[PATCH] ext4: Fix memory leak in ext4_ext_shift_extents()

[Zilin Guan]

In ext4_ext_shift_extents(), if the extent is NULL in the while loop, the
function returns immediately without releasing the path obtained via
ext4_find_extent(), leading to a memory leak.

Fix this by jumping to the out label to ensure the path is properly
released.

Fixes: a18ed359bdddc ("ext4: always check ext4_ext_find_extent result")
Signed-off-by: Zilin Guan <zilin@xxxxxxxxxx>
---
 fs/ext4/extents.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 2cf5759ba689..1d21943a09b0 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -5375,7 +5375,8 @@ ext4_ext_shift_extents(struct inode *inode, handle_t *handle,
 		if (!extent) {
 			EXT4_ERROR_INODE(inode, "unexpected hole at %lu",
 					 (unsigned long) *iterator);
-			return -EFSCORRUPTED;
+			ret = -EFSCORRUPTED;
+			goto out;
 		}
 		if (SHIFT == SHIFT_LEFT && *iterator >
 		    le32_to_cpu(extent->ee_block)) {
-- 
2.34.1