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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>
This commit is contained in:
Li Bin 2020-05-21 21:32:18 +08:00 committed by Arnaldo Carvalho de Melo
parent 07e9a6f538
commit fa99ce8282
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/trace-event-info.c
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@ -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: