On 11/6/15 1:12 PM, Kurt Lidl wrote:
I updated my machine that tracks head and rebooted it,
and it panic'd during the 'shutdown -r' execution.

   Panic String: solaris assert: zrl->zr_refcount == 0 (0x2 == 0x0),
file: /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zrlock.c,
line: 64

(kgdb) bt
#0  doadump (textdump=1) at pcpu.h:221
#1  0xffffffff80708ec5 in kern_reboot (howto=260)
     at /usr/src/sys/kern/kern_shutdown.c:364
#2  0xffffffff8070949b in vpanic (fmt=<value optimized out>,
     ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:757
#3  0xffffffff807094e3 in panic (fmt=0x0)
     at /usr/src/sys/kern/kern_shutdown.c:688
#4  0xffffffff81b3c25f in assfail3 (a=<value optimized out>,
     lv=<value optimized out>, op=<value optimized out>,
     rv=<value optimized out>, f=<value optimized out>, l=<value
optimized out>)
     at /usr/src/sys/cddl/compat/opensolaris/kern/opensolaris_cmn_err.c:91
#5  0xffffffff8187fe54 in zrl_destroy (zrl=0xfffff8001d429820)
     at /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zrlock.c:64
#6  0xffffffff81804432 in dnode_special_close (dnh=0xfffff8001d429820)
#7  0xffffffff817fa608 in dmu_objset_evict_done (os=0xfffff8001d429800)
#8  0xffffffff8180f191 in dsl_dataset_evict (dbu=0xfffff8000f957000)
#9  0xffffffff80756ae0 in taskqueue_run_locked (queue=0xfffff8000d00cd00)
     at /usr/src/sys/kern/subr_taskqueue.c:430
#10 0xffffffff807575f8 in taskqueue_thread_loop (arg=<value optimized out>)
     at /usr/src/sys/kern/subr_taskqueue.c:683
#11 0xffffffff806cf6b4 in fork_exit (
     callout=0xffffffff80757570 <taskqueue_thread_loop>,
     arg=0xfffff8000d01e020, frame=0xfffffe085c058ac0)
     at /usr/src/sys/kern/kern_fork.c:1011
#12 0xffffffff809ae70e in fork_trampoline ()
     at /usr/src/sys/amd64/amd64/exception.S:609
#13 0x0000000000000000 in ?? ()

I have a vmcore for this panic.  I have saved off the installed kernel
directory for future examination.


I should have copied in the whole info.2 file:

Dump header from device: /dev/gpt/swap0
  Architecture: amd64
  Architecture Version: 2
  Dump Length: 1404231680
  Blocksize: 512
  Dumptime: Fri Nov  6 12:10:25 2015
  Hostname: busybox.pix.net
  Magic: FreeBSD Kernel Dump
Version String: FreeBSD 11.0-CURRENT #86 r290447M: Fri Nov 6 11:00:18 EST 2015
Panic String: solaris assert: zrl->zr_refcount == 0 (0x2 == 0x0), file: /usr/src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zrlock.c, line: 64
  Dump Parity: 375889703
  Bounds: 2
  Dump Status: good

The only delta in my source tree on this machine is a patch
to the pagezero.S file, which I've been running for several months,
so I know it's not that.

(https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=199151 for the
delta, if you care.  I need to benchmark this more fully, but just
haven't gotten around to doing it yet.)


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