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> Cc: Anton Blanchard <an...@ozlabs.org> Cc: Jiri Olsa <jo...@redhat.com> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Link: http://lkml.kernel.org/r/1476356383-30100-9-git-send-email-eran...@google.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.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 6a2688da3c4a..c9a941ef0f6d 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); -- 2.7.4
