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| author |   zhangyi (F) <yi.zhang@huawei.com> | 2020-06-20 14:19:48 +0800 |
|---|---|---|
| committer |   Theodore Ts'o <tytso@mit.edu> | 2020-08-06 00:15:58 -0400 |
| commit | ef3f5830b859604eda8723c26d90ab23edc027a4 (patch) | |
| tree | ac33d8df2c61789f71d0ca1616002eb9e29d8da1 /fs/jbd2 | |
| parent | ext4: fix potential negative array index in do_split() (diff) | |
| download | linux-dev-ef3f5830b859604eda8723c26d90ab23edc027a4.tar.xz linux-dev-ef3f5830b859604eda8723c26d90ab23edc027a4.zip | |
jbd2: add the missing unlock_buffer() in the error path of jbd2_write_superblock()
jbd2_write_superblock() is under the buffer lock of journal superblock
before ending that superblock write, so add a missing unlock_buffer() in
in the error path before submitting buffer.
Fixes: 742b06b5628f ("jbd2: check superblock mapped prior to committing")
Signed-off-by: zhangyi (F) <yi.zhang@huawei.com>
Reviewed-by: Ritesh Harjani <riteshh@linux.ibm.com>
Cc: stable@kernel.org
Link: https://lore.kernel.org/r/20200620061948.2049579-1-yi.zhang@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/jbd2')
| -rw-r--r-- | fs/jbd2/journal.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index e4944436e733..5493a0da23dd 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1367,8 +1367,10 @@ static int jbd2_write_superblock(journal_t *journal, int write_flags) int ret; /* Buffer got discarded which means block device got invalidated */ - if (!buffer_mapped(bh)) + if (!buffer_mapped(bh)) { + unlock_buffer(bh); return -EIO; + } trace_jbd2_write_superblock(journal, write_flags); if (!(journal->j_flags & JBD2_BARRIER)) |