diff options
| author | Kent Overstreet <kmo@daterainc.com> | 2013-10-10 17:31:15 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-13 16:08:35 -0700 |
| commit | 84c8b3b9e17107a74f07dc5e48264034f1410b97 (patch) | |
| tree | 92714f1610b72010aa6d0771a70ec3feb5342506 | |
| parent | adf0931b2b3ce91cc4096939650f4c4a3f68fef5 (diff) | |
bcache: Fix a null ptr deref regression
commit 2fe80d3bbf1c8bd9efc5b8154207c8dd104e7306 upstream.
Commit c0f04d88e46d ("bcache: Fix flushes in writeback mode") was fixing
a reported data corruption bug, but it seems some last minute
refactoring or rebasing introduced a null pointer deref.
Signed-off-by: Kent Overstreet <kmo@daterainc.com>
Reported-by: Gabriel de Perthuis <g2p.code@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/md/bcache/request.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index 2fe37fac1ca..cbcf8b301ed 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -1055,6 +1055,7 @@ static void request_write(struct cached_dev *dc, struct search *s) } else { trace_bcache_writeback(s->orig_bio); bch_writeback_add(dc, bio_sectors(bio)); + s->op.cache_bio = bio; if (bio->bi_rw & REQ_FLUSH) { /* Also need to send a flush to the backing device */ @@ -1067,8 +1068,6 @@ static void request_write(struct cached_dev *dc, struct search *s) flush->bi_private = cl; closure_bio_submit(flush, cl, s->d); - } else { - s->op.cache_bio = bio; } } out: |