diff options
| author | Song Liu <songliubraving@fb.com> | 2018-04-09 18:31:30 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-04-10 07:33:10 +0200 |
| commit | 0eadcc7a7bc03e991d2da1cf88143fb7cc0342c1 (patch) | |
| tree | f7fad440d2cb2eef58928c8947717a2e9a6132fa /kernel | |
| parent | 5da13ab8b0dcaa984c45ae43edf5a4d148603d42 (diff) | |
perf/core: Fix perf_uprobe_init()
Similarly to the uprobe PMU fix in perf_kprobe_init(), fix error
handling in perf_uprobe_init() as well.
Reported-by: 范龙飞 <long7573@126.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: e12f03d7031a ("perf/core: Implement the 'perf_kprobe' PMU")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_event_perf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/trace/trace_event_perf.c b/kernel/trace/trace_event_perf.c index 94600f1f7efa..c79193e598f5 100644 --- a/kernel/trace/trace_event_perf.c +++ b/kernel/trace/trace_event_perf.c @@ -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') { |