VFS panic (bp 0xd6523fdc wrong b_bufobj 0 should be 0xc27d2940).

Hi.

I get the panic below while running this script:

#!/bin/sh

for dir in `jot 5 1 5`; do
	rm -rf $dir
	mkdir $dir
done
for dir in `jot 5 1 5`; do
	cd $dir
	iozone -s 64m -r 512k >output.log 2>&1 &
	cd ..
done

panic: bp 0xd6523fdc wrong b_bufobj 0 should be 0xc27d2940
cpuid = 2
KDB: enter: panic
[thread pid 517 tid 100125 ]
Stopped at      kdb_enter+0x2b: nop     
db> tr
Tracing pid 517 tid 100125 td 0xc246c180
kdb_enter(c05d1349) at kdb_enter+0x2b
panic(c05d6e92,d6523fdc,0,c27d2940,d6528a2c) at panic+0x127
reassignbuf(d6528a2c,c246c180,ed614a00,c04d87e0,d6528a2c) at reassignbuf+0x148
bdirty(d6528a2c,c27d2880,c0cd0238,ffffffff,2) at bdirty+0x86
bdwrite(d6528a2c) at bdwrite+0x2ac
cluster_write(c27d2880,d6528a2c,2f70000,0,7f) at cluster_write+0x48c
ffs_write(ed614c04,0,0,c06031c0,ed614bb8) at ffs_write+0x508
VOP_WRITE_APV(c060ade0,ed614c04) at VOP_WRITE_APV+0x112
vn_write(c23e4480,ed614c78,c27bd380,0,c246c180) at vn_write+0x1ea
dofilewrite(c246c180,c23e4480,3,8300000,80000) at dofilewrite+0xa8
write(c246c180,ed614d04,3,107,246) at write+0x39
syscall(3b,3b,bfbf003b,0,5e) at syscall+0x22f
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (4, FreeBSD ELF32, write), eip = 0x280de65b, esp = 0xbfbfe8cc, ebp = 0xbfbfea08 ---
db> 

This is recent HEAD. The box is Dual Xeon (HTT enabled).

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd_at_FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!