm, pgd, p);
+ pgd_populate_kernel(addr, pgd, p);
}
return pgd;
}
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 f2d2f9598ebb0158a3fe17cda0106d7752e654a2
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025090606-overthrow-bagginess-c68f@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From f2d2f9598ebb0158a3fe17cda0106d7752e654a2 Mon Sep 17 00:00:00 2001
From: Harry Yoo <harry.yoo(a)oracle.com>
Date: Mon, 18 Aug 2025 11:02:05 +0900
Subject: [PATCH] mm: introduce and use {pgd,p4d}_populate_kernel()
Introduce and use {pgd,p4d}_populate_kernel() in core MM code when
populating PGD and P4D entries for the kernel address space. These
helpers ensure proper synchronization of page tables when updating the
kernel portion of top-level page tables.
Until now, the kernel has relied on each architecture to handle
synchronization of top-level page tables in an ad-hoc manner. For
example, see commit 9b861528a801 ("x86-64, mem: Update all PGDs for direct
mapping and vmemmap mapping changes").
However, this approach has proven fragile for following reasons:
1) It is easy to forget to perform the necessary page table
synchronization when introducing new changes.
For instance, commit 4917f55b4ef9 ("mm/sparse-vmemmap: improve memory
savings for compound devmaps") overlooked the need to synchronize
page tables for the vmemmap area.
2) It is also easy to overlook that the vmemmap and direct mapping areas
must not be accessed before explicit page table synchronization.
For example, commit 8d400913c231 ("x86/vmemmap: handle unpopulated
sub-pmd ranges")) caused crashes by accessing the vmemmap area
before calling sync_global_pgds().
To address this, as suggested by Dave Hansen, introduce _kernel() variants
of the page table population helpers, which invoke architecture-specific
hooks to properly synchronize page tables. These are introduced in a new
header file, include/linux/pgalloc.h, so they can be called from common
code.
They reuse existing infrastructure for vmalloc and ioremap.
Synchronization requirements are determined by ARCH_PAGE_TABLE_SYNC_MASK,
and the actual synchronization is performed by
arch_sync_kernel_mappings().
This change currently targets only x86_64, so only PGD and P4D level
helpers are introduced. Currently, these helpers are no-ops since no
architecture sets PGTBL_{PGD,P4D}_MODIFIED in ARCH_PAGE_TABLE_SYNC_MASK.
In theory, PUD and PMD level helpers can be added later if needed by other
architectures. For now, 32-bit architectures (x86-32 and arm) only handle
PGTBL_PMD_MODIFIED, so p*d_populate_kernel() will never affect them unless
we introduce a PMD level helper.
[harry.yoo(a)oracle.com: fix KASAN build error due to p*d_populate_kernel()]
Link: https://lkml.kernel.org/r/20250822020727.202749-1-harry.yoo@oracle.com
Link: https://lkml.kernel.org/r/20250818020206.4517-3-harry.yoo@oracle.com
Fixes: 8d400913c231 ("x86/vmemmap: handle unpopulated sub-pmd ranges")
Signed-off-by: Harry Yoo <harry.yoo(a)oracle.com>
Suggested-by: Dave Hansen <dave.hansen(a)linux.intel.com>
Acked-by: Kiryl Shutsemau <kas(a)kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt(a)kernel.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com>
Acked-by: David Hildenbrand <david(a)redhat.com>
Cc: Alexander Potapenko <glider(a)google.com>
Cc: Alistair Popple <apopple(a)nvidia.com>
Cc: Andrey Konovalov <andreyknvl(a)gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a(a)gmail.com>
Cc: Andy Lutomirski <luto(a)kernel.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar(a)linux.ibm.com>
Cc: Anshuman Khandual <anshuman.khandual(a)arm.com>
Cc: Ard Biesheuvel <ardb(a)kernel.org>
Cc: Arnd Bergmann <arnd(a)arndb.de>
Cc: bibo mao <maobibo(a)loongson.cn>
Cc: Borislav Betkov <bp(a)alien8.de>
Cc: Christoph Lameter (Ampere) <cl(a)gentwo.org>
Cc: Dennis Zhou <dennis(a)kernel.org>
Cc: Dev Jain <dev.jain(a)arm.com>
Cc: Dmitriy Vyukov <dvyukov(a)google.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun(a)intel.com>
Cc: Ingo Molnar <mingo(a)redhat.com>
Cc: Jane Chu <jane.chu(a)oracle.com>
Cc: Joao Martins <joao.m.martins(a)oracle.com>
Cc: Joerg Roedel <joro(a)8bytes.org>
Cc: John Hubbard <jhubbard(a)nvidia.com>
Cc: Kevin Brodsky <kevin.brodsky(a)arm.com>
Cc: Liam Howlett <liam.howlett(a)oracle.com>
Cc: Michal Hocko <mhocko(a)suse.com>
Cc: Oscar Salvador <osalvador(a)suse.de>
Cc: Peter Xu <peterx(a)redhat.com>
Cc: Peter Zijlstra <peterz(a)infradead.org>
Cc: Qi Zheng <zhengqi.arch(a)bytedance.com>
Cc: Ryan Roberts <ryan.roberts(a)arm.com>
Cc: Suren Baghdasaryan <surenb(a)google.com>
Cc: Tejun Heo <tj(a)kernel.org>
Cc: Thomas Gleinxer <tglx(a)linutronix.de>
Cc: Thomas Huth <thuth(a)redhat.com>
Cc: "Uladzislau Rezki (Sony)" <urezki(a)gmail.com>
Cc: Vincenzo Frascino <vincenzo.frascino(a)arm.com>
Cc: Vlastimil Babka <vbabka(a)suse.cz>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
diff --git a/include/linux/pgalloc.h b/include/linux/pgalloc.h
new file mode 100644
index 000000000000..9174fa59bbc5
--- /dev/null
+++ b/include/linux/pgalloc.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_PGALLOC_H
+#define _LINUX_PGALLOC_H
+
+#include <linux/pgtable.h>
+#include <asm/pgalloc.h>
+
+/*
+ * {pgd,p4d}_populate_kernel() are defined as macros to allow
+ * compile-time optimization based on the configured page table levels.
+ * Without this, linking may fail because callers (e.g., KASAN) may rely
+ * on calls to these functions being optimized away when passing symbols
+ * that exist only for certain page table levels.
+ */
+#define pgd_populate_kernel(addr, pgd, p4d) \
+ do { \
+ pgd_populate(&init_mm, pgd, p4d); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_PGD_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#define p4d_populate_kernel(addr, p4d, pud) \
+ do { \
+ p4d_populate(&init_mm, p4d, pud); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_P4D_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#endif /* _LINUX_PGALLOC_H */
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index ba699df6ef69..2b80fd456c8b 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1469,8 +1469,8 @@ static inline void modify_prot_commit_ptes(struct vm_area_struct *vma, unsigned
/*
* Architectures can set this mask to a combination of PGTBL_P?D_MODIFIED values
- * and let generic vmalloc and ioremap code know when arch_sync_kernel_mappings()
- * needs to be called.
+ * and let generic vmalloc, ioremap and page table update code know when
+ * arch_sync_kernel_mappings() needs to be called.
*/
#ifndef ARCH_PAGE_TABLE_SYNC_MASK
#define ARCH_PAGE_TABLE_SYNC_MASK 0
@@ -1954,10 +1954,11 @@ static inline bool arch_has_pfn_modify_check(void)
/*
* Page Table Modification bits for pgtbl_mod_mask.
*
- * These are used by the p?d_alloc_track*() set of functions an in the generic
- * vmalloc/ioremap code to track at which page-table levels entries have been
- * modified. Based on that the code can better decide when vmalloc and ioremap
- * mapping changes need to be synchronized to other page-tables in the system.
+ * These are used by the p?d_alloc_track*() and p*d_populate_kernel()
+ * functions in the generic vmalloc, ioremap and page table update code
+ * to track at which page-table levels entries have been modified.
+ * Based on that the code can better decide when page table changes need
+ * to be synchronized to other page-tables in the system.
*/
#define __PGTBL_PGD_MODIFIED 0
#define __PGTBL_P4D_MODIFIED 1
diff --git a/mm/kasan/init.c b/mm/kasan/init.c
index ced6b29fcf76..8fce3370c84e 100644
--- a/mm/kasan/init.c
+++ b/mm/kasan/init.c
@@ -13,9 +13,9 @@
#include <linux/mm.h>
#include <linux/pfn.h>
#include <linux/slab.h>
+#include <linux/pgalloc.h>
#include <asm/page.h>
-#include <asm/pgalloc.h>
#include "kasan.h"
@@ -191,7 +191,7 @@ static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
pud_t *pud;
pmd_t *pmd;
- p4d_populate(&init_mm, p4d,
+ p4d_populate_kernel(addr, p4d,
lm_alias(kasan_early_shadow_pud));
pud = pud_offset(p4d, addr);
pud_populate(&init_mm, pud,
@@ -212,7 +212,7 @@ static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
} else {
p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);
pud_init(p);
- p4d_populate(&init_mm, p4d, p);
+ p4d_populate_kernel(addr, p4d, p);
}
}
zero_pud_populate(p4d, addr, next);
@@ -251,10 +251,10 @@ int __ref kasan_populate_early_shadow(const void *shadow_start,
* puds,pmds, so pgd_populate(), pud_populate()
* is noops.
*/
- pgd_populate(&init_mm, pgd,
+ pgd_populate_kernel(addr, pgd,
lm_alias(kasan_early_shadow_p4d));
p4d = p4d_offset(pgd, addr);
- p4d_populate(&init_mm, p4d,
+ p4d_populate_kernel(addr, p4d,
lm_alias(kasan_early_shadow_pud));
pud = pud_offset(p4d, addr);
pud_populate(&init_mm, pud,
@@ -273,7 +273,7 @@ int __ref kasan_populate_early_shadow(const void *shadow_start,
if (!p)
return -ENOMEM;
} else {
- pgd_populate(&init_mm, pgd,
+ pgd_populate_kernel(addr, pgd,
early_alloc(PAGE_SIZE, NUMA_NO_NODE));
}
}
diff --git a/mm/percpu.c b/mm/percpu.c
index d9cbaee92b60..a56f35dcc417 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -3108,7 +3108,7 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
#endif /* BUILD_EMBED_FIRST_CHUNK */
#ifdef BUILD_PAGE_FIRST_CHUNK
-#include <asm/pgalloc.h>
+#include <linux/pgalloc.h>
#ifndef P4D_TABLE_SIZE
#define P4D_TABLE_SIZE PAGE_SIZE
@@ -3134,13 +3134,13 @@ void __init __weak pcpu_populate_pte(unsigned long addr)
if (pgd_none(*pgd)) {
p4d = memblock_alloc_or_panic(P4D_TABLE_SIZE, P4D_TABLE_SIZE);
- pgd_populate(&init_mm, pgd, p4d);
+ pgd_populate_kernel(addr, pgd, p4d);
}
p4d = p4d_offset(pgd, addr);
if (p4d_none(*p4d)) {
pud = memblock_alloc_or_panic(PUD_TABLE_SIZE, PUD_TABLE_SIZE);
- p4d_populate(&init_mm, p4d, pud);
+ p4d_populate_kernel(addr, p4d, pud);
}
pud = pud_offset(p4d, addr);
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 41aa0493eb03..dbd8daccade2 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -27,9 +27,9 @@
#include <linux/spinlock.h>
#include <linux/vmalloc.h>
#include <linux/sched.h>
+#include <linux/pgalloc.h>
#include <asm/dma.h>
-#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include "hugetlb_vmemmap.h"
@@ -229,7 +229,7 @@ p4d_t * __meminit vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node)
if (!p)
return NULL;
pud_init(p);
- p4d_populate(&init_mm, p4d, p);
+ p4d_populate_kernel(addr, p4d, p);
}
return p4d;
}
@@ -241,7 +241,7 @@ pgd_t * __meminit vmemmap_pgd_populate(unsigned long addr, int node)
void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node);
if (!p)
return NULL;
- pgd_populate(&init_mm, pgd, p);
+ pgd_populate_kernel(addr, pgd, p);
}
return pgd;
}
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 f2d2f9598ebb0158a3fe17cda0106d7752e654a2
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025090604-obnoxious-bronco-1690@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From f2d2f9598ebb0158a3fe17cda0106d7752e654a2 Mon Sep 17 00:00:00 2001
From: Harry Yoo <harry.yoo(a)oracle.com>
Date: Mon, 18 Aug 2025 11:02:05 +0900
Subject: [PATCH] mm: introduce and use {pgd,p4d}_populate_kernel()
Introduce and use {pgd,p4d}_populate_kernel() in core MM code when
populating PGD and P4D entries for the kernel address space. These
helpers ensure proper synchronization of page tables when updating the
kernel portion of top-level page tables.
Until now, the kernel has relied on each architecture to handle
synchronization of top-level page tables in an ad-hoc manner. For
example, see commit 9b861528a801 ("x86-64, mem: Update all PGDs for direct
mapping and vmemmap mapping changes").
However, this approach has proven fragile for following reasons:
1) It is easy to forget to perform the necessary page table
synchronization when introducing new changes.
For instance, commit 4917f55b4ef9 ("mm/sparse-vmemmap: improve memory
savings for compound devmaps") overlooked the need to synchronize
page tables for the vmemmap area.
2) It is also easy to overlook that the vmemmap and direct mapping areas
must not be accessed before explicit page table synchronization.
For example, commit 8d400913c231 ("x86/vmemmap: handle unpopulated
sub-pmd ranges")) caused crashes by accessing the vmemmap area
before calling sync_global_pgds().
To address this, as suggested by Dave Hansen, introduce _kernel() variants
of the page table population helpers, which invoke architecture-specific
hooks to properly synchronize page tables. These are introduced in a new
header file, include/linux/pgalloc.h, so they can be called from common
code.
They reuse existing infrastructure for vmalloc and ioremap.
Synchronization requirements are determined by ARCH_PAGE_TABLE_SYNC_MASK,
and the actual synchronization is performed by
arch_sync_kernel_mappings().
This change currently targets only x86_64, so only PGD and P4D level
helpers are introduced. Currently, these helpers are no-ops since no
architecture sets PGTBL_{PGD,P4D}_MODIFIED in ARCH_PAGE_TABLE_SYNC_MASK.
In theory, PUD and PMD level helpers can be added later if needed by other
architectures. For now, 32-bit architectures (x86-32 and arm) only handle
PGTBL_PMD_MODIFIED, so p*d_populate_kernel() will never affect them unless
we introduce a PMD level helper.
[harry.yoo(a)oracle.com: fix KASAN build error due to p*d_populate_kernel()]
Link: https://lkml.kernel.org/r/20250822020727.202749-1-harry.yoo@oracle.com
Link: https://lkml.kernel.org/r/20250818020206.4517-3-harry.yoo@oracle.com
Fixes: 8d400913c231 ("x86/vmemmap: handle unpopulated sub-pmd ranges")
Signed-off-by: Harry Yoo <harry.yoo(a)oracle.com>
Suggested-by: Dave Hansen <dave.hansen(a)linux.intel.com>
Acked-by: Kiryl Shutsemau <kas(a)kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt(a)kernel.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com>
Acked-by: David Hildenbrand <david(a)redhat.com>
Cc: Alexander Potapenko <glider(a)google.com>
Cc: Alistair Popple <apopple(a)nvidia.com>
Cc: Andrey Konovalov <andreyknvl(a)gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a(a)gmail.com>
Cc: Andy Lutomirski <luto(a)kernel.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar(a)linux.ibm.com>
Cc: Anshuman Khandual <anshuman.khandual(a)arm.com>
Cc: Ard Biesheuvel <ardb(a)kernel.org>
Cc: Arnd Bergmann <arnd(a)arndb.de>
Cc: bibo mao <maobibo(a)loongson.cn>
Cc: Borislav Betkov <bp(a)alien8.de>
Cc: Christoph Lameter (Ampere) <cl(a)gentwo.org>
Cc: Dennis Zhou <dennis(a)kernel.org>
Cc: Dev Jain <dev.jain(a)arm.com>
Cc: Dmitriy Vyukov <dvyukov(a)google.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun(a)intel.com>
Cc: Ingo Molnar <mingo(a)redhat.com>
Cc: Jane Chu <jane.chu(a)oracle.com>
Cc: Joao Martins <joao.m.martins(a)oracle.com>
Cc: Joerg Roedel <joro(a)8bytes.org>
Cc: John Hubbard <jhubbard(a)nvidia.com>
Cc: Kevin Brodsky <kevin.brodsky(a)arm.com>
Cc: Liam Howlett <liam.howlett(a)oracle.com>
Cc: Michal Hocko <mhocko(a)suse.com>
Cc: Oscar Salvador <osalvador(a)suse.de>
Cc: Peter Xu <peterx(a)redhat.com>
Cc: Peter Zijlstra <peterz(a)infradead.org>
Cc: Qi Zheng <zhengqi.arch(a)bytedance.com>
Cc: Ryan Roberts <ryan.roberts(a)arm.com>
Cc: Suren Baghdasaryan <surenb(a)google.com>
Cc: Tejun Heo <tj(a)kernel.org>
Cc: Thomas Gleinxer <tglx(a)linutronix.de>
Cc: Thomas Huth <thuth(a)redhat.com>
Cc: "Uladzislau Rezki (Sony)" <urezki(a)gmail.com>
Cc: Vincenzo Frascino <vincenzo.frascino(a)arm.com>
Cc: Vlastimil Babka <vbabka(a)suse.cz>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
diff --git a/include/linux/pgalloc.h b/include/linux/pgalloc.h
new file mode 100644
index 000000000000..9174fa59bbc5
--- /dev/null
+++ b/include/linux/pgalloc.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_PGALLOC_H
+#define _LINUX_PGALLOC_H
+
+#include <linux/pgtable.h>
+#include <asm/pgalloc.h>
+
+/*
+ * {pgd,p4d}_populate_kernel() are defined as macros to allow
+ * compile-time optimization based on the configured page table levels.
+ * Without this, linking may fail because callers (e.g., KASAN) may rely
+ * on calls to these functions being optimized away when passing symbols
+ * that exist only for certain page table levels.
+ */
+#define pgd_populate_kernel(addr, pgd, p4d) \
+ do { \
+ pgd_populate(&init_mm, pgd, p4d); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_PGD_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#define p4d_populate_kernel(addr, p4d, pud) \
+ do { \
+ p4d_populate(&init_mm, p4d, pud); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_P4D_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#endif /* _LINUX_PGALLOC_H */
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index ba699df6ef69..2b80fd456c8b 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1469,8 +1469,8 @@ static inline void modify_prot_commit_ptes(struct vm_area_struct *vma, unsigned
/*
* Architectures can set this mask to a combination of PGTBL_P?D_MODIFIED values
- * and let generic vmalloc and ioremap code know when arch_sync_kernel_mappings()
- * needs to be called.
+ * and let generic vmalloc, ioremap and page table update code know when
+ * arch_sync_kernel_mappings() needs to be called.
*/
#ifndef ARCH_PAGE_TABLE_SYNC_MASK
#define ARCH_PAGE_TABLE_SYNC_MASK 0
@@ -1954,10 +1954,11 @@ static inline bool arch_has_pfn_modify_check(void)
/*
* Page Table Modification bits for pgtbl_mod_mask.
*
- * These are used by the p?d_alloc_track*() set of functions an in the generic
- * vmalloc/ioremap code to track at which page-table levels entries have been
- * modified. Based on that the code can better decide when vmalloc and ioremap
- * mapping changes need to be synchronized to other page-tables in the system.
+ * These are used by the p?d_alloc_track*() and p*d_populate_kernel()
+ * functions in the generic vmalloc, ioremap and page table update code
+ * to track at which page-table levels entries have been modified.
+ * Based on that the code can better decide when page table changes need
+ * to be synchronized to other page-tables in the system.
*/
#define __PGTBL_PGD_MODIFIED 0
#define __PGTBL_P4D_MODIFIED 1
diff --git a/mm/kasan/init.c b/mm/kasan/init.c
index ced6b29fcf76..8fce3370c84e 100644
--- a/mm/kasan/init.c
+++ b/mm/kasan/init.c
@@ -13,9 +13,9 @@
#include <linux/mm.h>
#include <linux/pfn.h>
#include <linux/slab.h>
+#include <linux/pgalloc.h>
#include <asm/page.h>
-#include <asm/pgalloc.h>
#include "kasan.h"
@@ -191,7 +191,7 @@ static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
pud_t *pud;
pmd_t *pmd;
- p4d_populate(&init_mm, p4d,
+ p4d_populate_kernel(addr, p4d,
lm_alias(kasan_early_shadow_pud));
pud = pud_offset(p4d, addr);
pud_populate(&init_mm, pud,
@@ -212,7 +212,7 @@ static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
} else {
p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);
pud_init(p);
- p4d_populate(&init_mm, p4d, p);
+ p4d_populate_kernel(addr, p4d, p);
}
}
zero_pud_populate(p4d, addr, next);
@@ -251,10 +251,10 @@ int __ref kasan_populate_early_shadow(const void *shadow_start,
* puds,pmds, so pgd_populate(), pud_populate()
* is noops.
*/
- pgd_populate(&init_mm, pgd,
+ pgd_populate_kernel(addr, pgd,
lm_alias(kasan_early_shadow_p4d));
p4d = p4d_offset(pgd, addr);
- p4d_populate(&init_mm, p4d,
+ p4d_populate_kernel(addr, p4d,
lm_alias(kasan_early_shadow_pud));
pud = pud_offset(p4d, addr);
pud_populate(&init_mm, pud,
@@ -273,7 +273,7 @@ int __ref kasan_populate_early_shadow(const void *shadow_start,
if (!p)
return -ENOMEM;
} else {
- pgd_populate(&init_mm, pgd,
+ pgd_populate_kernel(addr, pgd,
early_alloc(PAGE_SIZE, NUMA_NO_NODE));
}
}
diff --git a/mm/percpu.c b/mm/percpu.c
index d9cbaee92b60..a56f35dcc417 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -3108,7 +3108,7 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
#endif /* BUILD_EMBED_FIRST_CHUNK */
#ifdef BUILD_PAGE_FIRST_CHUNK
-#include <asm/pgalloc.h>
+#include <linux/pgalloc.h>
#ifndef P4D_TABLE_SIZE
#define P4D_TABLE_SIZE PAGE_SIZE
@@ -3134,13 +3134,13 @@ void __init __weak pcpu_populate_pte(unsigned long addr)
if (pgd_none(*pgd)) {
p4d = memblock_alloc_or_panic(P4D_TABLE_SIZE, P4D_TABLE_SIZE);
- pgd_populate(&init_mm, pgd, p4d);
+ pgd_populate_kernel(addr, pgd, p4d);
}
p4d = p4d_offset(pgd, addr);
if (p4d_none(*p4d)) {
pud = memblock_alloc_or_panic(PUD_TABLE_SIZE, PUD_TABLE_SIZE);
- p4d_populate(&init_mm, p4d, pud);
+ p4d_populate_kernel(addr, p4d, pud);
}
pud = pud_offset(p4d, addr);
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 41aa0493eb03..dbd8daccade2 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -27,9 +27,9 @@
#include <linux/spinlock.h>
#include <linux/vmalloc.h>
#include <linux/sched.h>
+#include <linux/pgalloc.h>
#include <asm/dma.h>
-#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include "hugetlb_vmemmap.h"
@@ -229,7 +229,7 @@ p4d_t * __meminit vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node)
if (!p)
return NULL;
pud_init(p);
- p4d_populate(&init_mm, p4d, p);
+ p4d_populate_kernel(addr, p4d, p);
}
return p4d;
}
@@ -241,7 +241,7 @@ pgd_t * __meminit vmemmap_pgd_populate(unsigned long addr, int node)
void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node);
if (!p)
return NULL;
- pgd_populate(&init_mm, pgd, p);
+ pgd_populate_kernel(addr, pgd, p);
}
return pgd;
}
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 f2d2f9598ebb0158a3fe17cda0106d7752e654a2
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025090602-bullwhip-runner-63fe@gregkh' --subject-prefix 'PATCH 6.12.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From f2d2f9598ebb0158a3fe17cda0106d7752e654a2 Mon Sep 17 00:00:00 2001
From: Harry Yoo <harry.yoo(a)oracle.com>
Date: Mon, 18 Aug 2025 11:02:05 +0900
Subject: [PATCH] mm: introduce and use {pgd,p4d}_populate_kernel()
Introduce and use {pgd,p4d}_populate_kernel() in core MM code when
populating PGD and P4D entries for the kernel address space. These
helpers ensure proper synchronization of page tables when updating the
kernel portion of top-level page tables.
Until now, the kernel has relied on each architecture to handle
synchronization of top-level page tables in an ad-hoc manner. For
example, see commit 9b861528a801 ("x86-64, mem: Update all PGDs for direct
mapping and vmemmap mapping changes").
However, this approach has proven fragile for following reasons:
1) It is easy to forget to perform the necessary page table
synchronization when introducing new changes.
For instance, commit 4917f55b4ef9 ("mm/sparse-vmemmap: improve memory
savings for compound devmaps") overlooked the need to synchronize
page tables for the vmemmap area.
2) It is also easy to overlook that the vmemmap and direct mapping areas
must not be accessed before explicit page table synchronization.
For example, commit 8d400913c231 ("x86/vmemmap: handle unpopulated
sub-pmd ranges")) caused crashes by accessing the vmemmap area
before calling sync_global_pgds().
To address this, as suggested by Dave Hansen, introduce _kernel() variants
of the page table population helpers, which invoke architecture-specific
hooks to properly synchronize page tables. These are introduced in a new
header file, include/linux/pgalloc.h, so they can be called from common
code.
They reuse existing infrastructure for vmalloc and ioremap.
Synchronization requirements are determined by ARCH_PAGE_TABLE_SYNC_MASK,
and the actual synchronization is performed by
arch_sync_kernel_mappings().
This change currently targets only x86_64, so only PGD and P4D level
helpers are introduced. Currently, these helpers are no-ops since no
architecture sets PGTBL_{PGD,P4D}_MODIFIED in ARCH_PAGE_TABLE_SYNC_MASK.
In theory, PUD and PMD level helpers can be added later if needed by other
architectures. For now, 32-bit architectures (x86-32 and arm) only handle
PGTBL_PMD_MODIFIED, so p*d_populate_kernel() will never affect them unless
we introduce a PMD level helper.
[harry.yoo(a)oracle.com: fix KASAN build error due to p*d_populate_kernel()]
Link: https://lkml.kernel.org/r/20250822020727.202749-1-harry.yoo@oracle.com
Link: https://lkml.kernel.org/r/20250818020206.4517-3-harry.yoo@oracle.com
Fixes: 8d400913c231 ("x86/vmemmap: handle unpopulated sub-pmd ranges")
Signed-off-by: Harry Yoo <harry.yoo(a)oracle.com>
Suggested-by: Dave Hansen <dave.hansen(a)linux.intel.com>
Acked-by: Kiryl Shutsemau <kas(a)kernel.org>
Reviewed-by: Mike Rapoport (Microsoft) <rppt(a)kernel.org>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes(a)oracle.com>
Acked-by: David Hildenbrand <david(a)redhat.com>
Cc: Alexander Potapenko <glider(a)google.com>
Cc: Alistair Popple <apopple(a)nvidia.com>
Cc: Andrey Konovalov <andreyknvl(a)gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a(a)gmail.com>
Cc: Andy Lutomirski <luto(a)kernel.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar(a)linux.ibm.com>
Cc: Anshuman Khandual <anshuman.khandual(a)arm.com>
Cc: Ard Biesheuvel <ardb(a)kernel.org>
Cc: Arnd Bergmann <arnd(a)arndb.de>
Cc: bibo mao <maobibo(a)loongson.cn>
Cc: Borislav Betkov <bp(a)alien8.de>
Cc: Christoph Lameter (Ampere) <cl(a)gentwo.org>
Cc: Dennis Zhou <dennis(a)kernel.org>
Cc: Dev Jain <dev.jain(a)arm.com>
Cc: Dmitriy Vyukov <dvyukov(a)google.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun(a)intel.com>
Cc: Ingo Molnar <mingo(a)redhat.com>
Cc: Jane Chu <jane.chu(a)oracle.com>
Cc: Joao Martins <joao.m.martins(a)oracle.com>
Cc: Joerg Roedel <joro(a)8bytes.org>
Cc: John Hubbard <jhubbard(a)nvidia.com>
Cc: Kevin Brodsky <kevin.brodsky(a)arm.com>
Cc: Liam Howlett <liam.howlett(a)oracle.com>
Cc: Michal Hocko <mhocko(a)suse.com>
Cc: Oscar Salvador <osalvador(a)suse.de>
Cc: Peter Xu <peterx(a)redhat.com>
Cc: Peter Zijlstra <peterz(a)infradead.org>
Cc: Qi Zheng <zhengqi.arch(a)bytedance.com>
Cc: Ryan Roberts <ryan.roberts(a)arm.com>
Cc: Suren Baghdasaryan <surenb(a)google.com>
Cc: Tejun Heo <tj(a)kernel.org>
Cc: Thomas Gleinxer <tglx(a)linutronix.de>
Cc: Thomas Huth <thuth(a)redhat.com>
Cc: "Uladzislau Rezki (Sony)" <urezki(a)gmail.com>
Cc: Vincenzo Frascino <vincenzo.frascino(a)arm.com>
Cc: Vlastimil Babka <vbabka(a)suse.cz>
Cc: <stable(a)vger.kernel.org>
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
diff --git a/include/linux/pgalloc.h b/include/linux/pgalloc.h
new file mode 100644
index 000000000000..9174fa59bbc5
--- /dev/null
+++ b/include/linux/pgalloc.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _LINUX_PGALLOC_H
+#define _LINUX_PGALLOC_H
+
+#include <linux/pgtable.h>
+#include <asm/pgalloc.h>
+
+/*
+ * {pgd,p4d}_populate_kernel() are defined as macros to allow
+ * compile-time optimization based on the configured page table levels.
+ * Without this, linking may fail because callers (e.g., KASAN) may rely
+ * on calls to these functions being optimized away when passing symbols
+ * that exist only for certain page table levels.
+ */
+#define pgd_populate_kernel(addr, pgd, p4d) \
+ do { \
+ pgd_populate(&init_mm, pgd, p4d); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_PGD_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#define p4d_populate_kernel(addr, p4d, pud) \
+ do { \
+ p4d_populate(&init_mm, p4d, pud); \
+ if (ARCH_PAGE_TABLE_SYNC_MASK & PGTBL_P4D_MODIFIED) \
+ arch_sync_kernel_mappings(addr, addr); \
+ } while (0)
+
+#endif /* _LINUX_PGALLOC_H */
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index ba699df6ef69..2b80fd456c8b 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -1469,8 +1469,8 @@ static inline void modify_prot_commit_ptes(struct vm_area_struct *vma, unsigned
/*
* Architectures can set this mask to a combination of PGTBL_P?D_MODIFIED values
- * and let generic vmalloc and ioremap code know when arch_sync_kernel_mappings()
- * needs to be called.
+ * and let generic vmalloc, ioremap and page table update code know when
+ * arch_sync_kernel_mappings() needs to be called.
*/
#ifndef ARCH_PAGE_TABLE_SYNC_MASK
#define ARCH_PAGE_TABLE_SYNC_MASK 0
@@ -1954,10 +1954,11 @@ static inline bool arch_has_pfn_modify_check(void)
/*
* Page Table Modification bits for pgtbl_mod_mask.
*
- * These are used by the p?d_alloc_track*() set of functions an in the generic
- * vmalloc/ioremap code to track at which page-table levels entries have been
- * modified. Based on that the code can better decide when vmalloc and ioremap
- * mapping changes need to be synchronized to other page-tables in the system.
+ * These are used by the p?d_alloc_track*() and p*d_populate_kernel()
+ * functions in the generic vmalloc, ioremap and page table update code
+ * to track at which page-table levels entries have been modified.
+ * Based on that the code can better decide when page table changes need
+ * to be synchronized to other page-tables in the system.
*/
#define __PGTBL_PGD_MODIFIED 0
#define __PGTBL_P4D_MODIFIED 1
diff --git a/mm/kasan/init.c b/mm/kasan/init.c
index ced6b29fcf76..8fce3370c84e 100644
--- a/mm/kasan/init.c
+++ b/mm/kasan/init.c
@@ -13,9 +13,9 @@
#include <linux/mm.h>
#include <linux/pfn.h>
#include <linux/slab.h>
+#include <linux/pgalloc.h>
#include <asm/page.h>
-#include <asm/pgalloc.h>
#include "kasan.h"
@@ -191,7 +191,7 @@ static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
pud_t *pud;
pmd_t *pmd;
- p4d_populate(&init_mm, p4d,
+ p4d_populate_kernel(addr, p4d,
lm_alias(kasan_early_shadow_pud));
pud = pud_offset(p4d, addr);
pud_populate(&init_mm, pud,
@@ -212,7 +212,7 @@ static int __ref zero_p4d_populate(pgd_t *pgd, unsigned long addr,
} else {
p = early_alloc(PAGE_SIZE, NUMA_NO_NODE);
pud_init(p);
- p4d_populate(&init_mm, p4d, p);
+ p4d_populate_kernel(addr, p4d, p);
}
}
zero_pud_populate(p4d, addr, next);
@@ -251,10 +251,10 @@ int __ref kasan_populate_early_shadow(const void *shadow_start,
* puds,pmds, so pgd_populate(), pud_populate()
* is noops.
*/
- pgd_populate(&init_mm, pgd,
+ pgd_populate_kernel(addr, pgd,
lm_alias(kasan_early_shadow_p4d));
p4d = p4d_offset(pgd, addr);
- p4d_populate(&init_mm, p4d,
+ p4d_populate_kernel(addr, p4d,
lm_alias(kasan_early_shadow_pud));
pud = pud_offset(p4d, addr);
pud_populate(&init_mm, pud,
@@ -273,7 +273,7 @@ int __ref kasan_populate_early_shadow(const void *shadow_start,
if (!p)
return -ENOMEM;
} else {
- pgd_populate(&init_mm, pgd,
+ pgd_populate_kernel(addr, pgd,
early_alloc(PAGE_SIZE, NUMA_NO_NODE));
}
}
diff --git a/mm/percpu.c b/mm/percpu.c
index d9cbaee92b60..a56f35dcc417 100644
--- a/mm/percpu.c
+++ b/mm/percpu.c
@@ -3108,7 +3108,7 @@ int __init pcpu_embed_first_chunk(size_t reserved_size, size_t dyn_size,
#endif /* BUILD_EMBED_FIRST_CHUNK */
#ifdef BUILD_PAGE_FIRST_CHUNK
-#include <asm/pgalloc.h>
+#include <linux/pgalloc.h>
#ifndef P4D_TABLE_SIZE
#define P4D_TABLE_SIZE PAGE_SIZE
@@ -3134,13 +3134,13 @@ void __init __weak pcpu_populate_pte(unsigned long addr)
if (pgd_none(*pgd)) {
p4d = memblock_alloc_or_panic(P4D_TABLE_SIZE, P4D_TABLE_SIZE);
- pgd_populate(&init_mm, pgd, p4d);
+ pgd_populate_kernel(addr, pgd, p4d);
}
p4d = p4d_offset(pgd, addr);
if (p4d_none(*p4d)) {
pud = memblock_alloc_or_panic(PUD_TABLE_SIZE, PUD_TABLE_SIZE);
- p4d_populate(&init_mm, p4d, pud);
+ p4d_populate_kernel(addr, p4d, pud);
}
pud = pud_offset(p4d, addr);
diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 41aa0493eb03..dbd8daccade2 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -27,9 +27,9 @@
#include <linux/spinlock.h>
#include <linux/vmalloc.h>
#include <linux/sched.h>
+#include <linux/pgalloc.h>
#include <asm/dma.h>
-#include <asm/pgalloc.h>
#include <asm/tlbflush.h>
#include "hugetlb_vmemmap.h"
@@ -229,7 +229,7 @@ p4d_t * __meminit vmemmap_p4d_populate(pgd_t *pgd, unsigned long addr, int node)
if (!p)
return NULL;
pud_init(p);
- p4d_populate(&init_mm, p4d, p);
+ p4d_populate_kernel(addr, p4d, p);
}
return p4d;
}
@@ -241,7 +241,7 @@ pgd_t * __meminit vmemmap_pgd_populate(unsigned long addr, int node)
void *p = vmemmap_alloc_block_zero(PAGE_SIZE, node);
if (!p)
return NULL;
- pgd_populate(&init_mm, pgd, p);
+ pgd_populate_kernel(addr, pgd, p);
}
return pgd;
}
From: Conor Dooley <conor.dooley(a)microchip.com>
The kernel uses the standard rustc targets for non-x86 targets, and out
of those only 64-bit arm's target has kcfi support enabled. For x86, the
custom 64-bit target enables kcfi.
The HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC config option that allows
CFI_CLANG to be used in combination with RUST does not check whether the
rustc target supports kcfi. This breaks the build on riscv (and
presumably 32-bit arm) when CFI_CLANG and RUST are enabled at the same
time.
Ordinarily, a rustc-option check would be used to detect target support
but unfortunately rustc-option filters out the target for reasons given
in commit 46e24a545cdb4 ("rust: kasan/kbuild: fix missing flags on first
build"). As a result, if the host supports kcfi but the target does not,
e.g. when building for riscv on x86_64, the build would remain broken.
Instead, make HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC depend on the only
two architectures where the target used supports it to fix the build.
CC: stable(a)vger.kernel.org
Fixes: ca627e636551e ("rust: cfi: add support for CFI_CLANG with Rust")
Signed-off-by: Conor Dooley <conor.dooley(a)microchip.com>
---
CC: Paul Walmsley <paul.walmsley(a)sifive.com>
CC: Palmer Dabbelt <palmer(a)dabbelt.com>
CC: Alexandre Ghiti <alex(a)ghiti.fr>
CC: Miguel Ojeda <ojeda(a)kernel.org>
CC: Alex Gaynor <alex.gaynor(a)gmail.com>
CC: Boqun Feng <boqun.feng(a)gmail.com>
CC: Gary Guo <gary(a)garyguo.net>
CC: "Björn Roy Baron" <bjorn3_gh(a)protonmail.com>
CC: Benno Lossin <lossin(a)kernel.org>
CC: Andreas Hindborg <a.hindborg(a)kernel.org>
CC: Alice Ryhl <aliceryhl(a)google.com>
CC: Trevor Gross <tmgross(a)umich.edu>
CC: Danilo Krummrich <dakr(a)kernel.org>
CC: Kees Cook <kees(a)kernel.org>
CC: Sami Tolvanen <samitolvanen(a)google.com>
CC: Matthew Maurer <mmaurer(a)google.com>
CC: "Peter Zijlstra (Intel)" <peterz(a)infradead.org>
CC: linux-kernel(a)vger.kernel.org
CC: linux-riscv(a)lists.infradead.org
CC: rust-for-linux(a)vger.kernel.org
---
arch/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/Kconfig b/arch/Kconfig
index d1b4ffd6e0856..880cddff5eda7 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -917,6 +917,7 @@ config HAVE_CFI_ICALL_NORMALIZE_INTEGERS_RUSTC
def_bool y
depends on HAVE_CFI_ICALL_NORMALIZE_INTEGERS_CLANG
depends on RUSTC_VERSION >= 107900
+ depends on ARM64 || X86_64
# With GCOV/KASAN we need this fix: https://github.com/rust-lang/rust/pull/129373
depends on (RUSTC_LLVM_VERSION >= 190103 && RUSTC_VERSION >= 108200) || \
(!GCOV_KERNEL && !KASAN_GENERIC && !KASAN_SW_TAGS)
--
2.47.2
If rdma_dev_init_net() has an early return because the supplied net is
the default init_net, we need to call rdma_nl_net_exit() before
returning.
Fixes: 4e0f7b907072 ("RDMA/core: Implement compat device/sysfs tree in net namespace")
Cc: stable(a)vger.kernel.org
Signed-off-by: Håkon Bugge <haakon.bugge(a)oracle.com>
---
drivers/infiniband/core/device.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/infiniband/core/device.c b/drivers/infiniband/core/device.c
index 3145cb34a1d20..ec5642e70c5db 100644
--- a/drivers/infiniband/core/device.c
+++ b/drivers/infiniband/core/device.c
@@ -1203,8 +1203,10 @@ static __net_init int rdma_dev_init_net(struct net *net)
return ret;
/* No need to create any compat devices in default init_net. */
- if (net_eq(net, &init_net))
+ if (net_eq(net, &init_net)) {
+ rdma_nl_net_exit(rnet);
return 0;
+ }
ret = xa_alloc(&rdma_nets, &rnet->id, rnet, xa_limit_32b, GFP_KERNEL);
if (ret) {
--
2.43.5
On Sun, 7 Sep 2025 16:32:03 +0200 Bernard Pidoux wrote:
> While applying netrom PATCH net v4
> patch says that
> it is malformed on line 12.
FWIW the version I received is completely mangled. There's a leading
space before each +. You can try B4 relay if your mail server is giving
you grief.
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 e1a453a57bc76be678bd746f84e3d73f378a9511
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable(a)vger.kernel.org>' --in-reply-to '2025041706-ambiance-zen-5f4e@gregkh' --subject-prefix 'PATCH 6.1.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From e1a453a57bc76be678bd746f84e3d73f378a9511 Mon Sep 17 00:00:00 2001
From: Steven Rostedt <rostedt(a)goodmis.org>
Date: Mon, 7 Apr 2025 15:41:39 -0400
Subject: [PATCH] tracing: Do not add length to print format in synthetic
events
The following causes a vsnprintf fault:
# echo 's:wake_lat char[] wakee; u64 delta;' >> /sys/kernel/tracing/dynamic_events
# echo 'hist:keys=pid:ts=common_timestamp.usecs if !(common_flags & 0x18)' > /sys/kernel/tracing/events/sched/sched_waking/trigger
# echo 'hist:keys=next_pid:delta=common_timestamp.usecs-$ts:onmatch(sched.sched_waking).trace(wake_lat,next_comm,$delta)' > /sys/kernel/tracing/events/sched/sched_switch/trigger
Because the synthetic event's "wakee" field is created as a dynamic string
(even though the string copied is not). The print format to print the
dynamic string changed from "%*s" to "%s" because another location
(__set_synth_event_print_fmt()) exported this to user space, and user
space did not need that. But it is still used in print_synth_event(), and
the output looks like:
<idle>-0 [001] d..5. 193.428167: wake_lat: wakee=(efault)sshd-sessiondelta=155
sshd-session-879 [001] d..5. 193.811080: wake_lat: wakee=(efault)kworker/u34:5delta=58
<idle>-0 [002] d..5. 193.811198: wake_lat: wakee=(efault)bashdelta=91
bash-880 [002] d..5. 193.811371: wake_lat: wakee=(efault)kworker/u35:2delta=21
<idle>-0 [001] d..5. 193.811516: wake_lat: wakee=(efault)sshd-sessiondelta=129
sshd-session-879 [001] d..5. 193.967576: wake_lat: wakee=(efault)kworker/u34:5delta=50
The length isn't needed as the string is always nul terminated. Just print
the string and not add the length (which was hard coded to the max string
length anyway).
Cc: stable(a)vger.kernel.org
Cc: Mathieu Desnoyers <mathieu.desnoyers(a)efficios.com>
Cc: Tom Zanussi <zanussi(a)kernel.org>
Cc: Douglas Raillard <douglas.raillard(a)arm.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat(a)kernel.org>
Link: https://lore.kernel.org/20250407154139.69955768@gandalf.local.home
Fixes: 4d38328eb442d ("tracing: Fix synth event printk format for str fields");
Signed-off-by: Steven Rostedt (Google) <rostedt(a)goodmis.org>
diff --git a/kernel/trace/trace_events_synth.c b/kernel/trace/trace_events_synth.c
index 969f48742d72..33cfbd4ed76d 100644
--- a/kernel/trace/trace_events_synth.c
+++ b/kernel/trace/trace_events_synth.c
@@ -370,7 +370,6 @@ static enum print_line_t print_synth_event(struct trace_iterator *iter,
union trace_synth_field *data = &entry->fields[n_u64];
trace_seq_printf(s, print_fmt, se->fields[i]->name,
- STR_VAR_LEN_MAX,
(char *)entry + data->as_dynamic.offset,
i == se->n_fields - 1 ? "" : " ");
n_u64++;