btrfs-progs: string-table: fix memory leak on exit path in table_vprintf

(cherry picked from commit 7383db26a060433a992286b56a36d242952c1b00)

0003-fix-memory-leak-on-exit-path-in-table-vprintf.patch

@@ -0,0 +1,35 @@
+From 9c156ab9ca53e5fc15730a10d1773da04ea59d4d Mon Sep 17 00:00:00 2001
+From: David Sterba <dsterba@suse.com>
+Date: Wed, 3 Apr 2024 23:13:54 +0200
+Subject: [PATCH] btrfs-progs: string-table: fix memory leak on exit path in
+ table_vprintf()
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Reported by 'gcc -fanalyzer:
+common/string-table.c:62:17: warning: leak of ‘msg’ [CWE-401] [-Wanalyzer-malloc-leak]
+
+The 'msg' still allocated when returning from the function due to error,
+free it.
+
+Signed-off-by: David Sterba <dsterba@suse.com>
+---
+ common/string-table.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/common/string-table.c b/common/string-table.c
+index 298066c..6d941fa 100644
+--- a/common/string-table.c
++++ b/common/string-table.c
+@@ -57,6 +57,7 @@ char *table_vprintf(struct string_table *tab, unsigned int column, unsigned int
+ 		return NULL;
+ 
+ 	if (column >= tab->ncols || row >= tab->nrows) {
++		free(msg);
+ 		error("attempt to write outside of table: col %u row %u fmt %s",
+ 			column, row, fmt);
+ 		return NULL;
+-- 
+2.33.0
+

btrfs-progs.spec

@@ -1,6 +1,6 @@
 Name:       btrfs-progs
 Version:    6.6.3
-Release:    3
+Release:    4
 Summary:    btrfs userspace programs
 License:    GPLv2 and GPL+ and LGPL-2.1+ and GPL-3.0+ and LGPL-2.1 and MIT
 URL:        https://btrfs.wiki.kernel.org/index.php/Main_Page
@@ -8,6 +8,7 @@ Source0:    https://www.kernel.org/pub/linux/kernel/people/kdave/%{name}/%{name}
 
 Patch0001:  0001-fix-exclusive-op-enqueue-timeout.patch
 Patch0002:  0002-subvolume-fix-return-value-when-the-target-exists.patch
+Patch0003:  0003-fix-memory-leak-on-exit-path-in-table-vprintf.patch
 
 BuildRequires:  python3-devel >= 3.4
 BuildRequires:  libacl-devel, e2fsprogs-devel, libblkid-devel, libuuid-devel, zlib-devel, libzstd-devel, lzo-devel, systemd-devel
@@ -73,6 +74,9 @@ make mandir=%{_mandir} bindir=%{_sbindir} libdir=%{_libdir} incdir=%{_includedir
 %{_mandir}/man8/*.gz
 
 %changelog
+* Wed May 22 2024 Deyuan Fan <fandeyuan@kylinos.cn> - 6.6.3-4
+- btrfs-progs: string-table: fix memory leak on exit path in table_vprintf()
+
 * Wed May 8 2024 Deyuan Fan <fandeyuan@kylinos.cn> - 6.6.3-3
 - btrfs-progs: subvolume: fix return value when the target exists