From 6e876c3dd205d30b0db6850e97a03d75457df007 Mon Sep 17 00:00:00 2001 From: luojiajun Date: Fri, 1 Mar 2019 00:30:00 -0500 Subject: jbd2: fix invalid descriptor block checksum In jbd2_journal_commit_transaction(), if we are in abort mode, we may flush the buffer without setting descriptor block checksum by goto start_journal_io. Then fs is mounted, jbd2_descriptor_block_csum_verify() failed. [ 271.379811] EXT4-fs (vdd): shut down requested (2) [ 271.381827] Aborting journal on device vdd-8. [ 271.597136] JBD2: Invalid checksum recovering block 22199 in log [ 271.598023] JBD2: recovery failed [ 271.598484] EXT4-fs (vdd): error loading journal Fix this problem by keep setting descriptor block checksum if the descriptor buffer is not NULL. This checksum problem can be reproduced by xfstests generic/388. Signed-off-by: luojiajun Signed-off-by: Theodore Ts'o Reviewed-by: Jan Kara --- fs/jbd2/commit.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'fs/jbd2/commit.c') diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 2eb55c3361a8..efd0ce9489ae 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -694,9 +694,11 @@ void jbd2_journal_commit_transaction(journal_t *journal) the last tag we set up. */ tag->t_flags |= cpu_to_be16(JBD2_FLAG_LAST_TAG); - - jbd2_descriptor_block_csum_set(journal, descriptor); start_journal_io: + if (descriptor) + jbd2_descriptor_block_csum_set(journal, + descriptor); + for (i = 0; i < bufs; i++) { struct buffer_head *bh = wbuf[i]; /* -- cgit v1.2.3