ata: fixes kernel crash while tracing ata_eh_link_autopsy event

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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@apm.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Fixes: 255c03d15a ("libata: Add tracepoints")
Cc: stable@vger.kernel.org # v4.1+

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Rameshwar Prasad Sahu 2017-11-02 16:31:07 +05:30 • committed by Tejun Heo

parent e00b19e28c

commit f1601113dd

1 changed files with 1 additions and 1 deletions

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drivers/ata/libata-eh.c

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