Hi all, I ran the latest blktests (git hash: e0bb3dc05bc7) with v6.6-rc1 kernel. I observed a couple of new test case failures which are listed below. Comparing with the failures observed with v6.5 kernel [1], the failure at zbd/010 is no longer observed (#4 in [1]). [1] https://lore.kernel.org/linux-block/dycg2iltyeezp6y7bqfhfke6bb3dantkk5nsyk6qjfg2o55esu@liixlkhgtqy3/ List of new failures ==================== #1: nvme/048 #2: nbd/002 Failure description =================== #1: nvme/048 (rdma and tcp transport) The test case fails with "BUG: KASAN: slab-use-after-free". Yi Zhang observed it with linux-next kernel and reported [2]. A fix patch has been provided [3]. [2] https://lore.kernel.org/linux-block/CAHj4cs_CK63uoDpGBGZ6DN4OCTpzkR3UaVgK=LX8Owr8ej2ieQ@xxxxxxxxxxxxxx/ [3] https://lore.kernel.org/linux-block/20230908005702.2183908-1-chengming.zhou@xxxxxxxxx/ #2: nbd/002 With kernel v6.6-rc1, nbd/002 fails with the messages below. I reported it to relevant lists [4]. Kernel test robot reported it also [5]. nbd/002 (tests on partition handling for an nbd device) [failed] runtime 1.620s ... 0.369s --- tests/nbd/002.out 2023-04-06 10:11:07.923670528 +0900 +++ /home/shin/Blktests/blktests/results/nodev/nbd/002.out.bad 2023-09-11 12:03:30.901246261 +0900 @@ -1,4 +1,3 @@ Running nbd/002 Testing IOCTL path -Testing the netlink path -Test complete +Didn't have partition on ioctl path [4] https://lore.kernel.org/linux-block/jvlrypdkye74nea4iys2akwfyvskvpw4x3a2zewwxx3qde22rj@jykkoadmb2m5/ [5] https://lore.kernel.org/linux-block/202309121232.767ff8c4-oliver.sang@xxxxxxxxx/