diff options
| author | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2026-04-08 15:42:05 +0300 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@ideasonboard.com> | 2026-04-23 15:53:46 +0300 |
| commit | f6c73e7156b54d8b9ddf1a27f4e93d3a1e49a73e (patch) | |
| tree | b2ba6dd817e9eb44b2bcfa5c6eefd6bccff88f8b /block | |
| parent | dc6d51959ec0c08366d5aaeb5b8fb02d814d1e4b (diff) | |
drm: rcar-du: Fix crash when no CMM is available
Commit 3bce3fdd1ff2 ("drm: rcar-du: Don't leak device_link to CMM")
refactored CMM handling, and introduced an incorrect test for CMM
availability. When no CMM is present, the rcrtc->cmm field is NULL,
testing rcrtc->cmm->dev causes a NULL pointer dereference. This slipped
through testing as all tests were run with the CMM present.
Fix this issue by correctly testing for rcrtc->cmm.
Fixes: 3bce3fdd1ff2 ("drm: rcar-du: Don't leak device_link to CMM")
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Closes: https://lore.kernel.org/dri-devel/CAMuHMdXomz9GFDqkBjGX9Sda_GLccPcrihvFbOz0GAitDVNTbw@mail.gmail.com
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260408124205.1962448-1-laurent.pinchart+renesas@ideasonboard.com
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
(cherry picked from commit 3e9a1da270ddff449b1ad9eadc958f43bc204bd2)
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions