media: mediatek: vcodec: adding lock to protect encoder context list

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Add a lock for the ctx_list, to avoid accessing a NULL pointer
within the 'vpu_enc_ipi_handler' function when the ctx_list has
been deleted due to an unexpected behavior on the SCP IP block.

Fixes: 1972e32431 ("media: mediatek: vcodec: Fix possible invalid memory access for encoder")
Signed-off-by: Yunfei Dong <yunfei.dong@mediatek.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>

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Yunfei Dong 2024-03-14 20:30:09 +08:00 • committed by Hans Verkuil

parent 6467cda18c

commit afaaf3a0f6

4 changed files with 11 additions and 2 deletions

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4

drivers/media/platform/mediatek/vcodec/common/mtk_vcodec_fw_vpu.c

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5

drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.c

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2

drivers/media/platform/mediatek/vcodec/encoder/mtk_vcodec_enc_drv.h

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2

drivers/media/platform/mediatek/vcodec/encoder/venc_vpu_if.c

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