[PATCH 5/9] signal: Protect parent child relationships by childs siglock

[Sebastian Andrzej Siewior]

On 2022-04-26 17:52:07 [-0500], Eric W. Biederman wrote:
> The functions ptrace_stop and do_signal_stop have to drop siglock
> and grab tasklist_lock because the parent/child relation ship
> is guarded by siglock and not siglock.

 "is guarded by tasklist_lock and not siglock." ?

> Simplify things by guarding the parent/child relationship
> with siglock.  For the most part this just requires a little bit
> of code motion.  In a couple of places more locking was needed.
> 
> 
> Signed-off-by: "Eric W. Biederman" <ebiederm at xmission.com>

Sebastian