From: zhangyi (F) <[email protected]>
commit ef3f5830b859604eda8723c26d90ab23edc027a4 upstream.
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) <[email protected]>
Reviewed-by: Ritesh Harjani <[email protected]>
Cc: [email protected]
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Theodore Ts'o <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
fs/jbd2/journal.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -1348,8 +1348,10 @@ static int jbd2_write_superblock(journal
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))
