For reference, this is the Warning in the CurrentDmesg.txt file. [ 71.925684] WARNING: CPU: 8 PID: 2977 at /build/linux-jmOa1Y/linux-4.15.0/drivers/md/bcache/writeback.c:603 bch_cached_dev_writeback_start+0x13f/0x1af [bcache] [ 71.925686] Modules linked in: ebtable_filter ebtables ip6table_filter ip6_tables devlink iptable_filter nls_utf8 cifs ccm fscache bridge stp llc bonding nls_iso8859_1 intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass ttm drm_kms_helper crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc drm fb_sys_fops syscopyarea sysfillrect sysimgblt aesni_intel mxm_wmi aes_x86_64 crypto_simd glue_helper uvcvideo cryptd snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_hda_codec videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core snd_hda_core videodev media intel_cstate snd_hwdep snd_pcm snd_timer snd intel_rapl_perf input_leds soundcore shpchp serio_raw ioatdma mei_me lpc_ich mei mac_hid wmi sch_fq_codel vhost_net vhost tap coretemp [ 71.925727] 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 bcache raid1 hid_generic usbhid hid igb i2c_algo_bit dca firewire_ohci isci ahci ptp firewire_core libahci crc_itu_t libsas pps_core nvme scsi_transport_sas nvme_core [ 71.925751] CPU: 8 PID: 2977 Comm: bash Not tainted 4.15.0-54-generic #58-Ubuntu [ 71.925752] Hardware name: Supermicro X9DAi/X9DAi, BIOS 3.2 05/09/2015 [ 71.925759] RIP: 0010:bch_cached_dev_writeback_start+0x13f/0x1af [bcache] [ 71.925760] RSP: 0018:ffffa784c96abd08 EFLAGS: 00010287 [ 71.925761] RAX: ffff967af8bfdb00 RBX: ffff967af3660000 RCX: 0000000000000000 [ 71.925762] RDX: 0000000000000000 RSI: ffff967aff2a70a0 RDI: ffff966aff407780 [ 71.925763] RBP: ffffa784c96abd10 R08: 00000000000270a0 R09: ffffffffaecaf22d [ 71.925764] R10: 0000000000000000 R11: 000000000000024b R12: ffff967af3660010 [ 71.925765] R13: ffff967af3660000 R14: ffff967af4320000 R15: ffff967af3660ac8 [ 71.925767] FS: 00007f7759f51740(0000) GS:ffff967aff280000(0000) knlGS:0000000000000000 [ 71.925768] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.925770] CR2: 00007fff24052e08 CR3: 0000001ff4410001 CR4: 00000000000626e0 [ 71.925771] Call Trace: [ 71.925781] bch_cached_dev_attach+0x34b/0x510 [bcache] [ 71.925787] ? kernfs_fop_write+0xcb/0x1a0 [ 71.925793] __cached_dev_store+0x5c1/0x6d0 [bcache] [ 71.925798] ? __cached_dev_store+0x5c1/0x6d0 [bcache] [ 71.925804] bch_cached_dev_store+0x39/0xc0 [bcache] [ 71.925806] sysfs_kf_write+0x3c/0x50 [ 71.925808] kernfs_fop_write+0x125/0x1a0 [ 71.925811] __vfs_write+0x1b/0x40 [ 71.925813] vfs_write+0xb1/0x1a0 [ 71.925814] SyS_write+0x55/0xc0 [ 71.925819] do_syscall_64+0x73/0x130 [ 71.925825] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 71.925826] RIP: 0033:0x7f775962b154 [ 71.925827] RSP: 002b:00007fff76f6a788 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 71.925829] RAX: ffffffffffffffda RBX: 0000000000000025 RCX: 00007f775962b154 [ 71.925830] RDX: 0000000000000025 RSI: 000055c6907e0140 RDI: 0000000000000001 [ 71.925831] RBP: 000055c6907e0140 R08: 000000000000000a R09: 0000000000000024 [ 71.925832] R10: 000000000000000a R11: 0000000000000246 R12: 00007f7759907760 [ 71.925833] R13: 0000000000000025 R14: 00007f77599032a0 R15: 00007f7759902760 [ 71.925834] Code: 0a 00 00 0f 88 84 00 00 00 75 18 48 8b 35 c2 13 e2 ef 48 8d 93 a0 0a 00 00 bf 00 20 00 00 e8 f9 a6 86 ee 8b 83 80 0b 00 00 eb a1 <0f> 0b e9 5c ff ff ff b8 f4 ff ff ff eb 93 49 8d 8c 24 88 0a 00 [ 71.925865] ---[ end trace b657ee904e9a8497 ]--- [ 71.925880] bcache: bch_cached_dev_attach() Caching md1 as bcache0 on set eb92c552-bd01-458a-994e-7f8760fd6342
-- 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/1837788 Title: bcache kernel warning when attaching device Status in linux package in Ubuntu: Confirmed Bug description: See attached dmesg, each time this server is rebooted it emits a concerning bcache warning. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-54-generic 4.15.0-54.58 ProcVersionSignature: Ubuntu 4.15.0-54.58-generic 4.15.18 Uname: Linux 4.15.0-54-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.15.0-54-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu7.7 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D2', '/dev/snd/pcmC0D2c', '/dev/snd/pcmC0D3c', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D3p', '/dev/snd/controlC1', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer': 'amixer' Date: Wed Jul 24 12:28:06 2019 InstallationDate: Installed on 2013-10-04 (2119 days ago) InstallationMedia: Ubuntu-Server 13.10 "Saucy Salamander" - Beta amd64 (20130925.1) MachineType: Supermicro X9DAi ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-54-generic root=UUID=8577302d-1f37-40a6-afcd-385beb26059f ro nomodeset elevator=deadline nvme_core.default_ps_max_latency_us=0 nopti noibrs noibpb RelatedPackageVersions: linux-restricted-modules-4.15.0-54-generic N/A linux-backports-modules-4.15.0-54-generic N/A linux-firmware 1.173.9 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to bionic on 2018-06-09 (409 days ago) dmi.bios.date: 05/09/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 3.2 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: X9DAi dmi.board.vendor: Supermicro dmi.board.version: 0123456789 dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Supermicro dmi.chassis.version: 0123456789 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr3.2:bd05/09/2015:svnSupermicro:pnX9DAi:pvr0123456789:rvnSupermicro:rnX9DAi:rvr0123456789:cvnSupermicro:ct3:cvr0123456789: dmi.product.family: To be filled by O.E.M. dmi.product.name: X9DAi dmi.product.version: 0123456789 dmi.sys.vendor: Supermicro To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1837788/+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
