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| author | Dinghao Liu <[email protected]> | 2023-09-25 08:08:44 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2023-09-25 09:53:40 +0000 |
| commit | f4dcf06bc6e0161920b700ba3966411d716a321b (patch) | |
| tree | e400fa83eb6831cdc763de6c41a942afb3d4547c /drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | |
| parent | Linux 6.6-rc3 (diff) | |
| download | kernel-f4dcf06bc6e0161920b700ba3966411d716a321b.tar.gz kernel-f4dcf06bc6e0161920b700ba3966411d716a321b.zip | |
ACPI: video: Fix NULL pointer dereference in acpi_video_bus_add()
acpi_video_bus_add_notify_handler() could free video->input and
set it to NULL on failure, but this failure would be missed in its
caller acpi_video_bus_add(). As a result, when an error happens in
acpi_dev_install_notify_handler(), acpi_video_bus_add() would call
acpi_video_bus_remove_notify_handler(), where a potential NULL pointer
video->input is dereferenced in input_unregister_device().
Fix this by adding a return value check and adjusting the following
error handling code.
Fixes: 6f7016819766 ("ACPI: video: Install Notify() handler directly")
Signed-off-by: Dinghao Liu <[email protected]>
[ rjw: Subject and changelog edits ]
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
0 files changed, 0 insertions, 0 deletions