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Description of problem: I received two identical warnings during boot (the second one caused abrt to think that the kernel is tainted, so I removed the corresponding files from /var/spool/abrt). Here is the stack trace from the first warning, since abrt only seems to include the second one: [ 53.372366] ------------[ cut here ]------------ [ 53.372387] WARNING: CPU: 0 PID: 95 at net/netfilter/core.c:143 nf_unregister_net_hook+0xe6/0x140 [ 53.372389] nf_unregister_net_hook: hook not found! [ 53.372392] Modules linked in: nf_defrag_ipv4 nf_nat_ipv4(+) nf_nat nf_conntrack iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables arc4 ath9k iTCO_wdt iTCO_vendor_support ath9k_common msi_wmi gpio_ich ath9k_hw sparse_keymap coretemp mac80211 snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel joydev ath cfg80211 snd_hda_codec lpc_ich snd_hda_core snd_hwdep snd_seq rfkill snd_seq_device snd_pcm wmi snd_timer snd acpi_cpufreq tpm_tis soundcore tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc i915 i2c_algo_bit drm_kms_helper serio_raw ums_realtek uas drm usb_storage r8169 mii video fjes [ 53.372514] CPU: 0 PID: 95 Comm: kworker/u4:4 Not tainted 4.8.4-301.fc25.i686+PAE #1 [ 53.372517] Hardware name: To be filled by O.E.M. To be filled by O.E.M./To be filled by O.E.M., BIOS 4.6.3 11/19/2008 [ 53.372527] Workqueue: netns cleanup_net [ 53.372534] cd63a967 86031703 00000286 f4627e3c ccf5cb00 f4627e80 cd5da73d f4627e6c [ 53.372548] ccc6c0aa cd5dfb70 f4627ea0 0000005f cd5da73d 0000008f cd278726 0000008f [ 53.372561] f640b750 f86a9000 f640b750 f4627e8c ccc6c116 00000009 00000000 f4627e80 [ 53.372575] Call Trace: [ 53.372588] [<ccf5cb00>] dump_stack+0x58/0x78 [ 53.372596] [<ccc6c0aa>] __warn+0xea/0x110 [ 53.372605] [<cd278726>] ? nf_unregister_net_hook+0xe6/0x140 [ 53.372615] [<ccc6c116>] warn_slowpath_fmt+0x46/0x60 [ 53.372622] [<cd278726>] nf_unregister_net_hook+0xe6/0x140 [ 53.372630] [<cd278879>] netfilter_net_exit+0x29/0x50 [ 53.372638] [<cd2357b6>] ops_exit_list.isra.4+0x36/0x60 [ 53.372646] [<cd23669e>] cleanup_net+0x15e/0x230 [ 53.372654] [<ccc839ef>] process_one_work+0x13f/0x3a0 [ 53.372661] [<ccc83c89>] worker_thread+0x39/0x460 [ 53.372668] [<ccc83c50>] ? process_one_work+0x3a0/0x3a0 [ 53.372674] [<ccc88f86>] kthread+0xa6/0xc0 [ 53.372683] [<cd357022>] ret_from_kernel_thread+0xe/0x24 [ 53.372689] [<ccc88ee0>] ? kthread_worker_fn+0x140/0x140 [ 53.372694] ---[ end trace 95a742dff2ab1646 ]--- Additional info: reporter: libreport-2.8.0 WARNING: CPU: 0 PID: 95 at net/netfilter/core.c:143 nf_unregister_net_hook+0xe6/0x140 nf_unregister_net_hook: hook not found! Modules linked in: nf_defrag_ipv4 nf_nat_ipv4(+) nf_nat nf_conntrack iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables arc4 ath9k iTCO_wdt iTCO_vendor_support ath9k_common msi_wmi gpio_ich ath9k_hw sparse_keymap coretemp mac80211 snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel joydev ath cfg80211 snd_hda_codec lpc_ich snd_hda_core snd_hwdep snd_seq rfkill snd_seq_device snd_pcm wmi snd_timer snd acpi_cpufreq tpm_tis soundcore tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc i915 i2c_algo_bit drm_kms_helper serio_raw ums_realtek uas drm usb_storage r8169 mii video fjes CPU: 0 PID: 95 Comm: kworker/u4:4 Tainted: G W 4.8.4-301.fc25.i686+PAE #1 Hardware name: To be filled by O.E.M. To be filled by O.E.M./To be filled by O.E.M., BIOS 4.6.3 11/19/2008 Workqueue: netns cleanup_net cd63a967 86031703 00000286 f4627e3c ccf5cb00 f4627e80 cd5da73d f4627e6c ccc6c0aa cd5dfb70 f4627ea0 0000005f cd5da73d 0000008f cd278726 0000008f f640b768 f86a9020 f640b768 f4627e8c ccc6c116 00000009 00000000 f4627e80 Call Trace: [<ccf5cb00>] dump_stack+0x58/0x78 [<ccc6c0aa>] __warn+0xea/0x110 [<cd278726>] ? nf_unregister_net_hook+0xe6/0x140 [<ccc6c116>] warn_slowpath_fmt+0x46/0x60 [<cd278726>] nf_unregister_net_hook+0xe6/0x140 [<cd278879>] netfilter_net_exit+0x29/0x50 [<cd2357b6>] ops_exit_list.isra.4+0x36/0x60 [<cd23669e>] cleanup_net+0x15e/0x230 [<ccc839ef>] process_one_work+0x13f/0x3a0 [<ccc83c89>] worker_thread+0x39/0x460 [<ccc83c50>] ? process_one_work+0x3a0/0x3a0 [<ccc88f86>] kthread+0xa6/0xc0 [<cd357022>] ret_from_kernel_thread+0xe/0x24 [<ccc88ee0>] ? kthread_worker_fn+0x140/0x140 Potential duplicate: bug 1365975
Created attachment 1215571 [details] File: dmesg
Description of problem: After upgrade to Fedora testing with new 4.9.2 kernel there is new screen flick during early kernel loading with screen full of "ERROR: blabla" messages at top, just fraction of second, then usual load od Fedora logo (is it presto?). All other looks fine, as usual, GNOME works perfect. Version-Release number of selected component: kernel-core-4.9.2-200.fc25 Additional info: reporter: libreport-2.8.0 cmdline: BOOT_IMAGE=/vmlinuz-4.9.2-200.fc25.x86_64 root=/dev/mapper/fedora_fast22-root ro rd.lvm.lv=fedora_fast22/swap rd.lvm.lv=fedora_fast22/root rhgb quiet LANG=ru_RU.UTF-8 kernel: 4.9.2-200.fc25.x86_64 pkg_fingerprint: 4089 D8F2 FDB1 9C98 pkg_vendor: Fedora Project runlevel: N 5 type: Kerneloops Truncated backtrace: WARNING: CPU: 1 PID: 157 at net/netfilter/core.c:151 nf_unregister_net_hook+0x8f/0x170 nf_unregister_net_hook: hook not found! Modules linked in: fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge ip6table_raw ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security ebtable_filter ebtables ip6table_filter ip6_tables vfat fat snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi intel_rapl snd_hda_intel snd_hda_codec x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_core kvm_intel iTCO_wdt snd_hwdep iTCO_vendor_support snd_seq snd_seq_device kvm irqbypass snd_pcm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel intel_cstate intel_uncore intel_rapl_perf snd_timer snd ie31200_edac joydev i2c_i801 mei_me edac_core soundcore i2c_smbus mei shpchp lpc_ich tpm_infineon tpm_tis tpm_tis_core video tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc xfs libcrc32c amdkfd amd_iommu_v2 radeon i2c_algo_bit drm_kms_helper ttm 8021q crc32c_intel drm garp stp llc mrp serio_raw via_rhine atl1c mii fjes CPU: 1 PID: 157 Comm: kworker/u16:5 Not tainted 4.9.2-200.fc25.x86_64 #1 Hardware name: Gigabyte Technology Co., Ltd. To be filled by O.E.M./Z77-DS3H, BIOS F3 04/02/2012 Workqueue: netns cleanup_net ffffc3420224fc80 ffffffff933f3e5d ffffc3420224fcd0 0000000000000000 ffffc3420224fcc0 ffffffff930a202b 000000970224fc88 0000000000000000 ffffffffc0a66000 ffff9f95348ecb68 ffff9f95348ec140 ffffffff93efcb80 Call Trace: [<ffffffff933f3e5d>] dump_stack+0x63/0x86 [<ffffffff930a202b>] __warn+0xcb/0xf0 [<ffffffff930a20af>] warn_slowpath_fmt+0x5f/0x80 [<ffffffff9322fea3>] ? kfree+0x153/0x170 [<ffffffff9372e41f>] nf_unregister_net_hook+0x8f/0x170 [<ffffffff9372e61f>] netfilter_net_exit+0x2f/0x60 [<ffffffff936e5858>] ops_exit_list.isra.4+0x38/0x60 [<ffffffff936e6826>] cleanup_net+0x1a6/0x290 [<ffffffff930bc4e4>] process_one_work+0x184/0x430 [<ffffffff930bc7de>] worker_thread+0x4e/0x490 [<ffffffff930bc790>] ? process_one_work+0x430/0x430 [<ffffffff930c2569>] kthread+0xd9/0xf0 [<ffffffff930c2490>] ? kthread_park+0x60/0x60 [<ffffffff9381be55>] ret_from_fork+0x25/0x30
Description of problem: Uncertain, but the problem seemed to happen at system shutdown. Version-Release number of selected component: kernel-core-4.9.6-200.fc25 Additional info: reporter: libreport-2.8.0 cmdline: BOOT_IMAGE=/vmlinuz-4.9.6-200.fc25.x86_64 root=/dev/mapper/fedora_amaterasu-root ro rd.lvm.lv=fedora_amaterasu/root rd.lvm.lv=fedora_amaterasu/swap rhgb quiet LANG=en_US.UTF-8 kernel: 4.9.6-200.fc25.x86_64 pkg_fingerprint: 4089 D8F2 FDB1 9C98 pkg_vendor: Fedora Project runlevel: N 5 type: Kerneloops Truncated backtrace: WARNING: CPU: 1 PID: 161 at net/netfilter/core.c:151 nf_unregister_net_hook+0x8f/0x170 nf_unregister_net_hook: hook not found! Modules linked in: ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_raw ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security ebtable_filter ebtables ip6table_filter ip6_tables intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp rtl8xxxu kvm_intel arc4 kvm irqbypass b43 crct10dif_pclmul pn544_mei mei_phy crc32_pclmul pn544 hci nfc ssb ghash_clmulni_intel intel_cstate mei_wdt iTCO_wdt ppdev iTCO_vendor_support snd_hda_codec_realtek rtl8192cu dell_wmi sparse_keymap snd_soc_rt5640 snd_hda_codec_generic snd_hda_codec_hdmi rtl_usb intel_uncore snd_soc_rl6231 dell_laptop snd_soc_core snd_hda_intel dell_smbios rtl8192c_common dcdbas dell_smm_hwmon intel_rapl_perf snd_hda_codec rtlwifi uvcvideo snd_compress i2c_i801 mac80211 joydev i2c_smbus snd_hda_core videobuf2_vmalloc snd_pcm_dmaengine snd_hwdep ac97_bus snd_seq videobuf2_memops videobuf2_v4l2 snd_seq_device videobuf2_core cfg80211 snd_pcm videodev bcma mei_me media lpc_ich parport_pc ie31200_edac mei edac_core shpchp wmi snd_timer parport snd elan_i2c dell_smo8800 dw_dmac video soundcore snd_soc_sst_acpi snd_soc_sst_match tpm_tis dell_rbtn tpm_tis_core i2c_designware_platform spi_pxa2xx_platform tpm rfkill i2c_designware_core nfsd auth_rpcgss nfs_acl lockd grace sunrpc amdkfd amd_iommu_v2 radeon i2c_algo_bit drm_kms_helper ttm e1000e drm crc32c_intel serio_raw sdhci_pci ptp sdhci_acpi pps_core sdhci mmc_core i2c_hid fjes CPU: 1 PID: 161 Comm: kworker/u16:6 Not tainted 4.9.6-200.fc25.x86_64 #1 Hardware name: Dell Inc. Precision M6800/0XWC1M, BIOS A08 05/02/2014 Workqueue: netns cleanup_net ffff9ec9c208bc80 ffffffff8f3f414d ffff9ec9c208bcd0 0000000000000000 ffff9ec9c208bcc0 ffffffff8f0a202b 00000097c208bc88 0000000000000000 ffffffffc08af000 ffff92408be89fe8 ffff92408be895c0 ffffffff8fefcec0 Call Trace: [<ffffffff8f3f414d>] dump_stack+0x63/0x86 [<ffffffff8f0a202b>] __warn+0xcb/0xf0 [<ffffffff8f0a20af>] warn_slowpath_fmt+0x5f/0x80 [<ffffffff8f230103>] ? kfree+0x153/0x170 [<ffffffff8f72f42f>] nf_unregister_net_hook+0x8f/0x170 [<ffffffff8f72f62f>] netfilter_net_exit+0x2f/0x60 [<ffffffff8f6e6858>] ops_exit_list.isra.4+0x38/0x60 [<ffffffff8f6e7826>] cleanup_net+0x1a6/0x290 [<ffffffff8f0bc4e4>] process_one_work+0x184/0x430 [<ffffffff8f0bc7de>] worker_thread+0x4e/0x490 [<ffffffff8f0bc790>] ? process_one_work+0x430/0x430 [<ffffffff8f0c2569>] kthread+0xd9/0xf0 [<ffffffff8f0c2490>] ? kthread_park+0x60/0x60 [<ffffffff8f81ced5>] ret_from_fork+0x25/0x30
*********** MASS BUG UPDATE ************** We apologize for the inconvenience. There is a large number of bugs to go through and several of them have gone stale. Due to this, we are doing a mass bug update across all of the Fedora 25 kernel bugs. Fedora 25 has now been rebased to 4.10.9-200.fc25. Please test this kernel update (or newer) and let us know if you issue has been resolved or if it is still present with the newer kernel. If you have moved on to Fedora 26, and are still experiencing this issue, please change the version to Fedora 26. If you experience different issues, please open a new bug report for those.
*********** MASS BUG UPDATE ************** This bug is being closed with INSUFFICIENT_DATA as there has not been a response in 2 weeks. If you are still experiencing this issue, please reopen and attach the relevant data from the latest kernel you are running and any data that might have been requested previously.