dosemu crashes under 2.6.12-rc4

dosemu crashes under 2.6.12-rc4

[gaa]

"dosemu" does not work under kernel 2.6.12-rc4(but works under 2.6.11.7).
Next lines are stdout of crashed dosemu process:

Linux DOS emulator 1.2.1.0 $Date: 2004/03/06$
Last configured at Thu Jun 24 01:04:04 UTC 2004 on linux
This is work in progress.
Please test against a recent version before reporting bugs and problems.
Submit Bug Reports, Patches & New Code to linux-msdos@vger.kernel.org or via
the SourceForge tracking system at http://www.sourceforge.net/projects/dosemu
                                                09 2002 21:55:55]
Kernel compatibility 7.10 - WATCOMC - FAT32 support

(C) Copyright 1995-2002 Pasquale J. Villani and The FreeDOS Project.
All Rights Reserved. This is free software and comes with ABSOLUTELY NO
WARRANTY; you can redistribute it and/or modify it under the terms of the
GNU General Public License as published by the Free Software Foundation;
either version 2, or (at your option) any later version.
C: HD1 Pri:1 CHS=    0-1-1 start =     0MB,size =  392
Kernel: allocated 41 Diskbuffers = 21812 Bytes in HMA
[dosemu EMS 4.0 driver installed]
ERROR: cpu exception in dosemu code outside of VM86()!
trapno: 0x0e  errorcode: 0x00000005  cr2: 0xffffff8e
eip: 0x000069ee  esp: 0xbfedffcc  eflags: 0x00010246
cs: 0x0073  ds: 0x007b  es: 0x007b  ss: 0x007b
Page fault: read instruction to linear address: 0xffffff8e
CPU was in user mode
Exception was caused by insufficient privilege
ERROR: leavedos() called from within a signal context!



Alexander Galanin aka gaa
11.05.2005

Re: dosemu crashes under 2.6.12-rc4

[Adrian Bunk]

On Wed, May 11, 2005 at 10:03:40AM +0400, gaa wrote:

> "dosemu" does not work under kernel 2.6.12-rc4(but works under 2.6.11.7).
> Next lines are stdout of crashed dosemu process:
> 
> Linux DOS emulator 1.2.1.0 $Date: 2004/03/06$
>...

That's a known problem of the dosemu in Debian unstable/sarge together 
with recent kernels.

Workaround:
  echo 0 > /proc/sys/kernel/randomize_va_space

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

Re: dosemu crashes under 2.6.12-rc4

[Arjan van de Ven]

On Wed, 2005-05-11 at 10:03 +0400, gaa wrote:
> "dosemu" does not work under kernel 2.6.12-rc4(but works under 2.6.11.7).
> Next lines are stdout of crashed dosemu process:

this is a bug in dosemu with a *very* bad threading library
implementation (fixed in more recent dosemu). THat threading lib makes
assumptions that even with newer glibc may break, or with 4G/4G patch or
with 2G/2G or with.. well just about anything.