panic assertion "!cv_has_waiters(&bp->b_done) vfs_subr2.c

[Sarton O'Brien <bsd-xen%roguewrt.org@localhost>]

Updated just prior to building.

NetBSD sammy.internal 4.99.65 NetBSD 4.99.65 (XEN3_DOMU) #2: Wed Jun 18 
10:55:01 EST 2008  
root%spike.internal@localhost:/usr/obj/sys/arch/amd64/compile/XEN3_DOMU amd64

Jun 18 11:30:55 babylon powerd[249]: open /dev/power: Device not configured
Starting sshd.
Starting nmbd.
Starting smbd.
postfix/postfix-script: starting the Postfix mail system
Starting mldonkey.
Starting cron.
Wed Jun 18 11:30:58 EST 2008
panic: kernel diagnostic assertion "!cv_has_waiters(&bp->b_done)" 
failed: file "/usr/src/sys/kern/vfs_subr2.c", line 551
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff80363c65 cs e030 rflags 246 cr2  ac4f44 
cpl 0 rsp ffffa00012bc0a70
Stopped in pid 0.4 (system) at  netbsd:breakpoint+0x5:  leave
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x255
__kernassert() at netbsd:__kernassert+0x2d
reassignbuf() at netbsd:reassignbuf+0x1a4
softdep_disk_write_complete() at netbsd:softdep_disk_write_complete+0x721
biodone2() at netbsd:biodone2+0x19
biointr() at netbsd:biointr+0x31
softint_thread() at netbsd:softint_thread+0x88
ds          0xa80
es          0xe02b
fs          0xa30
gs          0x207
rdi         0
rsi         0xd
rbp         0xffffa00012bc0a70
rbx         0xffffa00012bc0a80
rdx         0
rcx         0
rax         0x1
r8          0xffffffff805771c0  cpu_info_primary
r9          0x1
r10         0xffffa00012bc0990
r11         0xffffffff8037b640  xenconscn_putc
r12         0x100
r13         0xffffffff80467be0  copyright+0x88aa0
r14         0
r15         0x1
rip         0xffffffff80363c65  breakpoint+0x5
cs          0xe030
rflags      0x246
rsp         0xffffa00012bc0a70
ss          0xe02b
netbsd:breakpoint+0x5:  leave
db>