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Use "its" for possessive form instead of "it's".
Hyphenate multi-word adjectives.
Correct some spelling.
End one line of code with ';' instead of ','. The before and after
object files are identical.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231213044014.21410-1-rdunlap@infradead.org
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ATS-M device ID update.
BSpec: 44477
Signed-off-by: Haridhar Kalvala <haridhar.kalvala@intel.com>
Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231120113731.1570589-1-haridhar.kalvala@intel.com
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git://anongit.freedesktop.org/drm/drm into drm-next
vmemdup-user-array API and changes with it.
This is just a process PR to merge the topic branch into drm-next, this contains some core kernel and drm changes.
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231024010905.646830-1-airlied@redhat.com
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Currently, user array duplications are sometimes done without an
overflow check. Sometimes the checks are done manually; sometimes the
array size is calculated with array_size() and sometimes by calculating
n * size directly in code.
Introduce wrappers for arrays for memdup_user() and vmemdup_user() to
provide a standardized and safe way for duplicating user arrays.
This is both for new code as well as replacing usage of (v)memdup_user()
in existing code that uses, e.g., n * size to calculate array sizes.
Suggested-by: David Airlie <airlied@redhat.com>
Signed-off-by: Philipp Stanner <pstanner@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Zack Rusin <zackr@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230920123612.16914-3-pstanner@redhat.com
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This is needed to add the msm pr which is based on a higher base.
Signed-off-by: Dave Airlie <airlied@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf events fix from Ingo Molnar:
"Fix group event semantics"
* tag 'perf-urgent-2023-10-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Disallow mis-matched inherited group reads
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Because group consistency is non-atomic between parent (filedesc) and children
(inherited) events, it is possible for PERF_FORMAT_GROUP read() to try and sum
non-matching counter groups -- with non-sensical results.
Add group_generation to distinguish the case where a parent group removes and
adds an event and thus has the same number, but a different configuration of
events as inherited groups.
This became a problem when commit fa8c269353d5 ("perf/core: Invert
perf_read_group() loops") flipped the order of child_list and sibling_list.
Previously it would iterate the group (sibling_list) first, and for each
sibling traverse the child_list. In this order, only the group composition of
the parent is relevant. By flipping the order the group composition of the
child (inherited) events becomes an issue and the mis-match in group
composition becomes evident.
That said; even prior to this commit, while reading of a group that is not
equally inherited was not broken, it still made no sense.
(Ab)use ECHILD as error return to indicate issues with child process group
composition.
Fixes: fa8c269353d5 ("perf/core: Invert perf_read_group() loops")
Reported-by: Budimir Markovic <markovicbudimir@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20231018115654.GK33217@noisy.programming.kicks-ass.net
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git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux
Pull MTD fixes from Miquel Raynal:
"In the raw NAND subsystem, the major fix prevents using cached reads
with devices not supporting it. There was two bug reports about this.
Apart from that, three drivers (pl353, arasan and marvell) could
sometimes hide page program failures due to their their own program
page helper not being fully compliant with the specification (many
drivers use the default helpers shared by the core). Adding a missing
check prevents these situation.
Finally, the Qualcomm driver had a broken error path.
In the SPI-NAND subsystem one Micron device used a wrong bitmak
reporting possibly corrupted ECC status.
Finally, the physmap-core got stripped from its map_rom fallback by
mistake, this feature is added back"
* tag 'mtd/fixes-for-6.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
mtd: rawnand: Ensure the nand chip supports cached reads
mtd: rawnand: qcom: Unmap the right resource upon probe failure
mtd: rawnand: pl353: Ensure program page operations are successful
mtd: rawnand: arasan: Ensure program page operations are successful
mtd: spinand: micron: correct bitmask for ecc status
mtd: physmap-core: Restore map_rom fallback
mtd: rawnand: marvell: Ensure program page operations are successful
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Both the JEDEC and ONFI specification say that read cache sequential
support is an optional command. This means that we not only need to
check whether the individual controller supports the command, we also
need to check the parameter pages for both ONFI and JEDEC NAND flashes
before enabling sequential cache reads.
This fixes support for NAND flashes which don't support enabling cache
reads, i.e. Samsung K9F4G08U0F or Toshiba TC58NVG0S3HTA00.
Sequential cache reads are now only available for ONFI and JEDEC
devices, if individual vendors implement this, it needs to be enabled
per vendor.
Tested on i.MX6Q with a Samsung NAND flash chip that doesn't support
sequential reads.
Fixes: 003fe4b9545b ("mtd: rawnand: Support for sequential cache reads")
Cc: stable@vger.kernel.org
Signed-off-by: Rouven Czerwinski <r.czerwinski@pengutronix.de>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20230922141717.35977-1-r.czerwinski@pengutronix.de
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Still higher volume than wished, but all are driver-specific small
fixes and look safe for this late RC.
The majority of changes are for ASoC, especially for wcd938x driver
and Cirrus codec drivers, while there are other random fixes including
usual HD-audio quirks"
* tag 'sound-6.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (22 commits)
ASoC: da7219: Correct the process of setting up Gnd switch in AAD
ALSA: hda/realtek - Fixed ASUS platform headset Mic issue
ALSA: hda/realtek: Add quirk for ASUS ROG GU603ZV
ALSA: hda/relatek: Enable Mute LED on HP Laptop 15s-fq5xxx
ASoC: dwc: Fix non-DT instantiation
ASoC: codecs: tas2780: Fix log of failed reset via I2C.
ASoC: rt5650: fix the wrong result of key button
ASoC: cs42l42: Fix missing include of gpio/consumer.h
ASoC: cs42l43: Update values for bias sense
ASoC: dt-bindings: cirrus,cs42l43: Update values for bias sense
ASoC: cs35l56: ASP1 DOUT must default to Hi-Z when not transmitting
ASoC: pxa: fix a memory leak in probe()
ASoC: cs35l56: Fix illegal use of init_completion()
ASoC: codecs: wcd938x-sdw: fix runtime PM imbalance on probe errors
ASoC: codecs: wcd938x-sdw: fix use after free on driver unbind
ASoC: codecs: wcd938x: fix runtime PM imbalance on remove
ASoC: codecs: wcd938x: fix regulator leaks on probe errors
ASoC: codecs: wcd938x: fix resource leaks on bind errors
ASoC: codecs: wcd938x: fix unbind tear down order
ASoC: codecs: wcd938x: drop bogus bind error handling
...
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Some drivers use one event callback for multiple widgets but still need
to perform a bit different actions based on actual widget. This is done
by comparing widget name, however drivers tend to miss possible name
prefix. Add a helper to solve common mistakes.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20231003155710.821315-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
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Pull drm fixes from Dave Airlie:
"Regular fixes for the week, amdgpu, i915, nouveau, with some other
scattered around, nothing major.
amdgpu:
- Fix possible NULL pointer dereference
- Avoid possible BUG_ON in GPUVM updates
- Disable AMD_CTX_PRIORITY_UNSET
i915:
- Fix display issue that was blocking S0ix
- Retry gtt fault when out of fence registers
bridge:
- ti-sn65dsi86: Fix device lifetime
edid:
- Add quirk for BenQ GW2765
ivpu:
- Extend address range for MMU mmap
nouveau:
- DP-connector fixes
- Documentation fixes
panel:
- Move AUX B116XW03 into panel-simple
scheduler:
- Eliminate DRM_SCHED_PRIORITY_UNSET
ttm:
- Fix possible NULL-ptr deref in cleanup
mediatek:
- Correctly free sg_table in gem prime vmap"
* tag 'drm-fixes-2023-10-20' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu: Reserve fences for VM update
drm/amdgpu: Fix possible null pointer dereference
accel/ivpu: Extend address range for MMU mmap
Revert "accel/ivpu: Use cached buffers for FW loading"
accel/ivpu: Don't enter d0i3 during FLR
drm/i915: Retry gtt fault when out of fence registers
drm/i915/cx0: Only clear/set the Pipe Reset bit of the PHY Lanes Owned
gpu/drm: Eliminate DRM_SCHED_PRIORITY_UNSET
drm/amdgpu: Unset context priority is now invalid
drm/mediatek: Correctly free sg_table in gem prime vmap
drm/edid: add 8 bpc quirk to the BenQ GW2765
drm/ttm: Reorder sys manager cleanup step
drm/nouveau/disp: fix DP capable DSM connectors
drm/nouveau: exec: fix ioctl kernel-doc warning
drm/panel: Move AUX B116XW03 out of panel-edp back to panel-simple
drm/bridge: ti-sn65dsi86: Associate DSI device lifetime with auxiliary device
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git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Short summary of fixes pull:
amdgpu:
- Disable AMD_CTX_PRIORITY_UNSET
bridge:
- ti-sn65dsi86: Fix device lifetime
edid:
- Add quirk for BenQ GW2765
ivpu:
- Extend address range for MMU mmap
nouveau:
- DP-connector fixes
- Documentation fixes
panel:
- Move AUX B116XW03 into panel-simple
scheduler:
- Eliminate DRM_SCHED_PRIORITY_UNSET
ttm:
- Fix possible NULL-ptr deref in cleanup
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20231019114605.GA22540@linux-uq9g
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Eliminate DRM_SCHED_PRIORITY_UNSET, value of -2, whose only user was
amdgpu. Furthermore, eliminate an index bug, in that when amdgpu boots, it
calls drm_sched_entity_init() with DRM_SCHED_PRIORITY_UNSET, which uses it to
index sched->sched_rq[].
Cc: Alex Deucher <Alexander.Deucher@amd.com>
Cc: Christian König <christian.koenig@amd.com>
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Acked-by: Alex Deucher <Alexander.Deucher@amd.com>
Link: https://lore.kernel.org/r/20231017035656.8211-2-luben.tuikov@amd.com
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kernel-doc emits a warning:
include/uapi/drm/nouveau_drm.h:49: warning: Cannot understand * @NOUVEAU_GETPARAM_EXEC_PUSH_MAX
on line 49 - I thought it was a doc line
We don't have a way to document a macro value via kernel-doc, so
change the "/**" kernel-doc marker to a C comment and format the comment
more like a kernel-doc comment for consistency.
Fixes: d59e75eef52d ("drm/nouveau: exec: report max pushs through getparam")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Danilo Krummrich <dakr@redhat.com>
Cc: Karol Herbst <kherbst@redhat.com>
Cc: Lyude Paul <lyude@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Cc: Bragatheswaran Manickavel <bragathemanick0908@gmail.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231008140231.17921-1-rdunlap@infradead.org
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Including fixes from bluetooth, netfilter, WiFi.
Feels like an up-tick in regression fixes, mostly for older releases.
The hfsc fix, tcp_disconnect() and Intel WWAN fixes stand out as
fairly clear-cut user reported regressions. The mlx5 DMA bug was
causing strife for 390x folks. The fixes themselves are not
particularly scary, tho. No open investigations / outstanding reports
at the time of writing.
Current release - regressions:
- eth: mlx5: perform DMA operations in the right locations, make
devices usable on s390x, again
- sched: sch_hfsc: upgrade 'rt' to 'sc' when it becomes a inner
curve, previous fix of rejecting invalid config broke some scripts
- rfkill: reduce data->mtx scope in rfkill_fop_open, avoid deadlock
- revert "ethtool: Fix mod state of verbose no_mask bitset", needs
more work
Current release - new code bugs:
- tcp: fix listen() warning with v4-mapped-v6 address
Previous releases - regressions:
- tcp: allow tcp_disconnect() again when threads are waiting, it was
denied to plug a constant source of bugs but turns out .NET depends
on it
- eth: mlx5: fix double-free if buffer refill fails under OOM
- revert "net: wwan: iosm: enable runtime pm support for 7560", it's
causing regressions and the WWAN team at Intel disappeared
- tcp: tsq: relax tcp_small_queue_check() when rtx queue contains a
single skb, fix single-stream perf regression on some devices
Previous releases - always broken:
- Bluetooth:
- fix issues in legacy BR/EDR PIN code pairing
- correctly bounds check and pad HCI_MON_NEW_INDEX name
- netfilter:
- more fixes / follow ups for the large "commit protocol" rework,
which went in as a fix to 6.5
- fix null-derefs on netlink attrs which user may not pass in
- tcp: fix excessive TLP and RACK timeouts from HZ rounding (bless
Debian for keeping HZ=250 alive)
- net: more strict VIRTIO_NET_HDR_GSO_UDP_L4 validation, prevent
letting frankenstein UDP super-frames from getting into the stack
- net: fix interface altnames when ifc moves to a new namespace
- eth: qed: fix the size of the RX buffers
- mptcp: avoid sending RST when closing the initial subflow"
* tag 'net-6.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (94 commits)
Revert "ethtool: Fix mod state of verbose no_mask bitset"
selftests: mptcp: join: no RST when rm subflow/addr
mptcp: avoid sending RST when closing the initial subflow
mptcp: more conservative check for zero probes
tcp: check mptcp-level constraints for backlog coalescing
selftests: mptcp: join: correctly check for no RST
net: ti: icssg-prueth: Fix r30 CMDs bitmasks
selftests: net: add very basic test for netdev names and namespaces
net: move altnames together with the netdevice
net: avoid UAF on deleted altname
net: check for altname conflicts when changing netdev's netns
net: fix ifname in netlink ntf during netns move
net: ethernet: ti: Fix mixed module-builtin object
net: phy: bcm7xxx: Add missing 16nm EPHY statistics
ipv4: fib: annotate races around nh->nh_saddr_genid and nh->nh_saddr
tcp_bpf: properly release resources on error paths
net/sched: sch_hfsc: upgrade 'rt' to 'sc' when it becomes a inner curve
net: mdio-mux: fix C45 access returning -EIO after API change
tcp: tsq: relax tcp_small_queue_check() when rtx queue contains a single skb
octeon_ep: update BQL sent bytes before ringing doorbell
...
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When CONFIG_IPV6=n, and building with W=1:
In file included from include/trace/define_trace.h:102,
from include/trace/events/neigh.h:255,
from net/core/net-traces.c:51:
include/trace/events/neigh.h: In function ‘trace_event_raw_event_neigh_create’:
include/trace/events/neigh.h:42:34: error: variable ‘pin6’ set but not used [-Werror=unused-but-set-variable]
42 | struct in6_addr *pin6;
| ^~~~
include/trace/trace_events.h:402:11: note: in definition of macro ‘DECLARE_EVENT_CLASS’
402 | { assign; } \
| ^~~~~~
include/trace/trace_events.h:44:30: note: in expansion of macro ‘PARAMS’
44 | PARAMS(assign), \
| ^~~~~~
include/trace/events/neigh.h:23:1: note: in expansion of macro ‘TRACE_EVENT’
23 | TRACE_EVENT(neigh_create,
| ^~~~~~~~~~~
include/trace/events/neigh.h:41:9: note: in expansion of macro ‘TP_fast_assign’
41 | TP_fast_assign(
| ^~~~~~~~~~~~~~
In file included from include/trace/define_trace.h:103,
from include/trace/events/neigh.h:255,
from net/core/net-traces.c:51:
include/trace/events/neigh.h: In function ‘perf_trace_neigh_create’:
include/trace/events/neigh.h:42:34: error: variable ‘pin6’ set but not used [-Werror=unused-but-set-variable]
42 | struct in6_addr *pin6;
| ^~~~
include/trace/perf.h:51:11: note: in definition of macro ‘DECLARE_EVENT_CLASS’
51 | { assign; } \
| ^~~~~~
include/trace/trace_events.h:44:30: note: in expansion of macro ‘PARAMS’
44 | PARAMS(assign), \
| ^~~~~~
include/trace/events/neigh.h:23:1: note: in expansion of macro ‘TRACE_EVENT’
23 | TRACE_EVENT(neigh_create,
| ^~~~~~~~~~~
include/trace/events/neigh.h:41:9: note: in expansion of macro ‘TP_fast_assign’
41 | TP_fast_assign(
| ^~~~~~~~~~~~~~
Indeed, the variable pin6 is declared and initialized unconditionally,
while it is only used and needlessly re-initialized when support for
IPv6 is enabled.
Fix this by dropping the unused variable initialization, and moving the
variable declaration inside the existing section protected by a check
for CONFIG_IPV6.
Fixes: fc651001d2c5ca4f ("neighbor: Add tracepoint to __neigh_create")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Simon Horman <horms@kernel.org> # build-tested
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec
Steffen Klassert says:
====================
pull request (net): ipsec 2023-10-17
1) Fix a slab-use-after-free in xfrm_policy_inexact_list_reinsert.
From Dong Chenchen.
2) Fix data-races in the xfrm interfaces dev->stats fields.
From Eric Dumazet.
3) Fix a data-race in xfrm_gen_index.
From Eric Dumazet.
4) Fix an inet6_dev refcount underflow.
From Zhang Changzhong.
5) Check the return value of pskb_trim in esp_remove_trailer
for esp4 and esp6. From Ma Ke.
6) Fix a data-race in xfrm_lookup_with_ifid.
From Eric Dumazet.
* tag 'ipsec-2023-10-17' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec:
xfrm: fix a data-race in xfrm_lookup_with_ifid()
net: ipv4: fix return value check in esp_remove_trailer
net: ipv6: fix return value check in esp_remove_trailer
xfrm6: fix inet6_dev refcount underflow problem
xfrm: fix a data-race in xfrm_gen_index()
xfrm: interface: use DEV_STATS_INC()
net: xfrm: skip policies marked as dead while reinserting policies
====================
Link: https://lore.kernel.org/r/20231017083723.1364940-1-steffen.klassert@secunet.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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xfrm_gen_index() mutual exclusion uses net->xfrm.xfrm_policy_lock.
This means we must use a per-netns idx_generator variable,
instead of a static one.
Alternative would be to use an atomic variable.
syzbot reported:
BUG: KCSAN: data-race in xfrm_sk_policy_insert / xfrm_sk_policy_insert
write to 0xffffffff87005938 of 4 bytes by task 29466 on cpu 0:
xfrm_gen_index net/xfrm/xfrm_policy.c:1385 [inline]
xfrm_sk_policy_insert+0x262/0x640 net/xfrm/xfrm_policy.c:2347
xfrm_user_policy+0x413/0x540 net/xfrm/xfrm_state.c:2639
do_ipv6_setsockopt+0x1317/0x2ce0 net/ipv6/ipv6_sockglue.c:943
ipv6_setsockopt+0x57/0x130 net/ipv6/ipv6_sockglue.c:1012
rawv6_setsockopt+0x21e/0x410 net/ipv6/raw.c:1054
sock_common_setsockopt+0x61/0x70 net/core/sock.c:3697
__sys_setsockopt+0x1c9/0x230 net/socket.c:2263
__do_sys_setsockopt net/socket.c:2274 [inline]
__se_sys_setsockopt net/socket.c:2271 [inline]
__x64_sys_setsockopt+0x66/0x80 net/socket.c:2271
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
read to 0xffffffff87005938 of 4 bytes by task 29460 on cpu 1:
xfrm_sk_policy_insert+0x13e/0x640
xfrm_user_policy+0x413/0x540 net/xfrm/xfrm_state.c:2639
do_ipv6_setsockopt+0x1317/0x2ce0 net/ipv6/ipv6_sockglue.c:943
ipv6_setsockopt+0x57/0x130 net/ipv6/ipv6_sockglue.c:1012
rawv6_setsockopt+0x21e/0x410 net/ipv6/raw.c:1054
sock_common_setsockopt+0x61/0x70 net/core/sock.c:3697
__sys_setsockopt+0x1c9/0x230 net/socket.c:2263
__do_sys_setsockopt net/socket.c:2274 [inline]
__se_sys_setsockopt net/socket.c:2271 [inline]
__x64_sys_setsockopt+0x66/0x80 net/socket.c:2271
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
value changed: 0x00006ad8 -> 0x00006b18
Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 29460 Comm: syz-executor.1 Not tainted 6.5.0-rc5-syzkaller-00243-g9106536c1aa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
Fixes: 1121994c803f ("netns xfrm: policy insertion in netns")
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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We discovered from packet traces of slow loss recovery on kernels with
the default HZ=250 setting (and min_rtt < 1ms) that after reordering,
when receiving a SACKed sequence range, the RACK reordering timer was
firing after about 16ms rather than the desired value of roughly
min_rtt/4 + 2ms. The problem is largely due to the RACK reorder timer
calculation adding in TCP_TIMEOUT_MIN, which is 2 jiffies. On kernels
with HZ=250, this is 2*4ms = 8ms. The TLP timer calculation has the
exact same issue.
This commit fixes the TLP transmit timer and RACK reordering timer
floor calculation to more closely match the intended 2ms floor even on
kernels with HZ=250. It does this by adding in a new
TCP_TIMEOUT_MIN_US floor of 2000 us and then converting to jiffies,
instead of the current approach of converting to jiffies and then
adding th TCP_TIMEOUT_MIN value of 2 jiffies.
Our testing has verified that on kernels with HZ=1000, as expected,
this does not produce significant changes in behavior, but on kernels
with the default HZ=250 the latency improvement can be large. For
example, our tests show that for HZ=250 kernels at low RTTs this fix
roughly halves the latency for the RACK reorder timer: instead of
mostly firing at 16ms it mostly fires at 8ms.
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Fixes: bb4d991a28cc ("tcp: adjust tail loss probe timeout")
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20231015174700.2206872-1-ncardwell.sw@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
Luiz Augusto von Dentz says:
====================
bluetooth pull request for net:
- Fix race when opening vhci device
- Avoid memcmp() out of bounds warning
- Correctly bounds check and pad HCI_MON_NEW_INDEX name
- Fix using memcmp when comparing keys
- Ignore error return for hci_devcd_register() in btrtl
- Always check if connection is alive before deleting
- Fix a refcnt underflow problem for hci_conn
* tag 'for-net-2023-10-13' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth:
Bluetooth: hci_sock: Correctly bounds check and pad HCI_MON_NEW_INDEX name
Bluetooth: avoid memcmp() out of bounds warning
Bluetooth: hci_sock: fix slab oob read in create_monitor_event
Bluetooth: btrtl: Ignore error return for hci_devcd_register()
Bluetooth: hci_event: Fix coding style
Bluetooth: hci_event: Fix using memcmp when comparing keys
Bluetooth: Fix a refcnt underflow problem for hci_conn
Bluetooth: hci_sync: always check if connection is alive before deleting
Bluetooth: Reject connection with the device which has same BD_ADDR
Bluetooth: hci_event: Ignore NULL link key
Bluetooth: ISO: Fix invalid context error
Bluetooth: vhci: Fix race when opening vhci device
====================
Link: https://lore.kernel.org/r/20231014031336.1664558-1-luiz.dentz@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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The code pattern of memcpy(dst, src, strlen(src)) is almost always
wrong. In this case it is wrong because it leaves memory uninitialized
if it is less than sizeof(ni->name), and overflows ni->name when longer.
Normally strtomem_pad() could be used here, but since ni->name is a
trailing array in struct hci_mon_new_index, compilers that don't support
-fstrict-flex-arrays=3 can't tell how large this array is via
__builtin_object_size(). Instead, open-code the helper and use sizeof()
since it will work correctly.
Additionally mark ni->name as __nonstring since it appears to not be a
%NUL terminated C string.
Cc: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Cc: Edward AD <twuufnxlz@gmail.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: linux-bluetooth@vger.kernel.org
Cc: netdev@vger.kernel.org
Fixes: 18f547f3fc07 ("Bluetooth: hci_sock: fix slab oob read in create_monitor_event")
Link: https://lore.kernel.org/lkml/202310110908.F2639D3276@keescook/
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
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Syzbot reported two new paths to hit an internal WARNING using the
new virtio gso type VIRTIO_NET_HDR_GSO_UDP_L4.
RIP: 0010:skb_checksum_help+0x4a2/0x600 net/core/dev.c:3260
skb len=64521 gso_size=344
and
RIP: 0010:skb_warn_bad_offload+0x118/0x240 net/core/dev.c:3262
Older virtio types have historically had loose restrictions, leading
to many entirely impractical fuzzer generated packets causing
problems deep in the kernel stack. Ideally, we would have had strict
validation for all types from the start.
New virtio types can have tighter validation. Limit UDP GSO packets
inserted via virtio to the same limits imposed by the UDP_SEGMENT
socket interface:
1. must use checksum offload
2. checksum offload matches UDP header
3. no more segments than UDP_MAX_SEGMENTS
4. UDP GSO does not take modifier flags, notably SKB_GSO_TCP_ECN
Fixes: 860b7f27b8f7 ("linux/virtio_net.h: Support USO offload in vnet header.")
Reported-by: syzbot+01cdbc31e9c0ae9b33ac@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/0000000000005039270605eb0b7f@google.com/
Reported-by: syzbot+c99d835ff081ca30f986@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/0000000000005426680605eb0b9f@google.com/
Signed-off-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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As reported by Tom, .NET and applications build on top of it rely
on connect(AF_UNSPEC) to async cancel pending I/O operations on TCP
socket.
The blamed commit below caused a regression, as such cancellation
can now fail.
As suggested by Eric, this change addresses the problem explicitly
causing blocking I/O operation to terminate immediately (with an error)
when a concurrent disconnect() is executed.
Instead of tracking the number of threads blocked on a given socket,
track the number of disconnect() issued on such socket. If such counter
changes after a blocking operation releasing and re-acquiring the socket
lock, error out the current operation.
Fixes: 4faeee0cf8a5 ("tcp: deny tcp_disconnect() when threads are waiting")
Reported-by: Tom Deseyn <tdeseyn@redhat.com>
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1886305
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/f3b95e47e3dbed840960548aebaa8d954372db41.1697008693.git.pabeni@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fix from Christian Brauner:
"An openat() call from io_uring triggering an audit call can apparently
cause the refcount of struct filename to be incremented from multiple
threads concurrently during async execution, triggering a refcount
underflow and hitting a BUG_ON(). That bug has been lurking around
since at least v5.16 apparently.
Switch to an atomic counter to fix that. The underflow check is
downgraded from a BUG_ON() to a WARN_ON_ONCE() but we could easily
remove that check altogether tbh"
* tag 'v6.6-rc7.vfs.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
audit,io_uring: io_uring openat triggers audit reference count underflow
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An io_uring openat operation can update an audit reference count
from multiple threads resulting in the call trace below.
A call to io_uring_submit() with a single openat op with a flag of
IOSQE_ASYNC results in the following reference count updates.
These first part of the system call performs two increments that do not race.
do_syscall_64()
__do_sys_io_uring_enter()
io_submit_sqes()
io_openat_prep()
__io_openat_prep()
getname()
getname_flags() /* update 1 (increment) */
__audit_getname() /* update 2 (increment) */
The openat op is queued to an io_uring worker thread which starts the
opportunity for a race. The system call exit performs one decrement.
do_syscall_64()
syscall_exit_to_user_mode()
syscall_exit_to_user_mode_prepare()
__audit_syscall_exit()
audit_reset_context()
putname() /* update 3 (decrement) */
The io_uring worker thread performs one increment and two decrements.
These updates can race with the system call decrement.
io_wqe_worker()
io_worker_handle_work()
io_wq_submit_work()
io_issue_sqe()
io_openat()
io_openat2()
do_filp_open()
path_openat()
__audit_inode() /* update 4 (increment) */
putname() /* update 5 (decrement) */
__audit_uring_exit()
audit_reset_context()
putname() /* update 6 (decrement) */
The fix is to change the refcnt member of struct audit_names
from int to atomic_t.
kernel BUG at fs/namei.c:262!
Call Trace:
...
? putname+0x68/0x70
audit_reset_context.part.0.constprop.0+0xe1/0x300
__audit_uring_exit+0xda/0x1c0
io_issue_sqe+0x1f3/0x450
? lock_timer_base+0x3b/0xd0
io_wq_submit_work+0x8d/0x2b0
? __try_to_del_timer_sync+0x67/0xa0
io_worker_handle_work+0x17c/0x2b0
io_wqe_worker+0x10a/0x350
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/lkml/MW2PR2101MB1033FFF044A258F84AEAA584F1C9A@MW2PR2101MB1033.namprd21.prod.outlook.com/
Fixes: 5bd2182d58e9 ("audit,io_uring,io-wq: add some basic audit support to io_uring")
Signed-off-by: Dan Clash <daclash@linux.microsoft.com>
Link: https://lore.kernel.org/r/20231012215518.GA4048@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull fbdev fixes and cleanups from Helge Deller:
"Various minor fixes, cleanups and annotations for atyfb, sa1100fb,
omapfb, uvesafb and mmp"
* tag 'fbdev-for-6.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
fbdev: core: syscopyarea: fix sloppy typing
fbdev: core: cfbcopyarea: fix sloppy typing
fbdev: uvesafb: Call cn_del_callback() at the end of uvesafb_exit()
fbdev: uvesafb: Remove uvesafb_exec() prototype from include/video/uvesafb.h
fbdev: sa1100fb: mark sa1100fb_init() static
fbdev: omapfb: fix some error codes
fbdev: atyfb: only use ioremap_uc() on i386 and ia64
fbdev: mmp: Annotate struct mmp_path with __counted_by
fbdev: mmp: Annotate struct mmphw_ctrl with __counted_by
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uvesafb_exec() is a static function defined and called only in
drivers/video/fbdev/uvesafb.c, remove the prototype from
include/video/uvesafb.h.
Fixes the warning:
./include/video/uvesafb.h:112:12: warning: 'uvesafb_exec' declared 'static' but never defined [-Wunused-function]
when including '<video/uvesafb.h>' in an external program.
Signed-off-by: Jorge Maidana <jorgem.linux@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
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Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).
As found with Coccinelle[1], add __counted_by for struct mmp_path.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Helge Deller <deller@gmx.de>
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Pull kvm fixes from Paolo Bonzini:
"ARM:
- Fix the handling of the phycal timer offset when FEAT_ECV and
CNTPOFF_EL2 are implemented
- Restore the functionnality of Permission Indirection that was
broken by the Fine Grained Trapping rework
- Cleanup some PMU event sharing code
MIPS:
- Fix W=1 build
s390:
- One small fix for gisa to avoid stalls
x86:
- Truncate writes to PMU counters to the counter's width to avoid
spurious overflows when emulating counter events in software
- Set the LVTPC entry mask bit when handling a PMI (to match
Intel-defined architectural behavior)
- Treat KVM_REQ_PMI as a wake event instead of queueing host IRQ work
to kick the guest out of emulated halt
- Fix for loading XSAVE state from an old kernel into a new one
- Fixes for AMD AVIC
selftests:
- Play nice with %llx when formatting guest printf and assert
statements
- Clean up stale test metadata
- Zero-initialize structures in memslot perf test to workaround a
suspected 'may be used uninitialized' false positives from GCC"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (21 commits)
KVM: arm64: timers: Correctly handle TGE flip with CNTPOFF_EL2
KVM: arm64: POR{E0}_EL1 do not need trap handlers
KVM: arm64: Add nPIR{E0}_EL1 to HFG traps
KVM: MIPS: fix -Wunused-but-set-variable warning
KVM: arm64: pmu: Drop redundant check for non-NULL kvm_pmu_events
KVM: SVM: Fix build error when using -Werror=unused-but-set-variable
x86: KVM: SVM: refresh AVIC inhibition in svm_leave_nested()
x86: KVM: SVM: add support for Invalid IPI Vector interception
x86: KVM: SVM: always update the x2avic msr interception
KVM: selftests: Force load all supported XSAVE state in state test
KVM: selftests: Load XSAVE state into untouched vCPU during state test
KVM: selftests: Touch relevant XSAVE state in guest for state test
KVM: x86: Constrain guest-supported xfeatures only at KVM_GET_XSAVE{2}
x86/fpu: Allow caller to constrain xfeatures when copying to uabi buffer
KVM: selftests: Zero-initialize entire test_result in memslot perf test
KVM: selftests: Remove obsolete and incorrect test case metadata
KVM: selftests: Treat %llx like %lx when formatting guest printf
KVM: x86/pmu: Synthesize at most one PMI per VM-exit
KVM: x86: Mask LVTPC when handling a PMI
KVM: x86/pmu: Truncate counter value to allowed width on write
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git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 6.6, take #2
- Fix the handling of the phycal timer offset when FEAT_ECV
and CNTPOFF_EL2 are implemented.
- Restore the functionnality of Permission Indirection that
was broken by the Fine Grained Trapping rework
- Cleanup some PMU event sharing code
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Contrary to common belief, HCR_EL2.TGE has a direct and immediate
effect on the way the EL0 physical counter is offset. Flipping
TGE from 1 to 0 while at EL2 immediately changes the way the counter
compared to the CVAL limit.
This means that we cannot directly save/restore the guest's view of
CVAL, but that we instead must treat it as if CNTPOFF didn't exist.
Only in the world switch, once we figure out that we do have CNTPOFF,
can we must the offset back and forth depending on the polarity of
TGE.
Fixes: 2b4825a86940 ("KVM: arm64: timers: Use CNTPOFF_EL2 to offset the physical timer")
Reported-by: Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>
Tested-by: Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here is a small set of char/misc and other smaller driver subsystem
fixes for 6.6-rc6. Included in here are:
- lots of iio driver fixes
- binder memory leak fix
- mcb driver fixes
- counter driver fixes
- firmware loader documentation fix
- documentation update for embargoed hardware issues
All of these have been in linux-next for over a week with no reported
issues"
* tag 'char-misc-6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (22 commits)
iio: pressure: ms5611: ms5611_prom_is_valid false negative bug
dt-bindings: iio: adc: adi,ad7292: Fix additionalProperties on channel nodes
iio: adc: ad7192: Correct reference voltage
iio: light: vcnl4000: Don't power on/off chip in config
iio: addac: Kconfig: update ad74413r selections
iio: pressure: dps310: Adjust Timeout Settings
iio: imu: bno055: Fix missing Kconfig dependencies
iio: adc: imx8qxp: Fix address for command buffer registers
iio: cros_ec: fix an use-after-free in cros_ec_sensors_push_data()
iio: irsd200: fix -Warray-bounds bug in irsd200_trigger_handler
dt-bindings: iio: rohm,bu27010: add missing vdd-supply to example
binder: fix memory leaks of spam and pending work
firmware_loader: Update contact emails for ABI docs
Documentation: embargoed-hardware-issues.rst: Clarify prenotifaction
mcb: remove is_added flag from mcb_device struct
coresight: tmc-etr: Disable warnings for allocation failures
coresight: Fix run time warnings while reusing ETR buffer
iio: admv1013: add mixer_vgate corner cases
iio: pressure: bmp280: Fix NULL pointer exception
iio: dac: ad3552r: Correct device IDs
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When calling mcb_bus_add_devices(), both mcb devices and the mcb
bus will attempt to attach a device to a driver because they share
the same bus_type. This causes an issue when trying to cast the
container of the device to mcb_device struct using to_mcb_device(),
leading to a wrong cast when the mcb_bus is added. A crash occurs
when freing the ida resources as the bus numbering of mcb_bus gets
confused with the is_added flag on the mcb_device struct.
The only reason for this cast was to keep an is_added flag on the
mcb_device struct that does not seem necessary. The function
device_attach() handles already bound devices and the mcb subsystem
does nothing special with this is_added flag so remove it completely.
Fixes: 18d288198099 ("mcb: Correctly initialize the bus's device")
Cc: stable <stable@kernel.org>
Signed-off-by: Jorge Sanjuan Garcia <jorge.sanjuangarcia@duagon.com>
Co-developed-by: Jose Javier Rodriguez Barbarin <JoseJavier.Rodriguez@duagon.com>
Signed-off-by: Jose Javier Rodriguez Barbarin <JoseJavier.Rodriguez@duagon.com>
Link: https://lore.kernel.org/r/20230906114901.63174-2-JoseJavier.Rodriguez@duagon.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs
Pull overlayfs fixes from Amir Goldstein:
- Various fixes for regressions due to conversion to new mount
api in v6.5
- Disable a new mount option syntax (append lowerdir) that was
added in v6.5 because we plan to add a different lowerdir
append syntax in v6.7
* tag 'ovl-fixes-6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs:
ovl: temporarily disable appending lowedirs
ovl: fix regression in showing lowerdir mount option
ovl: fix regression in parsing of mount options with escaped comma
fs: factor out vfs_parse_monolithic_sep() helper
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Factor out vfs_parse_monolithic_sep() from generic_parse_monolithic(),
so filesystems could use it with a custom option separator callback.
Acked-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull CPU hotplug fix from Ingo Molnar:
"Fix a Longsoon build warning by harmonizing the
arch_[un]register_cpu() prototypes between architectures"
* tag 'smp-urgent-2023-10-15' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpu-hotplug: Provide prototypes for arch CPU registration
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Provide common prototypes for arch_register_cpu() and
arch_unregister_cpu(). These are called by acpi_processor.c, with weak
versions, so the prototype for this is already set. It is generally not
necessary for function prototypes to be conditional on preprocessor macros.
Some architectures (e.g. Loongarch) are missing the prototype for this, and
rather than add it to Loongarch's asm/cpu.h, do the job once for everyone.
Since this covers everyone, remove the now unnecessary prototypes in
asm/cpu.h, and therefore remove the 'static' from one of ia64's
arch_register_cpu() definitions.
[ tglx: Bring back the ia64 part and remove the ACPI prototypes ]
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/E1qkoRr-0088Q8-Da@rmk-PC.armlinux.org.uk
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Pull drm fixes from Dave Airlie:
"Weekly fixes, the core is msm and amdgpu with some scattered fixes
across vmwgfx, panel and the core stuff.
atomic-helper:
- Relax checks for unregistered connectors
dma-buf:
- Work around race condition when retrieving fence timestamp
gem:
- Avoid OOB access in BO memory range
panel:
- boe-tv101wun-ml6: Fix flickering
simpledrm:
- Fix error output
vwmgfx:
- Fix size calculation in texture-state code
- Ref GEM BOs in surfaces
msm:
- PHY/link training reset fix
- msm8998 - correct highest bank bit
- skip video mode if timing engine disabled
- check irq_of_parse_and_map return code
- add new lines to some prints
- fail atomic check for max mdp clk test
amdgpu:
- Seamless boot fix
- Fix TTM BO resource check
- SI fix for doorbell handling"
* tag 'drm-fixes-2023-10-13' of git://anongit.freedesktop.org/drm/drm:
drm/tiny: correctly print `struct resource *` on error
drm: Do not overrun array in drm_gem_get_pages()
drm/atomic-helper: relax unregistered connector check
drm/panel: boe-tv101wum-nl6: Completely pull GPW to VGL before TP term
drm/amdgpu: fix SI failure due to doorbells allocation
drm/amdgpu: add missing NULL check
drm/amd/display: Don't set dpms_off for seamless boot
drm/vmwgfx: Keep a gem reference to user bos in surfaces
drm/vmwgfx: fix typo of sizeof argument
drm/msm/dpu: fail dpu_plane_atomic_check() based on mdp clk limits
dma-buf: add dma_fence_timestamp helper
drm/msm/dp: Add newlines to debug printks
drm/msm/dpu: change _dpu_plane_calc_bw() to use u64 to avoid overflow
drm/msm/dsi: fix irq_of_parse_and_map() error checking
drm/msm/dsi: skip the wait for video mode done if not applicable
drm/msm/mdss: fix highest-bank-bit for msm8998
drm/msm/dp: do not reinitialize phy unless retry during link training
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git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Short summary of fixes pull:
* atomic-helper: Relax checks for unregistered connectors
* dma-buf: Work around race condition when retrieving fence timestamp
* gem: Avoid OOB access in BO memory range
* panel:
* boe-tv101wun-ml6: Fix flickering
* simpledrm: Fix error output
* vwmgfx:
* Fix size calculation in texture-state code
* Ref GEM BOs in surfaces
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20231012111638.GA25037@linux-uq9g
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When a fence signals there is a very small race window where the timestamp
isn't updated yet. sync_file solves this by busy waiting for the
timestamp to appear, but on other ocassions didn't handled this
correctly.
Provide a dma_fence_timestamp() helper function for this and use it in
all appropriate cases.
Another alternative would be to grab the spinlock when that happens.
v2 by teddy: add a wait parameter to wait for the timestamp to show up, in case
the accurate timestamp is needed and/or the timestamp is not based on
ktime (e.g. hw timestamp)
v3 chk: drop the parameter again for unified handling
Signed-off-by: Yunxiang Li <Yunxiang.Li@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Fixes: 1774baa64f93 ("drm/scheduler: Change scheduled fence track v2")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: stable@vger.kernel.org
Link: https://patchwork.freedesktop.org/patch/msgid/20230929104725.2358-1-christian.koenig@amd.com
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
- In cgroup1, the `tasks` file could have duplicate pids which can
trigger a warning in seq_file. Fix it by removing duplicate items
after sorting
- Comment update
* tag 'cgroup-for-6.6-rc5-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: Fix incorrect css_set_rwsem reference in comment
cgroup: Remove duplicates in cgroup v1 tasks file
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Since commit f0d9a5f17575 ("cgroup: make css_set_rwsem a spinlock
and rename it to css_set_lock"), css_set_rwsem has been replaced by
css_set_lock. That commit, however, missed the css_set_rwsem reference
in include/linux/cgroup-defs.h. Fix that by changing it to css_set_lock
as well.
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from CAN and BPF.
We have a regression in TC currently under investigation, otherwise
the things that stand off most are probably the TCP and AF_PACKET
fixes, with both issues coming from 6.5.
Previous releases - regressions:
- af_packet: fix fortified memcpy() without flex array.
- tcp: fix crashes trying to free half-baked MTU probes
- xdp: fix zero-size allocation warning in xskq_create()
- can: sja1000: always restart the tx queue after an overrun
- eth: mlx5e: again mutually exclude RX-FCS and RX-port-timestamp
- eth: nfp: avoid rmmod nfp crash issues
- eth: octeontx2-pf: fix page pool frag allocation warning
Previous releases - always broken:
- mctp: perform route lookups under a RCU read-side lock
- bpf: s390: fix clobbering the caller's backchain in the trampoline
- phy: lynx-28g: cancel the CDR check work item on the remove path
- dsa: qca8k: fix qca8k driver for Turris 1.x
- eth: ravb: fix use-after-free issue in ravb_tx_timeout_work()
- eth: ixgbe: fix crash with empty VF macvlan list"
* tag 'net-6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (54 commits)
rswitch: Fix imbalance phy_power_off() calling
rswitch: Fix renesas_eth_sw_remove() implementation
octeontx2-pf: Fix page pool frag allocation warning
nfc: nci: assert requested protocol is valid
af_packet: Fix fortified memcpy() without flex array.
net: tcp: fix crashes trying to free half-baked MTU probes
net/smc: Fix pos miscalculation in statistics
nfp: flower: avoid rmmod nfp crash issues
net: usb: dm9601: fix uninitialized variable use in dm9601_mdio_read
ethtool: Fix mod state of verbose no_mask bitset
net: nfc: fix races in nfc_llcp_sock_get() and nfc_llcp_sock_get_sn()
mctp: perform route lookups under a RCU read-side lock
net: skbuff: fix kernel-doc typos
s390/bpf: Fix unwinding past the trampoline
s390/bpf: Fix clobbering the caller's backchain in the trampoline
net/mlx5e: Again mutually exclude RX-FCS and RX-port-timestamp
net/smc: Fix dependency of SMC on ISM
ixgbe: fix crash with empty VF macvlan list
net/mlx5e: macsec: use update_pn flag instead of PN comparation
net: phy: mscc: macsec: reject PN update requests
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Sergei Trofimovich reported a regression [0] caused by commit a0ade8404c3b
("af_packet: Fix warning of fortified memcpy() in packet_getname().").
It introduced a flex array sll_addr_flex in struct sockaddr_ll as a
union-ed member with sll_addr to work around the fortified memcpy() check.
However, a userspace program uses a struct that has struct sockaddr_ll in
the middle, where a flex array is illegal to exist.
include/linux/if_packet.h:24:17: error: flexible array member 'sockaddr_ll::<unnamed union>::<unnamed struct>::sll_addr_flex' not at end of 'struct packet_info_t'
24 | __DECLARE_FLEX_ARRAY(unsigned char, sll_addr_flex);
| ^~~~~~~~~~~~~~~~~~~~
To fix the regression, let's go back to the first attempt [1] telling
memcpy() the actual size of the array.
Reported-by: Sergei Trofimovich <slyich@gmail.com>
Closes: https://github.com/NixOS/nixpkgs/pull/252587#issuecomment-1741733002 [0]
Link: https://lore.kernel.org/netdev/20230720004410.87588-3-kuniyu@amazon.com/ [1]
Fixes: a0ade8404c3b ("af_packet: Fix warning of fortified memcpy() in packet_getname().")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://lore.kernel.org/r/20231009153151.75688-1-kuniyu@amazon.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Correct punctuation and drop an extraneous word.
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20231008214121.25940-1-rdunlap@infradead.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Indicate next PN update using update_pn flag in macsec_context.
Offloaded MACsec implementations does not know whether or not the
MACSEC_SA_ATTR_PN attribute was passed for an SA update and assume
that next PN should always updated, but this is not always true.
The PN can be reset to its initial value using the following command:
$ ip macsec set macsec0 tx sa 0 off #octeontx2-pf case
Or, the update PN command will succeed even if the driver does not support
PN updates.
$ ip macsec set macsec0 tx sa 0 pn 1 on #mscc phy driver case
Comparing the initial PN with the new PN value is not a solution. When
the user updates the PN using its initial value the command will
succeed, even if the driver does not support it. Like this:
$ ip macsec add macsec0 tx sa 0 pn 1 on key 00 \
ead3664f508eb06c40ac7104cdae4ce5
$ ip macsec set macsec0 tx sa 0 pn 1 on #mlx5 case
Signed-off-by: Radu Pirea (NXP OSS) <radu-nicolae.pirea@oss.nxp.com>
Reviewed-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull quota regression fix from Jan Kara.
* tag 'fs_for_v6.6-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
quota: Fix slow quotaoff
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Eric has reported that commit dabc8b207566 ("quota: fix dqput() to
follow the guarantees dquot_srcu should provide") heavily increases
runtime of generic/270 xfstest for ext4 in nojournal mode. The reason
for this is that ext4 in nojournal mode leaves dquots dirty until the last
dqput() and thus the cleanup done in quota_release_workfn() has to write
them all. Due to the way quota_release_workfn() is written this results
in synchronize_srcu() call for each dirty dquot which makes the dquot
cleanup when turning quotas off extremely slow.
To be able to avoid synchronize_srcu() for each dirty dquot we need to
rework how we track dquots to be cleaned up. Instead of keeping the last
dquot reference while it is on releasing_dquots list, we drop it right
away and mark the dquot with new DQ_RELEASING_B bit instead. This way we
can we can remove dquot from releasing_dquots list when new reference to
it is acquired and thus there's no need to call synchronize_srcu() each
time we drop dq_list_lock.
References: https://lore.kernel.org/all/ZRytn6CxFK2oECUt@debian-BULLSEYE-live-builder-AMD64
Reported-by: Eric Whitney <enwlinux@gmail.com>
Fixes: dabc8b207566 ("quota: fix dqput() to follow the guarantees dquot_srcu should provide")
CC: stable@vger.kernel.org
Signed-off-by: Jan Kara <jack@suse.cz>
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git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux
Pull hyperv fixes from Wei Liu:
- fixes for Hyper-V VTL code (Saurabh Sengar and Olaf Hering)
- fix hv_kvp_daemon to support keyfile based connection profile
(Shradha Gupta)
* tag 'hyperv-fixes-signed-20231009' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
hv/hv_kvp_daemon:Support for keyfile based connection profile
hyperv: reduce size of ms_hyperv_info
x86/hyperv: Add common print prefix "Hyper-V" in hv_init
x86/hyperv: Remove hv_vtl_early_init initcall
x86/hyperv: Restrict get_vtl to only VTL platforms
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