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Date:      Wed, 13 Feb 2002 03:17:58 -0800 (PST)
From:      Paul Crawford <paul.crawford@attcanada.com>
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   i386/34902: FTP session causes server reboot
Message-ID:  <200202131117.g1DBHwl88105@freefall.freebsd.org>

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>Number:         34902
>Category:       i386
>Synopsis:       FTP session causes server reboot
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Feb 13 03:20:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     Paul Crawford
>Release:        4.5-RELEASE
>Organization:
>Environment:
FreeBSD xxxx.mtun.phub.net.cable.rogers.com 4.5-RELEASE FreeBSD 4.5-RELEAS
E #0: Mon Jan 28 14:31:56 GMT 2002     murray@builder.freebsdmall.com:/usr/src/s
ys/compile/GENERIC  i386
>Description:
I have an automated script running on another machine that starts an FTP session on my FreeBSD server, runs the binary command and executes a put command.  Everytime this script is executed (at 3:00AM) I get the following panic and the FreeBSD server reboots:

Fatal trap 12: page fault while in kernel mode
fault virtual address	= 0x0
fault code		= supervisor write, page not present
instruction pointer	= 0x8:0xc02ddc0b
stack pointer	        = 0x10:0xc6444eb0
frame pointer	        = 0x10:0xc6444acc
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		= 1315 (sendmail)
interrupt mask		= none
trap number		= 12
panic: page fault

The fault occured in the generic kernel at the following function:
# nm -n /kernel | grep c02ddc
c02ddc60 T vm_map_stack     
>How-To-Repeat:
This is repeated the next time the script is executed.       
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted:

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