media: s5p-mfc: fix possible null-pointer dereference in s5p_mfc_probe()

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The variable pdev is assigned to dev->plat_dev, and dev->plat_dev is
checked in:
  if (!dev->plat_dev)

This indicates both dev->plat_dev and pdev can be NULL. If so, the
function dev_err() is called to print error information.
  dev_err(&pdev->dev, "No platform data specified\n");

However, &pdev->dev is an illegal address, and it is dereferenced in
dev_err().

To fix this possible null-pointer dereference, replace dev_err() with
mfc_err().

Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Signed-off-by: Tuo Li <islituo@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

...

This commit is contained in:

Tuo Li 2021-08-05 09:55:35 +02:00 • committed by Mauro Carvalho Chehab

parent ea8a5c118e

commit 8515965e5e

1 changed files with 1 additions and 1 deletions

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drivers/media/platform/s5p-mfc/s5p_mfc.c

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