Date: Fri, 8 Aug 2003 15:36:57 +0200 From: Andre Albsmeier <andre.albsmeier@siemens.com> To: othermark <atkin901@yahoo.com> Cc: freebsd-stable@freebsd.org Subject: Re: stable libmilter leaks kqueue descriptors? Message-ID: <20030808133657.GA42855@curry.mchp.siemens.de> In-Reply-To: <slrnbifq2n.13vk.atkin901@adkinson245.f5net.com> References: <slrnbidfm6.11jf.atkin901@adkinson245.f5net.com> <slrnbifq2n.13vk.atkin901@adkinson245.f5net.com>
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On Wed, 30-Jul-2003 at 15:46:24 +0000, othermark wrote: > In article <slrnbidfm6.11jf.atkin901@adkinson245.f5net.com>, othermark wrote: > > 2. have some ideas on how to track down this leakage? I've looked > > at the dccm source and it seems to be using milter correctly > > (as it was working fine with an older version of sendmail), but > > maybe other excellent users have tracked down kqueue leakage > > before. > > I found this pr, which seems to be a likely candidate. > > http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/55007 > > dccm is threaded, but libmilter does not call kqueue directly, but > based on other searches, I'm suspecting that various calls are > implemented using kqueue, kevent (select(), poll(), etc..). I see > some evidence of this in the sources, but I'm not familiar enough > with the kernel code to say absolutely that these code paths are > executed. I have a self-written milter app. Today I upgraded to the recent -STABLE and now it eats KQUEUE filedscriptors like crazy. I tried to MFC the fix in lib/libc_r/uthread/uthread_kqueue.c but I always get complaints about multiple definition of `_kqueue': building shared library libc_r.so.4 kqueue.So: In function `_kqueue': kqueue.So(.text+0x14): multiple definition of `_kqueue' uthread_kqueue.So(.text+0x0): first defined here *** Error code 1 Seems it conflicts with /usr/obj/lib/libc_r/kqueue.S which is generated everytime from scratch during the build. I assume that I have to add kqueue.o to HIDDEN_SYSCALLS but I am not sure if this is correct and what it will break :-) -Andre
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