drm: Prevent NULL deref in drm_name_info()

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If a driver does not have a parent, or never sets the unique name for
itself, then we may proceed to chase a NULL dereference through
debugfs/.../name.

Testcase: igt/vgem_basic/debugfs
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1466448813-23340-1-git-send-email-chris@chris-wilson.co.uk

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Chris Wilson 2016-06-20 19:53:33 +01:00 • committed by Daniel Vetter

parent c001da4f7c

commit e4245ea898

1 changed files with 10 additions and 11 deletions

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19

drivers/gpu/drm/drm_info.c

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