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authorPekka Enberg <penberg@kernel.org>2011-08-09 22:54:18 +0300
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-08-09 15:23:08 -0300
commit981c1252691f4b855f2bb47ea93fb6052ea3aee2 (patch)
tree7cb1acf6cbaf11c1baf3a474c891a4798a8bbcda
parent580cabed88ebc631e740b16010f2fa6ba882652f (diff)
perf symbols: Check '/tmp/perf-' symbol file ownership
The external symbol files are generated by JIT compilers, for example, but we need to make sure they're ours before injecting them to 'perf report'. Requested-by: Ingo Molnar <mingo@elte.hu> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1312919658-17158-1-git-send-email-penberg@kernel.org Signed-off-by: Pekka Enberg <penberg@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
-rw-r--r--tools/perf/util/symbol.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index eec196329fd9..a8b53714542a 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -1504,6 +1504,17 @@ int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter)
dso->adjust_symbols = 0;
if (strncmp(dso->name, "/tmp/perf-", 10) == 0) {
+ struct stat st;
+
+ if (stat(dso->name, &st) < 0)
+ return -1;
+
+ if (st.st_uid && (st.st_uid != geteuid())) {
+ pr_warning("File %s not owned by current user or root, "
+ "ignoring it.\n", dso->name);
+ return -1;
+ }
+
ret = dso__load_perf_map(dso, map, filter);
dso->symtab_type = ret > 0 ? SYMTAB__JAVA_JIT :
SYMTAB__NOT_FOUND;