From 4c217a4c34be29aee4aac402eed668438e8d21a4 Mon Sep 17 00:00:00 2001 From: Andrzej Hunt Date: Sun, 25 Apr 2021 14:16:10 +0000 Subject: ls-files: free max_prefix when done common_prefix() returns a new string, which we store in max_prefix - this string needs to be freed to avoid a leak. This leak is happening in cmd_ls_files, hence is of no real consequence - an UNLEAK would be just as good, but we might as well free the string properly. Leak found while running t0002, see output below: Direct leak of 8 byte(s) in 1 object(s) allocated from: #0 0x49a85d in malloc /home/abuild/rpmbuild/BUILD/llvm-11.0.0.src/build/../projects/compiler-rt/lib/asan/asan_malloc_linux.cpp:145:3 #1 0x9ab1b4 in do_xmalloc wrapper.c:41:8 #2 0x9ab248 in do_xmallocz wrapper.c:75:8 #3 0x9ab22a in xmallocz wrapper.c:83:9 #4 0x9ab2d7 in xmemdupz wrapper.c:99:16 #5 0x78d6a4 in common_prefix dir.c:191:15 #6 0x5aca48 in cmd_ls_files builtin/ls-files.c:669:16 #7 0x4cd92d in run_builtin git.c:453:11 #8 0x4cb5fa in handle_builtin git.c:704:3 #9 0x4ccf57 in run_argv git.c:771:4 #10 0x4caf49 in cmd_main git.c:902:19 #11 0x69ce2e in main common-main.c:52:11 #12 0x7f64d4d94349 in __libc_start_main (/lib64/libc.so.6+0x24349) Signed-off-by: Andrzej Hunt Signed-off-by: Junio C Hamano --- builtin/ls-files.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/builtin/ls-files.c b/builtin/ls-files.c index f6f9e483b2..7d1ac1eb1e 100644 --- a/builtin/ls-files.c +++ b/builtin/ls-files.c @@ -530,7 +530,7 @@ static int option_parse_exclude_standard(const struct option *opt, int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix) { int require_work_tree = 0, show_tag = 0, i; - const char *max_prefix; + char *max_prefix; struct dir_struct dir; struct pattern_list *pl; struct string_list exclude_list = STRING_LIST_INIT_NODUP; @@ -708,5 +708,6 @@ int cmd_ls_files(int argc, const char **argv, const char *cmd_prefix) } dir_clear(&dir); + free(max_prefix); return 0; } -- cgit v1.2.3