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Date: Thu, 9 Jul 2015 12:35:33 +0000 From: Wang Nan <wangnan0@...wei.com> To: <acme@...nel.org>, <ast@...mgrid.com> CC: <linux-kernel@...r.kernel.org>, <lizefan@...wei.com>, <hekuang@...wei.com>, <xiakaixu@...wei.com>, <pi3orama@....com> Subject: [PATCH 30/39] perf probe: Reset args and nargs for probe_trace_event when failure When failure occures in add_probe_trace_event(), args in probe_trace_event is incomplete. Since information in it may be used in further, this patch frees the allocated memory and set it to NULL to avoid dangling pointer. Signed-off-by: Wang Nan <wangnan0@...wei.com> --- tools/perf/util/probe-finder.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 2da65a7..f533d19 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -1243,6 +1243,10 @@ static int add_probe_trace_event(Dwarf_Die *sc_die, struct probe_finder *pf) end: free(args); + if (ret) { + tev->nargs = 0; + zfree(&tev->args); + } return ret; } -- 1.8.3.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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