Description of problem: Occasional process hang; messages broadcast to ttys via syslog: Message from syslogd@lap at Feb 19 10:59:10 ... kernel:page:fffffac1800a0000 count:513 mapcount:1 mapping:ffff95657ef359a1 index:0x7f95d3400 compound_mapcount: 0 Message from syslogd@lap at Feb 19 10:59:10 ... kernel:flags: 0xffffe00048268(uptodate|lru|active|owner_priv_1|head|swapbacked) Seen to affect firefox and virt-machine-manager at least; one it has occurred many programs cannot be started afresh (the WM cursor spins for ~20s). Version-Release number of selected component (if applicable): 4.15.3-300.fc27.x86_64 How reproducible: Seen about 3 times over the last week. Steps to Reproduce: 1. Normal system operations (laptop; multiple VMs running) Additional info: /var/log/messages: Feb 19 10:59:10 lap kernel: page:fffffac1800a0000 count:513 mapcount:1 mapping:ffff95657ef359a1 index:0x7f95d3400 compound_mapcount: 0 Feb 19 10:59:10 lap kernel: flags: 0xffffe00048268(uptodate|lru|active|owner_priv_1|head|swapbacked) Feb 19 10:59:10 lap kernel: raw: 000ffffe00048268 ffff95657ef359a1 00000007f95d3400 0000020100000000 Feb 19 10:59:10 lap kernel: raw: fffffac18edea9a0 fffffac18e7085a0 00000000000db400 ffff9567a3269800 Feb 19 10:59:10 lap kernel: page dumped because: VM_BUG_ON_PAGE(PageCompound(page)) Feb 19 10:59:10 lap kernel: page->mem_cgroup:ffff9567a3269800 Feb 19 10:59:10 lap kernel: ------------[ cut here ]------------ Feb 19 10:59:10 lap kernel: kernel BUG at mm/khugepaged.c:533! Feb 19 10:59:10 lap kernel: invalid opcode: 0000 [#1] SMP PTI Feb 19 10:59:10 lap kernel: Modules linked in: vhost_net vhost tap fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables sunrpc vfat fat rmi_smbus rmi_core arc4 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_hdmi iwlmvm kvm_intel iTCO_wdt mac80211 snd_hda_codec_realtek iTCO_vendor_support mei_wdt kvm snd_hda_codec_generic irqbypass intel_cstate snd_hda_intel intel_uncore iwlwifi uvcvideo intel_rapl_perf Feb 19 10:59:10 lap kernel: snd_hda_codec videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core snd_hda_core cfg80211 videodev snd_hwdep snd_seq snd_seq_device snd_pcm media mei_me snd_timer thinkpad_acpi wmi_bmof rtsx_pci_ms joydev tpm_tis memstick i2c_i801 mei tpm_tis_core snd soundcore intel_pch_thermal tpm shpchp rfkill dm_crypt hid_logitech_hidpp hid_logitech_dj mmc_block nouveau i915 rtsx_pci_sdmmc mmc_core mxm_wmi ttm e1000e i2c_algo_bit drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel ptp drm ghash_clmulni_intel serio_raw rtsx_pci pps_core wmi video Feb 19 10:59:10 lap kernel: CPU: 2 PID: 66 Comm: khugepaged Not tainted 4.15.3-300.fc27.x86_64 #1 Feb 19 10:59:10 lap kernel: Hardware name: LENOVO 20FXS0BB14/20FXS0BB14, BIOS R07ET63W (2.03 ) 03/15/2016 Feb 19 10:59:10 lap kernel: RIP: 0010:khugepaged+0x1af6/0x2130 Feb 19 10:59:10 lap kernel: RSP: 0018:ffffacacc1b4bdc0 EFLAGS: 00010282 Feb 19 10:59:10 lap kernel: RAX: 0000000000000021 RBX: fffffac1800a0000 RCX: 0000000000000006 Feb 19 10:59:10 lap kernel: RDX: 0000000000000000 RSI: 0000000000000086 RDI: ffff9567c14968f0 Feb 19 10:59:10 lap kernel: RBP: fffffac18e3a5b40 R08: 00000000000004a8 R09: 0000000000000004 Feb 19 10:59:10 lap kernel: R10: ffffacacc1b4bd70 R11: ffffffffb995b1ed R12: 00007f95f7e00000 Feb 19 10:59:10 lap kernel: R13: ffff95661113eaf0 R14: ffff9567a9ea0000 R15: 8000000002800825 Feb 19 10:59:10 lap kernel: FS: 0000000000000000(0000) GS:ffff9567c1480000(0000) knlGS:0000000000000000 Feb 19 10:59:10 lap kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Feb 19 10:59:10 lap kernel: CR2: 0000000000481046 CR3: 00000002ee20a005 CR4: 00000000003626e0 Feb 19 10:59:10 lap kernel: Call Trace: Feb 19 10:59:10 lap kernel: ? finish_wait+0x80/0x80 Feb 19 10:59:10 lap kernel: ? collapse_shmem+0xdd0/0xdd0 Feb 19 10:59:10 lap kernel: kthread+0x113/0x130 Feb 19 10:59:10 lap kernel: ? kthread_create_worker_on_cpu+0x70/0x70 Feb 19 10:59:10 lap kernel: ret_from_fork+0x35/0x40 Feb 19 10:59:10 lap kernel: Code: ff e9 e7 fd ff ff bb 07 00 00 00 49 89 c7 e9 20 fb ff ff 48 83 ea 01 e9 66 fc ff ff 48 c7 c6 d8 3f 0a b9 48 89 df e8 0a 82 fa ff <0f> 0b 31 c9 4c 89 fa 48 89 de 4c 89 f7 e8 58 f1 fd ff e9 2e fa Feb 19 10:59:10 lap kernel: RIP: khugepaged+0x1af6/0x2130 RSP: ffffacacc1b4bdc0 Feb 19 10:59:10 lap kernel: ---[ end trace a734c2f4d682e3bd ]--- Feb 19 10:59:11 lap abrt-dump-journal-oops[1080]: abrt-dump-journal-oops: Found oopses: 1 Feb 19 10:59:11 lap abrt-dump-journal-oops[1080]: abrt-dump-journal-oops: Creating problem directories Feb 19 10:59:11 lap abrt-server[17302]: Deleting problem directory oops-2018-02-19-10:59:11-1080-0 (dup of oops-2018-02-13-14:17:42-1042-0) Feb 19 10:59:12 lap abrt-notification[17309]: System encountered a non-fatal error in finish_wait() Feb 19 10:59:12 lap abrt-dump-journal-oops[1080]: Reported 1 kernel oopses to Abrt
*** Bug 1538411 has been marked as a duplicate of this bug. ***
Upstream gave a fix, can you try this scratch build when it finishes? https://koji.fedoraproject.org/koji/taskinfo?taskID=25238698
Running the scratch build kernel (kernel-4.15.4-301.rhbz1546709.fc27.x86_64) in the past 2 weeks, didn't see the original kernel call trace.
kernel-4.15.10-300.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2018-959aac67a3
kernel-4.15.10-200.fc26 has been submitted as an update to Fedora 26. https://bodhi.fedoraproject.org/updates/FEDORA-2018-296bf0c332
kernel-4.15.10-200.fc26 has been pushed to the Fedora 26 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-296bf0c332
kernel-4.15.10-300.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-959aac67a3
kernel-4.15.10-200.fc26 has been pushed to the Fedora 26 stable repository. If problems still persist, please make note of it in this bug report.
kernel-4.15.10-300.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.