queue-4.14/perf-list-don-t-forget-to-drop-the-reference-to-the-.patch

   1 From 0ad0ac2260addf458767c5a573e3b2cce42613a9 Mon Sep 17 00:00:00 2001
   2 From: Changbin Du <changbin.du@gmail.com>
   3 Date: Sat, 16 Mar 2019 16:05:42 +0800
   4 Subject: perf list: Don't forget to drop the reference to the allocated
   5  thread_map
   6
   7 [ Upstream commit 39df730b09774bd860e39ea208a48d15078236cb ]
   8
   9 Detected via gcc's ASan:
  10
  11   Direct leak of 2048 byte(s) in 64 object(s) allocated from:
  12     6     #0 0x7f606512e370 in __interceptor_realloc (/usr/lib/x86_64-linux-gnu/libasan.so.5+0xee370)
  13     7     #1 0x556b0f1d7ddd in thread_map__realloc util/thread_map.c:43
  14     8     #2 0x556b0f1d84c7 in thread_map__new_by_tid util/thread_map.c:85
  15     9     #3 0x556b0f0e045e in is_event_supported util/parse-events.c:2250
  16    10     #4 0x556b0f0e1aa1 in print_hwcache_events util/parse-events.c:2382
  17    11     #5 0x556b0f0e3231 in print_events util/parse-events.c:2514
  18    12     #6 0x556b0ee0a66e in cmd_list /home/changbin/work/linux/tools/perf/builtin-list.c:58
  19    13     #7 0x556b0f01e0ae in run_builtin /home/changbin/work/linux/tools/perf/perf.c:302
  20    14     #8 0x556b0f01e859 in handle_internal_command /home/changbin/work/linux/tools/perf/perf.c:354
  21    15     #9 0x556b0f01edc8 in run_argv /home/changbin/work/linux/tools/perf/perf.c:398
  22    16     #10 0x556b0f01f71f in main /home/changbin/work/linux/tools/perf/perf.c:520
  23    17     #11 0x7f6062ccf09a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
  24
  25 Signed-off-by: Changbin Du <changbin.du@gmail.com>
  26 Reviewed-by: Jiri Olsa <jolsa@kernel.org>
  27 Cc: Alexei Starovoitov <ast@kernel.org>
  28 Cc: Daniel Borkmann <daniel@iogearbox.net>
  29 Cc: Namhyung Kim <namhyung@kernel.org>
  30 Cc: Peter Zijlstra <peterz@infradead.org>
  31 Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
  32 Fixes: 89896051f8da ("perf tools: Do not put a variable sized type not at the end of a struct")
  33 Link: http://lkml.kernel.org/r/20190316080556.3075-3-changbin.du@gmail.com
  34 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
  35 Signed-off-by: Sasha Levin <sashal@kernel.org>
  36 ---
  37  tools/perf/util/parse-events.c | 1 +
  38  1 file changed, 1 insertion(+)
  39
  40 diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
  41 index d0b92d374ba9..ec3517326a68 100644
  42 --- a/tools/perf/util/parse-events.c
  43 +++ b/tools/perf/util/parse-events.c
  44 @@ -2109,6 +2109,7 @@ static bool is_event_supported(u8 type, unsigned config)
  45                 perf_evsel__delete(evsel);
  46         }
  47
  48 +       thread_map__put(tmap);
  49         return ret;
  50  }
  51
  52 --
  53 2.19.1
  54