This reverts commit 28a01c6b3f which is
commit 73b03b27736e440e3009fe1319cbc82d2cd1290c upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I69e0e9a4c495afd1fb38ba691c5616e49b7fcf63
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 87e0f28eda which is
commit 0f74f8b667 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: Ia86a905c65bddaf79dc1e8fffc0609cb2b5b115c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 4fa1dfad77 which is
commit 317bacf960a4879af22d12175f47d284930b3273 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I536822f1c050c517e1b45af64c0703bd3f18bba4
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 6d4fffb144 which is
commit 05b26c31a4859af9e75b7de77458e99358364fe1 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I8af1a9e08e30df1b97d9b518d2b6959ca3ea1893
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 4c135c0a52 which is
commit 34d946b723b53488ab39d8ac540ddf9db255317a upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: Iae13a40d3026c6ac7c352f00ff6e80bb332ddecd
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 9be9327905 which is
commit aef79e189ba2b32f78bd35daf2c0b41f3868a321 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: Ic446c45504662c6e2c2d0a547677ed68eeddd59e
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 9530ad77c2 which is
commit 20ade67bb1645f5ce8f37fa79ddfebbc5b5b24ef upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I90ef4cfc92da57f38f44f60ba53bc0e948e98e31
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 6d636e0934 which is
commit 25bc99be5fe53853053ceeaa328068c49dc1e799 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: Iac7ace1a9671eb1c57dac23f885ab615368348cc
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 9102582762 which is
commit d6dd5bafaa upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I9446f192e30f403cb3e9ea377f566e076aa73604
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 3c2a6d4d02 which is
commit 688d2eb4c6fcfdcdaed0592f9df9196573ff5ce2 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: Ie3855bc8646589ff198399f6c3f80c14f4e05d2a
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit e195da0610 which is
commit 16aed0a6520ba01b7d22c32e193fc1ec674f92d4 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I62c4368ec3d87e5398ca5e02c7c08451c824d442
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 432b688424 which is
commit 2f552fa280590e61bd3dbe66a7b54b99caa642a4 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I81c1f29aa2ad7e5776c8c7dfd9257d866b943d54
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 8c77c55f45 which is
commit 851bd21cdb55e727ab29280bc9f6b678164f802a upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I1b3dbe3ece19354d604b386d3d99f5456f290d0b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Steps on the way to 6.1.121
Resolved merge conflicts in:
drivers/mmc/core/card.h
include/linux/mmc/card.h
Change-Id: I0f59989030d630651cfd6bc28c45db5f313db1fe
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
In commit b6109556ca ("can: gs_usb: add usb endpoint address detection
at driver probe step"), the usb_find_common_endpoints() function is now
called in the gs_usb module so add it to the symbol list to fix the
build.
Fixes: b6109556ca ("can: gs_usb: add usb endpoint address detection at driver probe step")
Change-Id: Ib8a245d3ca6e6e72852892a686335f42ab5ba6fd
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit e470d423b0 which is
commit ae131f4970 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I5292b6943ca50ef57b754862ddd33f7a782310c9
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit f688979e42 which is
commit 3c3a24cb0a upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I1614e323a505f05d64b0a5171b35cdd30cf29a42
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 981d647c6f which is
commit 1465036b10be4b8b00eb31c879e86de633ad74c1 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I33d7231dae0f23df8750010315515440e2687a9c
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Steps on the way to 6.1.121
Resolves merge conflicts in:
fs/f2fs/file.c
fs/f2fs/segment.c
Change-Id: Ib221190cc792a39283e1aac50f5038484f2ef1a2
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 9c116890ae which is
commit 114b4bb1cc19239b272d52ebbe156053483fe2f8 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: Ic1ec5456033ee5912e94492fa1c39b71a7b60a24
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit 916551244a which is
commit 1d55a6974756cf3979efd2cc68bcece611a44053 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: Ib281e3a07e3b65d4a0ec242327efcb15d0e8cb28
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit adf8650938 which is
commit 86e8921df05c6e9423ab74ab8d41022775d8b83a upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: If4e7565a3a8661f82d177129ad864452f84cdb3f
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit ad3c88eb3c which is
commit b4cb4a1391dcdc640c4ade003aaf0ee19cc8d509 upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: I52249fb612f453572407a5a8098699d69d23348b
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This reverts commit b2f26a27ea which is
commit eb02688c5c45c3e7af7e71f036a7144f5639cbfe upstream.
It breaks the Android kernel abi and can be brought back in the future
in an abi-safe way if it is really needed.
Bug: 161946584
Change-Id: Ied6f94415d8fc58e59fa2bbc15871fb6848cab17
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
[ Upstream commit cd068d51594d9635bf6688fc78717572b78bce6a ]
GIGASTONE Gaming Plus microSD cards manufactured on 02/2022 report that
they support poweroff notification and cache, but they are not working
correctly.
Flush Cache bit never gets cleared in sd_flush_cache() and Poweroff
Notification Ready bit also never gets set to 1 within 1 second from the
end of busy of CMD49 in sd_poweroff_notify().
This leads to I/O error and runtime PM error state.
I observed that the same card manufactured on 01/2024 works as expected.
This problem seems similar to the Kingston cards fixed with
commit c467c8f081 ("mmc: Add MMC_QUIRK_BROKEN_SD_CACHE for Kingston
Canvas Go Plus from 11/2019") and should be handled using quirks.
CID for the problematic card is here.
12345641535443002000000145016200
Manufacturer ID is 0x12 and defined as CID_MANFID_GIGASTONE as of now,
but would like comments on what naming is appropriate because MID list
is not public and not sure it's right.
Signed-off-by: Keita Aihara <keita.aihara@sony.com>
Link: https://lore.kernel.org/r/20240913094417.GA4191647@sony.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 61a830bc0ea69a05d8a4534f825c6aa618263649 ]
Add Dexatek Technology Ltd USB Video Grabber 1d19:6108 to the cx231xx
driver. This device is sold under the name "BAUHN DVD Maker (DK8723)" by
ALDI in Australia.
This device is similar to 1d19:6109, which is already included in cx231xx.
Both video and audio capture function correctly after installing the
patched cx231xx driver.
Patch Changelog
v1:
- Initial submission.
v2:
- Fix SoB + Improve subject.
v3:
- Rephrase message to not exceed 75 characters per line.
- Removed reference to external GitHub URL.
Signed-off-by: Rohan Barar <rohan.barar@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit de20037e1b3c2f2ca97b8c12b8c7bca8abd509a7 ]
Warning at every leaking bits can cause a flood of message, triggering
various stall-warning mechanisms to fire, including CSD locks, which
makes the machine to be unusable.
Track the bits that are being leaked, and only warn when a new bit is
set.
That said, this patch will help with the following issues:
1) It will tell us which bits are being set, so, it is easy to
communicate it back to vendor, and to do a root-cause analyzes.
2) It avoid the machine to be unusable, because, worst case
scenario, the user gets less than 60 WARNs (one per unhandled bit).
Suggested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Sandipan Das <sandipan.das@amd.com>
Reviewed-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lkml.kernel.org/r/20241001141020.2620361-1-leitao@debian.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 59458fa4ddb47e7891c61b4a928d13d5f5b00aa0 ]
Ran Xiaokai reports that with a KCSAN-enabled PREEMPT_RT kernel, we can see
splats like:
| BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48
| in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/1
| preempt_count: 10002, expected: 0
| RCU nest depth: 0, expected: 0
| no locks held by swapper/1/0.
| irq event stamp: 156674
| hardirqs last enabled at (156673): [<ffffffff81130bd9>] do_idle+0x1f9/0x240
| hardirqs last disabled at (156674): [<ffffffff82254f84>] sysvec_apic_timer_interrupt+0x14/0xc0
| softirqs last enabled at (0): [<ffffffff81099f47>] copy_process+0xfc7/0x4b60
| softirqs last disabled at (0): [<0000000000000000>] 0x0
| Preemption disabled at:
| [<ffffffff814a3e2a>] paint_ptr+0x2a/0x90
| CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.11.0+ #3
| Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-0-ga698c8995f-prebuilt.qemu.org 04/01/2014
| Call Trace:
| <IRQ>
| dump_stack_lvl+0x7e/0xc0
| dump_stack+0x1d/0x30
| __might_resched+0x1a2/0x270
| rt_spin_lock+0x68/0x170
| kcsan_skip_report_debugfs+0x43/0xe0
| print_report+0xb5/0x590
| kcsan_report_known_origin+0x1b1/0x1d0
| kcsan_setup_watchpoint+0x348/0x650
| __tsan_unaligned_write1+0x16d/0x1d0
| hrtimer_interrupt+0x3d6/0x430
| __sysvec_apic_timer_interrupt+0xe8/0x3a0
| sysvec_apic_timer_interrupt+0x97/0xc0
| </IRQ>
On a detected data race, KCSAN's reporting logic checks if it should
filter the report. That list is protected by the report_filterlist_lock
*non-raw* spinlock which may sleep on RT kernels.
Since KCSAN may report data races in any context, convert it to a
raw_spinlock.
This requires being careful about when to allocate memory for the filter
list itself which can be done via KCSAN's debugfs interface. Concurrent
modification of the filter list via debugfs should be rare: the chosen
strategy is to optimistically pre-allocate memory before the critical
section and discard if unused.
Link: https://lore.kernel.org/all/20240925143154.2322926-1-ranxiaokai627@163.com/
Reported-by: Ran Xiaokai <ran.xiaokai@zte.com.cn>
Tested-by: Ran Xiaokai <ran.xiaokai@zte.com.cn>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 27141b690547da5650a420f26ec369ba142a9ebb ]
The PAC exec_sign_all() test spawns some child processes, creating pipes
to be stdin and stdout for the child. It cleans up most of the file
descriptors that are created as part of this but neglects to clean up the
parent end of the child stdin and stdout. Add the missing close() calls.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20241111-arm64-pac-test-collisions-v1-1-171875f37e44@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 70958a949d852cbecc3d46127bf0b24786df0130 ]
If you follow the seed/sprout wiki, it suggests the following workflow:
btrfstune -S 1 seed_dev
mount seed_dev mnt
btrfs device add sprout_dev
mount -o remount,rw mnt
The first mount mounts the FS readonly, which results in not setting
BTRFS_FS_OPEN, and setting the readonly bit on the sb. The device add
somewhat surprisingly clears the readonly bit on the sb (though the
mount is still practically readonly, from the users perspective...).
Finally, the remount checks the readonly bit on the sb against the flag
and sees no change, so it does not run the code intended to run on
ro->rw transitions, leaving BTRFS_FS_OPEN unset.
As a result, when the cleaner_kthread runs, it sees no BTRFS_FS_OPEN and
does no work. This results in leaking deleted snapshots until we run out
of space.
I propose fixing it at the first departure from what feels reasonable:
when we clear the readonly bit on the sb during device add.
A new fstest I have written reproduces the bug and confirms the fix.
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 2e8b6bc0ab41ce41e6dfcc204b6cc01d5abbc952 ]
[PROBLEM]
It is very common for udev to trigger device scan, and every time a
mounted btrfs device got re-scan from different soft links, we will get
some of unnecessary device path updates, this is especially common
for LVM based storage:
# lvs
scratch1 test -wi-ao---- 10.00g
scratch2 test -wi-a----- 10.00g
scratch3 test -wi-a----- 10.00g
scratch4 test -wi-a----- 10.00g
scratch5 test -wi-a----- 10.00g
test test -wi-a----- 10.00g
# mkfs.btrfs -f /dev/test/scratch1
# mount /dev/test/scratch1 /mnt/btrfs
# dmesg -c
[ 205.705234] BTRFS: device fsid 7be2602f-9e35-4ecf-a6ff-9e91d2c182c9 devid 1 transid 6 /dev/mapper/test-scratch1 (253:4) scanned by mount (1154)
[ 205.710864] BTRFS info (device dm-4): first mount of filesystem 7be2602f-9e35-4ecf-a6ff-9e91d2c182c9
[ 205.711923] BTRFS info (device dm-4): using crc32c (crc32c-intel) checksum algorithm
[ 205.713856] BTRFS info (device dm-4): using free-space-tree
[ 205.722324] BTRFS info (device dm-4): checking UUID tree
So far so good, but even if we just touched any soft link of
"dm-4", we will get quite some unnecessary device path updates.
# touch /dev/mapper/test-scratch1
# dmesg -c
[ 469.295796] BTRFS info: devid 1 device path /dev/mapper/test-scratch1 changed to /dev/dm-4 scanned by (udev-worker) (1221)
[ 469.300494] BTRFS info: devid 1 device path /dev/dm-4 changed to /dev/mapper/test-scratch1 scanned by (udev-worker) (1221)
Such device path rename is unnecessary and can lead to random path
change due to the udev race.
[CAUSE]
Inside device_list_add(), we are using a very primitive way checking if
the device has changed, strcmp().
Which can never handle links well, no matter if it's hard or soft links.
So every different link of the same device will be treated as a different
device, causing the unnecessary device path update.
[FIX]
Introduce a helper, is_same_device(), and use path_equal() to properly
detect the same block device.
So that the different soft links won't trigger the rename race.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Link: https://bugzilla.suse.com/show_bug.cgi?id=1230641
Reported-by: Fabian Vogt <fvogt@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit a0bd7dacbd51c632b8e2c0500b479af564afadf3 ]
CPU hotplug remove handling triggers the following function
call sequence:
CPUHP_AP_PERF_S390_SF_ONLINE --> s390_pmu_sf_offline_cpu()
...
CPUHP_AP_PERF_ONLINE --> perf_event_exit_cpu()
The s390 CPUMF sampling CPU hotplug handler invokes:
s390_pmu_sf_offline_cpu()
+--> cpusf_pmu_setup()
+--> setup_pmc_cpu()
+--> deallocate_buffers()
This function de-allocates all sampling data buffers (SDBs) allocated
for that CPU at event initialization. It also clears the
PMU_F_RESERVED bit. The CPU is gone and can not be sampled.
With the event still being active on the removed CPU, the CPU event
hotplug support in kernel performance subsystem triggers the
following function calls on the removed CPU:
perf_event_exit_cpu()
+--> perf_event_exit_cpu_context()
+--> __perf_event_exit_context()
+--> __perf_remove_from_context()
+--> event_sched_out()
+--> cpumsf_pmu_del()
+--> cpumsf_pmu_stop()
+--> hw_perf_event_update()
to stop and remove the event. During removal of the event, the
sampling device driver tries to read out the remaining samples from
the sample data buffers (SDBs). But they have already been freed
(and may have been re-assigned). This may lead to a use after free
situation in which case the samples are most likely invalid. In the
best case the memory has not been reassigned and still contains
valid data.
Remedy this situation and check if the CPU is still in reserved
state (bit PMU_F_RESERVED set). In this case the SDBs have not been
released an contain valid data. This is always the case when
the event is removed (and no CPU hotplug off occured).
If the PMU_F_RESERVED bit is not set, the SDB buffers are gone.
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 229e6ee43d2a160a1592b83aad620d6027084aad upstream.
Null pointer dereference occurs due to a race between smmu
driver probe and client driver probe, when of_dma_configure()
for client is called after the iommu_device_register() for smmu driver
probe has executed but before the driver_bound() for smmu driver
has been called.
Following is how the race occurs:
T1:Smmu device probe T2: Client device probe
really_probe()
arm_smmu_device_probe()
iommu_device_register()
really_probe()
platform_dma_configure()
of_dma_configure()
of_dma_configure_id()
of_iommu_configure()
iommu_probe_device()
iommu_init_device()
arm_smmu_probe_device()
arm_smmu_get_by_fwnode()
driver_find_device_by_fwnode()
driver_find_device()
next_device()
klist_next()
/* null ptr
assigned to smmu */
/* null ptr dereference
while smmu->streamid_mask */
driver_bound()
klist_add_tail()
When this null smmu pointer is dereferenced later in
arm_smmu_probe_device, the device crashes.
Fix this by deferring the probe of the client device
until the smmu device has bound to the arm smmu driver.
Fixes: 021bb8420d ("iommu/arm-smmu: Wire up generic configuration support")
Cc: stable@vger.kernel.org
Co-developed-by: Prakash Gupta <quic_guptap@quicinc.com>
Signed-off-by: Prakash Gupta <quic_guptap@quicinc.com>
Signed-off-by: Pratyush Brahma <quic_pbrahma@quicinc.com>
Link: https://lore.kernel.org/r/20241004090428.2035-1-quic_pbrahma@quicinc.com
[will: Add comment]
Signed-off-by: Will Deacon <will@kernel.org>
[rm: backport for context conflict prior to 6.8]
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 5c3793604f91123bf49bc792ce697a0bef4c173c upstream.
The never-taken branch leads to an invalid bounds condition, which is by
design. To avoid the unwanted warning from the compiler, hide the
variable from the optimizer.
../lib/stackinit_kunit.c: In function 'do_nothing_u16_zero':
../lib/stackinit_kunit.c:51:49: error: array subscript 1 is outside array bounds of 'u16[0]' {aka 'short unsigned int[]'} [-Werror=array-bounds=]
51 | #define DO_NOTHING_RETURN_SCALAR(ptr) *(ptr)
| ^~~~~~
../lib/stackinit_kunit.c:219:24: note: in expansion of macro 'DO_NOTHING_RETURN_SCALAR'
219 | return DO_NOTHING_RETURN_ ## which(ptr + 1); \
| ^~~~~~~~~~~~~~~~~~
Link: https://lkml.kernel.org/r/20241117113813.work.735-kees@kernel.org
Signed-off-by: Kees Cook <kees@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7f0fa47ceebcff0e3591bb7e32a71a2cd7846149 upstream.
The Vexia Edu Atla 10 tablet distributed to schools in the Spanish
Andalucía region has no ACPI fwnode associated with the SDHCI controller
for its microsd-slot and thus has no ACPI GPIO resource info.
This causes the following error to be logged and the slot to not work:
[ 10.572113] sdhci-pci 0000:00:12.0: failed to setup card detect gpio
Add a DMI quirk table for providing gpiod_lookup_tables with manually
provided CD GPIO info and use this DMI table to provide the CD GPIO info
on this tablet. This fixes the microsd-slot not working.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Message-ID: <20241118210049.311079-1-hdegoede@redhat.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit fe52c649438b8489c9456681d93a9b3de3d38263 upstream.
One alternative to the fix Christian proposed in
https://lore.kernel.org/dri-devel/20241024124159.4519-3-christian.koenig@amd.com/
is to replace the rather complex open coded sorting loops with the kernel
standard sort followed by a context squashing pass.
Proposed advantage of this would be readability but one concern Christian
raised was that there could be many fences, that they are typically mostly
sorted, and so the kernel's heap sort would be much worse by the proposed
algorithm.
I had a look running some games and vkcube to see what are the typical
number of input fences. Tested scenarios:
1) Hogwarts Legacy under Gamescope
450 calls per second to __dma_fence_unwrap_merge.
Percentages per number of fences buckets, before and after checking for
signalled status, sorting and flattening:
N Before After
0 0.91%
1 69.40%
2-3 28.72% 9.4% (90.6% resolved to one fence)
4-5 0.93%
6-9 0.03%
10+
2) Cyberpunk 2077 under Gamescope
1050 calls per second, amounting to 0.01% CPU time according to perf top.
N Before After
0 1.13%
1 52.30%
2-3 40.34% 55.57%
4-5 1.46% 0.50%
6-9 2.44%
10+ 2.34%
3) vkcube under Plasma
90 calls per second.
N Before After
0
1
2-3 100% 0% (Ie. all resolved to a single fence)
4-5
6-9
10+
In the case of vkcube all invocations in the 2-3 bucket were actually
just two input fences.
From these numbers it looks like the heap sort should not be a
disadvantage, given how the dominant case is <= 2 input fences which heap
sort solves with just one compare and swap. (And for the case of one input
fence we have a fast path in the previous patch.)
A complementary possibility is to implement a different sorting algorithm
under the same API as the kernel's sort() and so keep the simplicity,
potentially moving the new sort under lib/ if it would be found more
widely useful.
v2:
* Hold on to fence references and reduce commentary. (Christian)
* Record and use latest signaled timestamp in the 2nd loop too.
* Consolidate zero or one fences fast paths.
v3:
* Reverse the seqno sort order for a simpler squashing pass. (Christian)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Fixes: 245a4a7b53 ("dma-buf: generalize dma_fence unwrap & merging v3")
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3617
Cc: Christian König <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Friedrich Vock <friedrich.vock@gmx.de>
Cc: linux-media@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linaro-mm-sig@lists.linaro.org
Cc: <stable@vger.kernel.org> # v6.0+
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241115102153.1980-3-tursulin@igalia.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7912405643a14b527cd4a4f33c1d4392da900888 upstream.
The compiler can fully inline the actual handler function of an interrupt
entry into the .irqentry.text entry point. If such a function contains an
access which has an exception table entry, modpost complains about a
section mismatch:
WARNING: vmlinux.o(__ex_table+0x447c): Section mismatch in reference ...
The relocation at __ex_table+0x447c references section ".irqentry.text"
which is not in the list of authorized sections.
Add .irqentry.text to OTHER_SECTIONS to cure the issue.
Reported-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org # needed for linux-5.4-y
Link: https://lore.kernel.org/all/20241128111844.GE10431@google.com/
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
[ bump the size of good_tosec[] to prevent overflow - gregkh ]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
