The function kzalloc() in detached_dev_do_request() can fail, so its return value should be checked. Fixes: bc082a55d25c (bcache: fix inaccurate io state for detached bcache devices) Reported-by: TOTE Robot <oslab@xxxxxxxxxxxxxxx> Signed-off-by: Jia-Ju Bai <baijiaju1990@xxxxxxxxx> --- drivers/md/bcache/request.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c index d15aae6c51c1..1b5ccfa93b8c 100644 --- a/drivers/md/bcache/request.c +++ b/drivers/md/bcache/request.c @@ -1107,6 +1107,8 @@ static void detached_dev_do_request(struct bcache_device *d, struct bio *bio, * which would call closure_get(&dc->disk.cl) */ ddip = kzalloc(sizeof(struct detached_dev_io_private), GFP_NOIO); + if (!ddip) + return; ddip->d = d; /* Count on the bcache device */ ddip->orig_bdev = orig_bdev; -- 2.17.1
