linux-ext4 - [PATCH 35/34] e2fsck: free bh when descriptor block checksum fails

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Date:	Sun, 14 Sep 2014 10:19:35 -0700
From:	"Darrick J. Wong" <darrick.wong@...cle.com>
To:	tytso@....edu
Cc:	linux-ext4@...r.kernel.org, Eric Sandeen <sandeen@...hat.com>
Subject: [PATCH 35/34] e2fsck: free bh when descriptor block checksum fails

Free the buffer head if the journal descriptor block fails checksum
verification.  This has been patched before (see "e2fsck: free bh on
csum verify error in do_one_pass") but apparently the patch was never
committed to jbd2 in the kernel, so when we resync'd the recovery code
with 3.16, the bug came back.  Sigh.

Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
Cc: Eric Sandeen <sandeen@...hat.com>
---
 e2fsck/recovery.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/e2fsck/recovery.c b/e2fsck/recovery.c
index 3dc7c06..b5ce3b3 100644
--- a/e2fsck/recovery.c
+++ b/e2fsck/recovery.c
@@ -525,6 +525,7 @@ static int do_one_pass(journal_t *journal,
 			    !jbd2_descr_block_csum_verify(journal,
 							  bh->b_data)) {
 				err = -EIO;
+				brelse(bh);
 				goto failed;
 			}

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