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| author |   Rameshwar Prasad Sahu <rsahu@apm.com> | 2017-11-02 16:31:07 +0530 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2017-11-03 06:23:06 -0700 |
| commit | f1601113ddc0339a745e702f4fb1ca37d4875e65 (patch) | |
| tree | eb175e33705391c9203cf1b060441ae3531ee3b2 /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | ata: pata_pdc2027x: Fix space before '[' error. (diff) | |
| download | wireguard-linux-f1601113ddc0339a745e702f4fb1ca37d4875e65.tar.xz wireguard-linux-f1601113ddc0339a745e702f4fb1ca37d4875e65.zip | |
ata: fixes kernel crash while tracing ata_eh_link_autopsy event
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: 255c03d15a29 ("libata: Add tracepoints")
Cc: stable@vger.kernel.org # v4.1+
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions