Colin Ian King 4be0454349 drm/v3d: Fix null pointer dereference of pointer perfmon ...

[ Upstream commit ce7a1ecf3f ]

In the unlikely event that pointer perfmon is null the WARN_ON return path
occurs after the pointer has already been deferenced. Fix this by only
dereferencing perfmon after it has been null checked.

Fixes: 26a4dc29b7 ("drm/v3d: Expose performance counters to userspace")
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Juan A. Suarez <jasuarez@igalia.com>
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220424183512.1365683-1-colin.i.king@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-06-09 10:22:51 +02:00

..

Kconfig

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21 10:50:46 +02:00

Makefile

drm/v3d: Expose performance counters to userspace

2021-07-21 00:19:59 +01:00

v3d_bo.c

drm/shmem-helper: Use cached mappings by default

2020-11-24 09:10:21 +01:00

v3d_debugfs.c

drm/v3d: Delete v3d_dev->dev

2020-04-28 15:15:52 +02:00

v3d_drv.c

drm/v3d/v3d_drv: Check for error num after setting mask

2022-04-08 14:23:24 +02:00

v3d_drv.h

drm/v3d: Expose performance counters to userspace

2021-07-21 00:19:59 +01:00

v3d_fence.c

drm/v3d: Add support for compute shader dispatch.

2019-04-18 09:54:10 -07:00

v3d_gem.c

drm/v3d: fix missing unlock

2022-04-13 20:59:03 +02:00

v3d_irq.c

drm/v3d: Don't clear MMU control bits on exception

2021-01-06 18:38:57 +01:00

v3d_mmu.c

drm: v3d: fix common struct sg_table related issues

2020-09-10 08:18:35 +02:00

v3d_perfmon.c

drm/v3d: Fix null pointer dereference of pointer perfmon

2022-06-09 10:22:51 +02:00

v3d_regs.h

drm/v3d: Expose performance counters to userspace

2021-07-21 00:19:59 +01:00

v3d_sched.c

drm/v3d: Expose performance counters to userspace

2021-07-21 00:19:59 +01:00

v3d_trace_points.c

…

v3d_trace.h

drm/v3d: Add support for compute shader dispatch.

2019-04-18 09:54:10 -07:00