Re: ptrace in 2.6.5

From: Davide Libenzi
Date: Tue May 11 2004 - 02:01:31 EST

On Mon, 10 May 2004, Davide Libenzi wrote:

> On the kernel side, this would be pretty much solved by issuing a ptrace
> op, with a modified EIP (+2) on return from a syscall (if in single-step
> mode).

Actaully, the EIP should not be changed (since it already points to the
intruction following INT 0x80) and I believe it is sufficent to replace
in the system call return path. This should generate a ptrace trap with
EIP pointing to the next instruction following INT 0x80.

- Davide

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