From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Layton Subject: [ 2375.793397] WARNING: CPU: 0 PID: 1149 at net/netlink/genetlink.c:1037 genl_unbind+0xc0/0xd0() Date: Wed, 14 Jan 2015 16:13:34 -0500 Message-ID: <20150114161334.28acf5fc@tlielax.poochiereds.net> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Johannes Berg To: netdev@vger.kernel.org Return-path: Received: from mail-qg0-f45.google.com ([209.85.192.45]:45953 "EHLO mail-qg0-f45.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754051AbbANVNp (ORCPT ); Wed, 14 Jan 2015 16:13:45 -0500 Received: by mail-qg0-f45.google.com with SMTP id z107so8979277qgd.4 for ; Wed, 14 Jan 2015 13:13:44 -0800 (PST) Sender: netdev-owner@vger.kernel.org List-ID: While running the trinity fuzzer in a KVM guest, I ^C'ed it at an (apparent) inopportune moment, and saw a bunch of these WARN_ONs pop: [ 2375.793396] ------------[ cut here ]------------ [ 2375.793397] WARNING: CPU: 0 PID: 1149 at net/netlink/genetlink.c:1037 genl_unbind+0xc0/0xd0() [ 2375.793417] Modules linked in: af_key crypto_user nfnetlink vmw_vsock_vmci_transport vmw_vmci vsock nfc af_802154 ieee802154 bluetooth rfkill pppoe pppox ppp_generic slhc irda crc_ccitt rds rose atm netrom appletalk ipx p8023 p8022 psnap ax25 ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw snd_hda_codec_generic snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep snd_pcm iosf_mbi crct10dif_pclmul snd_timer crc32_pclmul ppdev crc32c_intel snd ghash_clmulni_intel pa rport_pc joydev parport serio_raw pcspkr virtio_balloon soundcore virtio_console pvpanic i2c_piix4 virtio_blk virtio_net qxl drm_kms_helper ttm virtio_pci ata_generic virtio_ring drm pata_acpi virtio floppy [ 2375.793424] CPU: 0 PID: 1149 Comm: trinity-main Tainted: G W 3.19.0-rc4+ #26 [ 2375.793424] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.7.5-20140709_153950- 04/01/2014 [ 2375.793426] 0000000000000000 000000002a81588d ffff8800b932bd18 ffffffff8186adb8 [ 2375.793427] 0000000000000000 0000000000000000 ffff8800b932bd58 ffffffff810ac9da [ 2375.793428] ffffffff81f8c940 0000000000000000 ffffffff81f8c940 000000000000000f [ 2375.793429] Call Trace: [ 2375.793431] [] dump_stack+0x4c/0x65 [ 2375.793432] [] warn_slowpath_common+0x8a/0xc0 [ 2375.793433] [] warn_slowpath_null+0x1a/0x20 [ 2375.793435] [] genl_unbind+0xc0/0xd0 [ 2375.793436] [] netlink_release+0x19d/0x3f0 [ 2375.793437] [] sock_release+0x1f/0x90 [ 2375.793439] [] sock_close+0x12/0x20 [ 2375.793440] [] __fput+0xf8/0x220 [ 2375.793441] [] ____fput+0xe/0x10 [ 2375.793443] [] task_work_run+0xb4/0xe0 [ 2375.793444] [] do_exit+0x37d/0xcf0 [ 2375.793445] [] do_group_exit+0x54/0xe0 [ 2375.793447] [] SyS_exit_group+0x14/0x20 [ 2375.793448] [] tracesys_phase2+0xd4/0xd9 [ 2375.793449] ---[ end trace be07601dc6d6ab5c ]--- trinity was run with no arguments. I had it happen a couple of times while running it, but it doesn't happen every time. It seems to be somewhat contingent on signaling it at the right time. -- Jeff Layton