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Date:      Tue, 20 Sep 2005 15:42:29 +0200
From:      Peter Holm <peter@holm.cc>
To:        Don Lewis <truckman@freebsd.org>
Cc:        freebsd-current@freebsd.org, b_bonev@mail.orbitel.bg
Subject:   Re: BETA4: Panic and can't cleanup filesystem
Message-ID:  <20050920134229.GA20894@peter.osted.lan>
In-Reply-To: <200509192054.j8JKsDlR074924@gw.catspoiler.org>
References:  <000001c5bb83$b9cbd3a0$4700000a@server> <200509192054.j8JKsDlR074924@gw.catspoiler.org>

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On Mon, Sep 19, 2005 at 01:54:13PM -0700, Don Lewis wrote:
> On 17 Sep, B. Bonev wrote:
> > When trying to unmount my flash drive with force (#umount -f /flash) machine
> > hardlocked.
> > After restart, when fsck-ing in background, computer panicked.
> > Machine is SMP 2x500MHz PIII with Asus P2B-DS motherboard
> > cvsuped and updated to RELENG_6 (BETA4) on 14 september with SHED_ULE and
> > PREEMPTION
> > panic is written on hand:
> > 
> > panic: handle_written_inodeblock: live inodedep
> > cpuid=0
> > KDB: enter: panic
> > [thread pid3 tid 100033]
> > stopped at 	kdb_enter+0x2b:nop
> > db> where
> > Tracing pid 3 tid 100033 td 0xc15d17d0
> > kdb_enter(c062b964) at kdb_enter+0x2b
> > panic(c063a716,0,2,0,0) at panic+0x127
> > handle_written_inodeblock(c1809a00,cbc1a738) at
> > handle_written_inodeblock+0x533
> > softdep_disk_write_complete(cbc1a738) at softdep_disk_write_complete+0xb6
> > bufdone(cbc1a738) at bufdone+0x160
> > g_vfs_done(c1825ad4) at g_vfs_done+0x8a
> > biodone(c1825ad4,d42e8cc4,0,c062632c,1ea) at biodone+0x57
> > g_io_shedule_up(c15d17d0) at g_io_shedule_up+0xb5
> > g_up_procbody(0,d42e8d38,0,c04be5c0,0) at g_up_procbody+0x5a
> > fork_exit(c04be5c0,0,d42e8d38 at fork_exit+0xa0
> > fork_trampoline() at fork_trampoline+0x8
> > --- trap 0x1,eip=0,esp=0xd42e8d6c,ebp=0 ---
> > db>show alllocks
> > Process 3 (g_up) thread 0xc15d17d0 (100033)
> > exclusive sleep mutex SoftdepLock r=0 (0xc06dbda0) locked @
> > /usr/src/sys/ufs/ffs/ffs_softdep.c:4075
> > exclusive sleep mutex g_xup r=0 (0xd42e8cc4) locked @
> > /usr/src/sys/geom/geom_io.c:490
> > Process 31 (irq20:acpi0) thread 0xc15cd320 (100021)
> > exclusive sleep mutex acpica subsystem lock r=0 (0xc15c0280) locked @
> > /usr/src/sys/modules/acpi/../../../dev/acpica/Osd/Osdynch.c:361
> > db> panic
> > Dump...
> 
> That looks like this problem:
> 
> <http://people.freebsd.org/~pho/stress/log/cons162.html>;
> 
> which I'm pretty sure was on the TODO list for 6.0-RELEASE
> <http://www.freebsd.org/releases/6.0R/todo.html>; as a showstopper bug. I
> don't see it there now, so it might have been fixed in the last few
> days.
> 

The problem is still in GENERIC 6.0-BETA5 from Sep 19 07:18 UTC.

- Peter

> 
> > after restart, system stoped and entered in single mode with inconsistency
> > in /var
> > after fsck, there was message:
> > 
> > BAD SUPERBLOCK: VALUES IN SUPERBLOCK DISAGREE WITH THOSE IN FIRST ALTERNATE
> > 
> > then search for SUPERBLOCK failed,
> > and fsck don't have option -b...
> 
> But fsck_ufs does, and it looks like you can pass this with the fsck -T
> option.  Try something like:
> 	fsck -Tufs,-b ...
> 
> 
> > tried to mount all filesystems and got another panic:
> > # /var: bad dir ino 2 at offset 0: mangled entry
> > panic: ufs_dirbad: bad dir
> > cpuid=0
> > KDB: enter: panic
> > [thread pid 133 tid 100063]
> > stoped at	kdb_enter+0x2b: nop
> > db>where
> > Tracing pid 133 tid 100063 td 0xc18554000
> > kdb_enter(c062b964) at kdb_enter+0x2b
> > panic(c063b64c,c1829800,da96c904,c059eb66,c18866b4) at panic+0x127
> > ufs_dirbad(c18866b4,0,c063b606,c1854000,0) at ufs_dirbad+0x3a
> > ufs_lookup(da96c92c) at ufs_lookup+0x36a
> > VOP_CACHEDLOOKUP_APV(c066fd80,da96c92c) at VOP_CACHEDLOOKUP_APV+0x87
> > lookup(da96cbcc,c0515064,0,c1854000,c06bc7c0) at lookup+0x3d6
> > namei(da96cbcc,c062cf75,267,c1854000,da96ca68) at namei+0x35a
> > vn_open_cred(da96cbcc,da96cccc,0,c15c9a80,3) at vn_open_cred+0x277
> > vn_open(da96cbcc,da96cccc,0,3,c062cf75) at vn_open+0x1e
> > kern_open(c185400,28065e40,0,1,0) at kern_open+0xb6
> > open(c185400,da96cd04,3,1,296) at open+0x1a
> > syscall(3b,3b,3b,28070000,80486b1) at syscall+0x27f
> > xint0x80_syscall() at xint0x80_syscall+0x1f
> > --- syscall(5,FreeBSD ELF32,open),
> > eip=0x28054e67,esp=0xbfbfebcc,ebp=0xbfbfec78 ---
> > 
> > With every restart, system going in single mode. What can i do to clean /var
> > filesystem and to debug these panics? Any help are welcome...
> > 
> 
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