Re: sophie deadlock

  This message is in MIME format.  The first part should be readable text,
  while the remaining parts are likely unreadable without MIME-aware tools.

--1635799168-1079598246-1155517475=:20445
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII; FORMAT=flowed
Content-ID: <[email protected]>

On Thu, 20 Jul 2006, Martin Zuziak wrote:

> There seems to be a problem in sophie which leads to a deadlock on 
> receiving SIGHUP.
>
> The SIGHUP handler does too much work. It calls sophie_print which does 
> some syslog stuff and calls functions which aren't safe. I'm seeing this 
> problem every few months on my mail server (Suse Linux 9.2 with a 2.6.8 
> kernel and glibc-2.3.3) and have reproduced it on Suse 10.1 with a 
> 2.6.16 kernel and glibc-2.4.
>
> If I change the SIGHUP handler to just raise a flag and test on that 
> flag in the main for-loop the problem goes away.

I can confirm this and am using a similar work-around. The patch I'm using 
is attached.  Can this (or something better) be incorporated upstream?


-Chris
--1635799168-1079598246-1155517475=:20445
Content-Type: TEXT/PLAIN; CHARSET=US-ASCII; NAME=sophie.c.diff
Content-ID: <[email protected]>
Content-Description: 
Content-Disposition: ATTACHMENT; FILENAME=sophie.c.diff
Content-Transfer-Encoding: BASE64
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--1635799168-1079598246-1155517475=:20445
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Disposition: inline
Content-Transfer-Encoding: 7bit

_______________________________________________
vtools mailing list
[email protected]
http://www.vanja.com/list/listinfo.cgi/vtools

--1635799168-1079598246-1155517475=:20445--