From c0b4dffbc529244d3e4e3bd392f2bffa2d8531a7 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 24 Aug 2015 13:33:14 -0300 Subject: perf annotate: Reset the dso find_symbol cache when removing symbols The 'annotate' tool does some filtering in the entries in a DSO but forgot to reset the cache done in dso__find_symbol(), cauxing a SEGV: [root@zoo ~]# perf annotate netlink_poll perf: Segmentation fault -------- backtrace -------- perf[0x526ceb] /lib64/libc.so.6(+0x34960)[0x7faedfbe0960] perf(rb_erase+0x223)[0x499d63] perf[0x4213e9] perf[0x4bc123] perf[0x4bc621] perf[0x4bf26b] perf[0x4bc855] perf(perf_session__process_events+0x340)[0x4bddc0] perf(cmd_annotate+0x6bb)[0x421b5b] perf[0x479063] perf(main+0x60a)[0x42098a] /lib64/libc.so.6(__libc_start_main+0xf0)[0x7faedfbcbfe0] perf[0x420aa9] [0x0] [root@zoo ~]# Fix it by reseting the find cache when removing symbols. Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Fixes: b685ac22b436 ("perf symbols: Add front end cache for DSO symbol lookup") Link: http://lkml.kernel.org/n/tip-b2y9x46y0t8yem1ive41zqyp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-annotate.c | 1 + 1 file changed, 1 insertion(+) (limited to 'tools/perf/builtin-annotate.c') diff --git a/tools/perf/builtin-annotate.c b/tools/perf/builtin-annotate.c index a32a64ef08e2..8edc205ff9a7 100644 --- a/tools/perf/builtin-annotate.c +++ b/tools/perf/builtin-annotate.c @@ -67,6 +67,7 @@ static int perf_evsel__add_sample(struct perf_evsel *evsel, rb_erase(&al->sym->rb_node, &al->map->dso->symbols[al->map->type]); symbol__delete(al->sym); + dso__reset_find_symbol_cache(al->map->dso); } return 0; } -- cgit v1.2.3