[pkg-fetchmail-maint] Bug#513695: Bug#513695: fetchmail: race in MSG_PEEK

[Matthias Andree]

Am 06.03.2009, 00:14 Uhr, schrieb Frans Pop <elendil at planet.nl>:

> On Tuesday 03 March 2009, I wrote:
>> I have an strace and tcpdump for a fetchmail run that produces the
>> error. I don't see any URG data in the dump.
>>
>> The syslog shows (account name removed):
>> Mar  3 20:38:01 elrond fetchmail[10659]: 3 messages (1 seen) for  
>> xxxxxxx at pop.planet.nl (29679 octets).
>> Mar  3 20:38:01 elrond kernel: TCP(fetchmail:10659): Application bug,  
>> race in MSG_PEEK.
>> Mar  3 20:38:01 elrond fetchmail[10659]: reading message  
>> xxxxxxx at pop.wxs.nl:2 of 3 (19564 octets) flushed
>> Mar  3 20:38:01 elrond fetchmail[10659]: reading message  
>> xxxxxxx at pop.wxs.nl:3 of 3 (4644 octets) flushed
>>
>> As the traces contain private data, I don't want to attach them in the
>> BR or publish them, but if people want to analyze them, please mail me
>> privately and I'll send you the data.
>
> Nobody interested in the traces?
>
> Here's how often I get the errors:
> $ zgrep -h PEEK /var/log/syslog* | awk '{print $1 " " $2}' | sort|uniq -c
>      18 Mar 1
>       9 Mar 2
>      23 Mar 3
>      25 Mar 4
>      30 Mar 5
>
> That's with about 5 mail fetches per hour (some of which will be empty).
> On Mar 2 I had some fetches disabled for debugging.

JFTR: I've asked Frans off-records for a copy of the data; but I as  
upstream maintainer am not working full-time on fetchmail, and the same  
holds for the Debian packagers: spare-time effort.

-- 
Matthias Andree