From fa99ce828291cbbf8782284665365bc2c48e9318 Mon Sep 17 00:00:00 2001
From: Li Bin <huawei.libin@huawei.com>
Date: Thu, 21 May 2020 21:32:18 +0800
Subject: [PATCH] perf util: Fix potential SEGFAULT in put_tracepoints_path
 error path

This patch fix potential segment fault triggered in
put_tracepoints_path() when the address of the local variable 'path' be
freed in error path of record_saved_cmdline.

Signed-off-by: Li Bin <huawei.libin@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hongbo Yao <yaohongbo@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Xie XiuQi <xiexiuqi@huawei.com>
Link: http://lore.kernel.org/lkml/20200521133218.30150-5-liwei391@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/util/trace-event-info.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c
index 086e98f..0e5c478 100644
--- a/tools/perf/util/trace-event-info.c
+++ b/tools/perf/util/trace-event-info.c
@@ -428,7 +428,7 @@ try_id:
 		if (!ppath->next) {
 error:
 			pr_debug("No memory to alloc tracepoints list\n");
-			put_tracepoints_path(&path);
+			put_tracepoints_path(path.next);
 			return NULL;
 		}
 next:
-- 
2.7.4