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jbd2: fix infinite loop when recovering corrupt journal blocks

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commit 022eaa7517 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Darrick J. Wong
2014-08-27 18:40:05 -04:00
committed by Greg Kroah-Hartman
parent d9fab037c6
commit 666cec8db7
1 changed files with 5 additions and 2 deletions
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7
fs/jbd2/recovery.c
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@@ -427,6 +427,7 @@ 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
@@ -599,7 +600,8 @@ 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
@@ -798,7 +800,8 @@ static int do_one_pass(journal_t *journal,
success = -EIO;
}
}
if (block_error && success == 0)
success = -EIO;
return success;
failed: