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git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs
Pull zonefs fixes from Damien Le Moal:
"One fix and one trivial update for rc6:
- Add MODULE_ALIAS_FS to get automatic module loading on mount
(Naohiro)
- Update Damien's email address in the MAINTAINERS file (me)"
* tag 'zonefs-5.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dlemoal/zonefs:
MAITAINERS: Change zonefs maintainer email address
zonefs: add MODULE_ALIAS_FS
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git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fix from James Bottomley:
"One driver fix: the pm8001 has never actually worked on a system with
an IOMMU and this fixes that use case"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: pm8001: Fix phys_to_virt() usage on dma_addr_t
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"A few more fixes, almost all error handling one-liners and for stable.
- regression fix in directory logging items
- regression fix of extent buffer status bits handling after an error
- fix memory leak in error handling path in tree-log
- fix freeing invalid anon device number when handling errors during
subvolume creation
- fix warning when freeing leaf after subvolume creation failure
- fix missing blkdev put in device scan error handling
- fix invalid delayed ref after subvolume creation failure"
* tag 'for-5.16-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: fix missing blkdev_put() call in btrfs_scan_one_device()
btrfs: fix warning when freeing leaf after subvolume creation failure
btrfs: fix invalid delayed ref after subvolume creation failure
btrfs: check WRITE_ERR when trying to read an extent buffer
btrfs: fix missing last dir item offset update when logging directory
btrfs: fix double free of anon_dev after failure to create subvolume
btrfs: fix memory leak in __add_inode_ref()
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fix from Paul Moore:
"Another small SELinux fix for v5.16 to ensure that we don't block on
memory allocations while holding a spinlock.
This passes all our tests without problem"
* tag 'selinux-pr-20211217' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix sleeping function called from invalid context
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
- A handful of DT updates for the SiFive HiFive Unmatched, that fix the
regulator handling. These should stop some warning spew.
- A pair of fixes for both the SiFive Hifive Unleashed and Unmatched,
that correctly hook up the MMC card detect signal.
* tag 'riscv-for-linus-5.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
riscv: dts: sifive unmatched: Link the tmp451 with its power supply
riscv: dts: sifive unmatched: Fix regulator for board rev3
riscv: dts: sifive unmatched: Expose the PMIC sub-functions
riscv: dts: sifive unmatched: Expose the board ID eeprom
riscv: dts: sifive unmatched: Name gpio lines
riscv: dts: unmatched: Add gpio card detect to mmc-spi-slot
riscv: dts: unleashed: Add gpio card detect to mmc-spi-slot
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Pull block fixes from Jens Axboe:
- Fix for hammering on the delayed run queue timer (me)
- bcache regression fix for this merge window (Lin)
- Fix a divide-by-zero in the blk-iocost code (Tejun)
* tag 'block-5.16-2021-12-17' of git://git.kernel.dk/linux-block:
bcache: fix NULL pointer reference in cached_dev_detach_finish
block: reduce kblockd_mod_delayed_work_on() CPU consumption
iocost: Fix divide-by-zero on donation from low hweight cgroup
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Pull io_uring fix from Jens Axboe:
"Just a single fix, fixing an issue with the worker creation change
that was merged last week"
* tag 'io_uring-5.16-2021-12-17' of git://git.kernel.dk/linux-block:
io-wq: drop wqe lock before creating new worker
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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine fixes from Vinod Koul:
"A bunch of driver fixes, notably:
- uninit variable fix for dw-axi-dmac driver
- return value check dw-edma driver
- calling wq quiesce inside spinlock and missed completion for idxd
driver
- mod alias fix for st_fdma driver"
* tag 'dmaengine-fix-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
dmaengine: st_fdma: fix MODULE_ALIAS
dmaengine: idxd: fix missed completion on abort path
dmaengine: ti: k3-udma: Fix smatch warnings
dmaengine: idxd: fix calling wq quiesce inside spinlock
dmaengine: dw-edma: Fix return value check for dma_set_mask_and_coherent()
dmaengine: dw-axi-dmac: Fix uninitialized variable in axi_chan_block_xfer_start()
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Pull drm fixes from Dave Airlie:
"Mostly amdgpu fixes this week scattered around the driver, otherwise
one i915, one ast, one simpledrm. There is a revert in the fb-helper
for places userspace was using a string that we tried to change.
i915:
- Fix a bound check in the DMC fw load.
ast:
- NULL ptr deref fix
simpledrm:
- pixel clock units fix
fb-helper:
- userspace regression revert
amdgpu:
- Fix RLC register offset
- GMC fix
- Properly cache SMU FW version on Yellow Carp
- Fix missing callback on DCN3.1
- Reset DMCUB before HW init
- Fix for GMC powergating on PCO
- Fix a possible memory leak in GPU metrics table handling on RN"
* tag 'drm-fixes-2021-12-17-1' of git://anongit.freedesktop.org/drm/drm:
drm/amd/pm: fix a potential gpu_metrics_table memory leak
drm/amdgpu: correct the wrong cached state for GMC on PICASSO
drm/amd/display: Reset DMCUB before HW init
drm/amd/display: Set exit_optimized_pwr_state for DCN31
drm/amd/pm: fix reading SMU FW version from amdgpu_firmware_info on YC
drm/amdgpu: don't override default ECO_BITs setting
drm/amdgpu: correct register access for RLC_JUMP_TABLE_RESTORE
drm/i915/display: Fix an unsigned subtraction which can never be negative.
drm/ast: potential dereference of null pointer
drm: simpledrm: fix wrong unit with pixel clock
Revert "drm/fb-helper: improve DRM fbdev emulation device names"
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Update my email address from damien.lemoal@wdc.com to
damien.lemoal@opensource.wdc.com.
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Add MODULE_ALIAS_FS() to load the module automatically when you do "mount
-t zonefs".
Fixes: 8dcc1a9d90c1 ("fs: New zonefs file system")
Cc: stable <stable@vger.kernel.org> # 5.6+
Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: Johannes Thumshirn <jth@kernel.org>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
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Fixes the following probe warning:
lm90 0-004c: Looking up vcc-supply from device tree
lm90 0-004c: Looking up vcc-supply property in node /soc/i2c@10030000/temperature-sensor@4c failed
lm90 0-004c: supply vcc not found, using dummy regulator
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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The existing values are rejected by the da9063 regulator driver, as they
are unachievable with the declared chip setup (non-merged vcore and bmem
are unable to provide the declared curent).
Fix voltages to match rev3 schematics, which also matches their boot-up
configuration within the chip's available precision.
Declare bcore1/bcore2 and bmem/bio as merged.
Set ldo09 and ldo10 as always-on as their consumers are not declared but
exist.
Drop ldo current limits as there is no current limit feature for these
regulators in the DA9063. Fixes warnings like:
DA9063_LDO3: Operation of current configuration missing
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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These sub-functions are available in the chip revision on this board, so
expose them.
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Mark it as read-only as it is factory-programmed with identifying
information, and no executable nor configuration:
- eth MAC address
- board model (PCB version, BoM version)
- board serial number
Accidental modification would cause misidentification which could brick
the board, so marking read-only seem like both a safe and non-constraining
choice.
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Follow the pin descriptions given in the version 3 of the board schematics.
Signed-off-by: Vincent Pelletier <plr.vincent@gmail.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-5.16-2021-12-15:
amdgpu:
- Fix RLC register offset
- GMC fix
- Properly cache SMU FW version on Yellow Carp
- Fix missing callback on DCN3.1
- Reset DMCUB before HW init
- Fix for GMC powergating on PCO
- Fix a possible memory leak in GPU metrics table handling on RN
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211216035239.5787-1-alexander.deucher@amd.com
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ssh://git.freedesktop.org/git/drm/drm-misc into drm-fixes
One null pointer dereference fix for ast, a pixel clock unit fix for
simpledrm and a user-space regression revert for fb-helper
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20211216082603.pm6yzlckmxvwnqyv@houat
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit fix from Paul Moore:
"A single patch to fix a problem where the audit queue could grow
unbounded when the audit daemon is forcibly stopped"
* tag 'audit-pr-20211216' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: improve robustness of the audit queue handling
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from mac80211, wifi, bpf.
Relatively large batches of fixes from BPF and the WiFi stack, calm in
general networking.
Current release - regressions:
- dpaa2-eth: fix buffer overrun when reporting ethtool statistics
Current release - new code bugs:
- bpf: fix incorrect state pruning for <8B spill/fill
- iavf:
- add missing unlocks in iavf_watchdog_task()
- do not override the adapter state in the watchdog task (again)
- mlxsw: spectrum_router: consolidate MAC profiles when possible
Previous releases - regressions:
- mac80211 fixes:
- rate control, avoid driver crash for retransmitted frames
- regression in SSN handling of addba tx
- a memory leak where sta_info is not freed
- marking TX-during-stop for TX in in_reconfig, prevent stall
- cfg80211: acquire wiphy mutex on regulatory work
- wifi drivers: fix build regressions and LED config dependency
- virtio_net: fix rx_drops stat for small pkts
- dsa: mv88e6xxx: unforce speed & duplex in mac_link_down()
Previous releases - always broken:
- bpf fixes:
- kernel address leakage in atomic fetch
- kernel address leakage in atomic cmpxchg's r0 aux reg
- signed bounds propagation after mov32
- extable fixup offset
- extable address check
- mac80211:
- fix the size used for building probe request
- send ADDBA requests using the tid/queue of the aggregation
session
- agg-tx: don't schedule_and_wake_txq() under sta->lock, avoid
deadlocks
- validate extended element ID is present
- mptcp:
- never allow the PM to close a listener subflow (null-defer)
- clear 'kern' flag from fallback sockets, prevent crash
- fix deadlock in __mptcp_push_pending()
- inet_diag: fix kernel-infoleak for UDP sockets
- xsk: do not sleep in poll() when need_wakeup set
- smc: avoid very long waits in smc_release()
- sch_ets: don't remove idle classes from the round-robin list
- netdevsim:
- zero-initialize memory for bpf map's value, prevent info leak
- don't let user space overwrite read only (max) ethtool parms
- ixgbe: set X550 MDIO speed before talking to PHY
- stmmac:
- fix null-deref in flower deletion w/ VLAN prio Rx steering
- dwmac-rk: fix oob read in rk_gmac_setup
- ice: time stamping fixes
- systemport: add global locking for descriptor life cycle"
* tag 'net-5.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (89 commits)
bpf, selftests: Fix racing issue in btf_skc_cls_ingress test
selftest/bpf: Add a test that reads various addresses.
bpf: Fix extable address check.
bpf: Fix extable fixup offset.
bpf, selftests: Add test case trying to taint map value pointer
bpf: Make 32->64 bounds propagation slightly more robust
bpf: Fix signed bounds propagation after mov32
sit: do not call ipip6_dev_free() from sit_init_net()
net: systemport: Add global locking for descriptor lifecycle
net/smc: Prevent smc_release() from long blocking
net: Fix double 0x prefix print in SKB dump
virtio_net: fix rx_drops stat for small pkts
dsa: mv88e6xxx: fix debug print for SPEED_UNFORCED
sfc_ef100: potential dereference of null pointer
net: stmmac: dwmac-rk: fix oob read in rk_gmac_setup
net: usb: lan78xx: add Allied Telesis AT29M2-AF
net/packet: rx_owner_map depends on pg_vec
netdevsim: Zero-initialize memory for new map's value in function nsim_bpf_map_alloc
dpaa2-eth: fix ethtool statistics
ixgbe: set X550 MDIO speed before talking to PHY
...
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git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC fixes from Arnd Bergmann:
"There are a number of DT fixes, mostly for mistakes found through
static checking of the dts files again, as well as a couple of minor
changes to address incorrect DT settings.
For i.MX, there is yet another series of devitree changes to update
RGMII delay settings for ethernet, which is an ongoing problem after
some driver changes.
For SoC specific device drivers, a number of smaller fixes came up:
- i.MX SoC identification was incorrectly registered non-i.MX
machines when the driver is built-in
- One fix on imx8m-blk-ctrl driver to get i.MX8MM MIPI reset work
properly
- a few compile fixes for warnings that get in the way of -Werror
- a string overflow in the scpi firmware driver
- a boot failure with FORTIFY_SOURCE on Rockchips machines
- broken error handling in the AMD TEE driver
- a revert for a tegra reset driver commit that broke HDA"
* tag 'soc-fixes-5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (25 commits)
soc/tegra: fuse: Fix bitwise vs. logical OR warning
firmware: arm_scpi: Fix string overflow in SCPI genpd driver
soc: imx: Register SoC device only on i.MX boards
soc: imx: imx8m-blk-ctrl: Fix imx8mm mipi reset
ARM: dts: imx6ull-pinfunc: Fix CSI_DATA07__ESAI_TX0 pad name
arm64: dts: imx8mq: remove interconnect property from lcdif
ARM: socfpga: dts: fix qspi node compatible
arm64: dts: apple: add #interrupt-cells property to pinctrl nodes
dt-bindings: i2c: apple,i2c: allow multiple compatibles
arm64: meson: remove COMMON_CLK
arm64: meson: fix dts for JetHub D1
tee: amdtee: fix an IS_ERR() vs NULL bug
arm64: dts: apple: change ethernet0 device type to ethernet
arm64: dts: ten64: remove redundant interrupt declaration for gpio-keys
arm64: dts: rockchip: fix poweroff on helios64
arm64: dts: rockchip: fix audio-supply for Rock Pi 4
arm64: dts: rockchip: fix rk3399-leez-p710 vcc3v3-lan supply
arm64: dts: rockchip: fix rk3308-roc-cc vcc-sd supply
arm64: dts: rockchip: remove mmc-hs400-enhanced-strobe from rk3399-khadas-edge
ARM: rockchip: Use memcpy_toio instead of memcpy on smp bring-up
...
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selinux_sb_mnt_opts_compat() is called via sget_fc() under the sb_lock
spinlock, so it can't use GFP_KERNEL allocations:
[ 868.565200] BUG: sleeping function called from invalid context at
include/linux/sched/mm.h:230
[ 868.568246] in_atomic(): 1, irqs_disabled(): 0,
non_block: 0, pid: 4914, name: mount.nfs
[ 868.569626] preempt_count: 1, expected: 0
[ 868.570215] RCU nest depth: 0, expected: 0
[ 868.570809] Preemption disabled at:
[ 868.570810] [<0000000000000000>] 0x0
[ 868.571848] CPU: 1 PID: 4914 Comm: mount.nfs Kdump: loaded
Tainted: G W 5.16.0-rc5.2585cf9dfa #1
[ 868.573273] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
BIOS 1.14.0-4.fc34 04/01/2014
[ 868.574478] Call Trace:
[ 868.574844] <TASK>
[ 868.575156] dump_stack_lvl+0x34/0x44
[ 868.575692] __might_resched.cold+0xd6/0x10f
[ 868.576308] slab_pre_alloc_hook.constprop.0+0x89/0xf0
[ 868.577046] __kmalloc_track_caller+0x72/0x420
[ 868.577684] ? security_context_to_sid_core+0x48/0x2b0
[ 868.578569] kmemdup_nul+0x22/0x50
[ 868.579108] security_context_to_sid_core+0x48/0x2b0
[ 868.579854] ? _nfs4_proc_pathconf+0xff/0x110 [nfsv4]
[ 868.580742] ? nfs_reconfigure+0x80/0x80 [nfs]
[ 868.581355] security_context_str_to_sid+0x36/0x40
[ 868.581960] selinux_sb_mnt_opts_compat+0xb5/0x1e0
[ 868.582550] ? nfs_reconfigure+0x80/0x80 [nfs]
[ 868.583098] security_sb_mnt_opts_compat+0x2a/0x40
[ 868.583676] nfs_compare_super+0x113/0x220 [nfs]
[ 868.584249] ? nfs_try_mount_request+0x210/0x210 [nfs]
[ 868.584879] sget_fc+0xb5/0x2f0
[ 868.585267] nfs_get_tree_common+0x91/0x4a0 [nfs]
[ 868.585834] vfs_get_tree+0x25/0xb0
[ 868.586241] fc_mount+0xe/0x30
[ 868.586605] do_nfs4_mount+0x130/0x380 [nfsv4]
[ 868.587160] nfs4_try_get_tree+0x47/0xb0 [nfsv4]
[ 868.587724] vfs_get_tree+0x25/0xb0
[ 868.588193] do_new_mount+0x176/0x310
[ 868.588782] __x64_sys_mount+0x103/0x140
[ 868.589388] do_syscall_64+0x3b/0x90
[ 868.589935] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 868.590699] RIP: 0033:0x7f2b371c6c4e
[ 868.591239] Code: 48 8b 0d dd 71 0e 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e
0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 a5 00
00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d aa 71
0e 00 f7 d8 64 89 01 48
[ 868.593810] RSP: 002b:00007ffc83775d88 EFLAGS: 00000246
ORIG_RAX: 00000000000000a5
[ 868.594691] RAX: ffffffffffffffda RBX: 00007ffc83775f10 RCX: 00007f2b371c6c4e
[ 868.595504] RDX: 0000555d517247a0 RSI: 0000555d51724700 RDI: 0000555d51724540
[ 868.596317] RBP: 00007ffc83775f10 R08: 0000555d51726890 R09: 0000555d51726890
[ 868.597162] R10: 0000000000000000 R11: 0000000000000246 R12: 0000555d51726890
[ 868.598005] R13: 0000000000000003 R14: 0000555d517246e0 R15: 0000555d511ac925
[ 868.598826] </TASK>
Cc: stable@vger.kernel.org
Fixes: 69c4a42d72eb ("lsm,selinux: add new hook to compare new mount to an existing mount")
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
[PM: cleanup/line-wrap the backtrace]
Signed-off-by: Paul Moore <paul@paul-moore.com>
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Daniel Borkmann says:
====================
pull-request: bpf 2021-12-16
We've added 15 non-merge commits during the last 7 day(s) which contain
a total of 12 files changed, 434 insertions(+), 30 deletions(-).
The main changes are:
1) Fix incorrect verifier state pruning behavior for <8B register spill/fill,
from Paul Chaignon.
2) Fix x86-64 JIT's extable handling for fentry/fexit when return pointer
is an ERR_PTR(), from Alexei Starovoitov.
3) Fix 3 different possibilities that BPF verifier missed where unprivileged
could leak kernel addresses, from Daniel Borkmann.
4) Fix xsk's poll behavior under need_wakeup flag, from Magnus Karlsson.
5) Fix an oob-write in test_verifier due to a missed MAX_NR_MAPS bump,
from Kumar Kartikeya Dwivedi.
6) Fix a race in test_btf_skc_cls_ingress selftest, from Martin KaFai Lau.
* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
bpf, selftests: Fix racing issue in btf_skc_cls_ingress test
selftest/bpf: Add a test that reads various addresses.
bpf: Fix extable address check.
bpf: Fix extable fixup offset.
bpf, selftests: Add test case trying to taint map value pointer
bpf: Make 32->64 bounds propagation slightly more robust
bpf: Fix signed bounds propagation after mov32
bpf, selftests: Update test case for atomic cmpxchg on r0 with pointer
bpf: Fix kernel address leakage in atomic cmpxchg's r0 aux reg
bpf, selftests: Add test case for atomic fetch on spilled pointer
bpf: Fix kernel address leakage in atomic fetch
selftests/bpf: Fix OOB write in test_verifier
xsk: Do not sleep in poll() when need_wakeup set
selftests/bpf: Tests for state pruning with u32 spill/fill
bpf: Fix incorrect state pruning for <8B spill/fill
====================
Link: https://lore.kernel.org/r/20211216210005.13815-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The libbpf CI reported occasional failure in btf_skc_cls_ingress:
test_syncookie:FAIL:Unexpected syncookie states gen_cookie:80326634 recv_cookie:0
bpf prog error at line 97
"error at line 97" means the bpf prog cannot find the listening socket
when the final ack is received. It then skipped processing
the syncookie in the final ack which then led to "recv_cookie:0".
The problem is the userspace program did not do accept() and went
ahead to close(listen_fd) before the kernel (and the bpf prog) had
a chance to process the final ack.
The fix is to add accept() call so that the userspace will wait for
the kernel to finish processing the final ack first before close()-ing
everything.
Fixes: 9a856cae2217 ("bpf: selftest: Add test_btf_skc_cls_ingress")
Reported-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211216191630.466151-1-kafai@fb.com
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Add a function to bpf_testmod that returns invalid kernel and user addresses.
Then attach an fexit program to that function that tries to read
memory through these addresses.
This logic checks that bpf_probe_read_kernel and BPF_PROBE_MEM logic is sane.
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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The verifier checks that PTR_TO_BTF_ID pointer is either valid or NULL,
but it cannot distinguish IS_ERR pointer from valid one.
When offset is added to IS_ERR pointer it may become small positive
value which is a user address that is not handled by extable logic
and has to be checked for at the runtime.
Tighten BPF_PROBE_MEM pointer check code to prevent this case.
Fixes: 4c5de127598e ("bpf: Emit explicit NULL pointer checks for PROBE_LDX instructions.")
Reported-by: Lorenzo Fontana <lorenzo.fontana@elastic.co>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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The prog - start_of_ldx is the offset before the faulting ldx to the location
after it, so this will be used to adjust pt_regs->ip for jumping over it and
continuing, and with old temp it would have been fixed up to the wrong offset,
causing crash.
Fixes: 4c5de127598e ("bpf: Emit explicit NULL pointer checks for PROBE_LDX instructions.")
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk fix from Stephen Boyd:
"A single fix for the clk framework that needed some more bake time in
linux-next.
The problem is that two clks being registered at the same time can
lead to a busted clk tree if the parent isn't fully registered by the
time the child finds the parent. We rejigger the place where we mark
the parent as fully registered so that the child can't find the parent
until things are proper"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: Don't parent clks until the parent is fully registered
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Add a test case which tries to taint map value pointer arithmetic into a
unknown scalar with subsequent export through the map.
Before fix:
# ./test_verifier 1186
#1186/u map access: trying to leak tained dst reg FAIL
Unexpected success to load!
verification time 24 usec
stack depth 8
processed 15 insns (limit 1000000) max_states_per_insn 0 total_states 1 peak_states 1 mark_read 1
#1186/p map access: trying to leak tained dst reg FAIL
Unexpected success to load!
verification time 8 usec
stack depth 8
processed 15 insns (limit 1000000) max_states_per_insn 0 total_states 1 peak_states 1 mark_read 1
Summary: 0 PASSED, 0 SKIPPED, 2 FAILED
After fix:
# ./test_verifier 1186
#1186/u map access: trying to leak tained dst reg OK
#1186/p map access: trying to leak tained dst reg OK
Summary: 2 PASSED, 0 SKIPPED, 0 FAILED
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
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Make the bounds propagation in __reg_assign_32_into_64() slightly more
robust and readable by aligning it similarly as we did back in the
__reg_combine_64_into_32() counterpart. Meaning, only propagate or
pessimize them as a smin/smax pair.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
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For the case where both s32_{min,max}_value bounds are positive, the
__reg_assign_32_into_64() directly propagates them to their 64 bit
counterparts, otherwise it pessimises them into [0,u32_max] universe and
tries to refine them later on by learning through the tnum as per comment
in mentioned function. However, that does not always happen, for example,
in mov32 operation we call zext_32_to_64(dst_reg) which invokes the
__reg_assign_32_into_64() as is without subsequent bounds update as
elsewhere thus no refinement based on tnum takes place.
Thus, not calling into the __update_reg_bounds() / __reg_deduce_bounds() /
__reg_bound_offset() triplet as we do, for example, in case of ALU ops via
adjust_scalar_min_max_vals(), will lead to more pessimistic bounds when
dumping the full register state:
Before fix:
0: (b4) w0 = -1
1: R0_w=invP4294967295
(id=0,imm=ffffffff,
smin_value=4294967295,smax_value=4294967295,
umin_value=4294967295,umax_value=4294967295,
var_off=(0xffffffff; 0x0),
s32_min_value=-1,s32_max_value=-1,
u32_min_value=-1,u32_max_value=-1)
1: (bc) w0 = w0
2: R0_w=invP4294967295
(id=0,imm=ffffffff,
smin_value=0,smax_value=4294967295,
umin_value=4294967295,umax_value=4294967295,
var_off=(0xffffffff; 0x0),
s32_min_value=-1,s32_max_value=-1,
u32_min_value=-1,u32_max_value=-1)
Technically, the smin_value=0 and smax_value=4294967295 bounds are not
incorrect, but given the register is still a constant, they break assumptions
about const scalars that smin_value == smax_value and umin_value == umax_value.
After fix:
0: (b4) w0 = -1
1: R0_w=invP4294967295
(id=0,imm=ffffffff,
smin_value=4294967295,smax_value=4294967295,
umin_value=4294967295,umax_value=4294967295,
var_off=(0xffffffff; 0x0),
s32_min_value=-1,s32_max_value=-1,
u32_min_value=-1,u32_max_value=-1)
1: (bc) w0 = w0
2: R0_w=invP4294967295
(id=0,imm=ffffffff,
smin_value=4294967295,smax_value=4294967295,
umin_value=4294967295,umax_value=4294967295,
var_off=(0xffffffff; 0x0),
s32_min_value=-1,s32_max_value=-1,
u32_min_value=-1,u32_max_value=-1)
Without the smin_value == smax_value and umin_value == umax_value invariant
being intact for const scalars, it is possible to leak out kernel pointers
from unprivileged user space if the latter is enabled. For example, when such
registers are involved in pointer arithmtics, then adjust_ptr_min_max_vals()
will taint the destination register into an unknown scalar, and the latter
can be exported and stored e.g. into a BPF map value.
Fixes: 3f50f132d840 ("bpf: Verifier, do explicit ALU32 bounds tracking")
Reported-by: Kuee K1r0a <liulin063@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Reviewed-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fix from Catalin Marinas:
"Fix missing error code on kexec failure path"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: kexec: Fix missing error code 'ret' warning in load_other_segments()
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- Fix use after free in DM btree remove's rebalance_children()
- Fix DM integrity data corruption, introduced during 5.16 merge, due
to improper use of bvec_kmap_local()
* tag 'for-5.16/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm integrity: fix data corruption due to improper use of bvec_kmap_local
dm btree remove: fix use after free in rebalance_children()
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Since commit ac10be5cdbfa ("arm64: Use common
of_kexec_alloc_and_setup_fdt()"), smatch reports the following warning:
arch/arm64/kernel/machine_kexec_file.c:152 load_other_segments()
warn: missing error code 'ret'
Return code is not set to an error code in load_other_segments() when
of_kexec_alloc_and_setup_fdt() call returns a NULL dtb. This results
in status success (return code set to 0) being returned from
load_other_segments().
Set return code to -EINVAL if of_kexec_alloc_and_setup_fdt() returns
NULL dtb.
Signed-off-by: Lakshmi Ramasubramanian <nramas@linux.microsoft.com>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: ac10be5cdbfa ("arm64: Use common of_kexec_alloc_and_setup_fdt()")
Link: https://lore.kernel.org/r/20211210010121.101823-1-nramas@linux.microsoft.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Fix afs_add_open_map() to check that the vnode isn't already on the list
when it adds it. It's possible that afs_drop_open_mmap() decremented
the cb_nr_mmap counter, but hadn't yet got into the locked section to
remove it.
Also vnode->cb_mmap_link should be initialised, so fix that too.
Fixes: 6e0e99d58a65 ("afs: Fix mmap coherency vs 3rd-party changes")
Reported-by: kafs-testing+fedora34_64checkkafs-build-300@auristor.com
Suggested-by: Marc Dionne <marc.dionne@auristor.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Tested-by: kafs-testing+fedora34_64checkkafs-build-300@auristor.com
cc: linux-afs@lists.infradead.org
Link: https://lore.kernel.org/r/686465.1639435380@warthog.procyon.org.uk/ # v1
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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ipip6_dev_free is sit dev->priv_destructor, already called
by register_netdevice() if something goes wrong.
Alternative would be to make ipip6_dev_free() robust against
multiple invocations, but other drivers do not implement this
strategy.
syzbot reported:
dst_release underflow
WARNING: CPU: 0 PID: 5059 at net/core/dst.c:173 dst_release+0xd8/0xe0 net/core/dst.c:173
Modules linked in:
CPU: 1 PID: 5059 Comm: syz-executor.4 Not tainted 5.16.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dst_release+0xd8/0xe0 net/core/dst.c:173
Code: 4c 89 f2 89 d9 31 c0 5b 41 5e 5d e9 da d5 44 f9 e8 1d 90 5f f9 c6 05 87 48 c6 05 01 48 c7 c7 80 44 99 8b 31 c0 e8 e8 67 29 f9 <0f> 0b eb 85 0f 1f 40 00 53 48 89 fb e8 f7 8f 5f f9 48 83 c3 a8 48
RSP: 0018:ffffc9000aa5faa0 EFLAGS: 00010246
RAX: d6894a925dd15a00 RBX: 00000000ffffffff RCX: 0000000000040000
RDX: ffffc90005e19000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff816a1f42 R09: ffffed1017344f2c
R10: ffffed1017344f2c R11: 0000000000000000 R12: 0000607f462b1358
R13: 1ffffffff1bfd305 R14: ffffe8ffffcb1358 R15: dffffc0000000000
FS: 00007f66c71a2700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f88aaed5058 CR3: 0000000023e0f000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
dst_cache_destroy+0x107/0x1e0 net/core/dst_cache.c:160
ipip6_dev_free net/ipv6/sit.c:1414 [inline]
sit_init_net+0x229/0x550 net/ipv6/sit.c:1936
ops_init+0x313/0x430 net/core/net_namespace.c:140
setup_net+0x35b/0x9d0 net/core/net_namespace.c:326
copy_net_ns+0x359/0x5c0 net/core/net_namespace.c:470
create_new_namespaces+0x4ce/0xa00 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x11e/0x180 kernel/nsproxy.c:226
ksys_unshare+0x57d/0xb50 kernel/fork.c:3075
__do_sys_unshare kernel/fork.c:3146 [inline]
__se_sys_unshare kernel/fork.c:3144 [inline]
__x64_sys_unshare+0x34/0x40 kernel/fork.c:3144
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f66c882ce99
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f66c71a2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f66c893ff60 RCX: 00007f66c882ce99
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000048040200
RBP: 00007f66c8886ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6634832f R14: 00007f66c71a2300 R15: 0000000000022000
</TASK>
Fixes: cf124db566e6 ("net: Fix inconsistent teardown and release of private netdev state.")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Link: https://lore.kernel.org/r/20211216111741.1387540-1-eric.dumazet@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The descriptor list is a shared resource across all of the transmit queues, and
the locking mechanism used today only protects concurrency across a given
transmit queue between the transmit and reclaiming. This creates an opportunity
for the SYSTEMPORT hardware to work on corrupted descriptors if we have
multiple producers at once which is the case when using multiple transmit
queues.
This was particularly noticeable when using multiple flows/transmit queues and
it showed up in interesting ways in that UDP packets would get a correct UDP
header checksum being calculated over an incorrect packet length. Similarly TCP
packets would get an equally correct checksum computed by the hardware over an
incorrect packet length.
The SYSTEMPORT hardware maintains an internal descriptor list that it re-arranges
when the driver produces a new descriptor anytime it writes to the
WRITE_PORT_{HI,LO} registers, there is however some delay in the hardware to
re-organize its descriptors and it is possible that concurrent TX queues
eventually break this internal allocation scheme to the point where the
length/status part of the descriptor gets used for an incorrect data buffer.
The fix is to impose a global serialization for all TX queues in the short
section where we are writing to the WRITE_PORT_{HI,LO} registers which solves
the corruption even with multiple concurrent TX queues being used.
Fixes: 80105befdb4b ("net: systemport: add Broadcom SYSTEMPORT Ethernet MAC driver")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20211215202450.4086240-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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In nginx/wrk benchmark, there's a hung problem with high probability
on case likes that: (client will last several minutes to exit)
server: smc_run nginx
client: smc_run wrk -c 10000 -t 1 http://server
Client hangs with the following backtrace:
0 [ffffa7ce8Of3bbf8] __schedule at ffffffff9f9eOd5f
1 [ffffa7ce8Of3bc88] schedule at ffffffff9f9eløe6
2 [ffffa7ce8Of3bcaO] schedule_timeout at ffffffff9f9e3f3c
3 [ffffa7ce8Of3bd2O] wait_for_common at ffffffff9f9el9de
4 [ffffa7ce8Of3bd8O] __flush_work at ffffffff9fOfeOl3
5 [ffffa7ce8øf3bdfO] smc_release at ffffffffcO697d24 [smc]
6 [ffffa7ce8Of3be2O] __sock_release at ffffffff9f8O2e2d
7 [ffffa7ce8Of3be4ø] sock_close at ffffffff9f8ø2ebl
8 [ffffa7ce8øf3be48] __fput at ffffffff9f334f93
9 [ffffa7ce8Of3be78] task_work_run at ffffffff9flOlff5
10 [ffffa7ce8Of3beaO] do_exit at ffffffff9fOe5Ol2
11 [ffffa7ce8Of3bflO] do_group_exit at ffffffff9fOe592a
12 [ffffa7ce8Of3bf38] __x64_sys_exit_group at ffffffff9fOe5994
13 [ffffa7ce8Of3bf4O] do_syscall_64 at ffffffff9f9d4373
14 [ffffa7ce8Of3bfsO] entry_SYSCALL_64_after_hwframe at ffffffff9fa0007c
This issue dues to flush_work(), which is used to wait for
smc_connect_work() to finish in smc_release(). Once lots of
smc_connect_work() was pending or all executing work dangling,
smc_release() has to block until one worker comes to free, which
is equivalent to wait another smc_connnect_work() to finish.
In order to fix this, There are two changes:
1. For those idle smc_connect_work(), cancel it from the workqueue; for
executing smc_connect_work(), waiting for it to finish. For that
purpose, replace flush_work() with cancel_work_sync().
2. Since smc_connect() hold a reference for passive closing, if
smc_connect_work() has been cancelled, release the reference.
Fixes: 24ac3a08e658 ("net/smc: rebuild nonblocking connect")
Reported-by: Tony Lu <tonylu@linux.alibaba.com>
Tested-by: Dust Li <dust.li@linux.alibaba.com>
Reviewed-by: Dust Li <dust.li@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Acked-by: Karsten Graul <kgraul@linux.ibm.com>
Link: https://lore.kernel.org/r/1639571361-101128-1-git-send-email-alibuda@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into arm/fixes
soc/tegra: Fixes for v5.16-rc6
This contains a single build fix without which ARM allmodconfig builds
are broken if -Werror is enabled.
* tag 'tegra-for-5.16-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
soc/tegra: fuse: Fix bitwise vs. logical OR warning
Link: https://lore.kernel.org/r/20211215162618.3568474-1-thierry.reding@gmail.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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When printing netdev features %pNF already takes care of the 0x prefix,
remove the explicit one.
Fixes: 6413139dfc64 ("skbuff: increase verbosity when dumping skb data")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We found the stat of rx drops for small pkts does not increment when
build_skb fail, it's not coherent with other mode's rx drops stat.
Signed-off-by: Wenliang Wang <wangwenliang.1995@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Debug print uses invalid check to detect if speed is unforced:
(speed != SPEED_UNFORCED) should be used instead of (!speed).
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Andrey Eremeev <Axtone4all@yandex.ru>
Fixes: 96a2b40c7bd3 ("net: dsa: mv88e6xxx: add port's MAC speed setter")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The return value of kmalloc() needs to be checked.
To avoid use in efx_nic_update_stats() in case of the failure of alloc.
Fixes: b593b6f1b492 ("sfc_ef100: statistics gathering")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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KASAN reports an out-of-bounds read in rk_gmac_setup on the line:
while (ops->regs[i]) {
This happens for most platforms since the regs flexible array member is
empty, so the memory after the ops structure is being read here. It
seems that mostly this happens to contain zero anyway, so we get lucky
and everything still works.
To avoid adding redundant data to nearly all the ops structures, add a
new flag to indicate whether the regs field is valid and avoid this loop
when it is not.
Fixes: 3bb3d6b1c195 ("net: stmmac: Add RK3566/RK3568 SoC support")
Signed-off-by: John Keeping <john@metanate.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue
Tony Nguyen says:
====================
Intel Wired LAN Driver Updates 2021-12-15
This series contains updates to igb, igbvf, igc and ixgbe drivers.
Karen moves checks for invalid VF MAC filters to occur earlier for
igb.
Letu Ren fixes a double free issue in igbvf probe.
Sasha fixes incorrect min value being used when calculating for max for
igc.
Robert Schlabbach adds documentation on enabling NBASE-T support for
ixgbe.
Cyril Novikov adds missing initialization of MDIO bus speed for ixgbe.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This adds the vendor and product IDs for the AT29M2-AF which is a
lan7801-based device.
Signed-off-by: Greg Jesionowski <jesionowskigreg@gmail.com>
Link: https://lore.kernel.org/r/20211214221027.305784-1-jesionowskigreg@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Packet sockets may switch ring versions. Avoid misinterpreting state
between versions, whose fields share a union. rx_owner_map is only
allocated with a packet ring (pg_vec) and both are swapped together.
If pg_vec is NULL, meaning no packet ring was allocated, then neither
was rx_owner_map. And the field may be old state from a tpacket_v3.
Fixes: 61fad6816fc1 ("net/packet: tpacket_rcv: avoid a producer race condition")
Reported-by: Syzbot <syzbot+1ac0994a0a0c55151121@syzkaller.appspotmail.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20211215143937.106178-1-willemdebruijn.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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nsim_bpf_map_alloc
Zero-initialize memory for new map's value in function nsim_bpf_map_alloc
since it may cause a potential kernel information leak issue, as follows:
1. nsim_bpf_map_alloc calls nsim_map_alloc_elem to allocate elements for
a new map.
2. nsim_map_alloc_elem uses kmalloc to allocate map's value, but doesn't
zero it.
3. A user application can use IOCTL BPF_MAP_LOOKUP_ELEM to get specific
element's information in the map.
4. The kernel function map_lookup_elem will call bpf_map_copy_value to get
the information allocated at step-2, then use copy_to_user to copy to the
user buffer.
This can only leak information for an array map.
Fixes: 395cacb5f1a0 ("netdevsim: bpf: support fake map offload")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Haimin Zhang <tcs.kernel@gmail.com>
Link: https://lore.kernel.org/r/20211215111530.72103-1-tcs.kernel@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Unfortunately, with the blamed commit I also added a side effect in the
ethtool stats shown. Because I added two more fields in the per channel
structure without verifying if its size is used in any way, part of the
ethtool statistics were off by 2.
Fix this by not looking up the size of the structure but instead on a
fixed value kept in a macro.
Fixes: fc398bec0387 ("net: dpaa2: add adaptive interrupt coalescing")
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/20211215105831.290070-1-ioana.ciornei@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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ssh://git.freedesktop.org/git/drm/drm-intel into drm-fixes
Fix a bound check in the DMC fw load.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YbnGvnsX/H3rKAqO@intel.com
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