From: "Andrzej Hunt via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Andrzej Hunt <andrzej@ahunt.org>, Andrzej Hunt <ajrhunt@google.com>
Subject: [PATCH 1/7] symbolic-ref: don't leak shortened refname in check_symref()
Date: Mon, 08 Mar 2021 18:36:14 +0000 [thread overview]
Message-ID: <ff0f7c167fa5b5da2d843fa03edb70907e6af763.1615228580.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.899.git.1615228580.gitgitgadget@gmail.com>
From: Andrzej Hunt <ajrhunt@google.com>
This leak has existed since:
9ab55daa55 (git symbolic-ref --delete $symref, 2012-10-21)
This leak was found when running t0001 with LSAN, see also LSAN output
below:
Direct leak of 19 byte(s) in 1 object(s) allocated from:
#0 0x486514 in strdup /home/abuild/rpmbuild/BUILD/llvm-11.0.0.src/build/../projects/compiler-rt/lib/asan/asan_interceptors.cpp:452:3
#1 0x9ab048 in xstrdup /home/ahunt/oss-fuzz/git/wrapper.c:29:14
#2 0x8b452f in refs_shorten_unambiguous_ref /home/ahunt/oss-fuzz/git/refs.c
#3 0x8b47e8 in shorten_unambiguous_ref /home/ahunt/oss-fuzz/git/refs.c:1287:9
#4 0x679fce in check_symref /home/ahunt/oss-fuzz/git/builtin/symbolic-ref.c:28:14
#5 0x679ad8 in cmd_symbolic_ref /home/ahunt/oss-fuzz/git/builtin/symbolic-ref.c:70:9
#6 0x4cd60d in run_builtin /home/ahunt/oss-fuzz/git/git.c:453:11
#7 0x4cb2da in handle_builtin /home/ahunt/oss-fuzz/git/git.c:704:3
#8 0x4ccc37 in run_argv /home/ahunt/oss-fuzz/git/git.c:771:4
#9 0x4cac29 in cmd_main /home/ahunt/oss-fuzz/git/git.c:902:19
#10 0x69cc6e in main /home/ahunt/oss-fuzz/git/common-main.c:52:11
#11 0x7f98388a4349 in __libc_start_main (/lib64/libc.so.6+0x24349)
Signed-off-by: Andrzej Hunt <ajrhunt@google.com>
---
builtin/symbolic-ref.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/builtin/symbolic-ref.c b/builtin/symbolic-ref.c
index 80237f0df10f..8cf52599693a 100644
--- a/builtin/symbolic-ref.c
+++ b/builtin/symbolic-ref.c
@@ -24,9 +24,15 @@ static int check_symref(const char *HEAD, int quiet, int shorten, int print)
return 1;
}
if (print) {
- if (shorten)
- refname = shorten_unambiguous_ref(refname, 0);
- puts(refname);
+ if (shorten) {
+ const char *shortened_refname;
+
+ shortened_refname = shorten_unambiguous_ref(refname, 0);
+ puts(shortened_refname);
+ free((void *)shortened_refname);
+ } else {
+ puts(refname);
+ }
}
return 0;
}
--
gitgitgadget
next prev parent reply other threads:[~2021-03-08 18:37 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-08 18:36 [PATCH 0/7] Fix all leaks in t0001 Andrzej Hunt via GitGitGadget
2021-03-08 18:36 ` Andrzej Hunt via GitGitGadget [this message]
2021-03-08 19:01 ` [PATCH 1/7] symbolic-ref: don't leak shortened refname in check_symref() Jeff King
2021-03-14 18:07 ` Andrzej Hunt
2021-03-08 18:36 ` [PATCH 2/7] reset: free instead of leaking unneeded ref Andrzej Hunt via GitGitGadget
2021-03-08 19:03 ` Jeff King
2021-03-08 18:36 ` [PATCH 3/7] clone: free or UNLEAK further pointers when finished Andrzej Hunt via GitGitGadget
2021-03-08 19:12 ` Jeff King
2021-03-14 16:56 ` Andrzej Hunt
2021-03-08 18:36 ` [PATCH 4/7] worktree: fix leak in dwim_branch() Andrzej Hunt via GitGitGadget
2021-03-08 19:16 ` Jeff King
2021-03-14 17:56 ` Andrzej Hunt
2021-03-08 18:36 ` [PATCH 5/7] init: remove git_init_db_config() while fixing leaks Andrzej Hunt via GitGitGadget
2021-03-08 19:29 ` Jeff King
2021-03-08 18:36 ` [PATCH 6/7] init-db: silence template_dir leak when converting to absolute path Andrzej Hunt via GitGitGadget
2021-03-08 19:30 ` Jeff King
2021-03-08 18:36 ` [PATCH 7/7] parse-options: don't leak alias help messages Andrzej Hunt via GitGitGadget
2021-03-08 19:46 ` Jeff King
2021-03-14 17:03 ` Andrzej Hunt
2021-03-08 18:55 ` [PATCH 0/7] Fix all leaks in t0001 Jeff King
2021-03-12 23:42 ` Junio C Hamano
2021-03-14 16:54 ` Andrzej Hunt
2021-03-15 16:23 ` Andrzej Hunt
2021-03-08 18:57 ` Junio C Hamano
2021-03-14 16:55 ` Andrzej Hunt
2021-03-14 18:47 ` [PATCH v2 0/9] " Andrzej Hunt via GitGitGadget
2021-03-14 18:47 ` [PATCH v2 1/9] symbolic-ref: don't leak shortened refname in check_symref() Andrzej Hunt via GitGitGadget
2021-03-14 18:47 ` [PATCH v2 2/9] reset: free instead of leaking unneeded ref Andrzej Hunt via GitGitGadget
2021-03-14 18:47 ` [PATCH v2 3/9] clone: free or UNLEAK further pointers when finished Andrzej Hunt via GitGitGadget
2021-03-14 18:47 ` [PATCH v2 4/9] worktree: fix leak in dwim_branch() Andrzej Hunt via GitGitGadget
2021-03-14 18:47 ` [PATCH v2 5/9] init: remove git_init_db_config() while fixing leaks Andrzej Hunt via GitGitGadget
2021-03-14 18:47 ` [PATCH v2 6/9] init-db: silence template_dir leak when converting to absolute path Andrzej Hunt via GitGitGadget
2021-03-14 18:47 ` [PATCH v2 7/9] parse-options: convert bitfield values to use binary shift Andrzej Hunt via GitGitGadget
2021-03-14 20:25 ` Martin Ågren
2021-03-14 22:57 ` Junio C Hamano
2021-03-15 16:20 ` Andrzej Hunt
2021-03-14 18:47 ` [PATCH v2 8/9] parse-options: don't leak alias help messages Andrzej Hunt via GitGitGadget
2021-03-14 19:48 ` Eric Sunshine
2021-03-15 16:20 ` Andrzej Hunt
2021-03-14 20:00 ` Andrzej Hunt
2021-03-14 18:47 ` [PATCH v2 9/9] transport: also free remote_refs in transport_disconnect() Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 0/9] Fix all leaks in t0001 Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 1/9] symbolic-ref: don't leak shortened refname in check_symref() Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 2/9] reset: free instead of leaking unneeded ref Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 3/9] clone: free or UNLEAK further pointers when finished Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 4/9] worktree: fix leak in dwim_branch() Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 5/9] init: remove git_init_db_config() while fixing leaks Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 6/9] init-db: silence template_dir leak when converting to absolute path Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 7/9] parse-options: convert bitfield values to use binary shift Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 8/9] parse-options: don't leak alias help messages Andrzej Hunt via GitGitGadget
2021-03-21 16:58 ` [PATCH v3 9/9] transport: also free remote_refs in transport_disconnect() Andrzej Hunt via GitGitGadget
2021-03-21 21:40 ` [PATCH v3 0/9] Fix all leaks in t0001 Junio C Hamano
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