Date: Tue, 18 Dec 2001 23:32:15 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Brady Montz <bradym@mail.hydrologue.com> Cc: Chad David <davidc@acns.ab.ca>, Richard Nyberg <rnyberg@it.su.se>, David Wolfskill <david@catwhisker.org>, freebsd-stable@FreeBSD.ORG Subject: Re: 4.4-STABLE crashes - suspects new ata-driver over wd-drivers Message-ID: <200112190732.fBJ7WFQ86868@apollo.backplane.com> References: <20011217142115.A45797@colnta.acns.ab.ca> <200112172133.fBHLXJg39627@bunrab.catwhisker.org> <20011217144541.A45973@colnta.acns.ab.ca> <20011218094330.A10601@gromit.it.su.se> <200112180857.fBI8vNh68173@apollo.backplane.com> <20011218023630.A5190@ranger.acns.ab.ca> <200112181920.fBIJKRt70523@apollo.backplane.com> <200112190757.fBJ7veY02579@mail.hydrologue.com>
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Any chance you can get a kernel core dump and a debug kernel
(kernel.debug) to go along with it?
The only time I've seen something similar to this has been when
the VM Page hash table has gotten corrupted, and the last time I
tracked that down a bit turned out to be flipped in memory which
led me to believe that it was a hard memory error of some sort.
-Matt
Matthew Dillon
<dillon@backplane.com>
:OK, did that, and I caught myself a crash. Here's what I copied down
:from the debugger (by hand, so there might be errors):
:
:Fatal trap 12: page fault while in kernel mode
:fault virtual address = 0x13
:fault code = supervisor read, page not present
:instruction pointer = 0x8:0xc023c7d0
:stack pointer = 0x10:0xc89f387c
:frame pointer = 0x10:0xc89f3884
:code segment = base 0x0, limit 0xfffff, type 0x1b
: = DPL 0, pres 1, def32 1, gran 1
:processor eflags = interrupt enabled, resume, IOPL=0
:current process = 7302 (sh)
:interrupt mask = net bio cam
:kernel: type 12 trap, code 0
:stopped at vm_page_lookup+0x2c: cmpl %ebx, 0x14(%edx)
:
:stack trace:
:
:vm_page_lookup (c8acd540,0)
:vm_object_collapse (c8acd540)
:vm_object_deallocate (c8c52a20)
:vm_map_entry_delete
:vm_map_delete
:vm_map_remove
:exec_new_vmspace
:exec_elf_imgact
:execve
:syscall
:xint 0x80_syscall
:
:--
: Brady Montz
: bradym@balestra.org
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