This is the mail archive of the
libc-help@sourceware.org
mailing list for the glibc project.
nscd frequent assertion failure...
- From: "Daniel J Blueman" <daniel dot blueman at gmail dot com>
- To: "Ubuntu Core developers" <ubuntu-devel-discuss at lists dot ubuntu dot com>, libc-help at sourceware dot org
- Cc: drepper at redhat dot com, "Petr Baudis" <pasky at suse dot cz>, "Pierre Habouzit" <madcoder at debian dot org>
- Date: Sat, 22 Nov 2008 12:54:18 +0000
- Subject: nscd frequent assertion failure...
- Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:cc:mime-version:content-type:content-transfer-encoding :content-disposition; bh=HZqR/ucYXnu5G0mAhTUhX1Ogm5Aixa0jtvxcT33EXuo=; b=e/idzdiQ1tJuYCfCePurC1FVyK6k/WWo3GAkAtXuUxrzoIzJJc0+xE8LmDiJQkp+c9 zwqHQdKztGZVTHBFHYHsSO9kE+imdyXojGaetinMemiGLJeTQ4k8iX9/lPkAe+iUW2ts qTu9NRH4sxYwejQuW1qpdlizbLQSlvWbaL7Ck=
- Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:mime-version:content-type :content-transfer-encoding:content-disposition; b=Jzw57RALNgfg5ld+r/ficruwp+qoSr0m2vABCo158LSkt6WLW5/a2cBMJ5VsCALZM3 p8DZGxxR1GsoVuHBzCTVZlhWUZDTedkBUhCv0XdYZQCVsMTfz3xmI/IcK/2oFCQERMHA PYndV+AV768um9tUeC98ROStyP4bjVKp05d9Q=
glibc 2.8's name-service cache daemon (nscd) is seeing frequent
assertion failure [1], at least in Ubuntu 8.10, due to internal
consistency checks failing (memory object misalignment). Right now in
the 8.10 Intrepid cycle, this is 100% of the crashes I've had over the
last week's workflow.
Since nscd is not installed by default on many distros, this isn't
getting the minimum exposure and attention to get addressed, sadly.
I've been unable to find any fixed/unfixed bug reports, and I've
tracked this with valgrind [2].
Is anyone else seeing this, and has any suggestions about the best way forward?
On a related note, (at least) all debian-derived distros disable
host-caching, due to another issue [3], still not resolved.
Any suggestions?
Daniel
--- [1]
nscd: mem.c:335: gc: Assertion `off_alloc <= db->head->first_free' failed.
--- [2]
https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/256157
--- [3]
http://sourceware.org/bugzilla/show_bug.cgi?id=4428
--
Daniel J Blueman