From nobody  Mon Nov 16 09:07:11 1998
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Date: Mon, 16 Nov 1998 09:07:11 -0800 (PST)
From: dbeck@freesoft.hu
To: freebsd-gnats-submit@freebsd.org
Subject: FreeBSD 2.2.7 Accidently reboots ...
X-Send-Pr-Version: www-1.0

>Number:         8711
>Category:       kern
>Synopsis:       FreeBSD 2.2.7 Accidently reboots ...
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          closed
>Quarter:        
>Keywords:       
>Date-Required:  
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 16 09:10:00 PST 1998
>Closed-Date:    Mon Mar 29 16:05:50 PST 1999
>Last-Modified:  Mon Mar 29 16:06:44 PST 1999
>Originator:     David Beck
>Release:        2.2.7
>Organization:
FreeSoft Ltd
>Environment:
FreeBSD server.freesoft.hu 2.2.7-RELEASE FreeBSD 2.2.7-RELEASE #0: Tue Oct  6 16
>Description:
The machine accidently reboots if multiple processes randomly access
the same mmapped file. The file size is about 20 Megs. The process
is used as a memory server which keeps a lot of key/data pairs in
memory, fetches the data and sends back using TCP on request.

Ulimit -a:
core file size (blocks)  unlimited
data seg size (kbytes)   22528
file size (blocks)       unlimited
max memory size (kbytes) 30720
stack size (kbytes)      8192
cpu time (seconds)       unlimited
max user processes       179
pipe size (512 bytes)    1
open files               256
virtual memory (kbytes)  30720
>How-To-Repeat:
Try creating a huge mmaped file, and access randomly using many processes.
If you need more detailed explanation or source please contact me.
>Fix:

>Release-Note:
>Audit-Trail:

From: "David Beck" <dbeck@freesoft.hu>
To: <freebsd-gnats-submit@freebsd.org>, "David Beck" <dbeck@freesoft.hu>
Cc:  Subject: Re: kern/8711: FreeBSD 2.2.7 Accidently reboots ...
Date: Tue, 17 Nov 1998 14:31:00 +0100

 Some more infos: 
 - I tried creating a standalone program which only mmaps a file,fork,access the file 
   it is not enough 
 - I could catch the last message on the console wich was something like: 
   get_pv_entry: couldn't get_pv_entry 
   Automatic reboot in progress... 
 
 David. 
 
 
State-Changed-From-To: open->closed 
State-Changed-By: sheldonh 
State-Changed-When: Mon Mar 29 16:05:50 PST 1999 
State-Changed-Why:  
Please resubmit with precise step-by-step How-To-Repeat if problem 
exists in 3.1-STABLE or later. Thanks. 
>Unformatted:
