[Bug 269608] [lor] Lock order reversal ufs/defs/nullfs

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=269608

            Bug ID: 269608
           Summary: [lor] Lock order reversal ufs/defs/nullfs
           Product: Base System
           Version: 13.1-STABLE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: artem@artem.ru

Created attachment 240195
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=240195&action=edit
startup lor

Running 13-stable. gmirror, SU, SU journaling

On every boot i get LOR and on shutdown too

startup lor is in the attachement (between ufs/nullfs/devfs)

the shutdown lor is this:

Feb 17 03:55:36 omni kernel: lock order reversal:
Feb 17 03:55:36 omni kernel:  1st 0xfffffe0107607040 struct mount mtx (struct
mount mtx, sleep mutex) @ /usr/src/sys/ufs/ffs/ffs_softdep.c:2150
Feb 17 03:55:36 omni kernel:  2nd 0xfffff80006a0a898 FFS (FFS Lock, sleep
mutex) @ /usr/src/sys/ufs/ffs/ffs_softdep.c:2153
Feb 17 03:55:36 omni kernel: lock order FFS Lock -> struct mount mtx
established at:
Feb 17 03:55:36 omni kernel: #0 0xffffffff80cab8cd at witness_checkorder+0x32d
Feb 17 03:55:36 omni kernel: #1 0xffffffff80c194e4 at __mtx_lock_flags+0x94
Feb 17 03:55:36 omni kernel: #2 0xffffffff80fb56ed at quotaoff_inchange+0xbd
Feb 17 03:55:36 omni kernel: #3 0xffffffff80fa4e3a at ffs_flushfiles+0x12a
Feb 17 03:55:36 omni kernel: #4 0xffffffff80f8455d at softdep_flushfiles+0xad
Feb 17 03:55:36 omni kernel: #5 0xffffffff80fa675a at ffs_unmount+0x6a
Feb 17 03:55:36 omni kernel: #6 0xffffffff80d1a221 at dounmount+0x391
Feb 17 03:55:36 omni kernel: #7 0xffffffff80d2699a at vfs_unmountall+0x6a
Feb 17 03:55:36 omni kernel: #8 0xffffffff80cf946c at bufshutdown+0x31c
Feb 17 03:55:36 omni kernel: #9 0xffffffff80c3e733 at kern_reboot+0x203
Feb 17 03:55:36 omni kernel: #10 0xffffffff80c3e4d0 at sys_reboot+0x390
Feb 17 03:55:36 omni kernel: #11 0xffffffff8113752e at amd64_syscall+0x12e
Feb 17 03:55:36 omni kernel: #12 0xffffffff8110b7cb at fast_syscall_common+0xf8
Feb 17 03:55:36 omni kernel: lock order struct mount mtx -> FFS Lock attempted
at:
Feb 17 03:55:36 omni kernel: #0 0xffffffff80cac19d at witness_checkorder+0xbfd
Feb 17 03:55:36 omni kernel: #1 0xffffffff80c194e4 at __mtx_lock_flags+0x94
Feb 17 03:55:36 omni kernel: #2 0xffffffff80f84844 at softdep_flushfiles+0x394
Feb 17 03:55:36 omni kernel: #3 0xffffffff80fa675a at ffs_unmount+0x6a
Feb 17 03:55:36 omni kernel: #4 0xffffffff80d1a221 at dounmount+0x391
Feb 17 03:55:36 omni kernel: #5 0xffffffff80d2699a at vfs_unmountall+0x6a
Feb 17 03:55:36 omni kernel: #6 0xffffffff80cf946c at bufshutdown+0x31c
Feb 17 03:55:36 omni kernel: #7 0xffffffff80c3e733 at kern_reboot+0x203
Feb 17 03:55:36 omni kernel: #8 0xffffffff80c3e4d0 at sys_reboot+0x390
Feb 17 03:55:36 omni kernel: #9 0xffffffff8113752e at amd64_syscall+0x12e
Feb 17 03:55:36 omni kernel: #10 0xffffffff8110b7cb at fast_syscall_common+0xf8

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