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perf/core: Fix perf_uprobe_init()

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Similarly to the uprobe PMU fix in perf_kprobe_init(), fix error
handling in perf_uprobe_init() as well.

Reported-by: 范龙飞 <[email protected]>
Signed-off-by: Song Liu <[email protected]>
Acked-by: Masami Hiramatsu <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Fixes: e12f03d703 ("perf/core: Implement the 'perf_kprobe' PMU")
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Song Liu authored and Ingo Molnar committed 2018-04-10 07:33:10 +02:00
1 parent 5da13ab8b0
commit 0eadcc7a7b
1 file changed
+2
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kernel/trace/trace_event_perf.c
+2
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@@ -302,6 +302,8 @@ int perf_uprobe_init(struct perf_event *p_event, bool is_retprobe)
return -ENOMEM;
ret = strncpy_from_user(
path, u64_to_user_ptr(p_event->attr.uprobe_path), PATH_MAX);
if (ret == PATH_MAX)
return -E2BIG;
if (ret < 0)
goto out;
if (path[0] == '\0') {