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Sandisk SN530 NVMe drives have broken MSIs. On systems without MSI-X
support, all commands time out resulting in the following message:
nvme nvme0: I/O tag 12 (100c) QID 0 timeout, completion polled
These timeouts cause the boot to take an excessively-long time (over 20
minutes) while the initial command queue is flushed.
Address this by adding a quirk for drives with buggy MSIs. The lspci
output for this device (recorded on a system with MSI-X support) is:
02:00.0 Non-Volatile memory controller: Sandisk Corp Device 5008 (rev 01) (prog-if 02 [NVM Express])
Subsystem: Sandisk Corp Device 5008
Flags: bus master, fast devsel, latency 0, IRQ 16, NUMA node 0
Memory at f7e00000 (64-bit, non-prefetchable) [size=16K]
Memory at f7e04000 (64-bit, non-prefetchable) [size=256]
Capabilities: [80] Power Management version 3
Capabilities: [90] MSI: Enable- Count=1/32 Maskable- 64bit+
Capabilities: [b0] MSI-X: Enable+ Count=17 Masked-
Capabilities: [c0] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [150] Device Serial Number 00-00-00-00-00-00-00-00
Capabilities: [1b8] Latency Tolerance Reporting
Capabilities: [300] Secondary PCI Express
Capabilities: [900] L1 PM Substates
Kernel driver in use: nvme
Kernel modules: nvme
Cc: <stable@vger.kernel.org>
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Reviewed-by: Christoph Hellwig <hch@lst.de>
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Fixed: WARNING: Inline literal start-string without end-string in
Documentation/core-api/workqueue.rst
Added "*" in $type_constants2 in kernel-doc script to include "*" in the
conversion to hightlights.
Previously: %WQ_* --> ``WQ_``*
After Changes: %WQ_* --> ``WQ_*``
Need for the fix: ``* is not recognized as a valid end-string for inline
literal.
Link: https://lore.kernel.org/linux-doc/640114d2-5780-48c3-a294-c0eba230f984@gmail.com
Signed-off-by: Utkarsh Tripathi <utripathi2002@gmail.com>
Suggested-by: Akira Yokosawa <akiyks@gmail.com>
Reviewed-by: Akira Yokosawa <akiyks@gmail.com>
Link: https://lore.kernel.org/r/20240503182650.7761-1-utripathi2002@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Signed-off-by: Dennis Lam <dennis.lamerice@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240502212522.4263-1-dennis.lamerice@gmail.com
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Fix spelling mistakes in the documentation.
Signed-off-by: Saurav Shah <sauravshah.31@gmail.com>
Link: https://lore.kernel.org/r/20240501233659.25441-1-sauravshah.31@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Starting BDB version 239, hdr_dpcd_refresh_timeout is introduced to
backlight BDB data. Commit 700034566d68 ("drm/i915/bios: Define more BDB
contents") updated the backlight BDB data accordingly. This broke the
parsing of backlight BDB data in VBT for versions 236 - 238 (both
inclusive) and hence the backlight controls are not responding on units
with the concerned BDB version.
backlight_control information has been present in backlight BDB data
from at least BDB version 191 onwards, if not before. Hence this patch
extracts the backlight_control information for BDB version 191 or newer.
Tested on Chromebooks using Jasperlake SoC (reports bdb->version = 236).
Tested on Chromebooks using Raptorlake SoC (reports bdb->version = 251).
v2: removed checking the block size of the backlight BDB data
[vsyrjala: this is completely safe thanks to commit e163cfb4c96d
("drm/i915/bios: Make copies of VBT data blocks")]
Fixes: 700034566d68 ("drm/i915/bios: Define more BDB contents")
Cc: stable@vger.kernel.org
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240221180622.v2.1.I0690aa3e96a83a43b3fc33f50395d334b2981826@changeid
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
(cherry picked from commit c286f6a973c66c0d993ecab9f7162c790e7064c8)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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This reverts commit 3f9f231236ce7e48780d8a4f1f8cb9fae2df1e4e.
Using 64bit for 'sync_io' is unnecessary from the gendisk side. This
overflow will not cause any functional impact, except for a UBSAN
warning. Solving this overflow requires introducing additional
calculations and checks which are not necessary. So just keep using
32bit for 'sync_io'.
Signed-off-by: Li Nan <linan122@huawei.com>
Link: https://lore.kernel.org/r/20240507023103.781816-1-linan666@huaweicloud.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Discards can access a significant capacity and take longer than the user
expected. A user may change their mind about wanting to run that command
and attempt to kill the process and do something else with their device.
But since the task is uninterruptable, they have to wait for it to
finish, which could be many hours.
Open code blkdev_issue_discard in the BLKDISCARD ioctl handler and check
for a fatal signal at each iteration so the user doesn't have to wait
for their regretted operation to complete naturally.
Heavily based on an earlier patch from Keith Busch.
Reported-by: Conrad Meyer <conradmeyer@meta.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240506042027.2289826-7-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Add a helper to wait for an entire chain of bios to complete.
[hch: split from a larger patch, moved and changed the name now that it
is non-static]
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240506042027.2289826-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Factor out a helper from __blkdev_issue_discard that chews off as much as
possible from a discard range and allocates a bio for it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240506042027.2289826-5-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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This is basically blk_next_bio just with the bio allocation moved
to the caller to allow for more flexible bio handling in the caller.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240506042027.2289826-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Most bio operations get basic sanity checking in submit_bio and anything
more complicated than that is done in the callers. Discards are a bit
different from that in that a lot of checking is done in
__blkdev_issue_discard, and the specific errnos for that are returned
to userspace. Move the checks that require specific errnos to the ioctl
handler instead, and just leave the basic sanity checking in submit_bio
for the other handlers. This introduces two changes in behavior:
1) the logical block size alignment check of the start and len is lost
for non-ioctl callers.
This matches what is done for other operations including reads and
writes. We should probably verify this for all bios, but for now
make discards match the normal flow.
2) for non-ioctl callers all errors are reported on I/O completion now
instead of synchronously. Callers in general mostly ignore or log
errors so this will actually simplify the code once cleaned up
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240506042027.2289826-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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We now set a default granularity in the queue limits API, so don't
bother with this extra check.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240506042027.2289826-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Running syzkaller with the newly reintroduced signed integer overflow
sanitizer shows this report:
[ 62.982337] ------------[ cut here ]------------
[ 62.985692] cgroup: Invalid name
[ 62.986211] UBSAN: signed-integer-overflow in ../block/ioctl.c:36:46
[ 62.989370] 9pnet_fd: p9_fd_create_tcp (7343): problem connecting socket to 127.0.0.1
[ 62.992992] 9223372036854775807 + 4095 cannot be represented in type 'long long'
[ 62.997827] 9pnet_fd: p9_fd_create_tcp (7345): problem connecting socket to 127.0.0.1
[ 62.999369] random: crng reseeded on system resumption
[ 63.000634] GUP no longer grows the stack in syz-executor.2 (7353): 20002000-20003000 (20001000)
[ 63.000668] CPU: 0 PID: 7353 Comm: syz-executor.2 Not tainted 6.8.0-rc2-00035-gb3ef86b5a957 #1
[ 63.000677] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 63.000682] Call Trace:
[ 63.000686] <TASK>
[ 63.000731] dump_stack_lvl+0x93/0xd0
[ 63.000919] __get_user_pages+0x903/0xd30
[ 63.001030] __gup_longterm_locked+0x153e/0x1ba0
[ 63.001041] ? _raw_read_unlock_irqrestore+0x17/0x50
[ 63.001072] ? try_get_folio+0x29c/0x2d0
[ 63.001083] internal_get_user_pages_fast+0x1119/0x1530
[ 63.001109] iov_iter_extract_pages+0x23b/0x580
[ 63.001206] bio_iov_iter_get_pages+0x4de/0x1220
[ 63.001235] iomap_dio_bio_iter+0x9b6/0x1410
[ 63.001297] __iomap_dio_rw+0xab4/0x1810
[ 63.001316] iomap_dio_rw+0x45/0xa0
[ 63.001328] ext4_file_write_iter+0xdde/0x1390
[ 63.001372] vfs_write+0x599/0xbd0
[ 63.001394] ksys_write+0xc8/0x190
[ 63.001403] do_syscall_64+0xd4/0x1b0
[ 63.001421] ? arch_exit_to_user_mode_prepare+0x3a/0x60
[ 63.001479] entry_SYSCALL_64_after_hwframe+0x6f/0x77
[ 63.001535] RIP: 0033:0x7f7fd3ebf539
[ 63.001551] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 14 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
[ 63.001562] RSP: 002b:00007f7fd32570c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 63.001584] RAX: ffffffffffffffda RBX: 00007f7fd3ff3f80 RCX: 00007f7fd3ebf539
[ 63.001590] RDX: 4db6d1e4f7e43360 RSI: 0000000020000000 RDI: 0000000000000004
[ 63.001595] RBP: 00007f7fd3f1e496 R08: 0000000000000000 R09: 0000000000000000
[ 63.001599] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 63.001604] R13: 0000000000000006 R14: 00007f7fd3ff3f80 R15: 00007ffd415ad2b8
...
[ 63.018142] ---[ end trace ]---
Historically, the signed integer overflow sanitizer did not work in the
kernel due to its interaction with `-fwrapv` but this has since been
changed [1] in the newest version of Clang; It was re-enabled in the
kernel with Commit 557f8c582a9ba8ab ("ubsan: Reintroduce signed overflow
sanitizer").
Let's rework this overflow checking logic to not actually perform an
overflow during the check itself, thus avoiding the UBSAN splat.
[1]: https://github.com/llvm/llvm-project/pull/82432
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240507-b4-sio-block-ioctl-v3-1-ba0c2b32275e@google.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux into soc/drivers
RISC-V SoC Kconfig Updates for v6.10
A few different bits of SoC-related Kconfig work. The first part of
this is shared with the DT updates - the modification of all SOC_CANAAN
users to SOC_CANAAN_K210 to split the existing m-mode nommu k210 away
from the k230 that is able to be used in a "common" kernel.
The other thing here is the removal of most of the SOC_VENDOR options,
with their ARCH_VENDOR equivalents that've been waiting in the wings for
1 year+ now made visible. Due a lapse on my part when originally adding
the ARCH_VENDOR stuff, the Microchip transition isn't complete - the
_POLARFIRE was a mistake to keep as there's gonna be non-PolarFire
RISC-V stuff from Microchip soonTM.
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
* tag 'riscv-config-for-v6.10' of https://git.kernel.org/pub/scm/linux/kernel/git/conor/linux:
riscv: config: enable ARCH_CANAAN in defconfig
RISC-V: drop SOC_VIRT for ARCH_VIRT
RISC-V: drop SOC_SIFIVE for ARCH_SIFIVE
RISC-V: drop SOC_MICROCHIP_POLARFIRE for ARCH_MICROCHIP
RISC-V: Drop unused SOC_CANAAN
reset: k210: Deprecate SOC_CANAAN and use SOC_CANAAN_K210
pinctrl: k210: Deprecate SOC_CANAAN and use SOC_CANAAN_K210
clk: k210: Deprecate SOC_CANAAN and use SOC_CANAAN_K210
soc: canaan: Deprecate SOC_CANAAN and use SOC_CANAAN_K210 for K210
riscv: Kconfig.socs: Split ARCH_CANAAN and SOC_CANAAN_K210
Link: https://lore.kernel.org/r/20240503-mardi-underling-3d81a9f97329@spud
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux into soc/defconfig
Amlogic defconfig changes for v6.10:
- Enable Khadas TS050 driver as module
* tag 'amlogic-defconfig-for-v6.10' of https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux:
arm64: defconfig: enable Khadas TS050 panel as module
Link: https://lore.kernel.org/r/13bf8bc4-1cb7-4b94-8c98-9d1cdae5e1f8@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into soc/arm
mvebu arm for 6.10 (part 1)
Decrease the usage of global GPIO numbers for LEDs for Orion5x boards
* tag 'mvebu-arm-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu:
ARM: orion5x: Convert TS409 board to GPIO descriptors for LEDs
ARM: orion5x: Convert Net2big board to GPIO descriptors for LEDs
ARM: orion5x: Convert MV2120 board to GPIO descriptors for LEDs
ARM: orion5x: Convert DNS323 board to GPIO descriptors for LEDs
ARM: orion5x: Convert D2Net board to GPIO descriptors for LEDs
Link: https://lore.kernel.org/r/87h6fcndxj.fsf@BLaptop.bootlin.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux into soc/dt
Samsung DTS ARM64 changes for v6.10, part two
Few changes exclusively for Google GS101:
1. Add HSI0 and HSI2 clock controllers (CMUs).
2. Add USB 3.1 Dual Role Device (DRD) support.
3. Add UFS (Universal Flash Storage) support.
4. Document bus clocks in pin controllers necessary for accessing
registers.
* tag 'samsung-dt64-6.10-2' of https://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux:
arm64: dts: exynos: gs101: specify empty clocks for remaining pinctrl
arm64: dts: exynos: gs101: specify bus clock for pinctrl_hsi2
arm64: dts: exynos: gs101: specify bus clock for pinctrl_peric[01]
arm64: dts: exynos: gs101: specify bus clock for pinctrl (far) alive
arm64: dts: exynos: gs101: enable ufs, phy on oriole & define ufs regulator
arm64: dts: exynos: gs101: Add ufs and ufs-phy dt nodes
arm64: dts: exynos: gs101: Add the hsi2 sysreg node
dt-bindings: soc: google: exynos-sysreg: add dedicated hsi2 sysreg compatible
arm64: dts: exynos: gs101-oriole: enable USB on this board
arm64: dts: exynos: gs101: add USB & USB-phy nodes
arm64: dts: exynos: gs101: enable cmu-hsi2 clock controller
arm64: dts: exynos: gs101: enable cmu-hsi0 clock controller
dt-bindings: clock: google,gs101-clock: add HSI2 clock management unit
dt-bindings: clock: google,gs101-clock: add HSI0 clock management unit
Link: https://lore.kernel.org/r/20240504121233.7589-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into soc/dt
Radxa Rock 3C board. More gpu+usb enablement on rk3588 boards as well
as two new iommus on rk3588.
* tag 'v6.10-rockchip-dts64-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
arm64: dts: rockchip: add rk3588 pcie and php IOMMUs
arm64: dts: rockchip: enable onboard spi flash for rock-3a
arm64: dts: rockchip: add USB-C support to rk3588s-orangepi-5
arm64: dts: rockchip: Enable GPU on Orange Pi 5
arm64: dts: rockchip: enable GPU on khadas-edge2
arm64: dts: rockchip: Add USB3 on Edgeble NCM6A-IO board
arm64: dts: rockchip: Support poweroff on Edgeble Neural Compute Module
arm64: dts: rockchip: Add Radxa ROCK 3C
dt-bindings: arm: rockchip: add Radxa ROCK 3C
Link: https://lore.kernel.org/r/13810480.dW097sEU6C@diego
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu into soc/dt
mvebu dt64 for 6.10 (part 1)
Few dts fix for dt validation
* tag 'mvebu-dt64-6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/gclement/mvebu:
arm64: dts: marvell: espressobin-ultra: fix Ethernet Switch unit address
arm64: dts: marvell: turris-mox: drop unneeded flash address/size-cells
arm64: dts: marvell: eDPU: drop redundant address/size-cells
arm64: dts: marvell: cn9130-crb: drop unneeded "status"
arm64: dts: marvell: cn9130-crb: drop wrong unit-addresses
arm64: dts: marvell: cn9130-db: drop wrong unit-addresses
arm64: dts: marvell: cn9131-db: drop unneeded flash address/size-cells
arm64: dts: marvell: cn9130-db: drop unneeded flash address/size-cells
arm64: dts: marvell: ap80x: fix IOMMU unit address
Link: https://lore.kernel.org/r/87jzk8ndyy.fsf@BLaptop.bootlin.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes
One more Qualcomm Arm64 DeviceTree fix for v6.9
On ths SA8155P automotive platform, the wrong gpio controller is defined
for the SD-card detect pin, which depending on probe ordering of things
cause ethernet to be broken. The card detect pin reference is corrected
to solve this problem.
* tag 'qcom-arm64-fixes-for-6.9-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
arm64: dts: qcom: sa8155p-adp: fix SDHC2 CD pin configuration
Link: https://lore.kernel.org/r/20240427153817.1430382-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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For devices with virt_boundary limit, the driver may provide zero max
segment size, we have to set it as UINT_MAX at default. Otherwise, it
may cause warning in driver when handling sglist.
Fix it by setting default max segment size as UINT_MAX.
Cc: Christoph Hellwig <hch@lst.de>
Cc: Mike Snitzer <snitzer@kernel.org>
Fixes: b561ea56a264 ("block: allow device to have both virt_boundary_mask and max segment size")
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reported-by: Geert Uytterhoeven <geert+renesas@glider.be>
Closes: https://lore.kernel.org/linux-block/7e38b67c-9372-a42d-41eb-abdce33d3372@linux-m68k.org/
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20240424134722.2584284-1-ming.lei@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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Attributes for FDB learned entries were added to the if_link netlink api
for bridge linkinfo but are missing from the rt_link.yaml spec. Add the
missing attributes to the spec.
Fixes: ddd1ad68826d ("net: bridge: Add netlink knobs for number / max learned FDB entries")
Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20240503164304.87427-1-donald.hunter@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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fill_route() stores three components in the skb:
- struct rtmsg
- RTA_DST (u8)
- RTA_OIF (u32)
Therefore, rtm_phonet_notify() should use
NLMSG_ALIGN(sizeof(struct rtmsg)) +
nla_total_size(1) +
nla_total_size(4)
Fixes: f062f41d0657 ("Phonet: routing table Netlink interface")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Rémi Denis-Courmont <courmisch@gmail.com>
Link: https://lore.kernel.org/r/20240502161700.1804476-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The four litmus tests in Documentation/litmus-tests/atomic do not
declare all of their local variables. Although this is just fine for LKMM
analysis by herd7, it causes build failures when run in-kernel by klitmus.
This commit therefore adjusts these tests to declare all local variables.
Reported-by: Andrea Parri <parri.andrea@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Acked-by: Andrea Parri <parri.andrea@gmail.com>
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The ORDERING section of Documentation/atomic_t.txt can easily be read as
saying that conditional atomic RMW operations that fail are ordered when
those operations have the _acquire() or _release() suffixes. This is
not the case, therefore update this section to make it clear that failed
conditional atomic RMW operations provide no ordering.
Reported-by: Anna-Maria Behnsen <anna-maria@linutronix.de>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Will Deacon <will@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Jade Alglave <j.alglave@ucl.ac.uk>
Cc: Luc Maranget <luc.maranget@inria.fr>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Akira Yokosawa <akiyks@gmail.com>
Cc: Daniel Lustig <dlustig@nvidia.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-doc@vger.kernel.org>
Acked-by: Andrea Parri <parri.andrea@gmail.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
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This commit adds four litmus tests showing that a failing cmpxchg()
operation is unordered unless followed by an smp_mb__after_atomic()
operation.
Suggested-by: Frederic Weisbecker <frederic@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Will Deacon <will@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Jade Alglave <j.alglave@ucl.ac.uk>
Cc: Luc Maranget <luc.maranget@inria.fr>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Akira Yokosawa <akiyks@gmail.com>
Cc: Daniel Lustig <dlustig@nvidia.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-doc@vger.kernel.org>
Acked-by: Andrea Parri <parri.andrea@gmail.com>
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This commit documents the litmus tests in the "locking" directory.
[ paulmck: Apply formatting feedback from Andrea Parri. ]
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Will Deacon <will@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Jade Alglave <j.alglave@ucl.ac.uk>
Cc: Luc Maranget <luc.maranget@inria.fr>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Akira Yokosawa <akiyks@gmail.com>
Cc: Daniel Lustig <dlustig@nvidia.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-doc@vger.kernel.org>
Acked-by: Andrea Parri <parri.andrea@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"Two more fixes, both have some visible effects on user space:
- add check if quotas are enabled when passing qgroup inheritance
info, this affects snapper that could fail to create a snapshot
- do check for leaf/node flag WRITTEN earlier so that nodes are
completely validated before access, this used to be done by
integrity checker but it's been removed and left an unhandled case"
* tag 'for-6.9-rc7-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: make sure that WRITTEN is set on all metadata blocks
btrfs: qgroup: do not check qgroup inherit if qgroup is disabled
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This reverts commit 07ed11afb68d94eadd4ffc082b97c2331307c5ea.
Stephen Rostedt reports:
"I went to run my tests on my VMs and the tests hung on boot up.
Unfortunately, the most I ever got out was:
[ 93.607888] Testing event system initcall: OK
[ 93.667730] Running tests on all trace events:
[ 93.669757] Testing all events: OK
[ 95.631064] ------------[ cut here ]------------
Timed out after 60 seconds"
and further debugging points to a possible circular locking dependency
between the console_owner locking and the worker pool locking.
Reverting the commit allows Steve's VM to boot to completion again.
[ This may obviously result in the "[TTM] Buffer eviction failed"
messages again, which was the reason for that original revert. But at
this point this seems preferable to a non-booting system... ]
Reported-and-bisected-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://lore.kernel.org/all/20240502081641.457aa25f@gandalf.local.home/
Acked-by: Maxime Ripard <mripard@kernel.org>
Cc: Alex Constantino <dreaming.about.electric.sheep@gmail.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Timo Lindfors <timo.lindfors@iki.fi>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There's a typo that makes parent device uses child LNKCTL value and vice
versa. This causes Micron NVMe to trigger a reboot upon system resume.
Correct the typo to fix the issue.
Fixes: 64dbb2d70744 ("PCI/ASPM: Disable L1 before configuring L1 Substates")
Link: https://lore.kernel.org/r/20240506051602.1990743-1-kai.heng.feng@canonical.com
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
[bhelgaas: update subject]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
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Intel hardware is capable of programming the Maud/Naud SDPs on its
own based on real-time clocks. While doing so, it takes care
of any deviations from the theoretical values. Programming the registers
explicitly with static values can interfere with this logic. Therefore,
let the HW decide the Maud and Naud SDPs on it's own.
Cc: stable@vger.kernel.org # v5.17
Closes: https://gitlab.freedesktop.org/drm/intel/-/issues/8097
Co-developed-by: Kai Vehmanen <kai.vehmanen@intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@intel.com>
Signed-off-by: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Animesh Manna <animesh.manna@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240430091825.733499-1-chaitanya.kumar.borah@intel.com
(cherry picked from commit 8e056b50d92ae7f4d6895d1c97a69a2a953cf97b)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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We missed setting the CCS mode during resume and engine resets.
Create a workaround to be added in the engine's workaround list.
This workaround sets the XEHP_CCS_MODE value at every reset.
The issue can be reproduced by running:
$ clpeak --kernel-latency
Without resetting the CCS mode, we encounter a fence timeout:
Fence expiration time out i915-0000:03:00.0:clpeak[2387]:2!
Fixes: 6db31251bb26 ("drm/i915/gt: Enable only one CCS for compute workload")
Reported-by: Gnattu OC <gnattuoc@me.com>
Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/10895
Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com>
Cc: Chris Wilson <chris.p.wilson@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Matt Roper <matthew.d.roper@intel.com>
Cc: <stable@vger.kernel.org> # v6.2+
Tested-by: Gnattu OC <gnattuoc@me.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Tested-by: Krzysztof Gibala <krzysztof.gibala@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240426000723.229296-1-andi.shyti@linux.intel.com
(cherry picked from commit 4cfca03f76413db115c3cc18f4370debb1b81b2b)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab fixes from Vlastimil Babka:
- Fix for cleanup infrastructure (Dan Carpenter)
This makes the __free(kfree) cleanup hooks not crash on error
pointers.
- SLUB fix for freepointer checking (Nicolas Bouchinet)
This fixes a recently introduced bug that manifests when
init_on_free, CONFIG_SLAB_FREELIST_HARDENED and consistency checks
(slub_debug=F) are all enabled, and results in false-positive
freepointer corrupt reports for caches that store freepointer outside
of the object area.
* tag 'slab-for-6.9-rc7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab:
mm/slab: make __free(kfree) accept error pointers
mm/slub: avoid zeroing outside-object freepointer for single free
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git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay
Pull auxdisplay fixes from Andy Shevchenko:
- A couple of non-critical build fixes to Character LCD library
- Miscellaneous fixes here and there
* tag 'auxdisplay-v6.10-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay:
auxdisplay: charlcd: Don't rebuild when CONFIG_PANEL_BOOT_MESSAGE=y
auxdisplay: charlcd: Add missing MODULE_DESCRIPTION()
auxdisplay: seg-led-gpio: Convert to platform remove callback returning void
auxdisplay: linedisp: Group display drivers together
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Define a constant for the max superblock size, to avoid a too-large
shift.
Reported-by: syzbot+a8b0fb419355c91dda7f@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bch2_fs_quota_read_inode() wasn't entirely updated to the
bch2_snapshot_tree() helper, which takes rcu lock.
Reported-by: syzbot+a3a9a61224ed3b7f0010@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Ancient versions of bcachefs produced packed formats that could
represent keys that our in memory format cannot represent;
bformat_needs_redo() has some tricky shifts to check for this sort of
overflow.
Reported-by: syzbot+594427aebfefeebe91c6@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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For forwards compatibility we have to allow unknown key types, and only
run the checks that make sense against them.
Fix a missing guard on k.k->type being known.
Reported-by: syzbot+ae4dc916da3ce51f284f@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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We were forgetting to check for jset entries that overrun the end of the
section - both in validate and to_text(); to_text() needs to be safe for
types that fail to validate.
Reported-by: syzbot+c48865e11e7e893ec4ab@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Reported-by: syzbot+10827fa6b176e1acf1d0@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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filefrag (and potentially other utilities that call fiemap) sometimes
pass ULONG_MAX as the length. fiemap_prep clamps excessively large
lengths - but the calculation of end can overflow if it occurs before
calling fiemap_prep. When this happens, filefrag assumes it has read to
the end and exits.
Signed-off-by: Reed Riley <reed@riley.engineer>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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The bucket_gens array is a single array allocation (one byte per
bucket), and kernel allocations are still limited to INT_MAX.
Check this limit to avoid failing the bucket_gens array allocation.
Reported-by: syzbot+b29f436493184ea42e2b@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bch2_get_next_dev() and bch2_get_next_online_dev() iterate over devices,
dropping and taking refs as they go; we can't access the previous device
(for ca->dev_idx) after we've dropped our ref to it, unless we take
rcu_read_lock() first.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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bch2_dev_lookup() is supposed to take a ref on the device it returns, but
for_each_member_device() takes refs as it iterates,
for_each_member_device_rcu() does not.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Normally this is initialized in __bch2_write(), which is executed in a
loop, but the inline data path skips this.
Reported-by: syzbot+fd3ccb331eb21f05d13b@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Reported-by: syzbot+66b9b74f6520068596a9@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Reported-by: syzbot+a35cdb62ec34d44fb062@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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We don't want the assert when we're checking if the backpointer is
valid.
Reported-by: syzbot+bf7215c0525098e7747a@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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