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Date:      Wed, 7 Jan 1998 14:19:25 -0600 (CST)
From:      Kevin Day <toasty@home.dragondata.com>
To:        ady@warpnet.ro (Penisoara Adrian)
Cc:        freebsd-current@freebsd.org, freebsd-questions@freebsd.org
Subject:   Re: Fatal trap 12 & debugging info ??
Message-ID:  <199801072019.OAA18158@home.dragondata.com>
In-Reply-To: <Pine.BSF.3.96.980107205607.316A-100000@ady.warpnet.ro> from Penisoara Adrian at "Jan 7, 98 09:13:04 pm"

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> Hi,
> 
>  For quite a while I'm bugged by sudden panics/reboots (all of them are
> 'fatal trap 12'); here it is the last one I had (hand rewritten):
> 
> ============================================================
> 
> Fatal trap 12: page fault while in kernel mode
> mp_lock = 00000002; cpuid = 0; lapic.id = 00000000
> fault virtual address   = 0x0
> fault code              = supervisor read, page not present
> instruction pointer     = 0x8:0xf01a9273
> stack pointer           = 0x10:0xf49cbe48
> frame pointer           = 0x10:0xf49cbe54
> 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         = 1594 (cron)
> interrupt mask          = net tty bio cam  <- SMP:XXX
> trap number             = 12
> panic: page fault
> mp_lock = 00000002; cpuid = 0; lapic.id = 00000000
> boot called on cpu#0
> 
> syncing disks...
> 

I've had about 5 panics about exactly the same....

A trace shows free, execve, syscall, xsyscall then the debugger locks up
before showing any more...




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