]> git.baikalelectronics.ru Git - kernel.git/commit
perf tools: Fix segfault due to invalid kernel dso access
authorNamhyung Kim <namhyung@kernel.org>
Tue, 18 Nov 2014 04:30:28 +0000 (13:30 +0900)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Mon, 24 Nov 2014 21:03:48 +0000 (18:03 -0300)
commit542e52057ebd67f8f921ced83a5bb299c58aeb22
tree8a4eb078bf0eb523cdf857f0eb829c8d5903de44
parent914e539c43032ffdaa573ca0ffc68c13d04b37b2
perf tools: Fix segfault due to invalid kernel dso access

Jiri reported that the commit f71ac6998770 ("perf tools: Make vmlinux
short name more like kallsyms short name") segfaults on perf script.

When processing kernel mmap event, it should access the 'kernel'
variable as sometimes it cannot find a matching dso from build-id table
so 'dso' might be invalid.

Reported-by: Jiri Olsa <jolsa@redhat.com>
Tested-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1416285028-30572-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/util/machine.c