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(parent: 203873a) | patch
fbdev: nvidia: Fix potential divide by zero
authorWei Chen <harperchen1110@gmail.com>
Wed, 15 Mar 2023 07:18:31 +0000 (07:18 +0000)
committerHelge Deller <deller@gmx.de>
Thu, 16 Mar 2023 15:18:16 +0000 (16:18 +0100)
commit92e2a00f2987483e1f9253625828622edd442e61
tree6971a1c426ed3bb0ed763873a7fe2c6df0274dc6tree | snapshot
parent203873a535d627c668f293be0cb73e26c30f9cc7commit | diff
fbdev: nvidia: Fix potential divide by zero

variable var->pixclock can be set by user. In case it
equals to zero, divide by zero would occur in nvidiafb_set_par.

Similar crashes have happened in other fbdev drivers. There
is no check and modification on var->pixclock along the call
chain to nvidia_check_var and nvidiafb_set_par. We believe it
could also be triggered in driver nvidia from user site.

Signed-off-by: Wei Chen <harperchen1110@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
drivers/video/fbdev/nvidia/nvidia.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git