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| author | Tvrtko Ursulin <tvrtko.ursulin@igalia.com> | 2024-08-13 11:25:04 +0100 |
|---|---|---|
| committer | Maíra Canal <mcanal@igalia.com> | 2024-08-28 11:36:53 -0300 |
| commit | 9d824c7fce58f59982228aa85b0376b113cdfa35 (patch) | |
| tree | e4d362dd570333a34e324fe318f5edf9313c95fa /drivers/hwmon/iio_hwmon.c | |
| parent | b49420d6a1aeb399e5b107fc6eb8584d0860fbd7 (diff) | |
drm/v3d: Disable preemption while updating GPU statsdrm-misc-fixes-2024-08-29
We forgot to disable preemption around the write_seqcount_begin/end() pair
while updating GPU stats:
[ ] WARNING: CPU: 2 PID: 12 at include/linux/seqlock.h:221 __seqprop_assert.isra.0+0x128/0x150 [v3d]
[ ] Workqueue: v3d_bin drm_sched_run_job_work [gpu_sched]
<...snip...>
[ ] Call trace:
[ ] __seqprop_assert.isra.0+0x128/0x150 [v3d]
[ ] v3d_job_start_stats.isra.0+0x90/0x218 [v3d]
[ ] v3d_bin_job_run+0x23c/0x388 [v3d]
[ ] drm_sched_run_job_work+0x520/0x6d0 [gpu_sched]
[ ] process_one_work+0x62c/0xb48
[ ] worker_thread+0x468/0x5b0
[ ] kthread+0x1c4/0x1e0
[ ] ret_from_fork+0x10/0x20
Fix it.
Cc: Maíra Canal <mcanal@igalia.com>
Cc: stable@vger.kernel.org # v6.10+
Fixes: 6abe93b621ab ("drm/v3d: Fix race-condition between sysfs/fdinfo and interrupt handler")
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Acked-by: Maíra Canal <mcanal@igalia.com>
Signed-off-by: Maíra Canal <mcanal@igalia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240813102505.80512-1-tursulin@igalia.com
Diffstat (limited to 'drivers/hwmon/iio_hwmon.c')
0 files changed, 0 insertions, 0 deletions