[Bug 249901] 12.2-BETA3: Panic in zfs_ctldir.c:358, zfsctl_create+0x111

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=249901

            Bug ID: 249901
           Summary: 12.2-BETA3: Panic in zfs_ctldir.c:358,
                    zfsctl_create+0x111
           Product: Base System
           Version: Unspecified
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs at FreeBSD.org
          Reporter: kumba at gentoo.org

Testing 12.2-BETA3 out, I get a warning spammed to the console a few hundred
times, followed swiftly by a panic and a reboot.  Note: custom kernel with ZFS
module compiled in.

<<normal boot sequence>>
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
sysctl_warn_reuse: can't re-use a leaf (kstat.zfs.misc.arcstats)
<<repeats another few hundred times>>
<<resuming what looks like a normal boot>>
Root mount waiting for: usbus1 usbus3
ugen3.2: <Chicony electronics Co.,Ltd. HP Truevision HD> at usbus3
panic: solaris assert: VFS_ROOT(zfsvfs->z_vfs, LK_EXCLUSIVE, &rvp) == 0, file:
../../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c, line: 358
cpuid = 0
time = 4
KDB: stack backtrace
#0 0xffffffff808a2345 at kdb_backtrace+0x65
#1 0xffffffff80857fe5 at vpanic+0x125
#2 0xffffffff80857eb3 at panic+0x43
#3 0xffffffff8036fcba at assfail+0x1a
#4 0xffffffff80438a71 at zfsctl_create+0x111
#5 0xffffffff8044f768 at zfs_mount+0x718
#6 0xffffffff80918fc5 at vfs_domount+0xb55
#7 0xffffffff80917dc7 at vfs_donmount+0x937
#8 0xffffffff8091b76d at kernel_mount+0x3d
#9 0xffffffff8091dd91 at parse_mount+0x491
#10 0xffffffff8091c1c5 at vfs_mountroot+0x545
#11 0xffffffff807f3f17 at start_init+0x27
#12 0xffffffff8081b0dd at fork_exit+0x7d
#13 0xffffffff80ba6ede at fork_trampoline+0xe
Uptime: 4s
<<reboots>>

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