Dmitry Osipenko da2a1aa058 drm/gem: Properly annotate WW context on drm_gem_lock_reservations() error ...

commit 2939deac1f upstream.

Use ww_acquire_fini() in the error code paths. Otherwise lockdep
thinks that lock is held when lock's memory is freed after the
drm_gem_lock_reservations() error. The ww_acquire_context needs to be
annotated as "released", which fixes the noisy "WARNING: held lock freed!"
splat of VirtIO-GPU driver with CONFIG_DEBUG_MUTEXES=y and enabled lockdep.

Cc: stable@vger.kernel.org
Fixes: 7edc3e3b97 ("drm: Add helpers for locking an array of BO reservations.")
Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220630200405.1883897-2-dmitry.osipenko@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-08-17 14:22:53 +02:00

..

drm

drm/gem: Properly annotate WW context on drm_gem_lock_reservations() error

2022-08-17 14:22:53 +02:00

host1x

gpu: host1x: Fix a memory leak in 'host1x_remove()'

2022-04-08 14:23:36 +02:00

ipu-v3

gpu: ipu-v3: Fix dev_dbg frequency output

2022-04-20 09:34:16 +02:00

trace

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vga

vgaarb: don't pass a cookie to vga_client_register

2021-07-21 10:29:10 +02:00

Makefile

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