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jbd2: fix infinite loop when recovering corrupt journal blocks

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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>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@vger.kernel.org
This commit is contained in:
Darrick J. Wong 2014-08-27 18:40:05 -04:00 committed by Theodore Ts'o
parent 6603120e96
commit 022eaa7517
1 changed files with 5 additions and 2 deletions
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7
fs/jbd2/recovery.c
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@ -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: