btrfs: fix return value mixup in btrfs_get_extent
commit 881a3a11c2b858fe9b69ef79ac5ee9978a266dc9 upstream
btrfs_get_extent() sets variable ret, but out: error path expect error
to be in variable err so the error code is lost.
Fixes: 6bf9e4bd6a27 ("btrfs: inode: Verify inode mode to avoid NULL pointer dereference")
CC: stable@vger.kernel.org # 5.4+
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Pavel Machek (CIP) <pavel@denx.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
[sudip: adjust context]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 6f8f37e3..4b671e5 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7000,7 +7000,7 @@ struct extent_map *btrfs_get_extent(struct inode *inode, struct page *page,
found_type == BTRFS_FILE_EXTENT_PREALLOC) {
/* Only regular file could have regular/prealloc extent */
if (!S_ISREG(inode->i_mode)) {
- ret = -EUCLEAN;
+ err = -EUCLEAN;
btrfs_crit(root->fs_info,
"regular/prealloc extent found for non-regular inode %llu",
btrfs_ino(inode));