kern/172952: 9.1 hangs on reboot after all buffers synced

[Per olof Ljungmark]

The following reply was made to PR kern/172952; it has been noted by GNATS.

From: Per olof Ljungmark <peo at intersonic.se>
To: bug-followup at FreeBSD.org
Cc: Andriy Gapon <avg at FreeBSD.org>
Subject: Re: kern/172952: 9.1 hangs on reboot after all buffers synced
Date: Wed, 24 Oct 2012 19:57:19 +0200

 Sorry, backtrace not complete.
 
 db> bt
 Tracing pid 1 tid 100002 td 0xfffffe0002f80920
 sched_switch() at sched_switch+0x119
 mi_switch() at mi_switch+0x186
 sleepq_timedwait() at sleepq_timedwait+0x42
 _sleep() at _sleep+0x1c9
 zfs_zget() at zfs_zget+0x1f5
 zfs_get_data() at zfs_get_data+0x4a
 zil_commit() at zil_commit+0x541
 zfs_freebsd_write() at zfs_freebsd_write+0xba0
 VOP_WRITE_APV() at VOP_WRITE_APV+0xb2
 vnode_pager_generic_putpages() at vnode_pager_generic_putpages+0x1bb
 vnode_pager_putpages() at vnode_pager_putpages+0xa9
 vm_pageout_flush() at vm_pageout_flush+0xc0
 vm_object_page_collect_flush() at vm_object_page_collect_flush+0x143
 vm_object_page_clean() at vm_object_page_clean+0x143
 vm_object_terminate() at vm_object_terminate+0x215
 vnode_destroy_vobject() at vnode_destroy_vobject+0xb9
 zfs_freebsd_reclaim() at zfs_freebsd_reclaim+0x57
 vgonel() at vgonel+0x127
 vflush() at vflush+0x2bf
 zfs_zget() at zfs_zget+0x1f5
 zfs_get_data() at zfs_get_data+0x4a
 zil_commit() at zil_commit+0x541
 zfs_freebsd_write() at zfs_freebsd_write+0xba0
 VOP_WRITE_APV() at VOP_WRITE_APV+0xb2
 vnode_pager_generic_putpages() at vnode_pager_generic_putpages+0x1bb
 vnode_pager_putpages() at vnode_pager_putpages+0xa9
 vm_pageout_flush() at vm_pageout_flush+0xc0
 vm_object_page_collect_flush() at vm_object_page_collect_flush+0x143
 vm_object_page_clean() at vm_object_page_clean+0x143
 vm_object_terminate() at vm_object_terminate+0x215
 vnode_destroy_vobject() at vnode_destroy_vobject+0xb9
 zfs_freebsd_reclaim() at zfs_freebsd_reclaim+0x57
 vgonel() at vgonel+0x127
 vflush() at vflush+0x2bf
 zfs_umount() at zfs_umount+0x9f
 dounmount() at dounmount+0x295
 vfs_unmountall() at vfs_unmountall+0x42
 kern_reboot() at kern_reboot+0x806
 sys_reboot() at sys_reboot+0x6c
 amd64_syscall() at amd64_syscall+0x540
 Xfast_syscall() at Xfast_syscall+0xf7
 --- syscall (55, FreeBSD ELF64, sys_reboot), rip = 0x40e3dc, rsp =
 0x7fffffffd6d
 8, rbp = 0x33d63d75 ---