Date: Tue, 18 Jan 2011 16:46:12 +0200 From: Kostik Belousov <kostikbel@gmail.com> To: Beat G?tzi <beat@chruetertee.ch> Cc: current@freebsd.org Subject: Re: Running linux ldconfig on tmpfs results in unkillable process Message-ID: <20110118144611.GP2518@deviant.kiev.zoral.com.ua> In-Reply-To: <4D35A0BB.3010601@chruetertee.ch> References: <4D35A0BB.3010601@chruetertee.ch>
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--tB3UQx9o7itSJcWB Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Jan 18, 2011 at 03:16:27PM +0100, Beat G?tzi wrote: > Hi, >=20 > I've a tinderbox which uses tmpfs to build ports. Every time I build a > port which executes linux ldconfig it results in an unkillable process > which uses 100% CPU. The problem is reproduceable without tinderbox: >=20 > # uname -a > FreeBSD daedalus.network.local 9.0-CURRENT FreeBSD 9.0-CURRENT #3 > r216761: Tue Dec 28 15:32:26 CET 2010 > root@daedalus.network.local:/usr/obj/usr/src/sys/GENERIC i386 > # mkdir /compat/test > # mount -t tmpfs tmpfs /compat/test > # cp -Rp /compat/linux/* /compat/test/ > # mount -t linprocfs linprocfs /compat/test/proc > # /compat/linux/sbin/ldconfig -r /compat/test/ > # pgrep ldconfig > 3449 > # procstat -i 3449 | grep KILL > 3449 ldconfig KILL --- > # kill -9 3449 > # procstat -i 3449 | grep KILL > 3449 ldconfig KILL P-- >=20 > >From top(1): > PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND > 3449 root 1 44 0 992K 712K CPU1 1 10:06 100.00% ldconfig >=20 > When I reboot the machine it hangs after "All buffers synced.". >=20 > I've uploaded some additional output of procstat and ktrace here: > http://people.freebsd.org/~beat/logs/linux-ldconfig-tmpfs.txt >=20 > Anyone knows how to fix this? kdump for the trace of the linux binary is a garbage. You need to use linux_kdump (from ports). I think that your process is looping in the kernel, you can confirm this by dropping in the ddb and doing "bt <pid>". --tB3UQx9o7itSJcWB Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iEYEARECAAYFAk01p7MACgkQC3+MBN1Mb4ibqQCeIWbm3HkyTJzfItl0a8belSq3 yFsAoJbFfZTTdEg1CXOM/FVgNIzaja0h =OVew -----END PGP SIGNATURE----- --tB3UQx9o7itSJcWB--
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