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Date:      Fri, 07 Mar 2003 12:29:24 -0500 (EST)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Juli Mallett <jmallett@FreeBSD.org>
Cc:        current@FreeBSD.org
Subject:   RE: lock? panic in networking swi
Message-ID:  <XFMail.20030307122924.jhb@FreeBSD.org>
In-Reply-To: <20030307040158.A12919@FreeBSD.org>

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On 07-Mar-2003 Juli Mallett wrote:
> 
> Fatal trap 12: page fault while in kernel mode
> fault virtual address = 0x20
> fault code            = supervisor read, page not present
> instruction pointer   = 0x8:0xc01d47c6
> stack pointer         = 0x10:0xc5d33a90
> frame pointer         = 0x10:0xc5d33ab4
> 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               = 14 (swi1: net)
> trap number           = 12
> panic: page fault
> 
> No core, of course, nm says the ip is likely:
>       _mtx_unlock_sleep
> 
> Thoughts?  This is a kernel from last weekend, I'll try to get something
> more recent soon.

Probably an uninitialized mutex or some such.  A stack trace would help.

-- 

John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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