Subject: Re: savecore -c crashes kernel (-current on i386)
To: Juergen Hannken-Illjes <hannken@eis.cs.tu-bs.de>
From: Markus W Kilbinger <mk@kilbi.de>
List: current-users
Date: 10/08/2007 09:58:34
>>>>> "Juergen" == Juergen Hannken-Illjes <hannken@eis.cs.tu-bs.de> writes:
>> So, maybe it's related to the 4.99.31 -> 4.99.32 changes...
Juergen> Quite sure. Could you please (from ddb):
Here's the output from my crashes:
[...]
Starting amavisd.
trap: TLB miss (load or instr. fetch) in kernel mode
status=0xff03, cause=0x8, epc=0x801eee00, vaddr=0
pid=0 cmd=system usp=0x0 ksp=0xcc6e7d50
Stopped in pid 0.6 (system) at netbsd:specificdata_getspecific: lw v
0,0(a1)
db> t
specificdata_getspecific+0 (c9851060,920,2,8fd8cfd8) ra 8022bf24 sz 0
fscow_run+44 (c9851060,920,2,8fd8cfd8) ra 80236618 sz 40
spec_strategy+98 (c9851060,920,2,8fd8cfd8) ra 80230668 sz 32
VOP_STRATEGY+2c (8fdc2dc0,8fd8c990,2,8fd8cfd8) ra 80198150 sz 40
uvm_swap_io+120 (8fdc2dc0,8fd8c990,2,8fd8cfd8) ra 80195994 sz 56
swapcluster_flush+70 (8fdc2dc0,8fd8c990,2,8fd8cfd8) ra 80195d7c sz 32
uvm_pageout+3cc (8fdc2dc0,8fd8c990,2,8fd8cfd8) ra 802767c0 sz 176
mips3_lwp_trampoline+20 (8fdc2dc0,8fd8c990,2,8fd8cfd8) ra 0 sz 24
User-level: pid 0.6
Juergen> show buf <1. arg of fscow_run>
db> show buf 0xc9851060
vp 0x2 lblkno 0x0 blkno 0x500000004 rawblkno 0x8a9c928000000006 dev 0x1
error 3 flags 0x0
bufsize 0xc98518c0 bcount 0x8ff51def resid 0x0
data 0x2 saveaddr 0x4 dep 0x3
iodone 0x0
Juergen> show vnode <vnode og this buf>
db> show vnode 0x2
trap: address error (load or I-fetch) in kernel mode
status=0x3, cause=0x9810, epc=0x80189a20, vaddr=0x2
pid=0 cmd=system usp=0x0 ksp=0xcc6e7990
Stopped in pid 0.6 (system) at netbsd:uvm_object_printit+0x18: lw v0,0(a0)
I hope I've understood/interpreted your commands correctly.
Markus.