[Pkg-dspam-misc] Bug#722057: libdspam7-drv-hash: dspam segfaults [libhash_drv on _hash_drv_seek()]

[Thomas Preud'homme]

Le samedi 7 septembre 2013 21:13:24 vous avez écrit :
> On Sat, Sep 07, 2013 at 08:33:21PM +0200, Thomas Preud'homme wrote:
> > Le samedi 7 septembre 2013 09:51:28 Raphael Droz a écrit :
> > > I happened to be in a situation where I can't even fully flush the
> > > postfix
> > > queue without having Dspam to segfault.
> > > I end up installing dspam-dbg and gdb and attach to the process [I
> > > wasn't
> > > able to run the process without the init-script].
> > 
> > Symbols for libdspam7-drv-hash are found in libdspam7-dbg. Could you
> > install it and give me stacktrace you get with it?
> 
> thanks!
> sadly for now I've postsuper'ed -r ALL emails for now.
> 
> But I installed libdspam7-dbg, relink postfix to dspam and I will need
> to wait for another email to come to mailman in order reproduce it.
> 
> But could you offer me another reliable way to make Dspam dumps its core
> somewhere automatically instead of this situation where I'm waiting for
> hours through ssh with $ gdb <pid-of-dspam> ?

Unfortunetely, dspam being setgid, it can't produce coredump on segfault even 
if coredump are enabled. It seems a call to prctl with option PR_SET_DUMPABLE 
can remediate this but it means dspam would need to be recompiled.

> 
> 
> thx

Thanks for the bug report and for helping to resolve it. I'll take a look at 
the CSS problem later.

Best regards,

Thomas
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