From: Darrick J. Wong Date: Wed, 27 Aug 2014 22:40:05 +0000 (-0400) Subject: jbd2: fix infinite loop when recovering corrupt journal blocks X-Git-Tag: v3.14.18~20 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=78353ceb3c1e3526b2538188f4f005dbb07fd67c;p=platform%2Fkernel%2Flinux-stable.git jbd2: fix infinite loop when recovering corrupt journal blocks commit 022eaa7517017efe4f6538750c2b59a804dc7df7 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 Signed-off-by: Theodore Ts'o Signed-off-by: Greg Kroah-Hartman --- 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: