linux-kernel - [PATCH 4.5 096/101] Btrfs: fix invalid reference in replace

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Message-Id: <20160517011510.221013055@linuxfoundation.org>
Date:	Mon, 16 May 2016 18:21:41 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Dan Carpenter <dan.carpenter@...cle.com>,
	Liu Bo <bo.li.liu@...cle.com>, David Sterba <dsterba@...e.com>
Subject: [PATCH 4.5 096/101] Btrfs: fix invalid reference in replace_path

4.5-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Liu Bo <bo.li.liu@...cle.com>

commit 264813acb1c756aebc337b16b832604a0c9aadaf upstream.

Dan Carpenter's static checker has found this error, it's introduced by
commit 64c043de466d
("Btrfs: fix up read_tree_block to return proper error")

It's really supposed to 'break' the loop on error like others.

Cc: Dan Carpenter <dan.carpenter@...cle.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Liu Bo <bo.li.liu@...cle.com>
Reviewed-by: David Sterba <dsterba@...e.com>
Signed-off-by: David Sterba <dsterba@...e.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/btrfs/relocation.c |    1 +
 1 file changed, 1 insertion(+)

--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -1850,6 +1850,7 @@ again:
 			eb = read_tree_block(dest, old_bytenr, old_ptr_gen);
 			if (IS_ERR(eb)) {
 				ret = PTR_ERR(eb);
+				break;
 			} else if (!extent_buffer_uptodate(eb)) {
 				ret = -EIO;
 				free_extent_buffer(eb);