From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ben Hutchings Subject: Re: Bug#577640: linux-image-2.6.33-2-amd64: Kernel warnings in netns thread Date: Sun, 18 Apr 2010 18:33:25 +0100 Message-ID: <1271612005.3679.248.camel@localhost> References: <20100413112017.8505.36380.reportbug@japot.localdomain> Mime-Version: 1.0 Content-Type: multipart/signed; micalg="pgp-sha1"; protocol="application/pgp-signature"; boundary="=-rWvstrAH0LFbnoRb/H2e" Cc: netdev , "Eric W. Biederman" , Alexey Dobriyan To: Martin Ferrari , 577640@bugs.debian.org Return-path: Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:55438 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751442Ab0DRRdm (ORCPT ); Sun, 18 Apr 2010 13:33:42 -0400 In-Reply-To: <20100413112017.8505.36380.reportbug@japot.localdomain> Sender: netdev-owner@vger.kernel.org List-ID: --=-rWvstrAH0LFbnoRb/H2e Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2010-04-13 at 13:20 +0200, Martin Ferrari wrote: > Package: linux-2.6 > Version: 2.6.33-1~experimental.4 > Severity: normal > Tags: experimental >=20 > Firstly, please note that I'm running this inside a Qemu, but I > imagine that it should not change things much. >=20 > I installed 2.6.33 to try out the new improvements regarding network > namespaces, and while creating and killing hundreds of them, I got > many warnings from the kernel that might indicate a bug somewhere. > Please see the log already included by reportbug. I'm forwarding this to the upstream maintainers. Ben. [...] > [ 6696.035331] ------------[ cut here ]------------ > [ 6696.035334] WARNING: at /build/mattems-linux-2.6_2.6.33-1~experimental= .4-amd64-ieqSsa/linux-2.6-2.6.33-1~experimental.4/debian/build/source_amd64= _none/kernel/sysctl.c:1894 unregister_sysctl_table+0xa6/0xd1() > [ 6696.035336] Hardware name:=20 > [ 6696.035337] Modules linked in: veth loop parport_pc parport snd_pcm tp= m_tis evdev snd_timer i2c_piix4 tpm tpm_bios button processor serio_raw i2c= _core snd soundcore snd_page_alloc pcspkr psmouse ext3 jbd mbcache sg sr_mo= d cdrom sd_mod crc_t10dif ata_generic ata_piix libata floppy 8139cp thermal= thermal_sys 8139too mii scsi_mod [last unloaded: veth] > [ 6696.035354] Pid: 9, comm: netns Tainted: G W 2.6.33-2-amd64 #1 > [ 6696.035355] Call Trace: > [ 6696.035357] [] ? unregister_sysctl_table+0xa6/0xd1 > [ 6696.035360] [] ? unregister_sysctl_table+0xa6/0xd1 > [ 6696.035362] [] ? warn_slowpath_common+0x77/0xa3 > [ 6696.035364] [] ? unregister_sysctl_table+0xa6/0xd1 > [ 6696.035367] [] ? addrconf_ifdown+0x26f/0x2cc > [ 6696.035369] [] ? neigh_sysctl_unregister+0x1a/0x31 > [ 6696.035371] [] ? addrconf_ifdown+0x27b/0x2cc > [ 6696.035374] [] ? addrconf_notify+0x714/0x7ea > [ 6696.035376] [] ? extract_entropy+0x6a/0x125 > [ 6696.035379] [] ? lock_timer_base+0x26/0x4b > [ 6696.035382] [] ? skb_dequeue+0x50/0x58 > [ 6696.035384] [] ? pneigh_queue_purge+0x25/0x2f > [ 6696.035386] [] ? neigh_ifdown+0xba/0xc9 > [ 6696.035389] [] ? notifier_call_chain+0x29/0x4c > [ 6696.035392] [] ? rollback_registered_many+0xed/0x19= c > [ 6696.035394] [] ? unregister_netdevice_many+0xe/0x57 > [ 6696.035397] [] ? default_device_exit_batch+0x92/0xa= 3 > [ 6696.035399] [] ? cleanup_net+0xfd/0x1af > [ 6696.035402] [] ? worker_thread+0x188/0x21d > [ 6696.035404] [] ? cleanup_net+0x0/0x1af > [ 6696.035406] [] ? autoremove_wake_function+0x0/0x2e > [ 6696.035409] [] ? worker_thread+0x0/0x21d > [ 6696.035411] [] ? kthread+0x79/0x81 > [ 6696.035414] [] ? kernel_thread_helper+0x4/0x10 > [ 6696.035416] [] ? kthread+0x0/0x81 > [ 6696.035418] [] ? kernel_thread_helper+0x0/0x10 > [ 6696.035419] ---[ end trace ef7b93cb006e989e ]--- [...] --=20 Ben Hutchings Once a job is fouled up, anything done to improve it makes it worse. --=-rWvstrAH0LFbnoRb/H2e Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQIVAwUAS8tCYOe/yOyVhhEJAQJerA/+NRfPcFSytTkMQD4shWtNqEA6u36oVDvV yY77mmLfZ1HiR3YjQ3bjffQu5gcnd7nGCtpYICKVicCzBIN39vnauLFWgNlfduLk 6oQ9NFQG41HUFqi+wV+Npa7EVbVk3HUzKMkSSrev21eS4TIFKpjBnn/QivtIl1Mp s+ujGFhnga0RAJHuHsnqxKNWHZw1JhKwBBoGzRp2x9GKoE8SHulggr6spgSRxblX 8XhIstcadYAfkVEv8tlAoCGVxRBpZdtYVNEaPpIchbwJ49OrNvTCgb1GAHHepLbj Ls6ekeh440T9QWxBt037a+h4f/DsRSJ43pnDmTTxRD9k+8aROrh826M1PnVSlD8t VrxveoGT/YWGXraA0gou23wHacJhGUsqPU6eLSkAca+IgtE+K2Meidy7enfLwiz+ cJXTm2pgtJVIdyuyK/qEdB5jKhsl9joch1lmzRX6UzWuQOl8b2DKIOJGmDuprPAk ep36Ouk8gAw2wX0lS2tZi7KRQy/uA63ncH7eV6oQvk72M8kHkjDHNTyGA6qpZbPB 3Zn2UKOPDn6zEU0nNSxzF/xV0ObdOZyeAIpMWuLK96z+kiokhE/lkoXhEFtSdDqz EEuxN8sKeTR/IfgunCV+a4O8dTnRazwIkcGpeGwcrMpxTP7f6RwKYL3/nEPxjdIz 6k8Qxq0j3Ag= =N7NR -----END PGP SIGNATURE----- --=-rWvstrAH0LFbnoRb/H2e--