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Message-ID: <52794c2a10ac78199c3912ccf1f97990@eikelenboom.it> Date: Wed, 30 Dec 2015 19:15:09 +0100 From: Sander Eikelenboom <linux@...elenboom.it> To: ebiederm@...ssion.com Cc: Pablo Neira Ayuso <pablo@...filter.org>, netdev@...r.kernel.org, netfilter@...r.kernel.org, linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org Subject: Re: nf_unregister_net_hook: hook not found! On 2015-12-30 03:39, ebiederm@...ssion.com wrote: > Pablo Neira Ayuso <pablo@...filter.org> writes: > >> On Mon, Dec 28, 2015 at 09:05:03PM +0100, Sander Eikelenboom wrote: >>> Hi, >>> >>> Running a 4.4.0-rc6 kernel i encountered the warning below. >> >> Cc'ing Eric Biederman. >> >> @Sander, could you provide a way to reproduce this? > > I am on vacation until the new year, but if this is reproducible we > should be able to print out reg, reg->pf, reg->hooknum, reg->hook > to figure out which hook is having something very weird happen to it. > > This is happening in some network namespace exit. > > Eric > Unfortunately i have found no way to reproduce, 13 seconds implies it was at boot, but i only have seen this once. -- Sander >> Thanks. >> >>> [ 13.740472] ip_tables: (C) 2000-2006 Netfilter Core Team >>> [ 13.936237] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled >>> [ 13.945391] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled >>> [ 13.947434] iwlwifi 0000:03:00.0: Radio type=0x2-0x1-0x0 >>> [ 14.223990] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled >>> [ 14.232065] iwlwifi 0000:03:00.0: L1 Enabled - LTR Disabled >>> [ 14.233570] iwlwifi 0000:03:00.0: Radio type=0x2-0x1-0x0 >>> [ 14.328141] systemd-logind[2485]: Failed to start user service: >>> Unknown >>> unit: user@....service >>> [ 14.356634] systemd-logind[2485]: New session c1 of user lightdm. >>> [ 14.357320] ------------[ cut here ]------------ >>> [ 14.357327] WARNING: CPU: 2 PID: 102 at net/netfilter/core.c:143 >>> netfilter_net_exit+0x25/0x50() >>> [ 14.357328] nf_unregister_net_hook: hook not found! >>> [ 14.357371] Modules linked in: iptable_security(+) iptable_raw >>> iptable_filter ip_tables x_tables input_polldev bnep binfmt_misc nfsd >>> auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc >>> uvcvideo >>> videobuf2_vmalloc iTCO_wdt arc4 videobuf2_memops iTCO_vendor_support >>> intel_rapl iosf_mbi videobuf2_v4l2 x86_pkg_temp_thermal >>> intel_powerclamp >>> btusb coretemp snd_hda_codec_hdmi iwldvm videobuf2_core btrtl >>> kvm_intel >>> v4l2_common mac80211 videodev btbcm snd_hda_codec_conexant btintel >>> media kvm >>> snd_hda_codec_generic bluetooth psmouse thinkpad_acpi iwlwifi >>> snd_hda_intel >>> pcspkr serio_raw snd_hda_codec nvram cfg80211 snd_hwdep snd_hda_core >>> rfkill >>> i2c_i801 lpc_ich snd_pcm mfd_core snd_timer evdev snd soundcore >>> shpchp >>> tpm_tis tpm algif_skcipher af_alg crct10dif_pclmul crc32_pclmul >>> crc32c_intel >>> aesni_intel >>> [ 14.357380] ehci_pci sdhci_pci aes_x86_64 glue_helper ehci_hcd >>> e1000e >>> lrw ablk_helper sg sdhci cryptd sd_mod ptp mmc_core usbcore >>> usb_common >>> pps_core >>> [ 14.357383] CPU: 2 PID: 102 Comm: kworker/u16:3 Tainted: G U >>> 4.4.0-rc6-x220-20151224+ #1 >>> [ 14.357384] Hardware name: LENOVO 42912ZU/42912ZU, BIOS 8DET69WW >>> (1.39 ) >>> 07/18/2013 >>> [ 14.357390] Workqueue: netns cleanup_net >>> [ 14.357393] ffffffff81a27dfd ffffffff81359c69 ffff88030e7cbd40 >>> ffffffff81060297 >>> [ 14.357395] ffff88030e820d80 ffff88030e7cbd90 ffffffff81c962d8 >>> ffffffff81c962e0 >>> [ 14.357397] ffff88030e7cbdf8 ffffffff81060317 ffffffff81a2c010 >>> ffff880300000018 >>> [ 14.357398] Call Trace: >>> [ 14.357405] [<ffffffff81359c69>] ? dump_stack+0x40/0x57 >>> [ 14.357408] [<ffffffff81060297>] ? warn_slowpath_common+0x77/0xb0 >>> [ 14.357410] [<ffffffff81060317>] ? warn_slowpath_fmt+0x47/0x50 >>> [ 14.357416] [<ffffffff816f9549>] ? mutex_lock+0x9/0x30 >>> [ 14.357418] [<ffffffff81641b35>] ? netfilter_net_exit+0x25/0x50 >>> [ 14.357421] [<ffffffff8160b78e>] ? ops_exit_list.isra.6+0x2e/0x60 >>> [ 14.357424] [<ffffffff8160c3eb>] ? cleanup_net+0x1ab/0x280 >>> [ 14.357427] [<ffffffff81074b33>] ? process_one_work+0x133/0x330 >>> [ 14.357429] [<ffffffff81074d90>] ? worker_thread+0x60/0x470 >>> [ 14.357430] [<ffffffff81074d30>] ? process_one_work+0x330/0x330 >>> [ 14.357434] [<ffffffff81079c0a>] ? kthread+0xca/0xe0 >>> [ 14.357436] [<ffffffff81079b40>] ? >>> kthread_create_on_node+0x170/0x170 >>> [ 14.357439] [<ffffffff816fb5cf>] ? ret_from_fork+0x3f/0x70 >>> [ 14.357441] [<ffffffff81079b40>] ? >>> kthread_create_on_node+0x170/0x170 >>> [ 14.357443] ---[ end trace 9984cc4b0e89f818 ]--- >>> [ 14.357443] ------------[ cut here ]------------ >>> [ 14.357446] WARNING: CPU: 2 PID: 102 at net/netfilter/core.c:143 >>> netfilter_net_exit+0x25/0x50() >>> [ 14.357446] nf_unregister_net_hook: hook not found! >>> [ 14.357472] Modules linked in: iptable_security(+) iptable_raw >>> iptable_filter ip_tables x_tables input_polldev bnep binfmt_misc nfsd >>> auth_rpcgss oid_registry nfs_acl nfs lockd grace fscache sunrpc >>> uvcvideo >>> videobuf2_vmalloc iTCO_wdt arc4 videobuf2_memops iTCO_vendor_support >>> intel_rapl iosf_mbi videobuf2_v4l2 x86_pkg_temp_thermal >>> intel_powerclamp >>> btusb coretemp snd_hda_codec_hdmi iwldvm videobuf2_core btrtl >>> kvm_intel >>> v4l2_common mac80211 videodev btbcm snd_hda_codec_conexant btintel >>> media kvm >>> snd_hda_codec_generic bluetooth psmouse thinkpad_acpi iwlwifi >>> snd_hda_intel >>> pcspkr serio_raw snd_hda_codec nvram cfg80211 snd_hwdep snd_hda_core >>> rfkill >>> i2c_i801 lpc_ich snd_pcm mfd_core snd_timer evdev snd soundcore >>> shpchp >>> tpm_tis tpm algif_skcipher af_alg crct10dif_pclmul crc32_pclmul >>> crc32c_intel >>> aesni_intel >>> [ 14.357478] ehci_pci sdhci_pci aes_x86_64 glue_helper ehci_hcd >>> e1000e >>> lrw ablk_helper sg sdhci cryptd sd_mod ptp mmc_core usbcore >>> usb_common >>> pps_core >>> [ 14.357480] CPU: 2 PID: 102 Comm: kworker/u16:3 Tainted: G U >>> W >>> 4.4.0-rc6-x220-20151224+ #1 >>> [ 14.357481] Hardware name: LENOVO 42912ZU/42912ZU, BIOS 8DET69WW >>> (1.39 ) >>> 07/18/2013 >>> [ 14.357484] Workqueue: netns cleanup_net >>> [ 14.357486] ffffffff81a27dfd ffffffff81359c69 ffff88030e7cbd40 >>> ffffffff81060297 >>> [ 14.357488] ffff88030e820db8 ffff88030e7cbd90 ffffffff81c962d8 >>> ffffffff81c962e0 >>> [ 14.357489] ffff88030e7cbdf8 ffffffff81060317 ffffffff81a2c010 >>> ffff880300000018 >>> [ 14.357490] Call Trace: >>> [ 14.357493] [<ffffffff81359c69>] ? dump_stack+0x40/0x57 >>> [ 14.357495] [<ffffffff81060297>] ? warn_slowpath_common+0x77/0xb0 >>> [ 14.357497] [<ffffffff81060317>] ? warn_slowpath_fmt+0x47/0x50 >>> [ 14.357499] [<ffffffff816f9549>] ? mutex_lock+0x9/0x30 >>> [ 14.357501] [<ffffffff81641b35>] ? netfilter_net_exit+0x25/0x50 >>> [ 14.357504] [<ffffffff8160b78e>] ? ops_exit_list.isra.6+0x2e/0x60 >>> [ 14.357507] [<ffffffff8160c3eb>] ? cleanup_net+0x1ab/0x280 >>> [ 14.357509] [<ffffffff81074b33>] ? process_one_work+0x133/0x330 >>> [ 14.357511] [<ffffffff81074d90>] ? worker_thread+0x60/0x470 >>> [ 14.357512] [<ffffffff81074d30>] ? process_one_work+0x330/0x330 >>> [ 14.357514] [<ffffffff81079c0a>] ? kthread+0xca/0xe0 >>> [ 14.357517] [<ffffffff81079b40>] ? >>> kthread_create_on_node+0x170/0x170 >>> [ 14.357519] [<ffffffff816fb5cf>] ? ret_from_fork+0x3f/0x70 >>> [ 14.357521] [<ffffffff81079b40>] ? >>> kthread_create_on_node+0x170/0x170 >>> [ 14.357522] ---[ end trace 9984cc4b0e89f819 ]--- >>> [ 14.357523] ------------[ cut here ]------------ >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe netdev" in >>> the body of a message to majordomo@...r.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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