I'm also affected by this bug: - 4.15.0-151-generic freezes - 4.15.0-147-generic does not freeze (previous available kernel in grub)
My CPU: Intel(R) Core(TM) i7-7700T CPU @ 2.90GHz The freeze happens generally at the login screenshot (sometimes before, sometimes after, but shortly after booting in any cases). I am forced to reboot my computer and select the older kernel in grub to properly boot. In /var/log/kern.log I see Oops: ``` Jul 31 08:02:02 pel-cirrus7 kernel: [ 5.760459] usbcore: registered new interface driver snd-usb-audio Jul 31 08:02:02 pel-cirrus7 kernel: [ 5.782978] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 Jul 31 08:02:02 pel-cirrus7 kernel: [ 5.782979] Bluetooth: BNEP filters: protocol multicast Jul 31 08:02:02 pel-cirrus7 kernel: [ 5.782981] Bluetooth: BNEP socket layer initialized Jul 31 08:02:02 pel-cirrus7 kernel: [ 5.994114] IPv6: ADDRCONF(NETDEV_UP): enp0s31f6: link is not ready Jul 31 08:02:02 pel-cirrus7 kernel: [ 6.185403] IPv6: ADDRCONF(NETDEV_UP): enp0s31f6: link is not ready Jul 31 08:02:02 pel-cirrus7 kernel: [ 6.190802] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready Jul 31 08:02:02 pel-cirrus7 kernel: [ 6.239802] r8169 0000:04:00.0 enp4s0: link down Jul 31 08:02:02 pel-cirrus7 kernel: [ 6.239893] IPv6: ADDRCONF(NETDEV_UP): enp4s0: link is not ready Jul 31 08:02:02 pel-cirrus7 kernel: [ 6.242976] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready Jul 31 08:02:02 pel-cirrus7 kernel: [ 6.248737] ip6_tables: (C) 2000-2006 Netfilter Core Team Jul 31 08:02:02 pel-cirrus7 kernel: [ 6.270569] Ebtables v2.0 registered Jul 31 08:02:02 pel-cirrus7 kernel: [ 6.337871] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready Jul 31 08:02:02 pel-cirrus7 kernel: [ 6.405469] IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready Jul 31 08:02:03 pel-cirrus7 kernel: [ 6.774881] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this. Jul 31 08:02:03 pel-cirrus7 kernel: [ 6.775624] virbr0: port 1(virbr0-nic) entered blocking state Jul 31 08:02:03 pel-cirrus7 kernel: [ 6.775625] virbr0: port 1(virbr0-nic) entered disabled state Jul 31 08:02:03 pel-cirrus7 kernel: [ 6.775673] device virbr0-nic entered promiscuous mode Jul 31 08:02:03 pel-cirrus7 kernel: [ 6.852658] nf_conntrack version 0.5.0 (65536 buckets, 262144 max) Jul 31 08:02:03 pel-cirrus7 kernel: [ 7.331935] virbr0: port 1(virbr0-nic) entered blocking state Jul 31 08:02:03 pel-cirrus7 kernel: [ 7.331937] virbr0: port 1(virbr0-nic) entered listening state Jul 31 08:02:03 pel-cirrus7 kernel: [ 7.372079] virbr0: port 1(virbr0-nic) entered disabled state Jul 31 08:02:06 pel-cirrus7 kernel: [ 9.928363] wlp2s0: authenticate with ec:8a:4c:94:01:aa Jul 31 08:02:06 pel-cirrus7 kernel: [ 9.932925] wlp2s0: send auth to ec:8a:4c:94:01:aa (try 1/3) Jul 31 08:02:06 pel-cirrus7 kernel: [ 9.935089] wlp2s0: authenticated Jul 31 08:02:06 pel-cirrus7 kernel: [ 9.937297] wlp2s0: associate with ec:8a:4c:94:01:aa (try 1/3) Jul 31 08:02:06 pel-cirrus7 kernel: [ 9.940968] wlp2s0: RX AssocResp from ec:8a:4c:94:01:aa (capab=0x411 status=0 aid=4) Jul 31 08:02:06 pel-cirrus7 kernel: [ 9.943040] wlp2s0: associated Jul 31 08:02:06 pel-cirrus7 kernel: [ 9.976222] IPv6: ADDRCONF(NETDEV_CHANGE): wlp2s0: link becomes ready Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143178] BUG: unable to handle kernel paging request at ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143192] IP: kmem_cache_alloc+0x7a/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143195] PGD 22a799067 P4D 22a799067 PUD 0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143201] Oops: 0000 [#1] SMP PTI Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143204] Modules linked in: ccm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc devlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep snd_hda_codec_hdmi snd_hda_codec_realtek eeepc_wmi asus_wmi snd_hda_codec_generic intel_rapl x86_pkg_temp_thermal sparse_keymap intel_powerclamp wmi_bmof coretemp mxm_wmi arc4 snd_hda_intel crct10dif_pclmul crc32_pclmul snd_usb_audio snd_hda_codec ghash_clmulni_intel snd_hda_core snd_usbmidi_lib pcbc snd_hwdep snd_seq_midi snd_seq_midi_event iwlmvm snd_rawmidi aesni_intel btusb aes_x86_64 btrtl crypto_simd btbcm glue_helper mac80211 joydev uvcvideo cryptd snd_pcm snd_seq Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143244] i915 videobuf2_vmalloc btintel videobuf2_memops videobuf2_v4l2 input_leds bluetooth videobuf2_core videodev media intel_cstate iwlwifi snd_seq_device ecdh_generic intel_rapl_perf snd_timer drm_kms_helper snd cfg80211 drm i2c_algo_bit fb_sys_fops mei_me syscopyarea sysfillrect serio_raw soundcore mei sysimgblt shpchp wmi video acpi_pad mac_hid binfmt_misc kvm_intel kvm irqbypass sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_apple hid_generic usbhid hid e1000e r8169 nvme ahci ptp psmouse pps_core nvme_core mii libahci Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143281] CPU: 1 PID: 1471 Comm: udevadm Not tainted 4.15.0-151-generic #157-Ubuntu Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143284] Hardware name: System manufacturer System Product Name/Q170T, BIOS 3402 04/07/2017 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143288] RIP: 0010:kmem_cache_alloc+0x7a/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143291] RSP: 0018:ffffa01dc2697c50 EFLAGS: 00010286 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143295] RAX: ffff8c1a10e5f224 RBX: 00000000014080c0 RCX: ffff8c789a5834d0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143297] RDX: 0000000000005158 RSI: 00000000014080c0 RDI: 0000000000027080 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143299] RBP: ffffa01dc2697c80 R08: ffff8c78b5c67080 R09: ffffffffffffffc0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143302] R10: ffffa01dc2697eb8 R11: 0000000000000000 R12: ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143304] R13: 00000000014080c0 R14: ffff8c78a5205c80 R15: ffff8c78a5205c80 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143308] FS: 00007f6ccf039680(0000) GS:ffff8c78b5c40000(0000) knlGS:0000000000000000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143310] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143313] CR2: ffff8c1a10e5f224 CR3: 00000003f4054003 CR4: 00000000003606e0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143315] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143318] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143320] Call Trace: Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143327] ? get_empty_filp+0x5c/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143332] get_empty_filp+0x5c/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143339] ? _cond_resched+0x19/0x40 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143344] path_openat+0x40/0x18b0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143348] ? mntput+0x24/0x40 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143352] ? terminate_walk+0xe5/0x100 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143356] ? path_lookupat+0xaa/0x1f0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143361] do_filp_open+0x9b/0x110 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143367] ? __check_object_size+0xc8/0x1b0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143373] ? __alloc_fd+0x46/0x170 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143378] do_sys_open+0x1ba/0x2c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143383] ? do_sys_open+0x1ba/0x2c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143387] ? __put_cred+0x51/0x60 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143392] ? SyS_access+0x147/0x230 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143397] SyS_openat+0x14/0x20 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143402] do_syscall_64+0x73/0x130 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143406] entry_SYSCALL_64_after_hwframe+0x41/0xa6 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143410] RIP: 0033:0x7f6cceb61d5e Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143413] RSP: 002b:00007fff3caf6260 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143416] RAX: ffffffffffffffda RBX: 000055ac56143ac0 RCX: 00007f6cceb61d5e Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143418] RDX: 0000000000080000 RSI: 00007fff3caf6450 RDI: 00000000ffffff9c Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143421] RBP: 000055ac54d58c0b R08: 0000000000000000 R09: 000055ac54d58c0d Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143423] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143425] R13: 000055ac54d58c0b R14: 000055ac561537b0 R15: 00007fff3caf6450 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143428] Code: 50 08 65 4c 03 05 0f d5 1b 54 49 83 78 10 00 4d 8b 20 0f 84 09 01 00 00 4d 85 e4 0f 84 00 01 00 00 49 63 47 20 49 8b 3f 4c 01 e0 <48> 8b 18 49 33 9f 40 01 00 00 48 89 c1 48 0f c9 4c 89 e0 48 31 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143463] RIP: kmem_cache_alloc+0x7a/0x1c0 RSP: ffffa01dc2697c50 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143465] CR2: ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.143468] ---[ end trace 901cb03a2e22b099 ]--- Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.147985] BUG: unable to handle kernel paging request at ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.147996] IP: kmem_cache_alloc+0x7a/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.147998] PGD 22a799067 P4D 22a799067 PUD 0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148004] Oops: 0000 [#2] SMP PTI Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148007] Modules linked in: ccm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc devlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep snd_hda_codec_hdmi snd_hda_codec_realtek eeepc_wmi asus_wmi snd_hda_codec_generic intel_rapl x86_pkg_temp_thermal sparse_keymap intel_powerclamp wmi_bmof coretemp mxm_wmi arc4 snd_hda_intel crct10dif_pclmul crc32_pclmul snd_usb_audio snd_hda_codec ghash_clmulni_intel snd_hda_core snd_usbmidi_lib pcbc snd_hwdep snd_seq_midi snd_seq_midi_event iwlmvm snd_rawmidi aesni_intel btusb aes_x86_64 btrtl crypto_simd btbcm glue_helper mac80211 joydev uvcvideo cryptd snd_pcm snd_seq Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148042] i915 videobuf2_vmalloc btintel videobuf2_memops videobuf2_v4l2 input_leds bluetooth videobuf2_core videodev media intel_cstate iwlwifi snd_seq_device ecdh_generic intel_rapl_perf snd_timer drm_kms_helper snd cfg80211 drm i2c_algo_bit fb_sys_fops mei_me syscopyarea sysfillrect serio_raw soundcore mei sysimgblt shpchp wmi video acpi_pad mac_hid binfmt_misc kvm_intel kvm irqbypass sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_apple hid_generic usbhid hid e1000e r8169 nvme ahci ptp psmouse pps_core nvme_core mii libahci Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148074] CPU: 1 PID: 310 Comm: systemd-journal Tainted: G D 4.15.0-151-generic #157-Ubuntu Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148077] Hardware name: System manufacturer System Product Name/Q170T, BIOS 3402 04/07/2017 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148082] RIP: 0010:kmem_cache_alloc+0x7a/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148085] RSP: 0018:ffffa01dc1e8fc50 EFLAGS: 00010286 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148088] RAX: ffff8c1a10e5f224 RBX: 00000000014080c0 RCX: ffff8c789aaea9d0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148091] RDX: 0000000000005158 RSI: 00000000014080c0 RDI: 0000000000027080 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148093] RBP: ffffa01dc1e8fc80 R08: ffff8c78b5c67080 R09: fffc400000008000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148095] R10: ffffa01dc1e8feb8 R11: 0000000000000000 R12: ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148098] R13: 00000000014080c0 R14: ffff8c78a5205c80 R15: ffff8c78a5205c80 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148101] FS: 00007fc2b7a95940(0000) GS:ffff8c78b5c40000(0000) knlGS:0000000000000000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148104] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148106] CR2: ffff8c1a10e5f224 CR3: 000000041ba0e005 CR4: 00000000003606e0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148109] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148111] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148113] Call Trace: Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148119] ? get_empty_filp+0x5c/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148125] get_empty_filp+0x5c/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148130] ? set_page_dirty+0x5e/0xb0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148134] path_openat+0x40/0x18b0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148140] ? put_dec+0x18/0xa0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148144] ? number+0x30a/0x330 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148150] ? __unlock_page_memcg+0x30/0x50 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148154] ? ___slab_alloc+0x10b/0x4f0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148158] ? ___slab_alloc+0x10b/0x4f0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148163] do_filp_open+0x9b/0x110 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148168] ? __check_object_size+0xc8/0x1b0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148174] ? __alloc_fd+0x46/0x170 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148179] do_sys_open+0x1ba/0x2c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148184] ? do_sys_open+0x1ba/0x2c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148189] SyS_openat+0x14/0x20 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148194] do_syscall_64+0x73/0x130 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148198] entry_SYSCALL_64_after_hwframe+0x41/0xa6 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148202] RIP: 0033:0x7fc2b75c7de9 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148204] RSP: 002b:00007ffe6bb4f540 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148207] RAX: ffffffffffffffda RBX: 0000000000000105 RCX: 00007fc2b75c7de9 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148210] RDX: 0000000000080002 RSI: 000055a1444f9c00 RDI: 00000000ffffff9c Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148212] RBP: 00007ffe6bb4f800 R08: 0000000000000000 R09: 0000000000000000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148214] R10: 0000000000000000 R11: 0000000000000293 R12: 00000000ffffffff Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148216] R13: 000055a1444d4e90 R14: 000055a1444e4660 R15: 00007ffe6bb4f7c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148220] Code: 50 08 65 4c 03 05 0f d5 1b 54 49 83 78 10 00 4d 8b 20 0f 84 09 01 00 00 4d 85 e4 0f 84 00 01 00 00 49 63 47 20 49 8b 3f 4c 01 e0 <48> 8b 18 49 33 9f 40 01 00 00 48 89 c1 48 0f c9 4c 89 e0 48 31 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148255] RIP: kmem_cache_alloc+0x7a/0x1c0 RSP: ffffa01dc1e8fc50 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148257] CR2: ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.148260] ---[ end trace 901cb03a2e22b09a ]--- Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223339] BUG: unable to handle kernel paging request at ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223356] IP: kmem_cache_alloc+0x7a/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223360] PGD 22a799067 P4D 22a799067 PUD 0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223368] Oops: 0000 [#3] SMP PTI Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223372] Modules linked in: ccm xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack libcrc32c ipt_REJECT nf_reject_ipv4 xt_tcpudp bridge stp llc devlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter cmac bnep snd_hda_codec_hdmi snd_hda_codec_realtek eeepc_wmi asus_wmi snd_hda_codec_generic intel_rapl x86_pkg_temp_thermal sparse_keymap intel_powerclamp wmi_bmof coretemp mxm_wmi arc4 snd_hda_intel crct10dif_pclmul crc32_pclmul snd_usb_audio snd_hda_codec ghash_clmulni_intel snd_hda_core snd_usbmidi_lib pcbc snd_hwdep snd_seq_midi snd_seq_midi_event iwlmvm snd_rawmidi aesni_intel btusb aes_x86_64 btrtl crypto_simd btbcm glue_helper mac80211 joydev uvcvideo cryptd snd_pcm snd_seq Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223424] i915 videobuf2_vmalloc btintel videobuf2_memops videobuf2_v4l2 input_leds bluetooth videobuf2_core videodev media intel_cstate iwlwifi snd_seq_device ecdh_generic intel_rapl_perf snd_timer drm_kms_helper snd cfg80211 drm i2c_algo_bit fb_sys_fops mei_me syscopyarea sysfillrect serio_raw soundcore mei sysimgblt shpchp wmi video acpi_pad mac_hid binfmt_misc kvm_intel kvm irqbypass sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_apple hid_generic usbhid hid e1000e r8169 nvme ahci ptp psmouse pps_core nvme_core mii libahci Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223473] CPU: 1 PID: 1475 Comm: systemd-journal Tainted: G D 4.15.0-151-generic #157-Ubuntu Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223477] Hardware name: System manufacturer System Product Name/Q170T, BIOS 3402 04/07/2017 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223484] RIP: 0010:kmem_cache_alloc+0x7a/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223487] RSP: 0018:ffffa01dc269fc50 EFLAGS: 00010286 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223492] RAX: ffff8c1a10e5f224 RBX: 00000000014080c0 RCX: ffff8c7874336700 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223495] RDX: 000000000000516e RSI: 00000000014080c0 RDI: 0000000000027080 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223499] RBP: ffffa01dc269fc80 R08: ffff8c78b5c67080 R09: fffe000000000000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223502] R10: ffffa01dc269feb8 R11: 0000000000000000 R12: ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223505] R13: 00000000014080c0 R14: ffff8c78a5205c80 R15: ffff8c78a5205c80 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223510] FS: 00007fbd9cf2f940(0000) GS:ffff8c78b5c40000(0000) knlGS:0000000000000000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223513] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223517] CR2: ffff8c1a10e5f224 CR3: 000000041bd78006 CR4: 00000000003606e0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223521] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223524] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223526] Call Trace: Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223536] ? get_empty_filp+0x5c/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223543] get_empty_filp+0x5c/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223550] path_openat+0x40/0x18b0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223556] ? filename_lookup+0xf2/0x190 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223564] do_filp_open+0x9b/0x110 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223572] ? __check_object_size+0xc8/0x1b0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223579] ? __alloc_fd+0x46/0x170 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223587] do_sys_open+0x1ba/0x2c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223593] ? do_sys_open+0x1ba/0x2c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223601] SyS_openat+0x14/0x20 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223608] do_syscall_64+0x73/0x130 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223614] entry_SYSCALL_64_after_hwframe+0x41/0xa6 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223619] RIP: 0033:0x7fbd9ca61f83 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223622] RSP: 002b:00007ffd6eb57bb0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223626] RAX: ffffffffffffffda RBX: 00005595d5aca9c0 RCX: 00007fbd9ca61f83 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223630] RDX: 00000000000e0800 RSI: 00005595d5ac0740 RDI: 0000000000000030 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223633] RBP: 00007fbd9cf2f8c0 R08: 0000000000000001 R09: 0000000000000000 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223636] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223639] R13: 00005595d5ac0740 R14: 0000000000000030 R15: 00005595d5acab2b Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223643] Code: 50 08 65 4c 03 05 0f d5 1b 54 49 83 78 10 00 4d 8b 20 0f 84 09 01 00 00 4d 85 e4 0f 84 00 01 00 00 49 63 47 20 49 8b 3f 4c 01 e0 <48> 8b 18 49 33 9f 40 01 00 00 48 89 c1 48 0f c9 4c 89 e0 48 31 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223691] RIP: kmem_cache_alloc+0x7a/0x1c0 RSP: ffffa01dc269fc50 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223694] CR2: ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.223699] ---[ end trace 901cb03a2e22b09b ]--- Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.253191] BUG: unable to handle kernel paging request at ffff8c1a10e5f224 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.253205] IP: kmem_cache_alloc+0x7a/0x1c0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.253207] PGD 22a799067 P4D 22a799067 PUD 0 Jul 31 08:02:08 pel-cirrus7 kernel: [ 12.253214] Oops: 0000 [#4] SMP PTI etc. ``` -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1938013 Title: 4.15.0-151 is freezing various CPUs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1938013/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com 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