RE: join utility segfults

[Vartika Agarwal]

Thanks Roman! BTW, I am a "she" :)

I see the RHEL5 bugzilla# in the email chain. Is there one for RHEL4 as well? I 
doubt this will be fixed in RHEL4 though but I'll open a Yahoo ticket with RH 
to make sure we are aware of which RHEL5 release the fix gets targeted to. I'll 
update the internal ticket with this information.

Vartika

-----Original Message-----
From: Roman Kirillov 
Sent: Friday, April 24, 2009 11:37 AM
To: Ondřej Vašík
Cc: Pádraig Brady; address@hidden; Vartika Agarwal
Subject: Re: join utility segfults

Chaps,

Adding Vartika from our Linux support team to the chain - he's got  
some questions to ask. In the meanwhile, he's a contact person at Y!  
regarding this.

R

-- 
Roman Kirillov
Yahoo! GeoInformatics Group

Y!Im: roman.kirillov | address@hidden | +44(0)2071311384

On 24 Apr 2009, at 11:59, Ondřej Vašík wrote:

> Ondřej Vašík wrote:
>> Pádraig Brady wrote:
>>> Roman Kirillov wrote:
>>>> address@hidden py-src]$ join s1.txt s2.txt
>>>> Segmentation fault
>>>> files: http://sigizmund.info/upload/s12.tgz (28 mb)
>>>
>>> This issue seems related to the i18n patch applied by your distro
>> Just would like to add that it's already fixed in Fedora rawhide
>> package, so I'll fix it in next Fedora coreutils update for F-9/F-10.
>> In F-8 not, it's already EOL.
>
> To keep the list informed about the conclusion...
> It turned out that it was not really fixed in rawhide at the time of  
> my
> reply. Just due to "better memory management" change in join.c done by
> Bo Borgerson between 6.12 and 7.0 was the occurance chance of the
> segfault reduced from 100% to ~10%. After investigation of the problem
> the culprit is now known. Multibyte patch was checking for exact
> equality/non-equality with the limit of the file, so the limit was
> skipped(and therefore SIGSEGV occured). Problem was fixed and built in
> koji (Rawhide branch) as
> http://koji.fedoraproject.org/koji/buildinfo?buildID=99330 and  
> reported
> against RHEL-5 as https://bugzilla.redhat.com/show_bug.cgi?id=497368 .
> Patch to fix the issue could be found in that bugzilla, should work  
> for
> affected Fedora's and RHEL (or derived Distros). Additionally the  
> issue
> could be easily workarounded by using singlebyte locales (e.g.  
> LC_ALL=C
> join).
>
> Greetings,
>         Ondřej Vašík