media: atomisp: Ensure that USERPTR pointers are page aligned

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The atomisp code needs USERPTR pointers to be page aligned,
otherwise bad things (scribbling over other parts of the
process' RAM) happen.

Add a check to ensure this and exit VIDIOC_QBUF calls with
unaligned pointers with -EINVAL.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

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Hans de Goede 2022-08-21 20:29:06 +02:00 • committed by Mauro Carvalho Chehab

parent 30cf7e90f0

commit 6e6c4ae0f0

1 changed files with 6 additions and 0 deletions

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drivers/staging/media/atomisp/pci/atomisp_ioctl.c

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