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OpenCloudOS-Kernel
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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 <acme@redhat.com>
This commit is contained in:
Arnaldo Carvalho de Melo 2023-04-12 09:50:08 -03:00
parent b20c63084e
commit d729163d06
1 changed files with 2 additions and 2 deletions
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4
tools/perf/util/symbol-elf.c
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@ -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)