Messages in this thread |  | | | Date | Mon, 10 May 2004 23:27:34 -0700 (PDT) | | From | Davide Libenzi <> | | Subject | Re: ptrace in 2.6.5 |
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 the test for _TIF_SYSCALL_TRACE with (_TIF_SYSCALL_TRACE | TIF_SINGLESTEP) 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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