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

[Eric W. Biederman]

Sebastian Andrzej Siewior <bigeasy at linutronix.de> writes:

> 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." ?

Yes.   Thank you.  I will fix that.

>> 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

Eric