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authorArnaldo Carvalho de Melo <acme@redhat.com>2012-12-19 10:59:29 -0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-01-24 16:40:13 -0300
commit20914ce5b9e1ef4a35f1f09a2c9c8fb8eb1c4d86 (patch)
tree3467079f6c41505b1541e14f4119afb2dec8a827
parent34ba5122bf198c9cdfcbecc9b23eaa414244a3f6 (diff)
perf kvm: Initialize file_name var to fix segfault
The 3786063 commit: perf kvm: Rename perf_kvm to perf_kvm_stat Moved the file_name from inside a local struct var that initialized some of its members, thus zero initializing the not explicitely initialized variables, one of which was 'file_name', to a standalone local variable, but forgot to initialize it explicitely to NULL, so it then got some undefined value, causing a segfault in strdup when it wasn't, by luck, zero. Fix it by explicitely initializing it to NULL. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Link: http://lkml.kernel.org/n/tip-qo2jevp1bdcnh8khzdazs17s@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/builtin-kvm.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c
index ca3f80ebc10..37a769d7f9f 100644
--- a/tools/perf/builtin-kvm.c
+++ b/tools/perf/builtin-kvm.c
@@ -973,8 +973,7 @@ __cmd_buildid_list(const char *file_name, int argc, const char **argv)
int cmd_kvm(int argc, const char **argv, const char *prefix __maybe_unused)
{
- const char *file_name;
-
+ const char *file_name = NULL;
const struct option kvm_options[] = {
OPT_STRING('i', "input", &file_name, "file",
"Input file name"),