]> git.baikalelectronics.ru Git - kernel.git/commit
drm/fb-helper: Fix potential NULL pointer dereference
authorGustavo A. R. Silva <garsilva@embeddedor.com>
Tue, 5 Dec 2017 17:46:28 +0000 (11:46 -0600)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 6 Dec 2017 20:45:28 +0000 (21:45 +0100)
commit95cf4442ac6b94d1b2c357518efd98dd5d57c17b
tree266b625bfd7d9371a0022c944b3800e7dba5f783
parent0f171ed20f06fcfd543c6a4dd19267bceffae006
drm/fb-helper: Fix potential NULL pointer dereference

fb_helper is being dereferenced before it is null checked,
hence there is a potential null pointer dereference.

Fix this by moving the pointer dereference after fb_helper
has been null checked.

This issue was detected with the help of Coccinelle.

Fixes: 28bd95702e66 ("drm/fb-helper: Handle function NULL argument")
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20171205174628.GA31189@embeddedor.com
drivers/gpu/drm/drm_fb_helper.c