blktests failures with v6.6-rc1

[Shinichiro Kawasaki]

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@mail.gmail.com/
  [3] https://lore.kernel.org/linux-block/20230908005702.2183908-1-chengming.zhou@linux.dev/

#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@intel.com/