Re: Emulating i486 on i386 (was: TSCs are a no-no on i386)

From: Alan Cox (alan_at_lxorguk.ukuu.org.uk)
Date: 07/31/03

  • Next message: Jens Axboe: "Re: 2.6.0-test2+ext3+dbench=Buffer I/O error" 
    To: Jan-Benedict Glaw <jbglaw@lug-owl.de>
Date:	31 Jul 2003 12:51:09 +0100

    On Iau, 2003-07-31 at 12:38, Jan-Benedict Glaw wrote:
    > Thanks for that. In the meantime, I've started to give a try to the
    > userspace version (using a LD_PRELOAD lib). My current Problem:
    >
    > amtus:~/sigill_catcher# LD_PRELOAD=./libsigill.so ls
    > sigill.c:_init():69: sigill started, sigaction() = 0
    > build.sh intercept.h libsigill.so run.sh sigill.c sigill.o
    > amtus:~/sigill_catcher# LD_PRELOAD=./libsigill.so apt-get update
    > Illegal instruction
    >
    > See? It's loaded at the "ls" call, but it seems to be not loaded for
    > apt-get.

    Remember you need to overload signal setting functions like sigaction.
    My guess is apt decided to disable your signal and you didnt stop it

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