From d729163d0641d8b4c50fdca1b2b9d5d24d9d376d Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 12 Apr 2023 09:50:08 -0300 Subject: perf symbol: Use zfree() to reduce chances of use after free Do defensive programming by using zfree() to initialize freed pointers to NULL, so that eventual use after free result in a NULL pointer deref instead of more subtle behaviour. Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/symbol-elf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools') diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c index c55981116f68..35724f6a84fa 100644 --- a/tools/perf/util/symbol-elf.c +++ b/tools/perf/util/symbol-elf.c @@ -396,7 +396,7 @@ static bool get_ifunc_name(Elf *elf, struct dso *dso, GElf_Ehdr *ehdr, static void exit_rel(struct rel_info *ri) { - free(ri->sorted); + zfree(&ri->sorted); } static bool get_plt_sizes(struct dso *dso, GElf_Ehdr *ehdr, GElf_Shdr *shdr_plt, @@ -460,7 +460,7 @@ struct rela_dyn_info { static void exit_rela_dyn(struct rela_dyn_info *di) { - free(di->sorted); + zfree(&di->sorted); } static int cmp_offset(const void *a, const void *b) -- cgit v1.2.3