Messages in this thread Patch in this message | | | From | Wang Nan <> | Subject | [PATCH] tools perf: set vmlinux_path__nr_entries to 0 in vmlinux_path__exit. | Date | Thu, 14 May 2015 12:22:30 +0000 |
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Original vmlinux_path__exit() doesn't revert vmlinux_path__nr_entries to its original state. After the while loop vmlinux_path__nr_entries becomes -1 instead of 0. This makes a problem that, if runs twice, during the second run vmlinux_path__init() will set vmlinux_path[-1] to strdup("vmlinux"), corrupts random memory.
This patch reset vmlinux_path__nr_entries to 0 after the while loop.
Signed-off-by: Wang Nan <wangnan0@huawei.com> --- tools/perf/util/symbol.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 201f6c4c..451777f 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1802,6 +1802,7 @@ static void vmlinux_path__exit(void) { while (--vmlinux_path__nr_entries >= 0) zfree(&vmlinux_path[vmlinux_path__nr_entries]); + vmlinux_path__nr_entries = 0; zfree(&vmlinux_path); } -- 1.8.3.4
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