Christoph Hellwig <[email protected]> wrote:
>
> > In arch/ia64/ia32/sys_ia32.c this patch will cause PTRACE_TRACEME requests
> > to be handled by ptrace_request()
>
> you mean ptrace_get_task_struct?
No, I was referring to this code:
asmlinkage long
sys32_ptrace (int request, pid_t pid, unsigned int addr, unsigned int data)
{
struct task_struct *child;
unsigned int value, tmp;
long i, ret;
lock_kernel();
if (request == PTRACE_TRACEME) {
ret = sys_ptrace(request, pid, addr, data);
goto out;
}
Your patch removes the PTRACE_TRACEME special-case. Consequently
sys32_ptrace() will fall all the way down to the default: case of the
switch statement and will use ptrace_request() instead. And
ptrace_request() doesn't handle PTRACE_TRACEME, so I think it's busted.
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