Messages in this thread | | | From | Javier Martinez Canillas <> | Subject | [PATCH 0/2] fbdev: Fix a NULL pointer dereference in fb_release() | Date | Mon, 2 May 2022 15:09:42 +0200 |
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Hello,
This small series contains fixes for two bugs I found in fbmem.c, that may explain a bug reported in the rpi4 [0] when using simplefb and vc4 drivers.
I was not able to reproduce the mentioned bug, but looking at the code I think that it might explain the issue.
I've tested these patches in a rpi4 with both simplefb and vc4 drivers built-in and did not find any regression.
[0]: https://github.com/raspberrypi/linux/issues/5011
Best regards, Javier
Javier Martinez Canillas (2): fbdev: Check in file_fb_info() if the fb_info was already been freed fbdev: Make fb_release() return -ENODEV if fbdev was unregistered
drivers/video/fbdev/core/fbmem.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-)
-- 2.35.1
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