NetBSD Problem Report #39914

From rmind@NetBSD.org  Thu Nov 13 17:21:30 2008
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Date: Thu, 13 Nov 2008 17:21:29 +0000 (UTC)
From: rmind@netbsd.org
Reply-To: rmind@netbsd.org
To: gnats-bugs@gnats.NetBSD.org
Subject: KASSERT(LIST_EMPTY(&vp->v_dirtyblkhd)) failed when unmounting ext2fs
X-Send-Pr-Version: 3.95

>Number:         39914
>Category:       kern
>Synopsis:       KASSERT(LIST_EMPTY(&vp->v_dirtyblkhd)) failed when unmounting ext2fs
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          closed
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Nov 13 17:25:00 +0000 2008
>Closed-Date:    Sat Dec 19 02:33:02 +0000 2015
>Last-Modified:  Sat Dec 19 02:33:02 +0000 2015
>Originator:     Mindaugas Rasiukevicius
>Release:        5.99.1
>Organization:
	The NetBSD Foundation
>Environment:
>Description:

Could not get core dump, but:

panic: kernel diagnostic assertion "LIST_EMPTY(&vp->v_dirtyblkhd) failed:
file "/home/netbsd/src-shm/sys/kern/vfs_subr.c", line 872
fatal breakpoint trap in supervisor mode
trap type 1 code 0 eip c017c81c cs 8 eflags 246 cr2 bb903000 ilevel 0
Stopped in pid 6442.1 (umount) at       netbsd:breakpoint+0x4:  popl   %ebp

db{1}> bt
breakpoint() at netbsd:breakpoint+0x4
panic() at netbsd:panic+x1aa
__kernassert() at netbsd:__kernassert+0x39
vinvalbuf(cbfacad4,1,ffffffff,cc486a20,0,0,cc2cbbcc,80000001,cc2cbbbc,4000) at netbsd:spec_close+0x87
VOP_CLOSE() at 0x68
ext2fs_unmount() at netbsd:ext2fd_unmount+0x9e
VFS_UNMOUNT() at netbsd:VFS_UNMOUNT+0x26
dounmount() at netbsd:dounmount+0xb0
sys_unmount() at netbsd:sys_unmount+0x10b
syscall() at netbsd:syscall+0xb1

db{1}> show vnode cbfacad4
OBJECT 0xcbfacad4: locked=0, pgops=0xc0481420, npages=0, refs=1

VNODE flags 4030<MPSAFE,LOCKSWORK,ONWORKLST>
mp 0xcbe0861c numoutput 0 size 0x0 writesize 0x0
data 0xcbfaa938 writecount 0 holdcnt 740
tag VT_UFS(1) type VBLK(3) mount 0xcbe0861c typedata 0xcbfaa938
v_lock 0xcbfacb74 v_vnlock 0xcbfacb74

>How-To-Repeat:
	mount ext2 file system
	some activity on file system (eg. build)
	umount
>Fix:

>Release-Note:

>Audit-Trail:
From: Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org,
        tsutsui@ceres.dti.ne.jp
Subject: Re: kern/39914: KASSERT(LIST_EMPTY(&vp->v_dirtyblkhd)) failed when
	 unmounting ext2fs
Date: Sat, 12 Sep 2009 12:34:29 +0900

 >>Synopsis:       KASSERT(LIST_EMPTY(&vp->v_dirtyblkhd)) failed when unmounting ext2fs
  :
 > panic() at netbsd:panic+x1aa
 > __kernassert() at netbsd:__kernassert+0x39
 > vinvalbuf(cbfacad4,1,ffffffff,cc486a20,0,0,cc2cbbcc,80000001,cc2cbbbc,4000) at netbsd:spec_close+0x87
 > VOP_CLOSE() at 0x68
 > ext2fs_unmount() at netbsd:ext2fd_unmount+0x9e
 > VFS_UNMOUNT() at netbsd:VFS_UNMOUNT+0x26
 > dounmount() at netbsd:dounmount+0xb0
 > sys_unmount() at netbsd:sys_unmount+0x10b
 > syscall() at netbsd:syscall+0xb1

 Could this fix affect this one?
 http://mail-index.NetBSD.org/source-changes/2009/09/12/msg000773.html
 >> Add a missed brelse(9) call after bread(9) in ext2fs_reload().

 ---
 Izumi Tsutsui

From: Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org, netbsd-bugs@NetBSD.org,
        rmind@NetBSD.org, tsutsui@ceres.dti.ne.jp
Subject: Re: kern/39914: KASSERT(LIST_EMPTY(&vp->v_dirtyblkhd)) failed whenunmounting
	 ext2fs
Date: Sun, 13 Sep 2009 15:13:06 +0900

 I wrote:

 >  >>Synopsis:       KASSERT(LIST_EMPTY(&vp->v_dirtyblkhd)) failed when unmounting ext2fs

 >  Could this fix affect this one?
 >  http://mail-index.NetBSD.org/source-changes/2009/09/12/msg000773.html
 >  >> Add a missed brelse(9) call after bread(9) in ext2fs_reload().

 Ah, no, it still happens on netbsd-5-0 with the above fix.
 Maybe the same problem as PR kern/41189.

 ---
 Izumi tsutsui

From: Izumi Tsutsui <tsutsui@ceres.dti.ne.jp>
To: gnats-bugs@NetBSD.org
Cc: kern-bug-people@NetBSD.org, gnats-admin@NetBSD.org, netbsd-bugs@NetBSD.org,
        rmind@NetBSD.org, tsutsui@ceres.dti.ne.jp
Subject: Re: kern/39914: KASSERT(LIST_EMPTY(&vp->v_dirtyblkhd)) failed whenunmountingext2fs
Date: Sun, 13 Sep 2009 21:19:59 +0900

 I wrote:
 > >  Could this fix affect this one?
 > >  http://mail-index.NetBSD.org/source-changes/2009/09/12/msg000773.html
 > >  >> Add a missed brelse(9) call after bread(9) in ext2fs_reload().
 > 
 > Ah, no, it still happens on netbsd-5-0 with the above fix.
 > Maybe the same problem as PR kern/41189.

 Well, but it doesn't seem to happen on recent -current,
 though I'm not sure which changes could affect it.
 ---
 Izumi Tsutsui

State-Changed-From-To: open->closed
State-Changed-By: dholland@NetBSD.org
State-Changed-When: Sat, 19 Dec 2015 02:33:02 +0000
State-Changed-Why:
Was fixed in early 5.99.x, and -5 is now EOL


>Unformatted:

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