diff mbox

[1/2] jbd2: fix infinite loop when recovering corrupt journal blocks

Message ID 20140815204352.16444.79311.stgit@birch.djwong.org
State Accepted, archived
Headers show

Commit Message

Darrick Wong Aug. 15, 2014, 8:43 p.m. UTC 
From: Darrick J. Wong <darrick.wong@oracle.com>

When recovering the journal, don't fall into an infinite loop if we
encounter a corrupt journal block.  Instead, just skip the block and
return an error, which fails the mount and thus forces the user to run
a full filesystem fsck.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
 fs/jbd2/recovery.c |    7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)


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Comments

Theodore Ts'o Aug. 26, 2014, 2:44 a.m. UTC | #1 
On Fri, Aug 15, 2014 at 01:43:52PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@oracle.com>
> 
> When recovering the journal, don't fall into an infinite loop if we
> encounter a corrupt journal block.  Instead, just skip the block and
> return an error, which fails the mount and thus forces the user to run
> a full filesystem fsck.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

Thanks, applied.

					- Ted
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diff mbox

Patch

diff --git a/fs/jbd2/recovery.c b/fs/jbd2/recovery.c
index 3b6bb19..00e9703 100644
--- a/fs/jbd2/recovery.c
+++ b/fs/jbd2/recovery.c
@@ -426,6 +426,7 @@  static int do_one_pass(journal_t *journal,
 	int			tag_bytes = journal_tag_bytes(journal);
 	__u32			crc32_sum = ~0; /* Transactional Checksums */
 	int			descr_csum_size = 0;
+	int			block_error = 0;
 
 	/*
 	 * First thing is to establish what we expect to find in the log
@@ -598,7 +599,8 @@  static int do_one_pass(journal_t *journal,
 						       "checksum recovering "
 						       "block %llu in log\n",
 						       blocknr);
-						continue;
+						block_error = 1;
+						goto skip_write;
 					}
 
 					/* Find a buffer for the new
@@ -797,7 +799,8 @@  static int do_one_pass(journal_t *journal,
 				success = -EIO;
 		}
 	}
-
+	if (block_error && success == 0)
+		success = -EIO;
 	return success;
 
  failed: