media: mediatek: vcodec: Fix possible invalid memory access for decoder

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The vpu maybe null pointer or unreasonable value when scp crash, need to
validate that the vpu pointer and the vpu instance within this context is
valid in case of leading to kernel reboot.

Fixes: 590577a4e5 ("[media] vcodec: mediatek: Add Mediatek V4L2 Video Decoder Driver")
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reported-by: Steve Cho <stevecho@google.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

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Yunfei Dong 2023-08-02 22:53:01 +08:00 • committed by Mauro Carvalho Chehab

parent 9d86be9bda

commit 655b86e52e

2 changed files with 53 additions and 28 deletions

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2

drivers/media/platform/mediatek/vcodec/decoder/mtk_vcodec_dec_drv.h

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89

drivers/media/platform/mediatek/vcodec/decoder/vdec_vpu_if.c

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