lineage-22.2
31031 Commits
| Author | SHA1 | Message | Date | |
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Sebastiano Barezzi
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fcedce48bf |
Merge remote-tracking branch 'qcom_sm8250/lineage-20' into lineage-22.2
Change-Id: I41d3b2e791439f1ef1d34ced81a40912461bb3b0 |
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Alexander Winkowski
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fa0cd620e3 |
ANDROID: Update CFI patchset from android11-5.4
Change-Id: Iff956ce7c2b89d3a442b0b81deba0da323f5d18b Signed-off-by: Alexander Winkowski <dereference23@outlook.com> |
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Ard Biesheuvel
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90e35adc2c |
bpf: add __weak hook for allocating executable memory
By default, BPF uses module_alloc() to allocate executable memory, but this is not necessary on all arches and potentially undesirable on some of them. So break out the module_alloc() and module_memfree() calls into __weak functions to allow them to be overridden in arch code. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Danny Lin <danny@kdrag0n.dev> Change-Id: I582794881942bc0b766515861f2232354860536b |
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Alan Maguire
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327fcc87ed |
bpf: Use dedicated bpf_trace_printk event instead of trace_printk()
The bpf helper bpf_trace_printk() uses trace_printk() under the hood. This leads to an alarming warning message originating from trace buffer allocation which occurs the first time a program using bpf_trace_printk() is loaded. We can instead create a trace event for bpf_trace_printk() and enable it in-kernel when/if we encounter a program using the bpf_trace_printk() helper. With this approach, trace_printk() is not used directly and no warning message appears. This work was started by Steven (see Link) and finished by Alan; added Steven's Signed-off-by with his permission. Change-Id: Ie1e4cf1dce934e62613440b5081cb757cdbe982c Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/r/20200628194334.6238b933@oasis.local.home Link: https://lore.kernel.org/bpf/1594641154-18897-2-git-send-email-alan.maguire@oracle.com |
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Michael Bestas
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c22009ad76 |
Merge tag 'ASB-2025-01-05_4.19-stable' of https://android.googlesource.com/kernel/common into android13-4.19-kona
https://source.android.com/docs/security/bulletin/2025-01-01 * tag 'ASB-2025-01-05_4.19-stable' of https://android.googlesource.com/kernel/common: (132 commits) Revert "UPSTREAM: unicode: Don't special case ignorable code points" Reapply "UPSTREAM: unicode: Don't special case ignorable code points" Revert "UPSTREAM: unicode: Don't special case ignorable code points" Linux 4.19.325 sh: intc: Fix use-after-free bug in register_intc_controller() modpost: remove incorrect code in do_eisa_entry() 9p/xen: fix release of IRQ 9p/xen: fix init sequence block: return unsigned int from bdev_io_min jffs2: fix use of uninitialized variable ubi: fastmap: Fix duplicate slab cache names while attaching ubifs: Correct the total block count by deducting journal reservation rtc: check if __rtc_read_time was successful in rtc_timer_do_work() NFSv4.0: Fix a use-after-free problem in the asynchronous open() um: Fix the return value of elf_core_copy_task_fpregs rpmsg: glink: Propagate TX failures in intentless mode as well NFSD: Prevent a potential integer overflow lib: string_helpers: silence snprintf() output truncation warning usb: dwc3: gadget: Fix checking for number of TRBs left media: wl128x: Fix atomicity violation in fmc_send_cmd() ... Conflicts: arch/arm64/boot/dts/vendor/bindings/clock/adi,axi-clkgen.yaml arch/arm64/boot/dts/vendor/bindings/clock/axi-clkgen.txt drivers/rpmsg/qcom_glink_native.c Change-Id: Iea6ddf20dfaa4419f6e0b2efcee1890bfa8e2554 |
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althafvly
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bac62ca790 |
Merge branch 'lineage-20' of https://github.com/LineageOS/android_kernel_qcom_sm8250 into lineage-22.1
Change-Id: Ib5c234d95e3f41cfa458ac48d666fbab920b0b6e |
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Michael Bestas
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4ea8fcca99 |
Merge tag 'ASB-2024-12-05_4.19-stable' of https://android.googlesource.com/kernel/common into android13-4.19-kona
https://source.android.com/docs/security/bulletin/2024-12-01 * tag 'ASB-2024-12-05_4.19-stable' of https://android.googlesource.com/kernel/common: (401 commits) Linux 4.19.324 9p: fix slab cache name creation for real net: usb: qmi_wwan: add Fibocom FG132 0x0112 composition fs: Fix uninitialized value issue in from_kuid and from_kgid powerpc/powernv: Free name on error in opal_event_init() sound: Make CONFIG_SND depend on INDIRECT_IOMEM instead of UML bpf: use kvzmalloc to allocate BPF verifier environment HID: multitouch: Add quirk for HONOR MagicBook Art 14 touchpad 9p: Avoid creating multiple slab caches with the same name ALSA: usb-audio: Add endianness annotations vsock/virtio: Initialization of the dangling pointer occurring in vsk->trans hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer ALSA: usb-audio: Add quirks for Dell WD19 dock ALSA: usb-audio: Support jack detection on Dell dock ALSA: usb-audio: Add custom mixer status quirks for RME CC devices ALSA: pcm: Return 0 when size < start_threshold in capture ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove() irqchip/gic-v3: Force propagation of the active state with a read-back USB: serial: option: add Quectel RG650V USB: serial: option: add Fibocom FG132 0x0112 composition ... Conflicts: drivers/usb/dwc3/core.c drivers/usb/dwc3/core.h net/qrtr/qrtr.c Change-Id: I328847813eb875d25c4aa35dcc7ba58ad09b53ae |
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Greg Kroah-Hartman
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874391c94e |
Merge 4.19.325 into android-4.19-stable
Changes in 4.19.325
netlink: terminate outstanding dump on socket close
ocfs2: uncache inode which has failed entering the group
nilfs2: fix null-ptr-deref in block_touch_buffer tracepoint
ocfs2: fix UBSAN warning in ocfs2_verify_volume()
nilfs2: fix null-ptr-deref in block_dirty_buffer tracepoint
Revert "mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K"
media: dvbdev: fix the logic when DVB_DYNAMIC_MINORS is not set
kbuild: Use uname for LINUX_COMPILE_HOST detection
mm: revert "mm: shmem: fix data-race in shmem_getattr()"
ASoC: Intel: bytcr_rt5640: Add DMI quirk for Vexia Edu Atla 10 tablet
mac80211: fix user-power when emulating chanctx
selftests/watchdog-test: Fix system accidentally reset after watchdog-test
x86/amd_nb: Fix compile-testing without CONFIG_AMD_NB
net: usb: qmi_wwan: add Quectel RG650V
proc/softirqs: replace seq_printf with seq_put_decimal_ull_width
nvme: fix metadata handling in nvme-passthrough
initramfs: avoid filename buffer overrun
m68k: mvme147: Fix SCSI controller IRQ numbers
m68k: mvme16x: Add and use "mvme16x.h"
m68k: mvme147: Reinstate early console
acpi/arm64: Adjust error handling procedure in gtdt_parse_timer_block()
s390/syscalls: Avoid creation of arch/arch/ directory
hfsplus: don't query the device logical block size multiple times
EDAC/fsl_ddr: Fix bad bit shift operations
crypto: pcrypt - Call crypto layer directly when padata_do_parallel() return -EBUSY
crypto: cavium - Fix the if condition to exit loop after timeout
crypto: bcm - add error check in the ahash_hmac_init function
crypto: cavium - Fix an error handling path in cpt_ucode_load_fw()
time: Fix references to _msecs_to_jiffies() handling of values
soc: qcom: geni-se: fix array underflow in geni_se_clk_tbl_get()
mmc: mmc_spi: drop buggy snprintf()
ARM: dts: cubieboard4: Fix DCDC5 regulator constraints
regmap: irq: Set lockdep class for hierarchical IRQ domains
firmware: arm_scpi: Check the DVFS OPP count returned by the firmware
drm/mm: Mark drm_mm_interval_tree*() functions with __maybe_unused
wifi: ath9k: add range check for conn_rsp_epid in htc_connect_service()
drm/omap: Fix locking in omap_gem_new_dmabuf()
bpf: Fix the xdp_adjust_tail sample prog issue
wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_config_scan()
drm/etnaviv: consolidate hardware fence handling in etnaviv_gpu
drm/etnaviv: dump: fix sparse warnings
drm/etnaviv: fix power register offset on GC300
drm/etnaviv: hold GPU lock across perfmon sampling
net: rfkill: gpio: Add check for clk_enable()
ALSA: us122l: Use snd_card_free_when_closed() at disconnection
ALSA: caiaq: Use snd_card_free_when_closed() at disconnection
ALSA: 6fire: Release resources at card release
netpoll: Use rcu_access_pointer() in netpoll_poll_lock
trace/trace_event_perf: remove duplicate samples on the first tracepoint event
powerpc/vdso: Flag VDSO64 entry points as functions
mfd: da9052-spi: Change read-mask to write-mask
cpufreq: loongson2: Unregister platform_driver on failure
mtd: rawnand: atmel: Fix possible memory leak
RDMA/bnxt_re: Check cqe flags to know imm_data vs inv_irkey
mfd: rt5033: Fix missing regmap_del_irq_chip()
scsi: bfa: Fix use-after-free in bfad_im_module_exit()
scsi: fusion: Remove unused variable 'rc'
scsi: qedi: Fix a possible memory leak in qedi_alloc_and_init_sb()
ocfs2: fix uninitialized value in ocfs2_file_read_iter()
powerpc/sstep: make emulate_vsx_load and emulate_vsx_store static
fbdev/sh7760fb: Alloc DMA memory from hardware device
fbdev: sh7760fb: Fix a possible memory leak in sh7760fb_alloc_mem()
dt-bindings: clock: adi,axi-clkgen: convert old binding to yaml format
dt-bindings: clock: axi-clkgen: include AXI clk
clk: axi-clkgen: use devm_platform_ioremap_resource() short-hand
clk: clk-axi-clkgen: make sure to enable the AXI bus clock
perf probe: Correct demangled symbols in C++ program
PCI: cpqphp: Use PCI_POSSIBLE_ERROR() to check config reads
PCI: cpqphp: Fix PCIBIOS_* return value confusion
m68k: mcfgpio: Fix incorrect register offset for CONFIG_M5441x
m68k: coldfire/device.c: only build FEC when HW macros are defined
rpmsg: glink: Add TX_DATA_CONT command while sending
rpmsg: glink: Send READ_NOTIFY command in FIFO full case
rpmsg: glink: Fix GLINK command prefix
rpmsg: glink: use only lower 16-bits of param2 for CMD_OPEN name length
NFSD: Prevent NULL dereference in nfsd4_process_cb_update()
NFSD: Cap the number of bytes copied by nfs4_reset_recoverydir()
vfio/pci: Properly hide first-in-list PCIe extended capability
power: supply: core: Remove might_sleep() from power_supply_put()
net: usb: lan78xx: Fix memory leak on device unplug by freeing PHY device
tg3: Set coherent DMA mask bits to 31 for BCM57766 chipsets
net: usb: lan78xx: Fix refcounting and autosuspend on invalid WoL configuration
marvell: pxa168_eth: fix call balance of pep->clk handling routines
net: stmmac: dwmac-socfpga: Set RX watchdog interrupt as broken
usb: using mutex lock and supporting O_NONBLOCK flag in iowarrior_read()
USB: chaoskey: fail open after removal
USB: chaoskey: Fix possible deadlock chaoskey_list_lock
misc: apds990x: Fix missing pm_runtime_disable()
apparmor: fix 'Do simple duplicate message elimination'
usb: ehci-spear: fix call balance of sehci clk handling routines
ext4: supress data-race warnings in ext4_free_inodes_{count,set}()
ext4: fix FS_IOC_GETFSMAP handling
jfs: xattr: check invalid xattr size more strictly
ASoC: codecs: Fix atomicity violation in snd_soc_component_get_drvdata()
PCI: Fix use-after-free of slot->bus on hot remove
tty: ldsic: fix tty_ldisc_autoload sysctl's proc_handler
Bluetooth: Fix type of len in rfcomm_sock_getsockopt{,_old}()
ALSA: usb-audio: Fix potential out-of-bound accesses for Extigy and Mbox devices
Revert "usb: gadget: composite: fix OS descriptors w_value logic"
serial: sh-sci: Clean sci_ports[0] after at earlycon exit
Revert "serial: sh-sci: Clean sci_ports[0] after at earlycon exit"
netfilter: ipset: add missing range check in bitmap_ip_uadt
spi: Fix acpi deferred irq probe
ubi: wl: Put source PEB into correct list if trying locking LEB failed
um: ubd: Do not use drvdata in release
um: net: Do not use drvdata in release
serial: 8250: omap: Move pm_runtime_get_sync
um: vector: Do not use drvdata in release
sh: cpuinfo: Fix a warning for CONFIG_CPUMASK_OFFSTACK
arm64: tls: Fix context-switching of tpidrro_el0 when kpti is enabled
block: fix ordering between checking BLK_MQ_S_STOPPED request adding
HID: wacom: Interpret tilt data from Intuos Pro BT as signed values
media: wl128x: Fix atomicity violation in fmc_send_cmd()
usb: dwc3: gadget: Fix checking for number of TRBs left
lib: string_helpers: silence snprintf() output truncation warning
NFSD: Prevent a potential integer overflow
rpmsg: glink: Propagate TX failures in intentless mode as well
um: Fix the return value of elf_core_copy_task_fpregs
NFSv4.0: Fix a use-after-free problem in the asynchronous open()
rtc: check if __rtc_read_time was successful in rtc_timer_do_work()
ubifs: Correct the total block count by deducting journal reservation
ubi: fastmap: Fix duplicate slab cache names while attaching
jffs2: fix use of uninitialized variable
block: return unsigned int from bdev_io_min
9p/xen: fix init sequence
9p/xen: fix release of IRQ
modpost: remove incorrect code in do_eisa_entry()
sh: intc: Fix use-after-free bug in register_intc_controller()
Linux 4.19.325
Change-Id: I50250c8bd11f9ff4b40da75225c1cfb060e0c258
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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Levi Yun
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9b6d18b6e8 |
trace/trace_event_perf: remove duplicate samples on the first tracepoint event
[ Upstream commit afe5960dc208fe069ddaaeb0994d857b24ac19d1 ]
When a tracepoint event is created with attr.freq = 1,
'hwc->period_left' is not initialized correctly. As a result,
in the perf_swevent_overflow() function, when the first time the event occurs,
it calculates the event overflow and the perf_swevent_set_period() returns 3,
this leads to the event are recorded for three duplicate times.
Step to reproduce:
1. Enable the tracepoint event & starting tracing
$ echo 1 > /sys/kernel/tracing/events/module/module_free
$ echo 1 > /sys/kernel/tracing/tracing_on
2. Record with perf
$ perf record -a --strict-freq -F 1 -e "module:module_free"
3. Trigger module_free event.
$ modprobe -i sunrpc
$ modprobe -r sunrpc
Result:
- Trace pipe result:
$ cat trace_pipe
modprobe-174509 [003] ..... 6504.868896: module_free: sunrpc
- perf sample:
modprobe 174509 [003] 6504.868980: module:module_free: sunrpc
modprobe 174509 [003] 6504.868980: module:module_free: sunrpc
modprobe 174509 [003] 6504.868980: module:module_free: sunrpc
By setting period_left via perf_swevent_set_period() as other sw_event did,
This problem could be solved.
After patch:
- Trace pipe result:
$ cat trace_pipe
modprobe 1153096 [068] 613468.867774: module:module_free: xfs
- perf sample
modprobe 1153096 [068] 613468.867794: module:module_free: xfs
Link: https://lore.kernel.org/20240913021347.595330-1-yeoreum.yun@arm.com
Fixes:
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Miguel Ojeda
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9a7e518015 |
time: Fix references to _msecs_to_jiffies() handling of values
[ Upstream commit 92b043fd995a63a57aae29ff85a39b6f30cd440c ] The details about the handling of the "normal" values were moved to the _msecs_to_jiffies() helpers in commit |
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Greg Kroah-Hartman
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4f94b88d7d |
Merge 4.19.324 into android-4.19-stable
Changes in 4.19.324
arm64: dts: rockchip: Fix rt5651 compatible value on rk3399-sapphire-excavator
ARM: dts: rockchip: fix rk3036 acodec node
ARM: dts: rockchip: drop grf reference from rk3036 hdmi
ARM: dts: rockchip: Fix the realtek audio codec on rk3036-kylin
HID: core: zero-initialize the report buffer
security/keys: fix slab-out-of-bounds in key_task_permission
sctp: properly validate chunk size in sctp_sf_ootb()
can: c_can: fix {rx,tx}_errors statistics
net: hns3: fix kernel crash when uninstalling driver
media: stb0899_algo: initialize cfr before using it
media: dvbdev: prevent the risk of out of memory access
media: dvb_frontend: don't play tricks with underflow values
media: adv7604: prevent underflow condition when reporting colorspace
ALSA: firewire-lib: fix return value on fail in amdtp_tscm_init()
media: s5p-jpeg: prevent buffer overflows
media: cx24116: prevent overflows on SNR calculus
media: v4l2-tpg: prevent the risk of a division by zero
drm/amdgpu: add missing size check in amdgpu_debugfs_gprwave_read()
drm/amdgpu: prevent NULL pointer dereference if ATIF is not supported
dm cache: correct the number of origin blocks to match the target length
dm cache: fix out-of-bounds access to the dirty bitset when resizing
dm cache: optimize dirty bit checking with find_next_bit when resizing
dm cache: fix potential out-of-bounds access on the first resume
dm-unstriped: cast an operand to sector_t to prevent potential uint32_t overflow
nfs: Fix KMSAN warning in decode_getfattr_attrs()
btrfs: reinitialize delayed ref list after deleting it from the list
bonding (gcc13): synchronize bond_{a,t}lb_xmit() types
net: bridge: xmit: make sure we have at least eth header len bytes
media: uvcvideo: Skip parsing frames of type UVC_VS_UNDEFINED in uvc_parse_format
fs/proc: fix compile warning about variable 'vmcore_mmap_ops'
usb: musb: sunxi: Fix accessing an released usb phy
USB: serial: io_edgeport: fix use after free in debug printk
USB: serial: qcserial: add support for Sierra Wireless EM86xx
USB: serial: option: add Fibocom FG132 0x0112 composition
USB: serial: option: add Quectel RG650V
irqchip/gic-v3: Force propagation of the active state with a read-back
ocfs2: remove entry once instead of null-ptr-dereference in ocfs2_xa_remove()
ALSA: pcm: Return 0 when size < start_threshold in capture
ALSA: usb-audio: Add custom mixer status quirks for RME CC devices
ALSA: usb-audio: Support jack detection on Dell dock
ALSA: usb-audio: Add quirks for Dell WD19 dock
hv_sock: Initializing vsk->trans to NULL to prevent a dangling pointer
vsock/virtio: Initialization of the dangling pointer occurring in vsk->trans
ALSA: usb-audio: Add endianness annotations
9p: Avoid creating multiple slab caches with the same name
HID: multitouch: Add quirk for HONOR MagicBook Art 14 touchpad
bpf: use kvzmalloc to allocate BPF verifier environment
sound: Make CONFIG_SND depend on INDIRECT_IOMEM instead of UML
powerpc/powernv: Free name on error in opal_event_init()
fs: Fix uninitialized value issue in from_kuid and from_kgid
net: usb: qmi_wwan: add Fibocom FG132 0x0112 composition
9p: fix slab cache name creation for real
Linux 4.19.324
Change-Id: Ib8e7c89304d2c2cc72aea03446ea40a8704b41ec
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
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Rik van Riel
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44d3e3d864 |
bpf: use kvzmalloc to allocate BPF verifier environment
[ Upstream commit 434247637c66e1be2bc71a9987d4c3f0d8672387 ] The kzmalloc call in bpf_check can fail when memory is very fragmented, which in turn can lead to an OOM kill. Use kvzmalloc to fall back to vmalloc when memory is too fragmented to allocate an order 3 sized bpf verifier environment. Admittedly this is not a very common case, and only happens on systems where memory has already been squeezed close to the limit, but this does not seem like much of a hot path, and it's a simple enough fix. Signed-off-by: Rik van Riel <riel@surriel.com> Reviewed-by: Shakeel Butt <shakeel.butt@linux.dev> Link: https://lore.kernel.org/r/20241008170735.16766766@imladris.surriel.com Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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Greg Kroah-Hartman
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2d76dea417 |
Merge 4.19.323 into android-4.19-stable
Changes in 4.19.323 staging: iio: frequency: ad9833: Get frequency value statically staging: iio: frequency: ad9833: Load clock using clock framework staging: iio: frequency: ad9834: Validate frequency parameter value usbnet: ipheth: fix carrier detection in modes 1 and 4 net: ethernet: use ip_hdrlen() instead of bit shift net: phy: vitesse: repair vsc73xx autonegotiation scripts: kconfig: merge_config: config files: add a trailing newline arm64: dts: rockchip: override BIOS_DISABLE signal via GPIO hog on RK3399 Puma net/mlx5: Update the list of the PCI supported devices net: ftgmac100: Enable TX interrupt to avoid TX timeout net: dpaa: Pad packets to ETH_ZLEN soundwire: stream: Revert "soundwire: stream: fix programming slave ports for non-continous port maps" selftests/vm: remove call to ksft_set_plan() selftests/kcmp: remove call to ksft_set_plan() ASoC: allow module autoloading for table db1200_pids pinctrl: at91: make it work with current gpiolib microblaze: don't treat zero reserved memory regions as error net: ftgmac100: Ensure tx descriptor updates are visible wifi: iwlwifi: mvm: fix iwl_mvm_max_scan_ie_fw_cmd_room() wifi: iwlwifi: mvm: don't wait for tx queues if firmware is dead ASoC: tda7419: fix module autoloading spi: bcm63xx: Enable module autoloading x86/hyperv: Set X86_FEATURE_TSC_KNOWN_FREQ when Hyper-V provides frequency ocfs2: add bounds checking to ocfs2_xattr_find_entry() ocfs2: strict bound check before memcmp in ocfs2_xattr_find_entry() gpio: prevent potential speculation leaks in gpio_device_get_desc() USB: serial: pl2303: add device id for Macrosilicon MS3020 ACPI: PMIC: Remove unneeded check in tps68470_pmic_opregion_probe() wifi: ath9k: fix parameter check in ath9k_init_debug() wifi: ath9k: Remove error checks when creating debugfs entries netfilter: nf_tables: elements with timeout below CONFIG_HZ never expire wifi: cfg80211: fix UBSAN noise in cfg80211_wext_siwscan() wifi: cfg80211: fix two more possible UBSAN-detected off-by-one errors wifi: mac80211: use two-phase skb reclamation in ieee80211_do_stop() can: bcm: Clear bo->bcm_proc_read after remove_proc_entry(). Bluetooth: btusb: Fix not handling ZPL/short-transfer block, bfq: fix possible UAF for bfqq->bic with merge chain block, bfq: choose the last bfqq from merge chain in bfq_setup_cooperator() block, bfq: don't break merge chain in bfq_split_bfqq() spi: ppc4xx: handle irq_of_parse_and_map() errors spi: ppc4xx: Avoid returning 0 when failed to parse and map IRQ ARM: versatile: fix OF node leak in CPUs prepare reset: berlin: fix OF node leak in probe() error path clocksource/drivers/qcom: Add missing iounmap() on errors in msm_dt_timer_init() hwmon: (max16065) Fix overflows seen when writing limits mtd: slram: insert break after errors in parsing the map hwmon: (ntc_thermistor) fix module autoloading power: supply: max17042_battery: Fix SOC threshold calc w/ no current sense fbdev: hpfb: Fix an error handling path in hpfb_dio_probe() drm/stm: Fix an error handling path in stm_drm_platform_probe() drm/amd: fix typo drm/amdgpu: Replace one-element array with flexible-array member drm/amdgpu: properly handle vbios fake edid sizing drm/radeon: Replace one-element array with flexible-array member drm/radeon: properly handle vbios fake edid sizing drm/rockchip: vop: Allow 4096px width scaling drm/radeon/evergreen_cs: fix int overflow errors in cs track offsets jfs: fix out-of-bounds in dbNextAG() and diAlloc() drm/msm/a5xx: properly clear preemption records on resume drm/msm/a5xx: fix races in preemption evaluation stage ipmi: docs: don't advertise deprecated sysfs entries drm/msm: fix %s null argument error xen: use correct end address of kernel for conflict checking xen/swiotlb: simplify range_straddles_page_boundary() xen/swiotlb: add alignment check for dma buffers selftests/bpf: Fix error compiling test_lru_map.c xz: cleanup CRC32 edits from 2018 kthread: add kthread_work tracepoints kthread: fix task state in kthread worker if being frozen jbd2: introduce/export functions jbd2_journal_submit|finish_inode_data_buffers() ext4: clear EXT4_GROUP_INFO_WAS_TRIMMED_BIT even mount with discard smackfs: Use rcu_assign_pointer() to ensure safe assignment in smk_set_cipso ext4: avoid negative min_clusters in find_group_orlov() ext4: return error on ext4_find_inline_entry ext4: avoid OOB when system.data xattr changes underneath the filesystem nilfs2: fix potential null-ptr-deref in nilfs_btree_insert() nilfs2: determine empty node blocks as corrupted nilfs2: fix potential oob read in nilfs_btree_check_delete() perf sched timehist: Fix missing free of session in perf_sched__timehist() perf sched timehist: Fixed timestamp error when unable to confirm event sched_in time perf time-utils: Fix 32-bit nsec parsing clk: rockchip: Set parent rate for DCLK_VOP clock on RK3228 drivers: media: dvb-frontends/rtl2832: fix an out-of-bounds write error drivers: media: dvb-frontends/rtl2830: fix an out-of-bounds write error PCI: xilinx-nwl: Fix register misspelling RDMA/iwcm: Fix WARNING:at_kernel/workqueue.c:#check_flush_dependency pinctrl: single: fix missing error code in pcs_probe() clk: ti: dra7-atl: Fix leak of of_nodes pinctrl: mvebu: Fix devinit_dove_pinctrl_probe function RDMA/cxgb4: Added NULL check for lookup_atid ntb: intel: Fix the NULL vs IS_ERR() bug for debugfs_create_dir() nfsd: call cache_put if xdr_reserve_space returns NULL f2fs: enhance to update i_mode and acl atomically in f2fs_setattr() f2fs: fix typo f2fs: fix to update i_ctime in __f2fs_setxattr() f2fs: remove unneeded check condition in __f2fs_setxattr() f2fs: reduce expensive checkpoint trigger frequency coresight: tmc: sg: Do not leak sg_table netfilter: nf_reject_ipv6: fix nf_reject_ip6_tcphdr_put() net: seeq: Fix use after free vulnerability in ether3 Driver Due to Race Condition tcp: introduce tcp_skb_timestamp_us() helper tcp: check skb is non-NULL in tcp_rto_delta_us() net: qrtr: Update packets cloning when broadcasting netfilter: ctnetlink: compile ctnetlink_label_size with CONFIG_NF_CONNTRACK_EVENTS crypto: aead,cipher - zeroize key buffer after use Remove *.orig pattern from .gitignore soc: versatile: integrator: fix OF node leak in probe() error path USB: appledisplay: close race between probe and completion handler USB: misc: cypress_cy7c63: check for short transfer firmware_loader: Block path traversal tty: rp2: Fix reset with non forgiving PCIe host bridges drbd: Fix atomicity violation in drbd_uuid_set_bm() drbd: Add NULL check for net_conf to prevent dereference in state validation ACPI: sysfs: validate return type of _STR method f2fs: prevent possible int overflow in dir_block_index() f2fs: avoid potential int overflow in sanity_check_area_boundary() vfs: fix race between evice_inodes() and find_inode()&iput() fs: Fix file_set_fowner LSM hook inconsistencies nfs: fix memory leak in error path of nfs4_do_reclaim PCI: xilinx-nwl: Use irq_data_get_irq_chip_data() PCI: xilinx-nwl: Fix off-by-one in INTx IRQ handler soc: versatile: realview: fix memory leak during device remove soc: versatile: realview: fix soc_dev leak during device remove usb: yurex: Replace snprintf() with the safer scnprintf() variant USB: misc: yurex: fix race between read and write pps: remove usage of the deprecated ida_simple_xx() API pps: add an error check in parport_attach i2c: aspeed: Update the stop sw state when the bus recovery occurs i2c: isch: Add missed 'else' usb: yurex: Fix inconsistent locking bug in yurex_read() mailbox: rockchip: fix a typo in module autoloading mailbox: bcm2835: Fix timeout during suspend mode ceph: remove the incorrect Fw reference check when dirtying pages netfilter: uapi: NFTA_FLOWTABLE_HOOK is NLA_NESTED netfilter: nf_tables: prevent nf_skb_duplicated corruption r8152: Factor out OOB link list waits net: ethernet: lantiq_etop: fix memory disclosure net: avoid potential underflow in qdisc_pkt_len_init() with UFO net: add more sanity checks to qdisc_pkt_len_init() ipv4: ip_gre: Fix drops of small packets in ipgre_xmit sctp: set sk_state back to CLOSED if autobind fails in sctp_listen_start ALSA: hda/generic: Unconditionally prefer preferred_dacs pairs ALSA: hda/conexant: Fix conflicting quirk for System76 Pangolin f2fs: Require FMODE_WRITE for atomic write ioctls wifi: ath9k: fix possible integer overflow in ath9k_get_et_stats() wifi: ath9k_htc: Use __skb_set_length() for resetting urb before resubmit net: hisilicon: hip04: fix OF node leak in probe() net: hisilicon: hns_dsaf_mac: fix OF node leak in hns_mac_get_info() net: hisilicon: hns_mdio: fix OF node leak in probe() ACPICA: Fix memory leak if acpi_ps_get_next_namepath() fails ACPICA: Fix memory leak if acpi_ps_get_next_field() fails ACPI: EC: Do not release locks during operation region accesses ACPICA: check null return of ACPI_ALLOCATE_ZEROED() in acpi_db_convert_to_package() tipc: guard against string buffer overrun net: mvpp2: Increase size of queue_name buffer ipv4: Check !in_dev earlier for ioctl(SIOCSIFADDR). ipv4: Mask upper DSCP bits and ECN bits in NETLINK_FIB_LOOKUP family tcp: avoid reusing FIN_WAIT2 when trying to find port in connect() process ACPICA: iasl: handle empty connection_node wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_cmd_802_11_scan_ext() signal: Replace BUG_ON()s ALSA: asihpi: Fix potential OOB array access ALSA: hdsp: Break infinite MIDI input flush loop fbdev: pxafb: Fix possible use after free in pxafb_task() power: reset: brcmstb: Do not go into infinite loop if reset fails ata: sata_sil: Rename sil_blacklist to sil_quirks jfs: UBSAN: shift-out-of-bounds in dbFindBits jfs: Fix uaf in dbFreeBits jfs: check if leafidx greater than num leaves per dmap tree jfs: Fix uninit-value access of new_ea in ea_buffer drm/amd/display: Check stream before comparing them drm/amd/display: Fix index out of bounds in degamma hardware format translation drm/printer: Allow NULL data in devcoredump printer scsi: aacraid: Rearrange order of struct aac_srb_unit drm/radeon/r100: Handle unknown family in r100_cp_init_microcode() of/irq: Refer to actual buffer size in of_irq_parse_one() ext4: ext4_search_dir should return a proper error ext4: fix i_data_sem unlock order in ext4_ind_migrate() spi: s3c64xx: fix timeout counters in flush_fifo selftests: breakpoints: use remaining time to check if suspend succeed selftests: vDSO: fix vDSO symbols lookup for powerpc64 i2c: xiic: Wait for TX empty to avoid missed TX NAKs spi: bcm63xx: Fix module autoloading perf/core: Fix small negative period being ignored parisc: Fix itlb miss handler for 64-bit programs ALSA: core: add isascii() check to card ID generator ext4: no need to continue when the number of entries is 1 ext4: propagate errors from ext4_find_extent() in ext4_insert_range() ext4: fix incorrect tid assumption in __jbd2_log_wait_for_space() ext4: aovid use-after-free in ext4_ext_insert_extent() ext4: fix double brelse() the buffer of the extents path ext4: fix incorrect tid assumption in ext4_wait_for_tail_page_commit() parisc: Fix 64-bit userspace syscall path of/irq: Support #msi-cells=<0> in of_msi_get_domain jbd2: stop waiting for space when jbd2_cleanup_journal_tail() returns error ocfs2: fix the la space leak when unmounting an ocfs2 volume ocfs2: fix uninit-value in ocfs2_get_block() ocfs2: reserve space for inline xattr before attaching reflink tree ocfs2: cancel dqi_sync_work before freeing oinfo ocfs2: remove unreasonable unlock in ocfs2_read_blocks ocfs2: fix null-ptr-deref when journal load failed. ocfs2: fix possible null-ptr-deref in ocfs2_set_buffer_uptodate riscv: define ILLEGAL_POINTER_VALUE for 64bit aoe: fix the potential use-after-free problem in more places clk: rockchip: fix error for unknown clocks media: uapi/linux/cec.h: cec_msg_set_reply_to: zero flags media: venus: fix use after free bug in venus_remove due to race condition iio: magnetometer: ak8975: Fix reading for ak099xx sensors tomoyo: fallback to realpath if symlink's pathname does not exist Input: adp5589-keys - fix adp5589_gpio_get_value() btrfs: wait for fixup workers before stopping cleaner kthread during umount gpio: davinci: fix lazy disable ext4: avoid ext4_error()'s caused by ENOMEM in the truncate path ext4: fix slab-use-after-free in ext4_split_extent_at() ext4: update orig_path in ext4_find_extent() arm64: Add Cortex-715 CPU part definition arm64: cputype: Add Neoverse-N3 definitions arm64: errata: Expand speculative SSBS workaround once more uprobes: fix kernel info leak via "[uprobes]" vma nfsd: use ktime_get_seconds() for timestamps nfsd: fix delegation_blocked() to block correctly for at least 30 seconds rtc: at91sam9: drop platform_data support rtc: at91sam9: fix OF node leak in probe() error path ACPI: battery: Simplify battery hook locking ACPI: battery: Fix possible crash when unregistering a battery hook ext4: fix inode tree inconsistency caused by ENOMEM net: ethernet: cortina: Drop TSO support tracing: Remove precision vsnprintf() check from print event drm: Move drm_mode_setcrtc() local re-init to failure path drm/crtc: fix uninitialized variable use even harder virtio_console: fix misc probe bugs Input: synaptics-rmi4 - fix UAF of IRQ domain on driver removal bpf: Check percpu map value size first s390/facility: Disable compile time optimization for decompressor code s390/mm: Add cond_resched() to cmm_alloc/free_pages() ext4: nested locking for xattr inode s390/cpum_sf: Remove WARN_ON_ONCE statements ktest.pl: Avoid false positives with grub2 skip regex clk: bcm: bcm53573: fix OF node leak in init i2c: i801: Use a different adapter-name for IDF adapters PCI: Mark Creative Labs EMU20k2 INTx masking as broken media: videobuf2-core: clear memory related fields in __vb2_plane_dmabuf_put() usb: chipidea: udc: enable suspend interrupt after usb reset tools/iio: Add memory allocation failure check for trigger_name driver core: bus: Return -EIO instead of 0 when show/store invalid bus attribute fbdev: sisfb: Fix strbuf array overflow NFS: Remove print_overflow_msg() SUNRPC: Fix integer overflow in decode_rc_list() tcp: fix tcp_enter_recovery() to zero retrans_stamp when it's safe netfilter: br_netfilter: fix panic with metadata_dst skb Bluetooth: RFCOMM: FIX possible deadlock in rfcomm_sk_state_change gpio: aspeed: Add the flush write to ensure the write complete. clk: Add (devm_)clk_get_optional() functions clk: generalize devm_clk_get() a bit clk: Provide new devm_clk helpers for prepared and enabled clocks gpio: aspeed: Use devm_clk api to manage clock source igb: Do not bring the device up after non-fatal error net: ibm: emac: mal: fix wrong goto ppp: fix ppp_async_encode() illegal access net: ipv6: ensure we call ipv6_mc_down() at most once CDC-NCM: avoid overflow in sanity checking HID: plantronics: Workaround for an unexcepted opposite volume key Revert "usb: yurex: Replace snprintf() with the safer scnprintf() variant" usb: xhci: Fix problem with xhci resume from suspend usb: storage: ignore bogus device raised by JieLi BR21 USB sound chip net: Fix an unsafe loop on the list posix-clock: Fix missing timespec64 check in pc_clock_settime() arm64: probes: Remove broken LDR (literal) uprobe support arm64: probes: Fix simulate_ldr*_literal() PCI: Add function 0 DMA alias quirk for Glenfly Arise chip fat: fix uninitialized variable KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin() net: dsa: mv88e6xxx: Fix out-of-bound access s390/sclp_vt220: Convert newlines to CRLF instead of LFCR KVM: s390: Change virtual to physical address access in diag 0x258 handler x86/cpufeatures: Define X86_FEATURE_AMD_IBPB_RET drm/vmwgfx: Handle surface check failure correctly iio: dac: stm32-dac-core: add missing select REGMAP_MMIO in Kconfig iio: adc: ti-ads8688: add missing select IIO_(TRIGGERED_)BUFFER in Kconfig iio: hid-sensors: Fix an error handling path in _hid_sensor_set_report_latency() iio: light: opt3001: add missing full-scale range value Bluetooth: Remove debugfs directory on module init failure Bluetooth: btusb: Fix regression with fake CSR controllers 0a12:0001 xhci: Fix incorrect stream context type macro USB: serial: option: add support for Quectel EG916Q-GL USB: serial: option: add Telit FN920C04 MBIM compositions parport: Proper fix for array out-of-bounds access x86/apic: Always explicitly disarm TSC-deadline timer nilfs2: propagate directory read errors from nilfs_find_entry() clk: Fix pointer casting to prevent oops in devm_clk_release() clk: Fix slab-out-of-bounds error in devm_clk_release() RDMA/bnxt_re: Fix incorrect AVID type in WQE structure RDMA/cxgb4: Fix RDMA_CM_EVENT_UNREACHABLE error for iWARP RDMA/bnxt_re: Return more meaningful error drm/msm/dsi: fix 32-bit signed integer extension in pclk_rate calculation macsec: don't increment counters for an unrelated SA net: ethernet: aeroflex: fix potential memory leak in greth_start_xmit_gbit() net: systemport: fix potential memory leak in bcm_sysport_xmit() usb: typec: altmode should keep reference to parent Bluetooth: bnep: fix wild-memory-access in proto_unregister arm64:uprobe fix the uprobe SWBP_INSN in big-endian arm64: probes: Fix uprobes for big-endian kernels KVM: s390: gaccess: Refactor gpa and length calculation KVM: s390: gaccess: Refactor access address range check KVM: s390: gaccess: Cleanup access to guest pages KVM: s390: gaccess: Check if guest address is in memslot udf: fix uninit-value use in udf_get_fileshortad jfs: Fix sanity check in dbMount net/sun3_82586: fix potential memory leak in sun3_82586_send_packet() be2net: fix potential memory leak in be_xmit() net: usb: usbnet: fix name regression posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime() ALSA: hda/realtek: Update default depop procedure drm/amd: Guard against bad data for ATIF ACPI method ACPI: button: Add DMI quirk for Samsung Galaxy Book2 to fix initial lid detection issue nilfs2: fix kernel bug due to missing clearing of buffer delay flag hv_netvsc: Fix VF namespace also in synthetic NIC NETDEV_REGISTER event selinux: improve error checking in sel_write_load() arm64/uprobes: change the uprobe_opcode_t typedef to fix the sparse warning xfrm: validate new SA's prefixlen using SA family when sel.family is unset usb: dwc3: remove generic PHY calibrate() calls usb: dwc3: Add splitdisable quirk for Hisilicon Kirin Soc usb: dwc3: core: Stop processing of pending events if controller is halted cgroup: Fix potential overflow issue when checking max_depth wifi: mac80211: skip non-uploaded keys in ieee80211_iter_keys gtp: simplify error handling code in 'gtp_encap_enable()' gtp: allow -1 to be specified as file description from userspace net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT bpf: Fix out-of-bounds write in trie_get_next_key() net: support ip generic csum processing in skb_csum_hwoffload_help net: skip offload for NETIF_F_IPV6_CSUM if ipv6 header contains extension netfilter: nft_payload: sanitize offset and length before calling skb_checksum() firmware: arm_sdei: Fix the input parameter of cpuhp_remove_state() net: amd: mvme147: Fix probe banner message misc: sgi-gru: Don't disable preemption in GRU driver usbip: tools: Fix detach_port() invalid port error path usb: phy: Fix API devm_usb_put_phy() can not release the phy xhci: Fix Link TRB DMA in command ring stopped completion event Revert "driver core: Fix uevent_show() vs driver detach race" wifi: mac80211: do not pass a stopped vif to the driver in .get_txpower wifi: ath10k: Fix memory leak in management tx wifi: iwlegacy: Clear stale interrupts before resuming device nilfs2: fix potential deadlock with newly created symlinks ocfs2: pass u64 to ocfs2_truncate_inline maybe overflow nilfs2: fix kernel bug due to missing clearing of checked flag mm: shmem: fix data-race in shmem_getattr() vt: prevent kernel-infoleak in con_font_get() Linux 4.19.323 Change-Id: I2348f834187153067ab46b3b48b8fe7da9cee1f1 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
|
Byeonguk Jeong
|
e8494ac079 |
bpf: Fix out-of-bounds write in trie_get_next_key()
[ Upstream commit 13400ac8fb80c57c2bfb12ebd35ee121ce9b4d21 ]
trie_get_next_key() allocates a node stack with size trie->max_prefixlen,
while it writes (trie->max_prefixlen + 1) nodes to the stack when it has
full paths from the root to leaves. For example, consider a trie with
max_prefixlen is 8, and the nodes with key 0x00/0, 0x00/1, 0x00/2, ...
0x00/8 inserted. Subsequent calls to trie_get_next_key with _key with
.prefixlen = 8 make 9 nodes be written on the node stack with size 8.
Fixes:
|
||
|
Xiu Jianfeng
|
339df130db |
cgroup: Fix potential overflow issue when checking max_depth
[ Upstream commit 3cc4e13bb1617f6a13e5e6882465984148743cf4 ]
cgroup.max.depth is the maximum allowed descent depth below the current
cgroup. If the actual descent depth is equal or larger, an attempt to
create a new child cgroup will fail. However due to the cgroup->max_depth
is of int type and having the default value INT_MAX, the condition
'level > cgroup->max_depth' will never be satisfied, and it will cause
an overflow of the level after it reaches to INT_MAX.
Fix it by starting the level from 0 and using '>=' instead.
It's worth mentioning that this issue is unlikely to occur in reality,
as it's impossible to have a depth of INT_MAX hierarchy, but should be
be avoided logically.
Fixes:
|
||
|
Jinjie Ruan
|
d005400262 |
posix-clock: posix-clock: Fix unbalanced locking in pc_clock_settime()
[ Upstream commit 6e62807c7fbb3c758d233018caf94dfea9c65dbd ]
If get_clock_desc() succeeds, it calls fget() for the clockid's fd,
and get the clk->rwsem read lock, so the error path should release
the lock to make the lock balance and fput the clockid's fd to make
the refcount balance and release the fd related resource.
However the below commit left the error path locked behind resulting in
unbalanced locking. Check timespec64_valid_strict() before
get_clock_desc() to fix it, because the "ts" is not changed
after that.
Fixes: d8794ac20a29 ("posix-clock: Fix missing timespec64 check in pc_clock_settime()")
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Acked-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
[pabeni@redhat.com: fixed commit message typo]
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
||
|
Jinjie Ruan
|
29f085345c |
posix-clock: Fix missing timespec64 check in pc_clock_settime()
commit d8794ac20a299b647ba9958f6d657051fc51a540 upstream.
As Andrew pointed out, it will make sense that the PTP core
checked timespec64 struct's tv_sec and tv_nsec range before calling
ptp->info->settime64().
As the man manual of clock_settime() said, if tp.tv_sec is negative or
tp.tv_nsec is outside the range [0..999,999,999], it should return EINVAL,
which include dynamic clocks which handles PTP clock, and the condition is
consistent with timespec64_valid(). As Thomas suggested, timespec64_valid()
only check the timespec is valid, but not ensure that the time is
in a valid range, so check it ahead using timespec64_valid_strict()
in pc_clock_settime() and return -EINVAL if not valid.
There are some drivers that use tp->tv_sec and tp->tv_nsec directly to
write registers without validity checks and assume that the higher layer
has checked it, which is dangerous and will benefit from this, such as
hclge_ptp_settime(), igb_ptp_settime_i210(), _rcar_gen4_ptp_settime(),
and some drivers can remove the checks of itself.
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Tao Chen
|
b5ac877855 |
bpf: Check percpu map value size first
[ Upstream commit 1d244784be6b01162b732a5a7d637dfc024c3203 ] Percpu map is often used, but the map value size limit often ignored, like issue: https://github.com/iovisor/bcc/issues/2519. Actually, percpu map value size is bound by PCPU_MIN_UNIT_SIZE, so we can check the value size whether it exceeds PCPU_MIN_UNIT_SIZE first, like percpu map of local_storage. Maybe the error message seems clearer compared with "cannot allocate memory". Signed-off-by: Jinke Han <jinkehan@didiglobal.com> Signed-off-by: Tao Chen <chen.dylane@gmail.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240910144111.1464912-2-chen.dylane@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org> |
||
|
Steven Rostedt (Google)
|
f3de4b5d1a |
tracing: Remove precision vsnprintf() check from print event
[ Upstream commit 5efd3e2aef91d2d812290dcb25b2058e6f3f532c ]
This reverts 60be76eeabb3d ("tracing: Add size check when printing
trace_marker output"). The only reason the precision check was added
was because of a bug that miscalculated the write size of the string into
the ring buffer and it truncated it removing the terminating nul byte. On
reading the trace it crashed the kernel. But this was due to the bug in
the code that happened during development and should never happen in
practice. If anything, the precision can hide bugs where the string in the
ring buffer isn't nul terminated and it will not be checked.
Link: https://lore.kernel.org/all/C7E7AF1A-D30F-4D18-B8E5-AF1EF58004F5@linux.ibm.com/
Link: https://lore.kernel.org/linux-trace-kernel/20240227125706.04279ac2@gandalf.local.home
Link: https://lore.kernel.org/all/20240302111244.3a1674be@gandalf.local.home/
Link: https://lore.kernel.org/linux-trace-kernel/20240304174341.2a561d9f@gandalf.local.home
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 60be76eeabb3d ("tracing: Add size check when printing trace_marker output")
Reported-by: Sachin Sant <sachinp@linux.ibm.com>
Tested-by: Sachin Sant <sachinp@linux.ibm.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
||
|
Oleg Nesterov
|
f31f92107e |
uprobes: fix kernel info leak via "[uprobes]" vma
commit 34820304cc2cd1804ee1f8f3504ec77813d29c8e upstream.
xol_add_vma() maps the uninitialized page allocated by __create_xol_area()
into userspace. On some architectures (x86) this memory is readable even
without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ,
although this doesn't really matter, debugger can read this memory anyway.
Link: https://lore.kernel.org/all/20240929162047.GA12611@redhat.com/
Reported-by: Will Deacon <will@kernel.org>
Fixes:
|
||
|
Luo Gengkun
|
7fddba7b1b |
perf/core: Fix small negative period being ignored
commit 62c0b1061593d7012292f781f11145b2d46f43ab upstream.
In perf_adjust_period, we will first calculate period, and then use
this period to calculate delta. However, when delta is less than 0,
there will be a deviation compared to when delta is greater than or
equal to 0. For example, when delta is in the range of [-14,-1], the
range of delta = delta + 7 is between [-7,6], so the final value of
delta/8 is 0. Therefore, the impact of -1 and -2 will be ignored.
This is unacceptable when the target period is very short, because
we will lose a lot of samples.
Here are some tests and analyzes:
before:
# perf record -e cs -F 1000 ./a.out
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.022 MB perf.data (518 samples) ]
# perf script
...
a.out 396 257.956048: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.957891: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.959730: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.961545: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.963355: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.965163: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.966973: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.968785: 23 cs: ffffffff81f4eeec schedul>
a.out 396 257.970593: 23 cs: ffffffff81f4eeec schedul>
...
after:
# perf record -e cs -F 1000 ./a.out
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.058 MB perf.data (1466 samples) ]
# perf script
...
a.out 395 59.338813: 11 cs: ffffffff81f4eeec schedul>
a.out 395 59.339707: 12 cs: ffffffff81f4eeec schedul>
a.out 395 59.340682: 13 cs: ffffffff81f4eeec schedul>
a.out 395 59.341751: 13 cs: ffffffff81f4eeec schedul>
a.out 395 59.342799: 12 cs: ffffffff81f4eeec schedul>
a.out 395 59.343765: 11 cs: ffffffff81f4eeec schedul>
a.out 395 59.344651: 11 cs: ffffffff81f4eeec schedul>
a.out 395 59.345539: 12 cs: ffffffff81f4eeec schedul>
a.out 395 59.346502: 13 cs: ffffffff81f4eeec schedul>
...
test.c
int main() {
for (int i = 0; i < 20000; i++)
usleep(10);
return 0;
}
# time ./a.out
real 0m1.583s
user 0m0.040s
sys 0m0.298s
The above results were tested on x86-64 qemu with KVM enabled using
test.c as test program. Ideally, we should have around 1500 samples,
but the previous algorithm had only about 500, whereas the modified
algorithm now has about 1400. Further more, the new version shows 1
sample per 0.001s, while the previous one is 1 sample per 0.002s.This
indicates that the new algorithm is more sensitive to small negative
values compared to old algorithm.
Fixes:
|
||
|
Thomas Gleixner
|
0f9c27fbb8 |
signal: Replace BUG_ON()s
[ Upstream commit 7f8af7bac5380f2d95a63a6f19964e22437166e1 ] These really can be handled gracefully without killing the machine. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Frederic Weisbecker <frederic@kernel.org> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Sasha Levin <sashal@kernel.org> |
||
|
Chen Yu
|
6430d6a00b |
kthread: fix task state in kthread worker if being frozen
[ Upstream commit e16c7b07784f3fb03025939c4590b9a7c64970a7 ]
When analyzing a kernel waring message, Peter pointed out that there is a
race condition when the kworker is being frozen and falls into
try_to_freeze() with TASK_INTERRUPTIBLE, which could trigger a
might_sleep() warning in try_to_freeze(). Although the root cause is not
related to freeze()[1], it is still worthy to fix this issue ahead.
One possible race scenario:
CPU 0 CPU 1
----- -----
// kthread_worker_fn
set_current_state(TASK_INTERRUPTIBLE);
suspend_freeze_processes()
freeze_processes
static_branch_inc(&freezer_active);
freeze_kernel_threads
pm_nosig_freezing = true;
if (work) { //false
__set_current_state(TASK_RUNNING);
} else if (!freezing(current)) //false, been frozen
freezing():
if (static_branch_unlikely(&freezer_active))
if (pm_nosig_freezing)
return true;
schedule()
}
// state is still TASK_INTERRUPTIBLE
try_to_freeze()
might_sleep() <--- warning
Fix this by explicitly set the TASK_RUNNING before entering
try_to_freeze().
Link: https://lore.kernel.org/lkml/Zs2ZoAcUsZMX2B%2FI@chenyu5-mobl2/ [1]
Link: https://lkml.kernel.org/r/20240827112308.181081-1-yu.c.chen@intel.com
Fixes:
|
||
|
Rob Clark
|
65c1957181 |
kthread: add kthread_work tracepoints
[ Upstream commit f630c7c6f10546ebff15c3a856e7949feb7a2372 ] While migrating some code from wq to kthread_worker, I found that I missed the execute_start/end tracepoints. So add similar tracepoints for kthread_work. And for completeness, queue_work tracepoint (although this one differs slightly from the matching workqueue tracepoint). Link: https://lkml.kernel.org/r/20201010180323.126634-1-robdclark@gmail.com Signed-off-by: Rob Clark <robdclark@chromium.org> Cc: Rob Clark <robdclark@chromium.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org> Cc: Phil Auld <pauld@redhat.com> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: Thara Gopinath <thara.gopinath@linaro.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Vincent Donnefort <vincent.donnefort@arm.com> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Jens Axboe <axboe@kernel.dk> Cc: Marcelo Tosatti <mtosatti@redhat.com> Cc: Frederic Weisbecker <frederic@kernel.org> Cc: Ilias Stamatis <stamatis.iliass@gmail.com> Cc: Liang Chen <cl@rock-chips.com> Cc: Ben Dooks <ben.dooks@codethink.co.uk> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: "J. Bruce Fields" <bfields@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Stable-dep-of: e16c7b07784f ("kthread: fix task state in kthread worker if being frozen") Signed-off-by: Sasha Levin <sashal@kernel.org> |
||
|
Michael Bestas
|
f8239b8b4e |
Merge tag 'ASB-2024-10-05_4.19-stable' of https://android.googlesource.com/kernel/common into android13-4.19-kona
https://source.android.com/docs/security/bulletin/2024-10-01 * tag 'ASB-2024-10-05_4.19-stable' of https://android.googlesource.com/kernel/common: (99 commits) Linux 4.19.322 Revert "parisc: Use irq_enter_rcu() to fix warning at kernel/context_tracking.c:367" netns: restore ops before calling ops_exit_list cx82310_eth: fix error return code in cx82310_bind() net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket rtmutex: Drop rt_mutex::wait_lock before scheduling drm/i915/fence: Mark debug_fence_free() with __maybe_unused drm/i915/fence: Mark debug_fence_init_onstack() with __maybe_unused ACPI: processor: Fix memory leaks in error paths of processor_add() ACPI: processor: Return an error if acpi_processor_get_info() fails in processor_add() ila: call nf_unregister_net_hooks() sooner netns: add pre_exit method to struct pernet_operations nilfs2: protect references to superblock parameters exposed in sysfs nilfs2: replace snprintf in show functions with sysfs_emit tracing: Avoid possible softlockup in tracing_iter_reset() ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance() uprobes: Use kzalloc to allocate xol area clocksource/drivers/imx-tpm: Fix next event not taking effect sometime clocksource/drivers/imx-tpm: Fix return -ETIME when delta exceeds INT_MAX VMCI: Fix use-after-free when removing resource in vmci_resource_remove() ... Conflicts: drivers/clk/qcom/clk-alpha-pll.c Change-Id: I79078f7d518fa7e6a2b373df48acbd6f9f9ba30b |
||
|
Michael Bestas
|
10ae1daee6 |
Merge tag 'ASB-2024-09-05_4.19-stable' of https://android.googlesource.com/kernel/common into android13-4.19-kona
https://source.android.com/docs/security/bulletin/2024-09-01 CVE-2024-36972 * tag 'ASB-2024-09-05_4.19-stable' of https://android.googlesource.com/kernel/common: (331 commits) Linux 4.19.321 drm/fb-helper: set x/yres_virtual in drm_fb_helper_check_var ipc: remove memcg accounting for sops objects in do_semtimedop() scsi: aacraid: Fix double-free on probe failure usb: core: sysfs: Unmerge @usb3_hardware_lpm_attr_group in remove_power_attributes() usb: dwc3: st: fix probed platform device ref count on probe error path usb: dwc3: core: Prevent USB core invalid event buffer address access usb: dwc3: omap: add missing depopulate in probe error path USB: serial: option: add MeiG Smart SRM825L cdc-acm: Add DISABLE_ECHO quirk for GE HealthCare UI Controller net: busy-poll: use ktime_get_ns() instead of local_clock() gtp: fix a potential NULL pointer dereference soundwire: stream: fix programming slave ports for non-continous port maps net: prevent mss overflow in skb_segment() ida: Fix crash in ida_free when the bitmap is empty net:rds: Fix possible deadlock in rds_message_put fbmem: Check virtual screen sizes in fb_set_var() fbcon: Prevent that screen size is smaller than font size memcg: enable accounting of ipc resources cgroup/cpuset: Prevent UAF in proc_cpuset_show() ... Conflicts: Documentation/arm64/silicon-errata.txt arch/arm64/include/asm/cpucaps.h arch/arm64/kernel/cpu_errata.c drivers/mmc/core/mmc_test.c Change-Id: Ibfaed509d545f9895e5d515f4e237d9c97c2086d |
||
|
Greg Kroah-Hartman
|
1b3964c5e0 |
Merge 4.19.322 into android-4.19-stable
Changes in 4.19.322 net: usb: qmi_wwan: add MeiG Smart SRM825L usb: dwc3: st: Add of_node_put() before return in probe function usb: dwc3: st: add missing depopulate in probe error path drm/amdgpu: Fix uninitialized variable warning in amdgpu_afmt_acr drm/amdgpu: fix overflowed array index read warning drm/amdgpu: fix ucode out-of-bounds read warning drm/amdgpu: fix mc_data out-of-bounds read warning drm/amdkfd: Reconcile the definition and use of oem_id in struct kfd_topology_device apparmor: fix possible NULL pointer dereference usbip: Don't submit special requests twice smack: tcp: ipv4, fix incorrect labeling media: uvcvideo: Enforce alignment of frame and interval block: initialize integrity buffer to zero before writing it to media virtio_net: Fix napi_skb_cache_put warning udf: Limit file size to 4TB ALSA: usb-audio: Sanity checks for each pipe and EP types ALSA: usb-audio: Fix gpf in snd_usb_pipe_sanity_check sch/netem: fix use after free in netem_dequeue ALSA: hda/conexant: Add pincfg quirk to enable top speakers on Sirius devices ata: libata: Fix memory leak for error path in ata_host_alloc() mmc: dw_mmc: Fix IDMAC operation with pages bigger than 4K fuse: use unsigned type for getxattr/listxattr size truncation clk: qcom: clk-alpha-pll: Fix the pll post div mask nilfs2: fix missing cleanup on rollforward recovery error nilfs2: fix state management in error path of log writing function ALSA: hda: Add input value sanity checks to HDMI channel map controls smack: unix sockets: fix accept()ed socket label irqchip/armada-370-xp: Do not allow mapping IRQ 0 and 1 af_unix: Remove put_pid()/put_cred() in copy_peercred(). netfilter: nf_conncount: fix wrong variable type udf: Avoid excessive partition lengths wifi: brcmsmac: advertise MFP_CAPABLE to enable WPA3 media: qcom: camss: Add check for v4l2_fwnode_endpoint_parse pcmcia: Use resource_size function on resource object can: bcm: Remove proc entry when dev is unregistered. igb: Fix not clearing TimeSync interrupts for 82580 platform/x86: dell-smbios: Fix error path in dell_smbios_init() cx82310_eth: re-enable ethernet mode after router reboot drivers/net/usb: Remove all strcpy() uses net: usb: don't write directly to netdev->dev_addr usbnet: modern method to get random MAC rfkill: fix spelling mistake contidion to condition net: bridge: add support for sticky fdb entries bridge: switchdev: Allow clearing FDB entry offload indication net: bridge: fdb: convert is_local to bitops net: bridge: fdb: convert is_static to bitops net: bridge: fdb: convert is_sticky to bitops net: bridge: fdb: convert added_by_user to bitops net: bridge: fdb: convert added_by_external_learn to use bitops net: bridge: br_fdb_external_learn_add(): always set EXT_LEARN net: dsa: vsc73xx: fix possible subblocks range of CAPT block iommu/vt-d: Handle volatile descriptor status read cgroup: Protect css->cgroup write under css_set_lock um: line: always fill *error_out in setup_one_line() devres: Initialize an uninitialized struct member pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv hwmon: (adc128d818) Fix underflows seen when writing limit attributes hwmon: (lm95234) Fix underflows seen when writing limit attributes hwmon: (nct6775-core) Fix underflows seen when writing limit attributes hwmon: (w83627ehf) Fix underflows seen when writing limit attributes wifi: mwifiex: Do not return unused priv in mwifiex_get_priv_by_id() smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu() btrfs: replace BUG_ON with ASSERT in walk_down_proc() btrfs: clean up our handling of refs == 0 in snapshot delete PCI: Add missing bridge lock to pci_bus_lock() btrfs: initialize location to fix -Wmaybe-uninitialized in btrfs_lookup_dentry() HID: cougar: fix slab-out-of-bounds Read in cougar_report_fixup Input: uinput - reject requests with unreasonable number of slots usbnet: ipheth: race between ipheth_close and error handling Squashfs: sanity check symbolic link size of/irq: Prevent device address out-of-bounds read in interrupt map walk ata: pata_macio: Use WARN instead of BUG iio: buffer-dmaengine: fix releasing dma channel on error iio: fix scale application in iio_convert_raw_to_processed_unlocked nvmem: Fix return type of devm_nvmem_device_get() in kerneldoc uio_hv_generic: Fix kernel NULL pointer dereference in hv_uio_rescind Drivers: hv: vmbus: Fix rescind handling in uio_hv_generic VMCI: Fix use-after-free when removing resource in vmci_resource_remove() clocksource/drivers/imx-tpm: Fix return -ETIME when delta exceeds INT_MAX clocksource/drivers/imx-tpm: Fix next event not taking effect sometime uprobes: Use kzalloc to allocate xol area ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance() tracing: Avoid possible softlockup in tracing_iter_reset() nilfs2: replace snprintf in show functions with sysfs_emit nilfs2: protect references to superblock parameters exposed in sysfs netns: add pre_exit method to struct pernet_operations ila: call nf_unregister_net_hooks() sooner ACPI: processor: Return an error if acpi_processor_get_info() fails in processor_add() ACPI: processor: Fix memory leaks in error paths of processor_add() drm/i915/fence: Mark debug_fence_init_onstack() with __maybe_unused drm/i915/fence: Mark debug_fence_free() with __maybe_unused rtmutex: Drop rt_mutex::wait_lock before scheduling net, sunrpc: Remap EPERM in case of connection failure in xs_tcp_setup_socket cx82310_eth: fix error return code in cx82310_bind() netns: restore ops before calling ops_exit_list Revert "parisc: Use irq_enter_rcu() to fix warning at kernel/context_tracking.c:367" Linux 4.19.322 Change-Id: I91163696e8593c077f8fe3d59348a68c76a2624b Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
|
Roland Xu
|
432efdbe7d |
rtmutex: Drop rt_mutex::wait_lock before scheduling
commit d33d26036a0274b472299d7dcdaa5fb34329f91b upstream.
rt_mutex_handle_deadlock() is called with rt_mutex::wait_lock held. In the
good case it returns with the lock held and in the deadlock case it emits a
warning and goes into an endless scheduling loop with the lock held, which
triggers the 'scheduling in atomic' warning.
Unlock rt_mutex::wait_lock in the dead lock case before issuing the warning
and dropping into the schedule for ever loop.
[ tglx: Moved unlock before the WARN(), removed the pointless comment,
massaged changelog, added Fixes tag ]
Fixes:
|
||
|
Zheng Yejian
|
84bd537aae |
tracing: Avoid possible softlockup in tracing_iter_reset()
[ Upstream commit 49aa8a1f4d6800721c7971ed383078257f12e8f9 ]
In __tracing_open(), when max latency tracers took place on the cpu,
the time start of its buffer would be updated, then event entries with
timestamps being earlier than start of the buffer would be skipped
(see tracing_iter_reset()).
Softlockup will occur if the kernel is non-preemptible and too many
entries were skipped in the loop that reset every cpu buffer, so add
cond_resched() to avoid it.
Cc: stable@vger.kernel.org
Fixes:
|
||
|
Steven Rostedt (VMware)
|
ac8ffa21dd |
ring-buffer: Rename ring_buffer_read() to read_buffer_iter_advance()
[ Upstream commit bc1a72afdc4a91844928831cac85731566e03bc6 ] When the ring buffer was first created, the iterator followed the normal producer/consumer operations where it had both a peek() operation, that just returned the event at the current location, and a read(), that would return the event at the current location and also increment the iterator such that the next peek() or read() will return the next event. The only use of the ring_buffer_read() is currently to move the iterator to the next location and nothing now actually reads the event it returns. Rename this function to its actual use case to ring_buffer_iter_advance(), which also adds the "iter" part to the name, which is more meaningful. As the timestamp returned by ring_buffer_read() was never used, there's no reason that this new version should bother having returning it. It will also become a void function. Link: http://lkml.kernel.org/r/20200317213416.018928618@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Stable-dep-of: 49aa8a1f4d68 ("tracing: Avoid possible softlockup in tracing_iter_reset()") Signed-off-by: Sasha Levin <sashal@kernel.org> |
||
|
Sven Schnelle
|
32bb3588cc |
uprobes: Use kzalloc to allocate xol area
commit e240b0fde52f33670d1336697c22d90a4fe33c84 upstream.
To prevent unitialized members, use kzalloc to allocate
the xol area.
Fixes:
|
||
|
Zqiang
|
2d6a7a1ee3 |
smp: Add missing destroy_work_on_stack() call in smp_call_on_cpu()
[ Upstream commit 77aeb1b685f9db73d276bad4bb30d48505a6fd23 ] For CONFIG_DEBUG_OBJECTS_WORK=y kernels sscs.work defined by INIT_WORK_ONSTACK() is initialized by debug_object_init_on_stack() for the debug check in __init_work() to work correctly. But this lacks the counterpart to remove the tracked object from debug objects again, which will cause a debug object warning once the stack is freed. Add the missing destroy_work_on_stack() invocation to cure that. [ tglx: Massaged changelog ] Signed-off-by: Zqiang <qiang.zhang1211@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Paul E. McKenney <paulmck@kernel.org> Link: https://lore.kernel.org/r/20240704065213.13559-1-qiang.zhang1211@gmail.com Signed-off-by: Sasha Levin <sashal@kernel.org> |
||
|
Waiman Long
|
6760357063 |
cgroup: Protect css->cgroup write under css_set_lock
[ Upstream commit 57b56d16800e8961278ecff0dc755d46c4575092 ] The writing of css->cgroup associated with the cgroup root in rebind_subsystems() is currently protected only by cgroup_mutex. However, the reading of css->cgroup in both proc_cpuset_show() and proc_cgroup_show() is protected just by css_set_lock. That makes the readers susceptible to racing problems like data tearing or caching. It is also a problem that can be reported by KCSAN. This can be fixed by using READ_ONCE() and WRITE_ONCE() to access css->cgroup. Alternatively, the writing of css->cgroup can be moved under css_set_lock as well which is done by this patch. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> |
||
|
Greg Kroah-Hartman
|
d757552385 |
Merge 4.19.321 into android-4.19-stable
Changes in 4.19.321 fuse: Initialize beyond-EOF page contents before setting uptodate ALSA: usb-audio: Support Yamaha P-125 quirk entry xhci: Fix Panther point NULL pointer deref at full-speed re-enumeration arm64: ACPI: NUMA: initialize all values of acpi_early_node_map to NUMA_NO_NODE dm resume: don't return EINVAL when signalled dm persistent data: fix memory allocation failure bitmap: introduce generic optimized bitmap_size() fix bitmap corruption on close_range() with CLOSE_RANGE_UNSHARE selinux: fix potential counting error in avc_add_xperms_decision() drm/amdgpu: Actually check flags for all context ops. memcg_write_event_control(): fix a user-triggerable oops s390/cio: rename bitmap_size() -> idset_bitmap_size() overflow.h: Add flex_array_size() helper overflow: Implement size_t saturating arithmetic helpers btrfs: rename bitmap_set_bits() -> btrfs_bitmap_set_bits() net/mlx5e: Correctly report errors for ethtool rx flows atm: idt77252: prevent use after free in dequeue_rx() net: dsa: vsc73xx: pass value in phy_write operation ssb: Fix division by zero issue in ssb_calc_clock_rate wifi: cw1200: Avoid processing an invalid TIM IE i2c: riic: avoid potential division by zero staging: ks7010: disable bh on tx_dev_lock binfmt_misc: cleanup on filesystem umount scsi: spi: Fix sshdr use gfs2: setattr_chown: Add missing initialization wifi: iwlwifi: abort scan when rfkill on but device enabled powerpc/xics: Check return value of kasprintf in icp_native_map_one_cpu ext4: do not trim the group with corrupted block bitmap quota: Remove BUG_ON from dqget() media: pci: cx23885: check cx23885_vdev_init() return fs: binfmt_elf_efpic: don't use missing interpreter's properties scsi: lpfc: Initialize status local variable in lpfc_sli4_repost_sgl_list() net/sun3_82586: Avoid reading past buffer in debug output md: clean up invalid BUG_ON in md_ioctl parisc: Use irq_enter_rcu() to fix warning at kernel/context_tracking.c:367 powerpc/boot: Handle allocation failure in simple_realloc() powerpc/boot: Only free if realloc() succeeds btrfs: change BUG_ON to assertion when checking for delayed_node root btrfs: handle invalid root reference found in may_destroy_subvol() btrfs: send: handle unexpected data in header buffer in begin_cmd() btrfs: delete pointless BUG_ON check on quota root in btrfs_qgroup_account_extent() f2fs: fix to do sanity check in update_sit_entry usb: gadget: fsl: Increase size of name buffer for endpoints Bluetooth: bnep: Fix out-of-bound access NFS: avoid infinite loop in pnfs_update_layout. openrisc: Call setup_memory() earlier in the init sequence s390/iucv: fix receive buffer virtual vs physical address confusion usb: dwc3: core: Skip setting event buffers for host only controllers irqchip/gic-v3-its: Remove BUG_ON in its_vpe_irq_domain_alloc ext4: set the type of max_zeroout to unsigned int to avoid overflow nvmet-rdma: fix possible bad dereference when freeing rsps hrtimer: Prevent queuing of hrtimer without a function callback gtp: pull network headers in gtp_dev_xmit() block: use "unsigned long" for blk_validate_block_size(). Bluetooth: Make use of __check_timeout on hci_sched_le Bluetooth: hci_core: Fix not handling link timeouts propertly Bluetooth: hci_core: Fix LE quote calculation kcm: Serialise kcm_sendmsg() for the same socket. netfilter: nft_counter: Synchronize nft_counter_reset() against reader. ipv6: prevent UAF in ip6_send_skb() net: xilinx: axienet: Always disable promiscuous mode drm/msm: use drm_debug_enabled() to check for debug categories drm/msm/dpu: don't play tricks with debug macros mmc: mmc_test: Fix NULL dereference on allocation failure Bluetooth: MGMT: Add error handling to pair_device() HID: wacom: Defer calculation of resolution until resolution_code is known cxgb4: add forgotten u64 ivlan cast before shift mmc: dw_mmc: allow biu and ciu clocks to defer ALSA: timer: Relax start tick time check for slave timer elements Bluetooth: hci_ldisc: check HCI_UART_PROTO_READY flag in HCIUARTGETPROTO Input: MT - limit max slots tools: move alignment-related macros to new <linux/align.h> drm/amdgpu: Using uninitialized value *size when calling amdgpu_vce_cs_reloc pinctrl: single: fix potential NULL dereference in pcs_get_function() wifi: mwifiex: duplicate static structs used in driver instances dm suspend: return -ERESTARTSYS instead of -EINTR scsi: mpt3sas: Avoid IOMMU page faults on REPORT ZONES filelock: Correct the filelock owner in fcntl_setlk/fcntl_setlk64 media: uvcvideo: Fix integer overflow calculating timestamp ata: libata-core: Fix null pointer dereference on error cgroup/cpuset: Prevent UAF in proc_cpuset_show() memcg: enable accounting of ipc resources fbcon: Prevent that screen size is smaller than font size fbmem: Check virtual screen sizes in fb_set_var() net:rds: Fix possible deadlock in rds_message_put ida: Fix crash in ida_free when the bitmap is empty net: prevent mss overflow in skb_segment() soundwire: stream: fix programming slave ports for non-continous port maps gtp: fix a potential NULL pointer dereference net: busy-poll: use ktime_get_ns() instead of local_clock() cdc-acm: Add DISABLE_ECHO quirk for GE HealthCare UI Controller USB: serial: option: add MeiG Smart SRM825L usb: dwc3: omap: add missing depopulate in probe error path usb: dwc3: core: Prevent USB core invalid event buffer address access usb: dwc3: st: fix probed platform device ref count on probe error path usb: core: sysfs: Unmerge @usb3_hardware_lpm_attr_group in remove_power_attributes() scsi: aacraid: Fix double-free on probe failure ipc: remove memcg accounting for sops objects in do_semtimedop() drm/fb-helper: set x/yres_virtual in drm_fb_helper_check_var Linux 4.19.321 Change-Id: I5ee663c7c3343a99e3c73dd8f663ca5c4e298478 Signed-off-by: Greg Kroah-Hartman <gregkh@google.com> |
||
|
Chen Ridong
|
27d6dbdc64 |
cgroup/cpuset: Prevent UAF in proc_cpuset_show()
commit 1be59c97c83ccd67a519d8a49486b3a8a73ca28a upstream.
An UAF can happen when /proc/cpuset is read as reported in [1].
This can be reproduced by the following methods:
1.add an mdelay(1000) before acquiring the cgroup_lock In the
cgroup_path_ns function.
2.$cat /proc/<pid>/cpuset repeatly.
3.$mount -t cgroup -o cpuset cpuset /sys/fs/cgroup/cpuset/
$umount /sys/fs/cgroup/cpuset/ repeatly.
The race that cause this bug can be shown as below:
(umount) | (cat /proc/<pid>/cpuset)
css_release | proc_cpuset_show
css_release_work_fn | css = task_get_css(tsk, cpuset_cgrp_id);
css_free_rwork_fn | cgroup_path_ns(css->cgroup, ...);
cgroup_destroy_root | mutex_lock(&cgroup_mutex);
rebind_subsystems |
cgroup_free_root |
| // cgrp was freed, UAF
| cgroup_path_ns_locked(cgrp,..);
When the cpuset is initialized, the root node top_cpuset.css.cgrp
will point to &cgrp_dfl_root.cgrp. In cgroup v1, the mount operation will
allocate cgroup_root, and top_cpuset.css.cgrp will point to the allocated
&cgroup_root.cgrp. When the umount operation is executed,
top_cpuset.css.cgrp will be rebound to &cgrp_dfl_root.cgrp.
The problem is that when rebinding to cgrp_dfl_root, there are cases
where the cgroup_root allocated by setting up the root for cgroup v1
is cached. This could lead to a Use-After-Free (UAF) if it is
subsequently freed. The descendant cgroups of cgroup v1 can only be
freed after the css is released. However, the css of the root will never
be released, yet the cgroup_root should be freed when it is unmounted.
This means that obtaining a reference to the css of the root does
not guarantee that css.cgrp->root will not be freed.
Fix this problem by using rcu_read_lock in proc_cpuset_show().
As cgroup_root is kfree_rcu after commit d23b5c577715
("cgroup: Make operations on the cgroup root_list RCU safe"),
css->cgroup won't be freed during the critical section.
To call cgroup_path_ns_locked, css_set_lock is needed, so it is safe to
replace task_get_css with task_css.
[1] https://syzkaller.appspot.com/bug?extid=9b1ff7be974a403aa4cd
Fixes:
|
||
|
Phil Chang
|
ccef3adcb8 |
hrtimer: Prevent queuing of hrtimer without a function callback
[ Upstream commit 5a830bbce3af16833fe0092dec47b6dd30279825 ] The hrtimer function callback must not be NULL. It has to be specified by the call side but it is not validated by the hrtimer code. When a hrtimer is queued without a function callback, the kernel crashes with a null pointer dereference when trying to execute the callback in __run_hrtimer(). Introduce a validation before queuing the hrtimer in hrtimer_start_range_ns(). [anna-maria: Rephrase commit message] Signed-off-by: Phil Chang <phil.chang@mediatek.com> Signed-off-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Anna-Maria Behnsen <anna-maria@linutronix.de> Signed-off-by: Sasha Levin <sashal@kernel.org> |
||
|
Greg Kroah-Hartman
|
bbc4834e22 |
Merge 4.19.320 into android-4.19-stable
Changes in 4.19.320
platform/chrome: cros_ec_debugfs: fix wrong EC message version
hfsplus: fix to avoid false alarm of circular locking
x86/of: Return consistent error type from x86_of_pci_irq_enable()
x86/pci/intel_mid_pci: Fix PCIBIOS_* return code handling
x86/pci/xen: Fix PCIBIOS_* return code handling
x86/platform/iosf_mbi: Convert PCIBIOS_* return codes to errnos
hwmon: (adt7475) Fix default duty on fan is disabled
pwm: stm32: Always do lazy disabling
hwmon: (max6697) Fix underflow when writing limit attributes
hwmon: Introduce SENSOR_DEVICE_ATTR_{RO, RW, WO} and variants
hwmon: (max6697) Auto-convert to use SENSOR_DEVICE_ATTR_{RO, RW, WO}
hwmon: (max6697) Fix swapped temp{1,8} critical alarms
arm64: dts: rockchip: Increase VOP clk rate on RK3328
m68k: atari: Fix TT bootup freeze / unexpected (SCU) interrupt messages
x86/xen: Convert comma to semicolon
m68k: cmpxchg: Fix return value for default case in __arch_xchg()
wifi: brcmsmac: LCN PHY code is used for BCM4313 2G-only device
net/smc: Allow SMC-D 1MB DMB allocations
net/smc: set rmb's SG_MAX_SINGLE_ALLOC limitation only when CONFIG_ARCH_NO_SG_CHAIN is defined
selftests/bpf: Check length of recv in test_sockmap
wifi: cfg80211: fix typo in cfg80211_calculate_bitrate_he()
wifi: cfg80211: handle 2x996 RU allocation in cfg80211_calculate_bitrate_he()
net: fec: Refactor: #define magic constants
net: fec: Fix FEC_ECR_EN1588 being cleared on link-down
ipvs: Avoid unnecessary calls to skb_is_gso_sctp
perf: Fix perf_aux_size() for greater-than 32-bit size
perf: Prevent passing zero nr_pages to rb_alloc_aux()
bna: adjust 'name' buf size of bna_tcb and bna_ccb structures
selftests: forwarding: devlink_lib: Wait for udev events after reloading
media: imon: Fix race getting ictx->lock
saa7134: Unchecked i2c_transfer function result fixed
media: uvcvideo: Allow entity-defined get_info and get_cur
media: uvcvideo: Override default flags
media: renesas: vsp1: Fix _irqsave and _irq mix
media: renesas: vsp1: Store RPF partition configuration per RPF instance
leds: trigger: Unregister sysfs attributes before calling deactivate()
perf report: Fix condition in sort__sym_cmp()
drm/etnaviv: fix DMA direction handling for cached RW buffers
mfd: omap-usb-tll: Use struct_size to allocate tll
ext4: avoid writing unitialized memory to disk in EA inodes
sparc64: Fix incorrect function signature and add prototype for prom_cif_init
PCI: Equalize hotplug memory and io for occupied and empty slots
PCI: Fix resource double counting on remove & rescan
RDMA/mlx4: Fix truncated output warning in mad.c
RDMA/mlx4: Fix truncated output warning in alias_GUID.c
RDMA/rxe: Don't set BTH_ACK_MASK for UC or UD QPs
mtd: make mtd_test.c a separate module
Input: elan_i2c - do not leave interrupt disabled on suspend failure
MIPS: Octeron: remove source file executable bit
powerpc/xmon: Fix disassembly CPU feature checks
macintosh/therm_windtunnel: fix module unload.
bnxt_re: Fix imm_data endianness
ice: Rework flex descriptor programming
netfilter: ctnetlink: use helper function to calculate expect ID
pinctrl: core: fix possible memory leak when pinctrl_enable() fails
pinctrl: single: fix possible memory leak when pinctrl_enable() fails
pinctrl: ti: ti-iodelay: Drop if block with always false condition
pinctrl: ti: ti-iodelay: fix possible memory leak when pinctrl_enable() fails
pinctrl: freescale: mxs: Fix refcount of child
fs/nilfs2: remove some unused macros to tame gcc
nilfs2: avoid undefined behavior in nilfs_cnt32_ge macro
tick/broadcast: Make takeover of broadcast hrtimer reliable
net: netconsole: Disable target before netpoll cleanup
af_packet: Handle outgoing VLAN packets without hardware offloading
ipv6: take care of scope when choosing the src addr
char: tpm: Fix possible memory leak in tpm_bios_measurements_open()
media: venus: fix use after free in vdec_close
hfs: fix to initialize fields of hfs_inode_info after hfs_alloc_inode()
drm/gma500: fix null pointer dereference in cdv_intel_lvds_get_modes
drm/gma500: fix null pointer dereference in psb_intel_lvds_get_modes
m68k: amiga: Turn off Warp1260 interrupts during boot
ext4: check dot and dotdot of dx_root before making dir indexed
ext4: make sure the first directory block is not a hole
wifi: mwifiex: Fix interface type change
leds: ss4200: Convert PCIBIOS_* return codes to errnos
tools/memory-model: Fix bug in lock.cat
hwrng: amd - Convert PCIBIOS_* return codes to errnos
PCI: hv: Return zero, not garbage, when reading PCI_INTERRUPT_PIN
binder: fix hang of unregistered readers
scsi: qla2xxx: Return ENOBUFS if sg_cnt is more than one for ELS cmds
f2fs: fix to don't dirty inode for readonly filesystem
clk: davinci: da8xx-cfgchip: Initialize clk_init_data before use
ubi: eba: properly rollback inside self_check_eba
decompress_bunzip2: fix rare decompression failure
kobject_uevent: Fix OOB access within zap_modalias_env()
rtc: cmos: Fix return value of nvmem callbacks
scsi: qla2xxx: During vport delete send async logout explicitly
scsi: qla2xxx: validate nvme_local_port correctly
perf/x86/intel/pt: Fix topa_entry base length
watchdog/perf: properly initialize the turbo mode timestamp and rearm counter
platform: mips: cpu_hwmon: Disable driver on unsupported hardware
RDMA/iwcm: Fix a use-after-free related to destroying CM IDs
selftests/sigaltstack: Fix ppc64 GCC build
nilfs2: handle inconsistent state in nilfs_btnode_create_block()
kdb: Fix bound check compiler warning
kdb: address -Wformat-security warnings
kdb: Use the passed prompt in kdb_position_cursor()
jfs: Fix array-index-out-of-bounds in diFree
dma: fix call order in dmam_free_coherent
MIPS: SMP-CPS: Fix address for GCR_ACCESS register for CM3 and later
net: ip_rt_get_source() - use new style struct initializer instead of memset
ipv4: Fix incorrect source address in Record Route option
net: bonding: correctly annotate RCU in bond_should_notify_peers()
tipc: Return non-zero value from tipc_udp_addr2str() on error
mISDN: Fix a use after free in hfcmulti_tx()
mm: avoid overflows in dirty throttling logic
PCI: rockchip: Make 'ep-gpios' DT property optional
PCI: rockchip: Use GPIOD_OUT_LOW flag while requesting ep_gpio
parport: parport_pc: Mark expected switch fall-through
parport: Convert printk(KERN_<LEVEL> to pr_<level>(
parport: Standardize use of printmode
dev/parport: fix the array out-of-bounds risk
driver core: Cast to (void *) with __force for __percpu pointer
devres: Fix memory leakage caused by driver API devm_free_percpu()
perf/x86/intel/pt: Export pt_cap_get()
perf/x86/intel/pt: Use helpers to obtain ToPA entry size
perf/x86/intel/pt: Use pointer arithmetics instead in ToPA entry calculation
perf/x86/intel/pt: Split ToPA metadata and page layout
perf/x86/intel/pt: Fix a topa_entry base address calculation
remoteproc: imx_rproc: ignore mapping vdev regions
remoteproc: imx_rproc: Fix ignoring mapping vdev regions
remoteproc: imx_rproc: Skip over memory region when node value is NULL
drm/vmwgfx: Fix overlay when using Screen Targets
net/iucv: fix use after free in iucv_sock_close()
ipv6: fix ndisc_is_useropt() handling for PIO
protect the fetch of ->fd[fd] in do_dup2() from mispredictions
ALSA: usb-audio: Correct surround channels in UAC1 channel map
net: usb: sr9700: fix uninitialized variable use in sr_mdio_read
irqchip/mbigen: Fix mbigen node address layout
x86/mm: Fix pti_clone_pgtable() alignment assumption
net: usb: qmi_wwan: fix memory leak for not ip packets
net: linkwatch: use system_unbound_wq
Bluetooth: l2cap: always unlock channel in l2cap_conless_channel()
net: fec: Stop PPS on driver remove
md/raid5: avoid BUG_ON() while continue reshape after reassembling
clocksource/drivers/sh_cmt: Address race condition for clock events
PCI: Add Edimax Vendor ID to pci_ids.h
udf: prevent integer overflow in udf_bitmap_free_blocks()
wifi: nl80211: don't give key data to userspace
btrfs: fix bitmap leak when loading free space cache on duplicate entry
media: uvcvideo: Ignore empty TS packets
media: uvcvideo: Fix the bandwdith quirk on USB 3.x
jbd2: avoid memleak in jbd2_journal_write_metadata_buffer
s390/sclp: Prevent release of buffer in I/O
SUNRPC: Fix a race to wake a sync task
ext4: fix wrong unit use in ext4_mb_find_by_goal
arm64: Add support for SB barrier and patch in over DSB; ISB sequences
arm64: cpufeature: Force HWCAP to be based on the sysreg visible to user-space
arm64: Add Neoverse-V2 part
arm64: cputype: Add Cortex-X4 definitions
arm64: cputype: Add Neoverse-V3 definitions
arm64: errata: Add workaround for Arm errata 3194386 and 3312417
arm64: cputype: Add Cortex-X3 definitions
arm64: cputype: Add Cortex-A720 definitions
arm64: cputype: Add Cortex-X925 definitions
arm64: errata: Unify speculative SSBS errata logic
arm64: errata: Expand speculative SSBS workaround
arm64: cputype: Add Cortex-X1C definitions
arm64: cputype: Add Cortex-A725 definitions
arm64: errata: Expand speculative SSBS workaround (again)
i2c: smbus: Don't filter out duplicate alerts
i2c: smbus: Improve handling of stuck alerts
i2c: smbus: Send alert notifications to all devices if source not found
bpf: kprobe: remove unused declaring of bpf_kprobe_override
spi: lpspi: Replace all "master" with "controller"
spi: lpspi: Add slave mode support
spi: lpspi: Let watermark change with send data length
spi: lpspi: Add i.MX8 boards support for lpspi
spi: lpspi: add the error info of transfer speed setting
spi: fsl-lpspi: remove unneeded array
spi: spi-fsl-lpspi: Fix scldiv calculation
ALSA: line6: Fix racy access to midibuf
usb: vhci-hcd: Do not drop references before new references are gained
USB: serial: debug: do not echo input by default
usb: gadget: core: Check for unset descriptor
scsi: ufs: core: Fix hba->last_dme_cmd_tstamp timestamp updating logic
tick/broadcast: Move per CPU pointer access into the atomic section
ntp: Clamp maxerror and esterror to operating range
driver core: Fix uevent_show() vs driver detach race
ntp: Safeguard against time_constant overflow
serial: core: check uartclk for zero to avoid divide by zero
power: supply: axp288_charger: Fix constant_charge_voltage writes
power: supply: axp288_charger: Round constant_charge_voltage writes down
tracing: Fix overflow in get_free_elt()
x86/mtrr: Check if fixed MTRRs exist before saving them
drm/bridge: analogix_dp: properly handle zero sized AUX transactions
drm/mgag200: Set DDC timeout in milliseconds
kbuild: Fix '-S -c' in x86 stack protector scripts
netfilter: nf_tables: set element extended ACK reporting support
netfilter: nf_tables: use timestamp to check for set element timeout
netfilter: nf_tables: prefer nft_chain_validate
arm64: cpufeature: Fix the visibility of compat hwcaps
media: uvcvideo: Use entity get_cur in uvc_ctrl_set
drm/i915/gem: Fix Virtual Memory mapping boundaries calculation
exec: Fix ToCToU between perm check and set-uid/gid usage
nvme/pci: Add APST quirk for Lenovo N60z laptop
Linux 4.19.320
Change-Id: I12efa55c04d97f29d34f1a49511948735871b2bd
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
|
||
|
Sebastiano Barezzi
|
b8aeeeba56 |
Merge remote-tracking branch 'qcom_sm8250/lineage-20' into lineage-21
Change-Id: I3159ae2c81329a81f9f6d4feba3fd1324a86b4f6 |
||
|
Nathan Chancellor
|
58db0d99d2 |
tracing: Fix clang -Wint-in-bool-context warnings in IF_ASSIGN macro
After r372664 in clang, the IF_ASSIGN macro causes a couple hundred
warnings along the lines of:
kernel/trace/trace_output.c:1331:2: warning: converting the enum
constant to a boolean [-Wint-in-bool-context]
kernel/trace/trace.h:409:3: note: expanded from macro
'trace_assign_type'
IF_ASSIGN(var, ent, struct ftrace_graph_ret_entry,
^
kernel/trace/trace.h:371:14: note: expanded from macro 'IF_ASSIGN'
WARN_ON(id && (entry)->type != id); \
^
264 warnings generated.
This warning can catch issues with constructs like:
if (state == A || B)
where the developer really meant:
if (state == A || state == B)
This is currently the only occurrence of the warning in the kernel
tree across defconfig, allyesconfig, allmodconfig for arm32, arm64,
and x86_64. Add the implicit '!= 0' to the WARN_ON statement to fix
the warnings and find potential issues in the future.
Link:
|
||
|
Tze-nan Wu
|
302ceb625d |
tracing: Fix overflow in get_free_elt()
commit bcf86c01ca4676316557dd482c8416ece8c2e143 upstream.
"tracing_map->next_elt" in get_free_elt() is at risk of overflowing.
Once it overflows, new elements can still be inserted into the tracing_map
even though the maximum number of elements (`max_elts`) has been reached.
Continuing to insert elements after the overflow could result in the
tracing_map containing "tracing_map->max_size" elements, leaving no empty
entries.
If any attempt is made to insert an element into a full tracing_map using
`__tracing_map_insert()`, it will cause an infinite loop with preemption
disabled, leading to a CPU hang problem.
Fix this by preventing any further increments to "tracing_map->next_elt"
once it reaches "tracing_map->max_elt".
Cc: stable@vger.kernel.org
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Fixes:
|
||
|
Justin Stitt
|
a13f8b269b |
ntp: Safeguard against time_constant overflow
commit 06c03c8edce333b9ad9c6b207d93d3a5ae7c10c0 upstream. Using syzkaller with the recently reintroduced signed integer overflow sanitizer produces this UBSAN report: UBSAN: signed-integer-overflow in ../kernel/time/ntp.c:738:18 9223372036854775806 + 4 cannot be represented in type 'long' Call Trace: handle_overflow+0x171/0x1b0 __do_adjtimex+0x1236/0x1440 do_adjtimex+0x2be/0x740 The user supplied time_constant value is incremented by four and then clamped to the operating range. Before commit |
||
|
Justin Stitt
|
9dfe2eef1e |
ntp: Clamp maxerror and esterror to operating range
[ Upstream commit 87d571d6fb77ec342a985afa8744bb9bb75b3622 ] Using syzkaller alongside the newly reintroduced signed integer overflow sanitizer spits out this report: UBSAN: signed-integer-overflow in ../kernel/time/ntp.c:461:16 9223372036854775807 + 500 cannot be represented in type 'long' Call Trace: handle_overflow+0x171/0x1b0 second_overflow+0x2d6/0x500 accumulate_nsecs_to_secs+0x60/0x160 timekeeping_advance+0x1fe/0x890 update_wall_time+0x10/0x30 time_maxerror is unconditionally incremented and the result is checked against NTP_PHASE_LIMIT, but the increment itself can overflow, resulting in wrap-around to negative space. Before commit |
||
|
Thomas Gleixner
|
f54abf332a |
tick/broadcast: Move per CPU pointer access into the atomic section
commit 6881e75237a84093d0986f56223db3724619f26e upstream.
The recent fix for making the take over of the broadcast timer more
reliable retrieves a per CPU pointer in preemptible context.
This went unnoticed as compilers hoist the access into the non-preemptible
region where the pointer is actually used. But of course it's valid that
the compiler keeps it at the place where the code puts it which rightfully
triggers:
BUG: using smp_processor_id() in preemptible [00000000] code:
caller is hotplug_cpu__broadcast_tick_pull+0x1c/0xc0
Move it to the actual usage site which is in a non-preemptible region.
Fixes: f7d43dd206e7 ("tick/broadcast: Make takeover of broadcast hrtimer reliable")
Reported-by: David Wang <00107082@163.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Yu Liao <liaoyu15@huawei.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/87ttg56ers.ffs@tglx
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
||
|
Lance Richardson
|
fe2d246080 |
dma: fix call order in dmam_free_coherent
[ Upstream commit 28e8b7406d3a1f5329a03aa25a43aa28e087cb20 ]
dmam_free_coherent() frees a DMA allocation, which makes the
freed vaddr available for reuse, then calls devres_destroy()
to remove and free the data structure used to track the DMA
allocation. Between the two calls, it is possible for a
concurrent task to make an allocation with the same vaddr
and add it to the devres list.
If this happens, there will be two entries in the devres list
with the same vaddr and devres_destroy() can free the wrong
entry, triggering the WARN_ON() in dmam_match.
Fix by destroying the devres entry before freeing the DMA
allocation.
Tested:
kokonut //net/encryption
http://sponge2/b9145fe6-0f72-4325-ac2f-a84d81075b03
Fixes:
|
||
|
Douglas Anderson
|
90f2409c1d |
kdb: Use the passed prompt in kdb_position_cursor()
[ Upstream commit e2e821095949cde46256034975a90f88626a2a73 ]
The function kdb_position_cursor() takes in a "prompt" parameter but
never uses it. This doesn't _really_ matter since all current callers
of the function pass the same value and it's a global variable, but
it's a bit ugly. Let's clean it up.
Found by code inspection. This patch is expected to functionally be a
no-op.
Fixes: 09b35989421d ("kdb: Use format-strings rather than '\0' injection in kdb_read()")
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20240528071144.1.I0feb49839c6b6f4f2c4bf34764f5e95de3f55a66@changeid
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
|
||
|
Arnd Bergmann
|
22a100556c |
kdb: address -Wformat-security warnings
[ Upstream commit 70867efacf4370b6c7cdfc7a5b11300e9ef7de64 ]
When -Wformat-security is not disabled, using a string pointer
as a format causes a warning:
kernel/debug/kdb/kdb_io.c: In function 'kdb_read':
kernel/debug/kdb/kdb_io.c:365:36: error: format not a string literal and no format arguments [-Werror=format-security]
365 | kdb_printf(kdb_prompt_str);
| ^~~~~~~~~~~~~~
kernel/debug/kdb/kdb_io.c: In function 'kdb_getstr':
kernel/debug/kdb/kdb_io.c:456:20: error: format not a string literal and no format arguments [-Werror=format-security]
456 | kdb_printf(kdb_prompt_str);
| ^~~~~~~~~~~~~~
Use an explcit "%s" format instead.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes:
|
||
|
Wenlin Kang
|
b15593e290 |
kdb: Fix bound check compiler warning
[ Upstream commit ca976bfb3154c7bc67c4651ecd144fdf67ccaee7 ] The strncpy() function may leave the destination string buffer unterminated, better use strscpy() instead. This fixes the following warning with gcc 8.2: kernel/debug/kdb/kdb_io.c: In function 'kdb_getstr': kernel/debug/kdb/kdb_io.c:449:3: warning: 'strncpy' specified bound 256 equals destination size [-Wstringop-truncation] strncpy(kdb_prompt_str, prompt, CMD_BUFLEN); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Signed-off-by: Wenlin Kang <wenlin.kang@windriver.com> Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Stable-dep-of: 70867efacf43 ("kdb: address -Wformat-security warnings") Signed-off-by: Sasha Levin <sashal@kernel.org> |
||
|
Thomas Gleixner
|
6d94ca5d57 |
watchdog/perf: properly initialize the turbo mode timestamp and rearm counter
commit f944ffcbc2e1c759764850261670586ddf3bdabb upstream.
For systems on which the performance counter can expire early due to turbo
modes the watchdog handler has a safety net in place which validates that
since the last watchdog event there has at least 4/5th of the watchdog
period elapsed.
This works reliably only after the first watchdog event because the per
CPU variable which holds the timestamp of the last event is never
initialized.
So a first spurious event will validate against a timestamp of 0 which
results in a delta which is likely to be way over the 4/5 threshold of the
period. As this might happen before the first watchdog hrtimer event
increments the watchdog counter, this can lead to false positives.
Fix this by initializing the timestamp before enabling the hardware event.
Reset the rearm counter as well, as that might be non zero after the
watchdog was disabled and reenabled.
Link: https://lkml.kernel.org/r/87frsfu15a.ffs@tglx
Fixes:
|
||
|
Yu Liao
|
dfe19aa913 |
tick/broadcast: Make takeover of broadcast hrtimer reliable
commit f7d43dd206e7e18c182f200e67a8db8c209907fa upstream.
Running the LTP hotplug stress test on a aarch64 machine results in
rcu_sched stall warnings when the broadcast hrtimer was owned by the
un-plugged CPU. The issue is the following:
CPU1 (owns the broadcast hrtimer) CPU2
tick_broadcast_enter()
// shutdown local timer device
broadcast_shutdown_local()
...
tick_broadcast_exit()
clockevents_switch_state(dev, CLOCK_EVT_STATE_ONESHOT)
// timer device is not programmed
cpumask_set_cpu(cpu, tick_broadcast_force_mask)
initiates offlining of CPU1
take_cpu_down()
/*
* CPU1 shuts down and does not
* send broadcast IPI anymore
*/
takedown_cpu()
hotplug_cpu__broadcast_tick_pull()
// move broadcast hrtimer to this CPU
clockevents_program_event()
bc_set_next()
hrtimer_start()
/*
* timer device is not programmed
* because only the first expiring
* timer will trigger clockevent
* device reprogramming
*/
What happens is that CPU2 exits broadcast mode with force bit set, then the
local timer device is not reprogrammed and CPU2 expects to receive the
expired event by the broadcast IPI. But this does not happen because CPU1
is offlined by CPU2. CPU switches the clockevent device to ONESHOT state,
but does not reprogram the device.
The subsequent reprogramming of the hrtimer broadcast device does not
program the clockevent device of CPU2 either because the pending expiry
time is already in the past and the CPU expects the event to be delivered.
As a consequence all CPUs which wait for a broadcast event to be delivered
are stuck forever.
Fix this issue by reprogramming the local timer device if the broadcast
force bit of the CPU is set so that the broadcast hrtimer is delivered.
[ tglx: Massage comment and change log. Add Fixes tag ]
Fixes:
|
||
|
Adrian Hunter
|
d7b1a76f33 |
perf: Prevent passing zero nr_pages to rb_alloc_aux()
[ Upstream commit dbc48c8f41c208082cfa95e973560134489e3309 ]
nr_pages is unsigned long but gets passed to rb_alloc_aux() as an int,
and is stored as an int.
Only power-of-2 values are accepted, so if nr_pages is a 64_bit value, it
will be passed to rb_alloc_aux() as zero.
That is not ideal because:
1. the value is incorrect
2. rb_alloc_aux() is at risk of misbehaving, although it manages to
return -ENOMEM in that case, it is a result of passing zero to get_order()
even though the get_order() result is documented to be undefined in that
case.
Fix by simply validating the maximum supported value in the first place.
Use -ENOMEM error code for consistency with the current error code that
is returned in that case.
Fixes:
|