From: Pekka Enberg Date: Tue, 9 Aug 2011 19:54:18 +0000 (+0300) Subject: perf symbols: Check '/tmp/perf-' symbol file ownership X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=981c1252691f4b855f2bb47ea93fb6052ea3aee2;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git 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 Cc: Frederic Weisbecker Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1312919658-17158-1-git-send-email-penberg@kernel.org Signed-off-by: Pekka Enberg Signed-off-by: Arnaldo Carvalho de Melo --- 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;