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| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-12-19 17:59:29 +0400 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-01-24 23:40:13 +0400 |
| commit | 20914ce5b9e1ef4a35f1f09a2c9c8fb8eb1c4d86 (patch) | |
| tree | 3467079f6c41505b1541e14f4119afb2dec8a827 /tools/perf/builtin-kvm.c | |
| parent | 34ba5122bf198c9cdfcbecc9b23eaa414244a3f6 (diff) | |
| download | linux-20914ce5b9e1ef4a35f1f09a2c9c8fb8eb1c4d86.tar.xz | |
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>
Diffstat (limited to 'tools/perf/builtin-kvm.c')
| -rw-r--r-- | tools/perf/builtin-kvm.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index ca3f80ebc100..37a769d7f9fe 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"), |