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Date:      Mon, 10 Aug 1998 13:49:35 +0300
From:      Alexander Litvin <archer@lucky.net>
To:        current@FreeBSD.ORG
Subject:   Re: New softupdates code panics
Message-ID:  <19980810134934.A6840@burka.carrier.kiev.ua>
In-Reply-To: <Pine.BSF.4.02.9808090947430.23796-100000@zone.syracuse.net>; from Brian Feldman on Sun, Aug 09, 1998 at 09:56:19AM -0400
References:  <Pine.BSF.4.02.9808090947430.23796-100000@zone.syracuse.net>

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Hello, Brian Feldman!

In message about "New softupdates code panics"
 on Sun, Aug 09, 1998, at 09:56:19 AM you wrote:

> Well, I had patched my ffs_softdep.c and my ufs_vnops.c according to
> Luoqi and Kirk's patches and soon after rebooting, I got a panic (I don't
> think I was removing anything at the time, but oh well there are other
> processes than the ones I watch). I've still got the full debugging kernel
> and a core dump, so if anyone wants more just ask.

The same here. My system paniced two times for some 4 hours after
I've booted kernel with Kirk's patches. The system was not very
busy, just ordinary mail/news reception (it is home computer).

Here's my backtrace:

(kgdb) exec-file /var/crash/kernel.1
(kgdb) symbol-file /var/crash/kernel.debug.0
Reading symbols from /var/crash/kernel.debug.0...done.
(kgdb) core-file /var/crash/vmcore.0
IdlePTD 2236416
initial pcb at 1d2304
panicstr: handle_workitem_remove: bad dir delta
panic messages:
---
panic: handle_workitem_remove: bad dir delta

syncing disks... 32 31 28 23 13 2 done

dumping to dev 20001, offset 196608
dump 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5
 4 3 2 1
---
#0  boot (howto=256) at ../../kern/kern_shutdown.c:286
286                                     dumppcb.pcb_cr3 = rcr3();
(kgdb) bt
#0  boot (howto=256) at ../../kern/kern_shutdown.c:286
#1  0xf01149e7 in panic (
    fmt=0xf017a1dc "handle_workitem_remove: bad dir delta")
    at ../../kern/kern_shutdown.c:427
#2  0xf017a2b2 in handle_workitem_remove (dirrem=0xf04daa80)
    at ../../ufs/ffs/ffs_softdep.c:2560
#3  0xf0177729 in softdep_process_worklist (matchmnt=0x0)
    at ../../ufs/ffs/ffs_softdep.c:534
#4  0xf0133b46 in sched_sync () at ../../kern/vfs_subr.c:977
#5  0xf010846e in kproc_start (udata=0xf01c8264) at ../../kern/init_main.c:245
#6  0xf019c4d0 in fork_trampoline ()
#7  0x66da89f0 in ?? ()
Cannot access memory at address 0x19c410bb.

> Cheers,
> Brian Feldman
> green@unixhelp.com
> P.S. This is the first softupdates panic I've had in a _long_ time, so
> good job you guys!

--- 
Fairy Tale, n.:
        A horror story to prepare children for the newspapers.

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