vfs_bio panic

[Manuel Bouyer <bouyer%antioche.eu.org@localhost>]

Hi,
I got on
NetBSD 4.99.64 (XEN3_DOM0) #192: Sat Jun  7 21:59:08 CEST 2008
 
bouyer@rock:/dsk/l1/misc/bouyer/tmp/amd64/obj/dsk/l1/misc/bouyer/current/src/sys/arch/amd64/compile/XEN3_DOM0

this panic:
panic: kernel diagnostic assertion "!ISSET(bp->b_cflags, BC_BUSY)" failed: file 
"/dsk/l1/misc/bouyer/current/src/sys/kern/vfs_bio.c", line 1313
fatal breakpoint trap in supervisor mode
trap type 1 code 0 rip ffffffff804abd7d cs e030 rflags 246 cr2  7f7ffdfec000 
cpl 0 rsp ffffa0000cfdb8f0
Stopped in pid 0.37 (system) at netbsd:breakpoint+0x5:  leave
breakpoint() at netbsd:breakpoint+0x5
panic() at netbsd:panic+0x255
__kernassert() at netbsd:__kernassert+0x2d
getnewbuf() at netbsd:getnewbuf+0x2b0
getblk() at netbsd:getblk+0x91
ffs_getblk() at netbsd:ffs_getblk+0x4f
ffs_sbupdate() at netbsd:ffs_sbupdate+0x54
ffs_cgupdate() at netbsd:ffs_cgupdate+0x21
ffs_sync() at netbsd:ffs_sync+0x345
sync_fsync() at netbsd:sync_fsync+0x76
VOP_FSYNC() at netbsd:VOP_FSYNC+0x34
sched_sync() at netbsd:sched_sync+0x14d

Does it ring a bell for someone ? May it be fixed in more recent sources ?

-- 
Manuel Bouyer <bouyer%antioche.eu.org@localhost>
     NetBSD: 26 ans d'experience feront toujours la difference
--