lkml.org 
[lkml]   [2011]   [Feb]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 1/1] ptrace: make sure do_wait() won't hang after PTRACE_ATTACH
Hello,

On Mon, Feb 14, 2011 at 04:06:56PM +0100, Oleg Nesterov wrote:
> This was (very briefly) discussed recently. Probably we can implement
> PTRACE_DETACH_RUNNING (the name is random) which doesn't require the
> stopped tracee but ignores the "data" argument.

I think the root problem is not how ptrace detaches but how ptrace
attaches and stops tracee. If we have a clean way to seize the
tracee, how we detach doesn't really matter. For example, a new
ptrace call which stops the tracee and puts it in a ptrace command
ready state without messing with the signal and group stop stuff.

Thanks.

--
tejun


\
 
 \ /
  Last update: 2011-02-14 16:23    [W:0.184 / U:0.816 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site