From: Stefano Sanfilippo <ssanfili...@chromium.org>
Check the version number when opening a jitdump file.
Accept older versions, but not newer ones.
Signed-off-by: Stefano Sanfilippo <ssanfili...@chromium.org>
Signed-off-by: Ross McIlroy <rmcil...@chromium.org>
Reviewed-by: Stephane Eranian <eran...@google.com>
---
tools/perf/util/jitdump.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/perf/util/jitdump.c b/tools/perf/util/jitdump.c
index c47fba63274b..c5dabb3a81fd 100644
--- a/tools/perf/util/jitdump.c
+++ b/tools/perf/util/jitdump.c
@@ -180,6 +180,12 @@ jit_open(struct jit_buf_desc *jd, const char *name)
header.elf_mach,
jd->use_arch_timestamp);
+ if (header.version > JITHEADER_VERSION) {
+ pr_err("wrong jitdump version %u, expected " STR(JITHEADER_VERSION),
+ header.version);
+ goto error;
+ }
+
if (header.flags & JITDUMP_FLAGS_RESERVED) {
pr_err("jitdump file contains invalid or unsupported flags
0x%llx\n",
(unsigned long long)header.flags &
JITDUMP_FLAGS_RESERVED);
--
1.9.1
