On Thu, Nov 02, 2017 at 04:31:07PM +0530, Rameshwar Prasad Sahu wrote: > When tracing ata link error event, the kernel crashes when the disk is > removed due to NULL pointer access by trace_ata_eh_link_autopsy API. > This occurs as the dev is NULL when the disk disappeared. This patch > fixes this crash by calling trace_ata_eh_link_autopsy only if "dev" > is not NULL. > > v2 changes: > Removed direct passing "link" pointer instead of "dev" in trace API. > > Signed-off-by: Rameshwar Prasad Sahu <rsahu@xxxxxxx> Applied to libata/for-4.15. Thanks. -- tejun