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tracing/kprobe: Release kprobe print_fmt properly

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We don't release tk->tp.call.print_fmt when destroying
local uprobe. Also there's missing print_fmt kfree in
create_local_trace_kprobe error path.

Link: http://lkml.kernel.org/r/[email protected]

Cc: [email protected]
Fixes: e12f03d703 ("perf/core: Implement the 'perf_kprobe' PMU")
Acked-by: Song Liu <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
Signed-off-by: Steven Rostedt (VMware) <[email protected]>
This commit is contained in:
Jiri Olsa 2018-07-09 16:19:06 +02:00 • committed by Steven Rostedt (VMware)
commit 0fc8c3581d
1 changed files with 5 additions and 1 deletions
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6
kernel/trace/trace_kprobe.c
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@ -1480,8 +1480,10 @@ create_local_trace_kprobe(char *func, void *addr, unsigned long offs,
}
ret = __register_trace_kprobe(tk);
if (ret < 0)
if (ret < 0) {
kfree(tk->tp.call.print_fmt);
goto error;
}
return &tk->tp.call;
error:
@ -1501,6 +1503,8 @@ void destroy_local_trace_kprobe(struct trace_event_call *event_call)
}
__unregister_trace_kprobe(tk);
kfree(tk->tp.call.print_fmt);
free_trace_kprobe(tk);
}
#endif /* CONFIG_PERF_EVENTS */