Re: [PATCH] x86-64: ptrace ia32 BP fix

[Andi Kleen]

> Wouldn't this  to botch a debugger which supported both backtracing and
> PTRACE_SYSCALL, when stopped in a syscall?  We have unwind information
> for the VDSO and it's not going to tell us that the kernel has done
> something clever to the value of %ebp.

The kernel is indeed not supposed to modify any input
registers of syscalls (ok except rcx, but that is unavoidable)

-Andi
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/