[PATCH v6 17/19] receive-pack: free() the "ref_name" in "struct command"

From: "Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
To: git@vger.kernel.org
Cc: "René Scharfe" <l.s.r@web.de>,
	"Junio C Hamano" <gitster@pobox.com>,
	"Eric Sunshine" <sunshine@sunshineco.com>,
	"Elijah Newren" <newren@gmail.com>,
	"Ævar Arnfjörð Bjarmason" <avarab@gmail.com>
Subject: [PATCH v6 17/19] receive-pack: free() the "ref_name" in "struct command"
Date: Thu,  2 Feb 2023 10:52:48 +0100	[thread overview]
Message-ID: <patch-v6-17.19-4b2db91f5cb-20230202T094704Z-avarab@gmail.com> (raw)
In-Reply-To: <cover-v6-00.19-00000000000-20230202T094704Z-avarab@gmail.com>

Fix a memory leak that's been with us since this code was introduced
in 575f497456e (Add first cut at "git-receive-pack", 2005-06-29). See
eb1af2df0b1 (git-receive-pack: start parsing ref update commands,
2005-06-29) for the later change that refactored the code to add the
"ref_name" member.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
---
 builtin/receive-pack.c                 | 10 ++++++++++
 t/t5405-send-pack-rewind.sh            |  1 +
 t/t5406-remote-rejects.sh              |  1 +
 t/t5507-remote-environment.sh          |  2 ++
 t/t5522-pull-symlink.sh                |  1 +
 t/t5527-fetch-odd-refs.sh              |  1 +
 t/t5560-http-backend-noserver.sh       |  1 +
 t/t5561-http-backend.sh                |  1 +
 t/t5562-http-backend-content-length.sh |  2 ++
 t/t5705-session-id-in-capabilities.sh  |  1 +
 10 files changed, 21 insertions(+)

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index a90af303630..451bad776c6 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -2032,6 +2032,15 @@ static struct command **queue_command(struct command **tail,
 	return &cmd->next;
 }
 
+static void free_commands(struct command *commands)
+{
+	while (commands) {
+		struct command *next = commands->next;
+		free(commands);
+		commands = next;
+	}
+}
+
 static void queue_commands_from_cert(struct command **tail,
 				     struct strbuf *push_cert)
 {
@@ -2569,6 +2578,7 @@ int cmd_receive_pack(int argc, const char **argv, const char *prefix)
 		run_receive_hook(commands, "post-receive", 1,
 				 &push_options);
 		run_update_post_hook(commands);
+		free_commands(commands);
 		string_list_clear(&push_options, 0);
 		if (auto_gc) {
 			struct child_process proc = CHILD_PROCESS_INIT;
diff --git a/t/t5405-send-pack-rewind.sh b/t/t5405-send-pack-rewind.sh
index 11f03239a06..1686ac13aa6 100755
--- a/t/t5405-send-pack-rewind.sh
+++ b/t/t5405-send-pack-rewind.sh
@@ -5,6 +5,7 @@ test_description='forced push to replace commit we do not have'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success setup '
diff --git a/t/t5406-remote-rejects.sh b/t/t5406-remote-rejects.sh
index dcbeb420827..d6a99466338 100755
--- a/t/t5406-remote-rejects.sh
+++ b/t/t5406-remote-rejects.sh
@@ -2,6 +2,7 @@
 
 test_description='remote push rejects are reported by client'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'setup' '
diff --git a/t/t5507-remote-environment.sh b/t/t5507-remote-environment.sh
index e6149295b18..c6a6957c500 100755
--- a/t/t5507-remote-environment.sh
+++ b/t/t5507-remote-environment.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='check environment showed to remote side of transports'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_expect_success 'set up "remote" push situation' '
diff --git a/t/t5522-pull-symlink.sh b/t/t5522-pull-symlink.sh
index bcff460d0a2..394bc60cb8e 100755
--- a/t/t5522-pull-symlink.sh
+++ b/t/t5522-pull-symlink.sh
@@ -2,6 +2,7 @@
 
 test_description='pulling from symlinked subdir'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 # The scenario we are building:
diff --git a/t/t5527-fetch-odd-refs.sh b/t/t5527-fetch-odd-refs.sh
index e2770e4541f..98ece27c6a0 100755
--- a/t/t5527-fetch-odd-refs.sh
+++ b/t/t5527-fetch-odd-refs.sh
@@ -4,6 +4,7 @@ test_description='test fetching of oddly-named refs'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 # afterwards we will have:
diff --git a/t/t5560-http-backend-noserver.sh b/t/t5560-http-backend-noserver.sh
index d30cf4f5b83..f75068de648 100755
--- a/t/t5560-http-backend-noserver.sh
+++ b/t/t5560-http-backend-noserver.sh
@@ -4,6 +4,7 @@ test_description='test git-http-backend-noserver'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 HTTPD_DOCUMENT_ROOT_PATH="$TRASH_DIRECTORY"
diff --git a/t/t5561-http-backend.sh b/t/t5561-http-backend.sh
index 9c57d843152..e1d3b8caed0 100755
--- a/t/t5561-http-backend.sh
+++ b/t/t5561-http-backend.sh
@@ -4,6 +4,7 @@ test_description='test git-http-backend'
 GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
 export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-httpd.sh
 
diff --git a/t/t5562-http-backend-content-length.sh b/t/t5562-http-backend-content-length.sh
index b68ec22d3fd..7ee9858a78b 100755
--- a/t/t5562-http-backend-content-length.sh
+++ b/t/t5562-http-backend-content-length.sh
@@ -1,6 +1,8 @@
 #!/bin/sh
 
 test_description='test git-http-backend respects CONTENT_LENGTH'
+
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 test_lazy_prereq GZIP 'gzip --version'
diff --git a/t/t5705-session-id-in-capabilities.sh b/t/t5705-session-id-in-capabilities.sh
index ed38c76c290..b8a722ec27e 100755
--- a/t/t5705-session-id-in-capabilities.sh
+++ b/t/t5705-session-id-in-capabilities.sh
@@ -2,6 +2,7 @@
 
 test_description='session ID in capabilities'
 
+TEST_PASSES_SANITIZE_LEAK=true
 . ./test-lib.sh
 
 REPO="$(pwd)/repo"
-- 
2.39.1.1392.g63e6d408230

