I started seeing this too after upgrading to this kernel (from https://ubuntu.com/security/notices/USN-6081-1):
ii linux-image-generic 4.15.0.211.194 ii linux-image-4.15.0-211-generic 4.15.0-211.222 $ cat /proc/version_signature Ubuntu 4.15.0-211.222-generic 4.15.18 >From /var/log/syslog: May 27 15:18:43 <hostname> kernel: [22004.663374] ------------[ cut here ]------------ May 27 15:18:43 <hostname> kernel: [22004.663397] WARNING: CPU: 6 PID: 0 at /build/linux-RlFMDZ/linux-4.15.0/net/core/stream.c:212 sk_stream_kill_queues+0xed/0x110 May 27 15:18:43 <hostname> kernel: [22004.663398] Modules linked in: dm_crypt algif_skcipher af_alg nls_iso8859_1 ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt nf_conntrack_ipv6 nf_defrag_ipv6 xt_comment ipt_REJECT nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_recent ipt_MASQUERADE nf_nat_masquerade_ipv4 xt_nat intel_rapl ipmi_ssif x86_pkg_temp_thermal intel_powerclamp binfmt_misc kvm_intel kvm irqbypass dcdbas mgag200 iptable_nat ttm nf_nat_ipv4 crct10dif_pclmul xt_limit crc32_pclmul drm_kms_helper xt_tcpudp ghash_clmulni_intel pcbc drm xt_addrtype i2c_algo_bit aesni_intel aes_x86_64 crypto_simd glue_helper cryptd fb_sys_fops syscopyarea intel_cstate sysfillrect intel_rapl_perf sysimgblt lpc_ich shpchp ie31200_edac ipmi_si ipmi_devintf wmi ipmi_msghandler mac_hid nf_conntrack_ipv4 nf_defrag_ipv4 sch_fq_codel xt_conntrack May 27 15:18:43 <hostname> kernel: [22004.663428] ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp nf_conntrack iptable_filter coretemp lp parport ip_tables x_tables autofs4 raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid0 multipath linear raid1 tg3 ahci ptp libahci pps_core May 27 15:18:43 <hostname> kernel: [22004.663444] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G W 4.15.0-211-generic #222-Ubuntu May 27 15:18:43 <hostname> kernel: [22004.663446] Hardware name: Dell Inc. PowerEdge T110 II/0PM2CW, BIOS 2.8.0 06/24/2014 May 27 15:18:43 <hostname> kernel: [22004.663449] RIP: 0010:sk_stream_kill_queues+0xed/0x110 May 27 15:18:43 <hostname> kernel: [22004.663450] RSP: 0018:ffff99813fd83920 EFLAGS: 00010282 May 27 15:18:43 <hostname> kernel: [22004.663452] RAX: 0000000000000024 RBX: ffff997fb1479980 RCX: 0000000000000006 May 27 15:18:43 <hostname> kernel: [22004.663453] RDX: 0000000000000000 RSI: ffff99813fd9b4d8 RDI: ffff99813fd9b4d0 May 27 15:18:43 <hostname> kernel: [22004.663454] RBP: ffff99813fd83930 R08: 0000000000007b7b R09: 0000000000000004 May 27 15:18:43 <hostname> kernel: [22004.663456] R10: ffff99813fd83958 R11: 0000000000000001 R12: ffff997fb1479a48 May 27 15:18:43 <hostname> kernel: [22004.663457] R13: 0000000000000006 R14: 000000000000003c R15: 0000000000000000 May 27 15:18:43 <hostname> kernel: [22004.663459] FS: 0000000000000000(0000) GS:ffff99813fd80000(0000) knlGS:0000000000000000 May 27 15:18:43 <hostname> kernel: [22004.663460] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 May 27 15:18:43 <hostname> kernel: [22004.663461] CR2: 0000563185766000 CR3: 000000027d40a001 CR4: 00000000001606e0 May 27 15:18:43 <hostname> kernel: [22004.663462] Call Trace: May 27 15:18:43 <hostname> kernel: [22004.663465] <IRQ> May 27 15:18:43 <hostname> kernel: [22004.663472] inet_csk_destroy_sock+0x59/0x150 May 27 15:18:43 <hostname> kernel: [22004.663474] tcp_done+0x96/0xa0 May 27 15:18:43 <hostname> kernel: [22004.663476] tcp_time_wait+0x1be/0x280 May 27 15:18:43 <hostname> kernel: [22004.663479] tcp_fin+0x16b/0x180 May 27 15:18:43 <hostname> kernel: [22004.663481] tcp_data_queue+0x594/0xc20 May 27 15:18:43 <hostname> kernel: [22004.663484] tcp_rcv_state_process+0x5dd/0xe70 May 27 15:18:43 <hostname> kernel: [22004.663486] ? skb_clone+0x56/0xc0 May 27 15:18:43 <hostname> kernel: [22004.663490] tcp_v6_do_rcv+0x1ca/0x440 May 27 15:18:43 <hostname> kernel: [22004.663492] ? tcp_v6_do_rcv+0x1ca/0x440 May 27 15:18:43 <hostname> kernel: [22004.663494] tcp_v6_rcv+0x9b6/0xa60 May 27 15:18:43 <hostname> kernel: [22004.663503] ? nf_ct_get_tuple+0x82/0xa0 [nf_conntrack] May 27 15:18:43 <hostname> kernel: [22004.663507] ip6_input_finish+0xcc/0x470 May 27 15:18:43 <hostname> kernel: [22004.663509] ip6_input+0x3f/0xb0 May 27 15:18:43 <hostname> kernel: [22004.663511] ? ipv6_is_mld+0xa0/0xa0 May 27 15:18:43 <hostname> kernel: [22004.663513] ip6_rcv_finish+0xd8/0x120 May 27 15:18:43 <hostname> kernel: [22004.663514] ipv6_rcv+0x347/0x510 May 27 15:18:43 <hostname> kernel: [22004.663516] ? ip6_make_skb+0x200/0x200 May 27 15:18:43 <hostname> kernel: [22004.663520] __netif_receive_skb_core+0x432/0xb80 May 27 15:18:43 <hostname> kernel: [22004.663524] ? tcp6_gro_receive+0x137/0x1a0 May 27 15:18:43 <hostname> kernel: [22004.663527] ? ipv6_gro_receive+0x1a6/0x350 May 27 15:18:43 <hostname> kernel: [22004.663529] __netif_receive_skb+0x18/0x60 May 27 15:18:43 <hostname> kernel: [22004.663531] ? __netif_receive_skb+0x18/0x60 May 27 15:18:43 <hostname> kernel: [22004.663534] netif_receive_skb_internal+0x45/0xe0 May 27 15:18:43 <hostname> kernel: [22004.663537] napi_gro_receive+0xc5/0xf0 May 27 15:18:43 <hostname> kernel: [22004.663542] tg3_poll_work+0x3b2/0xf10 [tg3] May 27 15:18:43 <hostname> kernel: [22004.663548] tg3_poll+0x6b/0x3a0 [tg3] May 27 15:18:43 <hostname> kernel: [22004.663550] net_rx_action+0x140/0x3d0 May 27 15:18:43 <hostname> kernel: [22004.663556] __do_softirq+0xe4/0x2d4 May 27 15:18:43 <hostname> kernel: [22004.663559] irq_exit+0xc5/0xd0 May 27 15:18:43 <hostname> kernel: [22004.663562] do_IRQ+0x86/0xe0 May 27 15:18:43 <hostname> kernel: [22004.663564] common_interrupt+0x90/0x90 May 27 15:18:43 <hostname> kernel: [22004.663565] </IRQ> May 27 15:18:43 <hostname> kernel: [22004.663568] RIP: 0010:cpuidle_enter_state+0xa7/0x2f0 May 27 15:18:43 <hostname> kernel: [22004.663569] RSP: 0018:ffffa697c1947e68 EFLAGS: 00000246 ORIG_RAX: ffffffffffffffdc May 27 15:18:43 <hostname> kernel: [22004.663571] RAX: ffff99813fda69c0 RBX: 000014035c241b5c RCX: 000000000000001f May 27 15:18:43 <hostname> kernel: [22004.663572] RDX: 000014035c241b5c RSI: ffffffef2d8e461a RDI: 0000000000000000 May 27 15:18:43 <hostname> kernel: [22004.663574] RBP: ffffa697c1947ea8 R08: 0000000000000004 R09: 0000000000026200 May 27 15:18:43 <hostname> kernel: [22004.663575] R10: ffffa697c1947e38 R11: 0000421c1d2b47a9 R12: ffff99813fdb0900 May 27 15:18:43 <hostname> kernel: [22004.663576] R13: 0000000000000004 R14: ffffffffbf7735d8 R15: 0000000000000000 May 27 15:18:43 <hostname> kernel: [22004.663579] ? cpuidle_enter_state+0x97/0x2f0 May 27 15:18:43 <hostname> kernel: [22004.663581] cpuidle_enter+0x17/0x20 May 27 15:18:43 <hostname> kernel: [22004.663584] call_cpuidle+0x23/0x40 May 27 15:18:43 <hostname> kernel: [22004.663587] do_idle+0x18c/0x1f0 May 27 15:18:43 <hostname> kernel: [22004.663590] cpu_startup_entry+0x73/0x80 May 27 15:18:43 <hostname> kernel: [22004.663594] start_secondary+0x1ab/0x200 May 27 15:18:43 <hostname> kernel: [22004.663597] secondary_startup_64+0xa5/0xb0 May 27 15:18:43 <hostname> kernel: [22004.663599] Code: 01 00 00 85 d2 74 df 48 c7 c7 f8 62 2b bf e8 50 49 15 00 0f 0b 8b 83 f8 00 00 00 85 c0 74 d1 48 c7 c7 f8 62 2b bf e8 38 49 15 00 <0f> 0b 5b 41 5c 5d c3 48 c7 c7 f8 62 2b bf e8 25 49 15 00 0f 0b May 27 15:18:43 <hostname> kernel: [22004.663623] ---[ end trace 9048473a62d7540d ]--- -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2020279 Title: Kernel warning after upgrade to 4.15.0.211.194 Status in linux package in Ubuntu: Confirmed Bug description: After rebooting into 4.15.0.211.194 on Ubuntu 18.04.6 the kernel started to produce the below warning. It did not seem to cause any major issue. Revering to 4.15.0.210 stopped the warning. The server is a Droplet at DigitalOcean with their monitoring/management agent installed. May 21 19:09:59 esolr kernel: [ 18.787737] ------------[ cut here ]------------ May 21 19:09:59 esolr kernel: [ 18.787803] WARNING: CPU: 0 PID: 1027 at /build/linux-RlFMDZ/linux-4.15.0/net/core/stream.c:212 sk_stream_kill_queues+0xed/0x110 May 21 19:09:59 esolr kernel: [ 18.787804] Modules linked in: isofs xt_set nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter xt_conntrack nf_conntrack ip_set_hash_net ip_set nfnetlink nls_iso8859_1 kvm_intel kvm binfmt_misc irqbypass input_leds joydev serio_raw sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi ip_tables x_tables autofs4 btrfs zstd_compress raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel aes_x86_64 crypto_simd glue_helper cryptd psmouse virtio_blk virtio_scsi virtio_net May 21 19:09:59 esolr kernel: [ 18.787835] CPU: 0 PID: 1027 Comm: unattended-upgr Not tainted 4.15.0-211-generic #222-Ubuntu May 21 19:09:59 esolr kernel: [ 18.787836] Hardware name: DigitalOcean Droplet/Droplet, BIOS 20171212 12/12/2017 May 21 19:09:59 esolr kernel: [ 18.787839] RIP: 0010:sk_stream_kill_queues+0xed/0x110 May 21 19:09:59 esolr kernel: [ 18.787840] RSP: 0000:ffff94bf7fc038c0 EFLAGS: 00010282 May 21 19:09:59 esolr kernel: [ 18.787841] RAX: 0000000000000024 RBX: ffff94bf79565500 RCX: 0000000000000006 May 21 19:09:59 esolr kernel: [ 18.787842] RDX: 0000000000000000 RSI: ffff94bf7fc1b4d8 RDI: ffff94bf7fc1b4d0 May 21 19:09:59 esolr kernel: [ 18.787842] RBP: ffff94bf7fc038d0 R08: 0000000000000222 R09: 0000000000000004 May 21 19:09:59 esolr kernel: [ 18.787843] R10: ffff94bf7fc03860 R11: 0000000000000001 R12: ffff94bf795655c8 May 21 19:09:59 esolr kernel: [ 18.787844] R13: 0000000000000006 R14: 000000000000003b R15: 0000000000000000 May 21 19:09:59 esolr kernel: [ 18.787845] FS: 00007f04071d4740(0000) GS:ffff94bf7fc00000(0000) knlGS:0000000000000000 May 21 19:09:59 esolr kernel: [ 18.787846] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 May 21 19:09:59 esolr kernel: [ 18.787846] CR2: 00007f0401995e60 CR3: 0000000067586002 CR4: 00000000001606f0 May 21 19:09:59 esolr kernel: [ 18.787850] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 May 21 19:09:59 esolr kernel: [ 18.787851] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 May 21 19:09:59 esolr kernel: [ 18.787851] Call Trace: May 21 19:09:59 esolr kernel: [ 18.787853] <IRQ> May 21 19:09:59 esolr kernel: [ 18.787866] inet_csk_destroy_sock+0x59/0x150 May 21 19:09:59 esolr kernel: [ 18.787868] tcp_done+0x96/0xa0 May 21 19:09:59 esolr kernel: [ 18.787872] tcp_time_wait+0x1be/0x280 May 21 19:09:59 esolr kernel: [ 18.787874] tcp_fin+0x16b/0x180 May 21 19:09:59 esolr kernel: [ 18.787876] tcp_data_queue+0x594/0xc20 May 21 19:09:59 esolr kernel: [ 18.787881] tcp_rcv_state_process+0x5dd/0xe70 May 21 19:09:59 esolr kernel: [ 18.787887] ? __slab_alloc+0x20/0x40 May 21 19:09:59 esolr kernel: [ 18.787889] ? kmem_cache_alloc+0x161/0x1c0 May 21 19:09:59 esolr kernel: [ 18.787891] ? skb_clone+0x56/0xc0 May 21 19:09:59 esolr kernel: [ 18.787897] tcp_v6_do_rcv+0x1ca/0x440 May 21 19:09:59 esolr kernel: [ 18.787898] ? tcp_v6_do_rcv+0x1ca/0x440 May 21 19:09:59 esolr kernel: [ 18.787899] tcp_v6_rcv+0x9b6/0xa60 May 21 19:09:59 esolr kernel: [ 18.787907] ? update_load_avg+0x5f9/0x780 May 21 19:09:59 esolr kernel: [ 18.787909] ip6_input_finish+0xcc/0x470 May 21 19:09:59 esolr kernel: [ 18.787911] ip6_input+0x3f/0xb0 May 21 19:09:59 esolr kernel: [ 18.787914] ? ip6_dst_check+0xb1/0xf0 May 21 19:09:59 esolr kernel: [ 18.787915] ip6_rcv_finish+0xd8/0x120 May 21 19:09:59 esolr kernel: [ 18.787916] ipv6_rcv+0x347/0x510 May 21 19:09:59 esolr kernel: [ 18.787917] ? __pskb_pull_tail+0x7f/0x4b0 May 21 19:09:59 esolr kernel: [ 18.787918] ? skb_copy_bits+0x141/0x280 May 21 19:09:59 esolr kernel: [ 18.787920] ? __kmalloc_node_track_caller+0x216/0x2b0 May 21 19:09:59 esolr kernel: [ 18.787923] __netif_receive_skb_core+0x432/0xb80 May 21 19:09:59 esolr kernel: [ 18.787929] ? tcp6_gro_receive+0x137/0x1a0 May 21 19:09:59 esolr kernel: [ 18.787931] ? ipv6_gro_receive+0x1a6/0x350 May 21 19:09:59 esolr kernel: [ 18.787932] __netif_receive_skb+0x18/0x60 May 21 19:09:59 esolr kernel: [ 18.787933] ? __netif_receive_skb+0x18/0x60 May 21 19:09:59 esolr kernel: [ 18.787935] netif_receive_skb_internal+0x45/0xe0 May 21 19:09:59 esolr kernel: [ 18.787937] napi_gro_receive+0xc5/0xf0 May 21 19:09:59 esolr kernel: [ 18.787941] receive_buf+0x346/0x17a0 [virtio_net] May 21 19:09:59 esolr kernel: [ 18.787942] ? check_preempt_curr+0x2d/0x90 May 21 19:09:59 esolr kernel: [ 18.787943] ? ttwu_do_wakeup+0x1e/0x140 May 21 19:09:59 esolr kernel: [ 18.787944] ? ttwu_do_activate+0x77/0x80 May 21 19:09:59 esolr kernel: [ 18.787960] ? vring_unmap_one+0x1b/0x80 May 21 19:09:59 esolr kernel: [ 18.787962] ? detach_buf+0x71/0x120 May 21 19:09:59 esolr kernel: [ 18.787964] virtnet_poll+0x152/0x2f7 [virtio_net] May 21 19:09:59 esolr kernel: [ 18.787966] net_rx_action+0x140/0x3d0 May 21 19:09:59 esolr kernel: [ 18.787975] __do_softirq+0xe4/0x2d4 May 21 19:09:59 esolr kernel: [ 18.787979] irq_exit+0xc5/0xd0 May 21 19:09:59 esolr kernel: [ 18.787981] do_IRQ+0x86/0xe0 May 21 19:09:59 esolr kernel: [ 18.787982] common_interrupt+0x90/0x90 May 21 19:09:59 esolr kernel: [ 18.787983] </IRQ> May 21 19:09:59 esolr kernel: [ 18.787984] RIP: 0033:0x57023c May 21 19:09:59 esolr kernel: [ 18.787985] RSP: 002b:00007fffc87d1d80 EFLAGS: 00000202 ORIG_RAX: ffffffffffffffce May 21 19:09:59 esolr kernel: [ 18.787986] RAX: 0000000000004000 RBX: 00007f0403dc4998 RCX: 0000000000003fff May 21 19:09:59 esolr kernel: [ 18.787987] RDX: 00007f0403e96010 RSI: 00007f0403e96038 RDI: 00000000009d4540 May 21 19:09:59 esolr kernel: [ 18.787987] RBP: 00007f04071960d8 R08: 00007f0403e96038 R09: 00007f0403e9e038 May 21 19:09:59 esolr kernel: [ 18.787988] R10: 00007f0403dc49c8 R11: 0000000000000065 R12: 0000000000000fe0 May 21 19:09:59 esolr kernel: [ 18.787988] R13: 5c66abb0f49a0fe0 R14: 00007f0403dc4998 R15: 0000000000000857 May 21 19:09:59 esolr kernel: [ 18.787989] Code: 01 00 00 85 d2 74 df 48 c7 c7 f8 62 eb b3 e8 50 49 15 00 0f 0b 8b 83 f8 00 00 00 85 c0 74 d1 48 c7 c7 f8 62 eb b3 e8 38 49 15 00 <0f> 0b 5b 41 5c 5d c3 48 c7 c7 f8 62 eb b3 e8 25 49 15 00 0f 0b May 21 19:09:59 esolr kernel: [ 18.788006] ---[ end trace 84d6c7d5cb7756cd ]--- --- ProblemType: Bug AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 May 21 22:41 seq crw-rw---- 1 root audio 116, 33 May 21 22:41 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu7.29 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: N/A DistroRelease: Ubuntu 18.04 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: DigitalOcean Droplet Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-210-generic root=UUID=143c811b-9b9c-48f3-b0c8-040f6e65f50a ro console=tty1 console=ttyS0 net.ifnames=0 biosdevname=0 ProcVersionSignature: Ubuntu 4.15.0-210.221-generic 4.15.18 RelatedPackageVersions: linux-restricted-modules-4.15.0-210-generic N/A linux-backports-modules-4.15.0-210-generic N/A linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' Tags: bionic uec-images Uname: Linux 4.15.0-210-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 12/12/2017 dmi.bios.vendor: DigitalOcean dmi.bios.version: 20171212 dmi.board.asset.tag: 17601301 dmi.board.name: Droplet dmi.board.vendor: DigitalOcean dmi.board.version: 20171212 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-6.1 dmi.modalias: dmi:bvnDigitalOcean:bvr20171212:bd12/12/2017:svnDigitalOcean:pnDroplet:pvr20171212:rvnDigitalOcean:rnDroplet:rvr20171212:cvnQEMU:ct1:cvrpc-i440fx-6.1: dmi.product.family: DigitalOcean_Droplet dmi.product.name: Droplet dmi.product.version: 20171212 dmi.sys.vendor: DigitalOcean To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2020279/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
