Hi, This bug may be related (and has a reproducing script) : https://bugs.php.net/bug.php?id=63734
On Sat, Jun 22, 2013 at 4:41 AM, Andi Gutmans <a...@zend.com> wrote: > >-----Original Message----- > >From: Stas Malyshev [mailto:smalys...@sugarcrm.com] > >Sent: Thursday, June 20, 2013 8:20 PM > >To: Anthony Ferrara > >Cc: Laruence; internals@lists.php.net > >Subject: Re: [PHP-DEV] Disabling the GC during shutdown > > > >> However, that's not really fixing the situation either, as the zval is > >> still getting nuked (but only partially). > > > >If there's a memory overwrite or use-after-free is going on, this patch > is not a > >complete solution - it relies on the fact that "bad" data will be always > out of > >range of "good" data. I see no way to ensure that - so if there's an > overwrite > >that writes garbage inside the object there will be situations where the > >garbage looks exactly like a valid object ID and it will still crash, but > it would > >be significantly harder to reproduce. > >So I think before patching it we need to get to the root cause and figure > out > >why it happens and what causes it, instead of partially fixing the > symptom > > I agree with that. I think it'd be a mistake to submit any patch without > us understanding root cause. > We may cover up a bug which will resurface elsewhere... > Hopefully you can find a way to pin it down. > > Thanks for putting this much effort into it! > Andi > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > > >
