[PATCH] Reinitialize dl_load_write_lock on fork (bug 19282)

[Florian Weimer]

On 10/05/2017 05:39 PM, Andreas Schwab wrote:
> On Okt 05 2017, Florian Weimer <fweimer@redhat.com> wrote:
> 
>> On 10/05/2017 05:17 PM, Andreas Schwab wrote:
>>> -      /* Reset the lock the dynamic loader uses to protect its data.  */
>>> +      /* Reset the locks the dynamic loader uses to protect its data.  */
>>>          __rtld_lock_initialize (GL(dl_load_lock));
>>> +      __rtld_lock_initialize (GL(dl_load_write_lock));
>>
>> I'm pretty sure that the child now sees corrupted a dynamic linker state
>> instead of hanging.
> 
> That's a good point, though this problem already existed before the
> introduction of dl_load_write_lock.

Why does this make a difference?

Thanks,
Florian