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Re: [PATCH] Reinitialize dl_load_write_lock on fork (bug 19282)

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
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