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media: venus: venc: Fix potential null pointer dereference on pointer fmt

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[ Upstream commit 09ea9719a423fc675d40dd05407165e161ea0c48 ]

Currently the call to find_format can potentially return a NULL to
fmt and the nullpointer is later dereferenced on the assignment of
pixmp->num_planes = fmt->num_planes.  Fix this by adding a NULL pointer
check and returning NULL for the failure case.

Addresses-Coverity: ("Dereference null return")

Fixes: aaaa93eda6 ("[media] media: venus: venc: add video encoder files")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Colin Ian King 2021-07-09 14:30:25 +02:00 committed by AuxXxilium
parent 7e77c430d9
commit 295b936d3b
1 changed files with 2 additions and 0 deletions
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2
drivers/media/platform/qcom/venus/venc.c
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@ -183,6 +183,8 @@ venc_try_fmt_common(struct venus_inst *inst, struct v4l2_format *f)
else
return NULL;
fmt = find_format(inst, pixmp->pixelformat, f->type);
if (!fmt)
return NULL;
}
pixmp->width = clamp(pixmp->width, frame_width_min(inst),