tracing: Fix return while holding a lock in register_tracer()

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commit d39cdd2036 ("tracing: Make tracer_flags use the right set_flag
callback")  introduces a potential mutex deadlock issue, as it forgets to
free the mutex when allocaing the tracer_flags gets fail.

The issue was found by Dan Carpenter through Smatch static code check tool.

Link: http://lkml.kernel.org/r/1457958941-30265-1-git-send-email-chuhu@redhat.com

Fixes: d39cdd2036 ("tracing: Make tracer_flags use the right set_flag callback")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Chunyu Hu <chuhu@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

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Chunyu Hu 2016-03-14 20:35:41 +08:00 • committed by Steven Rostedt

parent 6363c6b599

commit c8ca003b2f

1 changed files with 4 additions and 2 deletions

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kernel/trace/trace.c

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