RELENG_7/i386: ZFS panic on reboot

[Dmitry Morozovsky]

while rebooting:

(kgdb) bt
#0  doadump () at pcpu.h:196
#1  0x80514298 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:418
#2  0x80514575 in panic (fmt=Variable "fmt" is not available.
) at /usr/src/sys/kern/kern_shutdown.c:574
#3  0x806a74d4 in trap_fatal (frame=0xbf5b9a24, eva=12) at 
/usr/src/sys/i386/i386/trap.c:939
#4  0x806a771d in trap_pfault (frame=0xbf5b9a24, usermode=0, eva=12) at 
/usr/src/sys/i386/i386/trap.c:852
#5  0x806a808a in trap (frame=0xbf5b9a24) at /usr/src/sys/i386/i386/trap.c:530
#6  0x8069016b in calltrap () at /usr/src/sys/i386/i386/exception.s:159
#7  0x80806610 in gfs_dir_create (struct_size=132, pvp=0x87b388a0, 
vfsp=0x87a93b40, ops=0x808817a0, entries=0x0, inode_cb=0, maxlen=256, 
    readdir_cb=0x808636c6 <zfsctl_snapdir_readdir_cb>, lookup_cb=0) at 
/usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/gfs.c:420
#8  0x80863420 in zfsctl_mknode_snapdir (pvp=0x87b388a0) at 
/usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c:783
#9  0x808069e9 in gfs_dir_lookup (dvp=0x87b388a0, nm=0x8087dfae "snapshot", 
vpp=0xbf5b9b60) at 
/usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/gfs.c:630
#10 0x808630bc in zfsctl_root_lookup (dvp=0x87b388a0, nm=0x8087dfae "snapshot", 
vpp=0xbf5b9b60, pnp=0x0, flags=0, rdir=0x0, cr=0x85e84000)
    at 
/usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c:396
#11 0x808638fa in zfsctl_umount_snapshots (vfsp=0x87a93b40, fflags=524288, 
cr=0x85e84000)
    at 
/usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c:1063
#12 0x8086b1dc in zfs_umount (vfsp=0x87a93b40, fflag=524288, td=0x85e8ecc0) at 
/usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vfsops.c:692
#13 0x80586ea4 in dounmount (mp=0x87a93b40, flags=524288, td=0x85e8ecc0) at 
/usr/src/sys/kern/vfs_mount.c:1293
#14 0x8058a4e8 in vfs_unmountall () at /usr/src/sys/kern/vfs_subr.c:2944
#15 0x80514005 in boot (howto=16392) at /usr/src/sys/kern/kern_shutdown.c:400
#16 0x8051445d in reboot (td=0x85e8ecc0, uap=0xbf5b9cfc) at 
/usr/src/sys/kern/kern_shutdown.c:172
#17 0x806a7a60 in syscall (frame=0xbf5b9d38) at 
/usr/src/sys/i386/i386/trap.c:1090
#18 0x806901d0 in Xint0x80_syscall () at /usr/src/sys/i386/i386/exception.s:255
#19 0x00000033 in ?? ()

Any additional info needed? Thanks!

-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck at FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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