Commit-ID: 6760d77b708571b925e2dd2b61f847cbee6e0f21 Gitweb: http://git.kernel.org/tip/6760d77b708571b925e2dd2b61f847cbee6e0f21 Author: Stefano Sanfilippo <[email protected]> AuthorDate: Thu, 13 Oct 2016 03:59:42 -0700 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Mon, 24 Oct 2016 11:07:40 -0300
perf jit: Check JITHEADER_VERSION Check the version number when opening a jitdump file. Accept older versions, but not newer ones. Signed-off-by: Stefano Sanfilippo <[email protected]> Signed-off-by: Ross McIlroy <[email protected]> Reviewed-by: Stephane Eranian <[email protected]> Cc: Anton Blanchard <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- 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 6a2688d..c9a941e 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);
