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Old 08-30-2011, 05:56 PM
Adam Williamson
 
Default Notice of intent: patching glibc

Hey, it's been a quiet week so far...

I'm intending to update glibc for F16 using provenpackager privileges
tomorrow to fix https://bugzilla.redhat.com/show_bug.cgi?id=730856 using
the patch submitted upstream at
http://sourceware.org/bugzilla/show_bug.cgi?id=13013 , if the glibc
upstream developers and/or Fedora maintainers do not respond to the bug
before then.

I raised the issue on this list on 08-08 and filed the bug on 08-15. The
patch was submitted upstream on 07-21. Andreas Schwab is very active on
this list, so it seems unlikely that he would not be aware of the issue,
yet there has been no response at all. It's downright absurd for there
to be a known and understood crasher bug, affecting all users, in such a
critical component for so long without any acknowledgement or response
by upstream or the Fedora maintainers. This and the Flash audio
corruption mess make it fairly clear that glibc maintenance is not what
it should be for such a crucial package. Given that, the only sensible
approach seems to be to go ahead and Just Fix It. Myself and Kevin Fenzi
have been using the patch for a while, so it's not untested.

glibc maintainers / developers, if you don't want me to do this, please
start giving a crap about your bugs.
--
Adam Williamson
Fedora QA Community Monkey
IRC: adamw | Twitter: AdamW_Fedora | identi.ca: adamwfedora
http://www.happyassassin.net

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Old 08-31-2011, 06:50 AM
Andreas Schwab
 
Default Notice of intent: patching glibc

Please wait until I am finished working on it. This is not a bug that
can be easily reproduced.

Andreas.

--
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Old 08-31-2011, 06:59 AM
Adam Williamson
 
Default Notice of intent: patching glibc

On Wed, 2011-08-31 at 08:50 +0200, Andreas Schwab wrote:
> Please wait until I am finished working on it. This is not a bug that
> can be easily reproduced.

The Arch report claims a fully reliable reproducer:

https://bugs.archlinux.org/task/24615

"I can 100% reliably reproduce it by creating an iptables reject rule
for DNS packets:
# iptables -A OUTPUT -p udp --dport 53 -j REJECT --reject-with
icmp-admin-prohibited
# wget http://google.com/
--2011-06-08 12:13:58-- http://google.com/
Resolving google.com... zsh: segmentation fault (core dumped)"

If, as the sourceware report claims, it's caused by servers returning
specific unusual responses, I'd guess it would also be possible to
reproduce by installing bind and intentionally configuring it 'wrong',
in such a way that it reliably returns one of the problematic responses.

If you're working on this I'm happy to leave it, but it would be good if
you would update the bug report to indicate this.
--
Adam Williamson
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Old 08-31-2011, 09:27 AM
Andreas Schwab
 
Default Notice of intent: patching glibc

Adam Williamson <awilliam@redhat.com> writes:

> On Wed, 2011-08-31 at 08:50 +0200, Andreas Schwab wrote:
>> Please wait until I am finished working on it. This is not a bug that
>> can be easily reproduced.
>
> The Arch report claims a fully reliable reproducer:
>
> https://bugs.archlinux.org/task/24615
>
> "I can 100% reliably reproduce it by creating an iptables reject rule
> for DNS packets:
> # iptables -A OUTPUT -p udp --dport 53 -j REJECT --reject-with
> icmp-admin-prohibited
> # wget http://google.com/
> --2011-06-08 12:13:58-- http://google.com/
> Resolving google.com... zsh: segmentation fault (core dumped)"

I cannot find any of that in the bug report.

Andreas.

--
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Old 08-31-2011, 09:44 AM
Zoltan Boszormenyi
 
Default Notice of intent: patching glibc

2011-08-31 11:27 keltezéssel, Andreas Schwab írta:
> Adam Williamson <awilliam@redhat.com> writes:
>
>> On Wed, 2011-08-31 at 08:50 +0200, Andreas Schwab wrote:
>>> Please wait until I am finished working on it. This is not a bug that
>>> can be easily reproduced.
>> The Arch report claims a fully reliable reproducer:
>>
>> https://bugs.archlinux.org/task/24615
>>
>> "I can 100% reliably reproduce it by creating an iptables reject rule
>> for DNS packets:
>> # iptables -A OUTPUT -p udp --dport 53 -j REJECT --reject-with
>> icmp-admin-prohibited
>> # wget http://google.com/
>> --2011-06-08 12:13:58-- http://google.com/
>> Resolving google.com... zsh: segmentation fault (core dumped)"
> I cannot find any of that in the bug report.
>
> Andreas.

https://bugs.archlinux.org/task/24615#comment78282

The "I can 100%..." is not the first sentence of the comment
but it's all in there.

Best regards,
Zoltán Böszörményi

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Old 08-31-2011, 10:00 AM
Andreas Schwab
 
Default Notice of intent: patching glibc

Zoltan Boszormenyi <zboszor@freemail.hu> writes:

> The "I can 100%..." is not the first sentence of the comment
> but it's all in there.

I'm taking about the redhat bug. How do I get to know about all this if
nobody tells me?

Andreas.

--
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Old 08-31-2011, 10:11 AM
Thomas Spura
 
Default Notice of intent: patching glibc

On Wed, 31 Aug 2011 12:00:43 +0200
Andreas Schwab wrote:

> Zoltan Boszormenyi <zboszor@freemail.hu> writes:
>
> > The "I can 100%..." is not the first sentence of the comment
> > but it's all in there.
>
> I'm taking about the redhat bug. How do I get to know about all this
> if nobody tells me?

Yep...

If this would be triaged before, then you would know of it:
https://bugzilla.redhat.com/show_bug.cgi?id=710697

But with component = pidgin not...

Greetings,
Tom
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Old 08-31-2011, 10:35 AM
Thomas Spura
 
Default Notice of intent: patching glibc

On Wed, 31 Aug 2011 12:11:54 +0200
Thomas Spura wrote:

> On Wed, 31 Aug 2011 12:00:43 +0200
> Andreas Schwab wrote:
>
> > Zoltan Boszormenyi <zboszor@freemail.hu> writes:
> >
> > > The "I can 100%..." is not the first sentence of the comment
> > > but it's all in there.
> >
> > I'm taking about the redhat bug. How do I get to know about all
> > this if nobody tells me?
>
> Yep...
>
> If this would be triaged before, then you would know of it:
> https://bugzilla.redhat.com/show_bug.cgi?id=710697
>
> But with component = pidgin not...


Sorry, my bad. Not the same, on the second look...
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Old 08-31-2011, 11:25 AM
Andreas Schwab
 
Default Notice of intent: patching glibc

Adam Williamson <awilliam@redhat.com> writes:

> The Arch report claims a fully reliable reproducer:
>
> https://bugs.archlinux.org/task/24615
>
> "I can 100% reliably reproduce it by creating an iptables reject rule
> for DNS packets:
> # iptables -A OUTPUT -p udp --dport 53 -j REJECT --reject-with
> icmp-admin-prohibited
> # wget http://google.com/
> --2011-06-08 12:13:58-- http://google.com/
> Resolving google.com... zsh: segmentation fault (core dumped)"

I'm unable to reproduce that.

Andreas.

--
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Old 08-31-2011, 12:23 PM
Matej Cepl
 
Default Notice of intent: patching glibc

Dne 31.8.2011 08:50, Andreas Schwab napsal(a):
> Please wait until I am finished working on it. This is not a bug that
> can be easily reproduced.

I don't have a good reproducer, but I believe this one

firefox -g
run<ENTER>

{ and then run Firefox for couple of hours it fails }

is pretty certain way how to get it. Happens to me couple of times a
day. Would backtrace help?

Matěj


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