Commit-ID: 20914ce5b9e1ef4a35f1f09a2c9c8fb8eb1c4d86 Gitweb: http://git.kernel.org/tip/20914ce5b9e1ef4a35f1f09a2c9c8fb8eb1c4d86 Author: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> AuthorDate: Wed, 19 Dec 2012 10:59:29 -0300 Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> CommitDate: Thu, 24 Jan 2013 16:40:13 -0300 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@xxxxxxxxx> Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Mike Galbraith <efault@xxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxx> Cc: Paul Mackerras <paulus@xxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Stephane Eranian <eranian@xxxxxxxxxx> Cc: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxxxxxxxxx> Link: http://lkml.kernel.org/n/tip-qo2jevp1bdcnh8khzdazs17s@xxxxxxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> --- tools/perf/builtin-kvm.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index ca3f80e..37a769d 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"), -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html