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List:       openbsd-bugs
Subject:    kernel/2825: Kernel panic in uvm code
From:       workc () cuug ! ab ! ca
Date:       2002-07-18 11:59:47
[Download RAW message or body]

>Number:         2825
>Category:       kernel
>Synopsis:       Kernel panic in uvm code
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jul 18 12:10:01 MDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     Clinton Work
>Release:        3.1
>Organization:
Calgary UNIX Users' Group
>Environment:
	System      : OpenBSD 3.1
	Architecture: OpenBSD.i386
	Machine     : i386 (Athalon 1.2Ghz, 512MB ram)
>Description:

Installed OpenBSD 3.1 from cdrom onto the new mail server machine. The
box ran fine until a considerable load was put onto the machine and it
crashed once with a kernel panic. I couldn't capture the complete trace
and ps output due to the PC console. 

This crash matches open bug report kernel/2817.

The openbsd server is configured with NFS, sendmail, smtpd, uw-imap,
sshd. At the time of the kernel panic the box had 7 smtpd processes,
50 smtpfwdd processes, and 50 sendmail processes plus the regular
daemons. The box has 512MB of ram and it didn't run out of memory
during the kernel panic.

Trace output from ddb after the kernel panic:

Error:
tmp & tmp->space => length in
 /usr/src/sys/arch/i386/compile/GENERIC/../../../../uvm/uvm_map.c (Line 12)

Call traceback:
panic
__assert
_uvm_map_findspace
_uvm_map_align
_uvm_map
_uvm_km_valloc
_fork1
_sys_fork
_syscall at syscall(0x242)


>How-To-Repeat:

   Haven't been able to reproduce the kernel panic again.

>Fix:

  N/A.

>Release-Note:
>Audit-Trail:
>Unformatted:

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