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| author | Kent Overstreet <kmo@daterainc.com> | 2013-10-10 17:31:15 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-13 18:14:32 -0700 |
| commit | fe164452c52395b47286b0ba3dfc9b3b3041f547 (patch) | |
| tree | e432104f0ecf1961ff254a40f9e8281ece62d09c | |
| parent | c0684969f66a2f636f5c9a78fe7267b38ccd149f (diff) | |
| download | linux-stable-fe164452c52395b47286b0ba3dfc9b3b3041f547.tar.gz linux-stable-fe164452c52395b47286b0ba3dfc9b3b3041f547.tar.bz2 linux-stable-fe164452c52395b47286b0ba3dfc9b3b3041f547.zip | |
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 71eb233b9ace..b6a74bcbb08f 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -996,6 +996,7 @@ static void request_write(struct cached_dev *dc, struct search *s) closure_bio_submit(bio, cl, s->d); } else { bch_writeback_add(dc); + s->op.cache_bio = bio; if (bio->bi_rw & REQ_FLUSH) { /* Also need to send a flush to the backing device */ @@ -1008,8 +1009,6 @@ 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: |