qxl: check for kmap failures

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commit f4cceb2aff upstream.

If kmap fails, it leads to memory corruption.

Fixes: f64122c1f6 ('drm: add new QXL driver. (v1.4)')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20160711084633.GA31411@mwanda
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

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Dan Carpenter 2016-07-11 11:46:33 +03:00 • committed by Ben Hutchings

parent 281acdf0e9

commit 39f748b06b

1 changed files with 2 additions and 0 deletions

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drivers/gpu/drm/qxl/qxl_draw.c

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