Re: Dynamic System Calls & System Call Hijacking

From: Pavel Machek
Date: Thu Apr 22 2004 - 14:55:18 EST


> - Can't recompile the kernel, otherwise you gonna lose RedHat guarantee ?
> Or some ISVs like whose name starts with an "O" and terminates with "racle"
> ain't gonna support it ?

> + No problem, I'll load your syscall in a module.

Well, by forcing syscall in, you loose your guarantee, too.
cat /dev/urandom > /dev/kmem

"RedHat, help, my machine crashed."

> Your remarks will be appreciated.

I hope it at least taints the kernel.

And you did test on smp kernel, trying to race syscall calling against
your module load/unload, right?

64 bytes from icmp_seq=28 ttl=51 time=448769.1 ms

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