In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Check debug trap enable before write dbg_ev_file In interrupt context, write dbg_ev_file will be run by work queue. It will cause write dbg_ev_file execution after debug_trap_disable, which will cause NULL pointer access. v2: cancel work "debug_event_workarea" before set dbg_ev_file as NULL.
https://git.kernel.org/stable/c/e6ea3b8fe398915338147fe54dd2db8155fdafd8
https://git.kernel.org/stable/c/820dcbd38a77bd5fdc4236d521c1c122841227d0
https://git.kernel.org/stable/c/547033b593063eb85bfdf9b25a5f1b8fd1911be2