The following reply was made to PR kern/33179; it has been noted by GNATS.

From: SODA Noriyuki <soda@NetBSD.org>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org,
	netbsd-bugs@NetBSD.org
Subject: Re: kern/33179: LFS deadlock and another panic
Date: Thu, 6 Apr 2006 20:48:34 +0900

 >>>>> On Sun,  2 Apr 2006 07:55:00 +0000 (UTC), juan@xtrarom.org said:
 
 >> Number:         33179
 >> Category:       kern
 >> Synopsis:       LFS deadlock and another panic
 
 > 	panic: lfs_truncate: negative bytes
 
 We got similar panic as follows:
 
 lfs_truncate: segment 919 short by 12288
 panic: lfs_truncate: negative bytes
 Stopped in pid 5.1 (ioflush) at netbsd:cpu_Debugger+0x5:        leave
 db> bt 
 cpu_Debugger() at netbsd:cpu_Debugger+0x5
 panic() at netbsd:panic+0x1c8
 lfs_update_seguse() at netbsd:lfs_update_seguse+0x1ac
 lfs_truncate() at netbsd:lfs_truncate+0x951
 ufs_inactive() at netbsd:ufs_inactive+0x310
 lfs_inactive() at netbsd:lfs_inactive+0x4e
 vrele() at netbsd:vrele+0x102
 lfs_unmark_dirop() at netbsd:lfs_unmark_dirop+0x131
 lfs_segwrite() at netbsd:lfs_segwrite+0x297
 lfs_sync() at netbsd:lfs_sync+0x67
 sync_fsync() at netbsd:sync_fsync+0x96
 sched_sync() at netbsd:sched_sync+0x226
 
 Environment:
 System: NetBSD anoncvs1.netbsd.org 3.0_STABLE NetBSD 3.0_STABLE (ANONCVS) #11: Fri Mar 17 05:04:07 UTC 2006  root@:/usr/obj/sys/arch/amd64/compile.amd64/ANONCVS amd64
 Architecture: x86_64
 Machine: amd64
 
 Since I forgot to specify RB_NOSYNC, crash dump isn't available.
 (The machine just hung just after it started sync.)
 --
 soda