Subject: Re: Disturbing behaviour on 1.6 without linux emulation
To: Feico Dillema <feico@pasta.cs.uit.no>
From: Jaromir Dolecek <jdolecek@netbsd.org>
List: tech-kern
Date: 10/22/2002 16:27:56
Remove COMPAT_11 and COMPAT_12 from your kernel. The unrecognized ELF
binaries are run as 'native' ones when these are in kernel (which they
are by default). The linux ldconfig probably uses some syscall which
happens to have same number as our settimeofday(2), and gets confused
by the return value.
Feico Dillema wrote:
> Hi,
>
> Just by accident discovered something weird on a NetBSD 1.6 i386 machine.
>
> # date
> Tue Oct 22 15:48:05 CEST 2002
> # /usr/pkg/emul/linux/sbin/ldconfig
> ^C
> # date
> Thu Jan 1 01:00:02 CET 1970
>
> This machine runs a kernel without linux emulation, and running the
> linux ldconfig binary makes it go in an endless loop. The suprising
> thing is that it also resets the date (only when executed as root).
> This is reproducible.
>
> I wonder whether this indicates a kernel bug (security?) that may have
> corrupted other kernel memory also. (securelevel is at 1 on this
> machine). Would do you think?
>
> Feico.
>
--
Jaromir Dolecek <jdolecek@NetBSD.org> http://www.NetBSD.org/
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