Messages in this thread Patch in this message | | | Date | Sat, 21 Nov 2015 11:23:55 +0100 | From | Jiri Olsa <> | Subject | [PATCH] perf callchain: Add missing parent_val initialization |
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Adding missing parent_val callchain_node initialization. It's causing segfault in perf top:
$ sudo perf top -g perf: Segmentation fault -------- backtrace -------- free_callchain_node(+0x29) in perf [0x4a4b3e] free_callchain(+0x29) in perf [0x4a5a83] hist_entry__delete(+0x126) in perf [0x4c6649] hists__delete_entry(+0x6e) in perf [0x4c66dc] hists__decay_entries(+0x7d) in perf [0x4c6776] perf_top__sort_new_samples(+0x7c) in perf [0x436a78] hist_browser__run(+0xf2) in perf [0x507760] perf_evsel__hists_browse(+0x1da) in perf [0x507c8d] perf_evlist__tui_browse_hists(+0x3e) in perf [0x5088cf] display_thread_tui(+0x7f) in perf [0x437953] start_thread(+0xc5) in libpthread-2.21.so [0x7f7068fbb555] __clone(+0x6d) in libc-2.21.so [0x7f7066fc3b9d] [0x0]
Acked-by: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/n/tip-x001nhduevgcl78ublk9eaiz@git.kernel.org Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- tools/perf/util/callchain.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index 6e9b5f2099e1..8ac8f043004c 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -143,6 +143,7 @@ extern __thread struct callchain_cursor callchain_cursor; static inline void callchain_init(struct callchain_root *root) { INIT_LIST_HEAD(&root->node.val); + INIT_LIST_HEAD(&root->node.parent_val); root->node.parent = NULL; root->node.hit = 0; -- 2.4.3
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