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 <wangn...@huawei.com>
Acked-by: Namhyung Kim <namhy...@kernel.org>
---
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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