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Message-Id: <20190327182040.17444-21-sashal@kernel.org> Date: Wed, 27 Mar 2019 14:19:34 -0400 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: luojiajun <luojiajun3@...wei.com>, Theodore Ts'o <tytso@....edu>, Sasha Levin <sashal@...nel.org>, linux-ext4@...r.kernel.org Subject: [PATCH AUTOSEL 4.9 21/87] jbd2: fix invalid descriptor block checksum From: luojiajun <luojiajun3@...wei.com> [ Upstream commit 6e876c3dd205d30b0db6850e97a03d75457df007 ] 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 <luojiajun3@...wei.com> Signed-off-by: Theodore Ts'o <tytso@....edu> Reviewed-by: Jan Kara <jack@...e.cz> Signed-off-by: Sasha Levin <sashal@...nel.org> --- fs/jbd2/commit.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c index 31f8ca046639..10ec27676191 100644 --- a/fs/jbd2/commit.c +++ b/fs/jbd2/commit.c @@ -700,9 +700,11 @@ 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]; /* -- 2.19.1
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