From d7cf4188e2e85faa00552b8616db31a17844df1b Mon Sep 17 00:00:00 2001 From: Andrzej Hunt Date: Sun, 25 Jul 2021 15:08:24 +0200 Subject: ref-filter: also free head for ATOM_HEAD to avoid leak u.head is populated using resolve_refdup(), which returns a newly allocated string - hence we also need to free() it. Found while running t0041 with LSAN: Direct leak of 16 byte(s) in 1 object(s) allocated from: #0 0x486804 in strdup ../projects/compiler-rt/lib/asan/asan_interceptors.cpp:452:3 #1 0xa8be98 in xstrdup wrapper.c:29:14 #2 0x9481db in head_atom_parser ref-filter.c:549:17 #3 0x9408c7 in parse_ref_filter_atom ref-filter.c:703:30 #4 0x9400e3 in verify_ref_format ref-filter.c:974:8 #5 0x4f9e8b in print_ref_list builtin/branch.c:439:6 #6 0x4f9e8b in cmd_branch builtin/branch.c:757:3 #7 0x4ce83e in run_builtin git.c:475:11 #8 0x4ccafe in handle_builtin git.c:729:3 #9 0x4cb01c in run_argv git.c:818:4 #10 0x4cb01c in cmd_main git.c:949:19 #11 0x6bdc2d in main common-main.c:52:11 #12 0x7f96edf86349 in __libc_start_main (/lib64/libc.so.6+0x24349) SUMMARY: AddressSanitizer: 16 byte(s) leaked in 1 allocation(s). Signed-off-by: Andrzej Hunt Signed-off-by: Junio C Hamano --- ref-filter.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/ref-filter.c b/ref-filter.c index 4db0e40ff4..f8bfd25ae4 100644 --- a/ref-filter.c +++ b/ref-filter.c @@ -2225,8 +2225,12 @@ void ref_array_clear(struct ref_array *array) FREE_AND_NULL(array->items); array->nr = array->alloc = 0; - for (i = 0; i < used_atom_cnt; i++) - free((char *)used_atom[i].name); + for (i = 0; i < used_atom_cnt; i++) { + struct used_atom *atom = &used_atom[i]; + if (atom->atom_type == ATOM_HEAD) + free(atom->u.head); + free((char *)atom->name); + } FREE_AND_NULL(used_atom); used_atom_cnt = 0; -- cgit v1.2.3