diff options
| author | Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> | 2014-05-29 19:52:32 +0900 |
|---|---|---|
| committer | Jiri Olsa <jolsa@kernel.org> | 2014-06-04 14:48:03 +0200 |
| commit | 0c188a07b6a399e3df66534c29fef0a2082aaf57 (patch) | |
| tree | 92bff0e3cf97bc39d62909786d692a40941aea91 /tools/perf/util/dwarf-aux.c | |
| parent | b69cf53640da2b86439596118cfa95233154ee76 (diff) | |
| download | lwn-0c188a07b6a399e3df66534c29fef0a2082aaf57.tar.gz lwn-0c188a07b6a399e3df66534c29fef0a2082aaf57.zip | |
perf probe: Fix a segfault if asked for variable it doesn't find
Fix a segfault bug by asking for variable it doesn't find.
Since the convert_variable() didn't handle error code returned
from convert_variable_location(), it just passed an incomplete
variable field and then a segfault was occurred when formatting
the field.
This fixes that bug by handling success code correctly in
convert_variable(). Other callers of convert_variable_location()
are correctly checking the return code.
This bug was introduced by following commit. But another hidden
erroneous error handling has been there previously (-ENOMEM case).
commit 3d918a12a1b3088ac16ff37fa52760639d6e2403
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/20140529105232.28251.30447.stgit@ltc230.yrl.intra.hitachi.co.jp
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Diffstat (limited to 'tools/perf/util/dwarf-aux.c')
0 files changed, 0 insertions, 0 deletions