kern/182570: ZFS panic in receive

Keith White kwhite at
Wed Oct 2 18:00:02 UTC 2013

The following reply was made to PR kern/182570; it has been noted by GNATS.

From: Keith White <kwhite at>
To: FreeBSD-gnats-submit at, freebsd-bugs at
Subject: Re: kern/182570: ZFS panic in receive
Date: Wed, 2 Oct 2013 13:52:04 -0400 (EDT)

 On Wed, 2 Oct 2013, FreeBSD-gnats-submit at wrote:
 > Thank you very much for your problem report.
 > It has the internal identification `kern/182570'.
 > The individual assigned to look at your
 > report is: freebsd-bugs.
 > You can access the state of your problem report at any time
 > via this link:
 >> Category:       kern
 >> Responsible:    freebsd-bugs
 >> Synopsis:       ZFS panic in receive
 >> Arrival-Date:   Wed Oct 02 11:50:03 UTC 2013
 Addendum:  The "how to repeat" section has an earlier version.  More success (err, repeatable failure) with this:
 === cut here ===
 zfs create tank/nobj
 zfs snapshot tank/nobj at 0
 __MAKECONF=/dev/null SRCCONF=/dev/null MAKEOBJDIRPREFIX=/tank/nobj make -j6 buildkernel
 zfs snapshot tank/nobj at 1
 #find /tank/nobj -name '.h' -print | xargs rm
 zfs snapshot tank/nobj at 2
 #rm -rf /tank/nobj/*
 zfs snapshot tank/nobj at 3
 __MAKECONF=/dev/null SRCCONF=/dev/null MAKEOBJDIRPREFIX=/tank/nobj make -j6 buildkernel
 zfs snapshot tank/nobj at 4
 #rm -rf /tank/nobj/*
 zfs snapshot tank/nobj at 5
 zfs send -vR tank/nobj at 5 | zfs recv -vF tank/xobj
 === cut here ===
 Missing from the report is a kernel backtrace:
 === cut here ===
 # kgdb /boot/kernel/kernel /var/crash/vmcore.last
 GNU gdb 6.1.1 [FreeBSD]
 Copyright 2004 Free Software Foundation, Inc.
 GDB is free software, covered by the GNU General Public License, and you are
 welcome to change it and/or distribute copies of it under certain conditions.
 Type "show copying" to see the conditions.
 There is absolutely no warranty for GDB.  Type "show warranty" for details.
 This GDB was configured as "amd64-marcel-freebsd"...
 Unread portion of the kernel message buffer:
 panic: solaris assert: dn->dn_maxblkid == 0 && (BP_IS_HOLE(&dn->dn_phys->dn_blkptr[0]) || dnode_block_freed(dn, 0)), file: /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c, line: 598
 cpuid = 1
 KDB: stack backtrace:
 db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe00992b3280
 kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe00992b3330
 vpanic() at vpanic+0x126/frame 0xfffffe00992b3370
 panic() at panic+0x43/frame 0xfffffe00992b33d0
 assfail() at assfail+0x22/frame 0xfffffe00992b33e0
 dnode_reallocate() at dnode_reallocate+0x225/frame 0xfffffe00992b3430
 dmu_object_reclaim() at dmu_object_reclaim+0x123/frame 0xfffffe00992b3480
 dmu_recv_stream() at dmu_recv_stream+0xd79/frame 0xfffffe00992b36b0
 zfs_ioc_recv() at zfs_ioc_recv+0x96c/frame 0xfffffe00992b3920
 zfsdev_ioctl() at zfsdev_ioctl+0x54a/frame 0xfffffe00992b39c0
 devfs_ioctl_f() at devfs_ioctl_f+0xf0/frame 0xfffffe00992b3a20
 kern_ioctl() at kern_ioctl+0x2ca/frame 0xfffffe00992b3a90
 sys_ioctl() at sys_ioctl+0x11f/frame 0xfffffe00992b3ae0
 amd64_syscall() at amd64_syscall+0x265/frame 0xfffffe00992b3bf0
 Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe00992b3bf0
 --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x8019dc9ca, rsp = 0x7fffffff5ad8, rbp = 0x7fffffff5b60 ---
 KDB: enter: panic
 Uptime: 37m10s
 Dumping 874 out of 2023 MB:
 #0  doadump (textdump=1) at pcpu.h:218
 218     pcpu.h: No such file or directory.
          in pcpu.h
 (kgdb) where
 #0  doadump (textdump=1) at pcpu.h:218
 #1  0xffffffff808b7217 in kern_reboot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:447
 #2  0xffffffff808b7725 in vpanic (fmt=<value optimized out>, ap=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:754
 #3  0xffffffff808b7773 in panic (fmt=<value optimized out>) at /usr/src/sys/kern/kern_shutdown.c:683
 #4  0xffffffff81e52222 in assfail (a=<value optimized out>, f=<value optimized out>, l=<value optimized out>) at /usr/src/sys/modules/opensolaris/../../cddl/compat/opensolaris/kern/opensolaris_cmn_err.c:81
 #5  0xffffffff81d09735 in dnode_reallocate (dn=0xfffff8006dde3000, ot=DMU_OT_PLAIN_FILE_CONTENTS, blocksize=1024, bonustype=DMU_OT_SA, bonuslen=168, tx=0xfffff8006d7a2600)
      at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/dnode.c:596
 #6  0xffffffff81cff463 in dmu_object_reclaim (os=<value optimized out>, object=<value optimized out>, ot=DMU_OT_PLAIN_FILE_CONTENTS, blocksize=1024, bonustype=DMU_OT_SA, bonuslen=168)
      at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_object.c:155
 #7  0xffffffff81cfd849 in dmu_recv_stream (drc=0xfffffe00992b3728, fp=<value optimized out>, voffp=0xfffffe00992b3718, cleanup_fd=8, action_handlep=<value optimized out>)
      at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/dmu_send.c:1231
 #8  0xffffffff81d8b1fc in zfs_ioc_recv (zc=0xfffffe00372e1000) at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c:4102
 #9  0xffffffff81d864ea in zfsdev_ioctl (dev=<value optimized out>, zcmd=<value optimized out>, arg=<value optimized out>, flag=<value optimized out>, td=<value optimized out>)
      at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c:5960
 #10 0xffffffff807af840 in devfs_ioctl_f (fp=0xfffff800052e1460, com=3222821403, data=0xfffff8006ff1faa0, cred=<value optimized out>, td=0xfffff8003f7ba920) at /usr/src/sys/fs/devfs/devfs_vnops.c:757
 #11 0xffffffff8090e94a in kern_ioctl (td=0xfffff8003f7ba920, fd=<value optimized out>, com=0) at file.h:319
 #12 0xffffffff8090e62f in sys_ioctl (td=0xfffff8003f7ba920, uap=0xfffffe00992b3b80) at /usr/src/sys/kern/sys_generic.c:698
 #13 0xffffffff80caee35 in amd64_syscall (td=0xfffff8003f7ba920, traced=0) at subr_syscall.c:134
 #14 0xffffffff80c961ab in Xfast_syscall () at /usr/src/sys/amd64/amd64/exception.S:391
 #15 0x00000008019dc9ca in ?? ()
 Previous frame inner to this frame (corrupt stack?)
 Current language:  auto; currently minimal
 === cut here ===

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