From: Arnd Bergmann <arnd@arndb.de>
To: Adrian Bunk <bunk@stusta.de>
Cc: linux-kernel@vger.kernel.org, linux-msdos@vger.kernel.org,
Arjan van de Ven <arjan@infradead.org>,
Ingo Molnar <mingo@elte.hu>
Subject: Re: 2.6.12-rc1 breaks dosemu
Date: Fri, 25 Mar 2005 19:52:31 +0100 [thread overview]
Message-ID: <200503251952.33558.arnd@arndb.de> (raw)
In-Reply-To: <20050320021141.GA4449@stusta.de>
On Sünndag 20 März 2005 03:11, Adrian Bunk wrote:
> xdosemu 1.2.2 runs fine under 2.6.11.5, but fails under 2.6.12-rc1 with
> the following error:
>
> <-- snip -->
>
> $ xdosemu
> ERROR: cpu exception in dosemu code outside of VM86()!
> trapno: 0x0e errorcode: 0x00000005 cr2: 0xffffff8e
> eip: 0x000069ee esp: 0xbfdbffcc 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
I had the same problem and found out that disabling
address space randomization (echo 0 >
/proc/sys/kernel/randomize_va_space) solves this
reliably. With randomization enabled, I can start up
dosemu maybe 1 out of 100 times.
I guess the randomization patches changed the mapping
in a way that dosemu did not expect.
Arnd <><
next prev parent reply other threads:[~2005-03-25 18:56 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-20 2:11 2.6.12-rc1 breaks dosemu Adrian Bunk
2005-03-20 3:04 ` Gene Heskett
2005-03-25 18:52 ` Arnd Bergmann [this message]
2005-03-25 19:14 ` Arjan van de Ven
2005-03-25 22:54 ` Arnd Bergmann
2005-03-26 8:10 ` Arjan van de Ven
2005-03-26 8:18 ` Bart Oldeman
2005-03-26 13:49 ` Arnd Bergmann
2005-03-26 14:28 ` Arjan van de Ven
2005-03-26 14:35 ` Arjan van de Ven
2005-03-26 8:25 ` Arjan van de Ven
2005-03-26 8:32 ` Bart Oldeman
2005-03-26 9:28 ` Arjan van de Ven
2005-03-31 6:43 ` Bart Oldeman
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