This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1829994 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Changed in: linux (Ubuntu Cosmic) Status: New => Incomplete -- 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/1829994 Title: block_dev from kernel_misc test suite in LTP generates kernel traces Status in ubuntu-kernel-tests: New Status in linux package in Ubuntu: Incomplete Status in linux source package in Cosmic: Incomplete Bug description: The test will pass, but there will be some kernel trace messages in the syslog: ltp_block_dev: Test Case 7: unregister_blkdev() with major=0 WARNING: CPU: 0 PID: 13195 at block/genhd.c:415 unregister_blkdev+0x64/0xb0 Modules linked in: ltp_block_dev(OE) msdos minix nls_iso8859_1 xfs binfmt_misc cfg80211 kvm_intel kvm irqbypass input_leds joydev serio_raw mac_hid 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 cirrus ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops floppy drm psmouse virtio_blk virtio_net net_failover i2c_piix4 failover pata_acpi [last unloaded: zram] CPU: 0 PID: 13195 Comm: block_dev Tainted: P W OE 4.18.0-20-generic #21-Ubuntu Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 RIP: 0010:unregister_blkdev+0x64/0xb0 Code: 00 48 63 c3 48 8b 04 c5 40 83 12 ad 48 85 c0 74 19 44 3b 60 08 75 0b eb 4c 44 39 63 08 74 2a 48 89 d8 48 8b 18 48 85 db 75 ef <0f> 0b 31 db 48 c7 c7 00 90 b7 ac e8 7c 88 55 00 48 89 df e8 f4 13 RSP: 0018:ffffbc89c0c8fdc0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff9cf134f7d700 RSI: ffffffffc09a4805 RDI: ffffffffacb79000 RBP: ffffbc89c0c8fdd8 R08: ffff9cf13fc27080 R09: 000000000000142f R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffffc09a4805 R14: ffffbc89c0c8fee8 R15: fffffffffffffff2 FS: 00007fa58aa0d5c0(0000) GS:ffff9cf13fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556033aef4c8 CR3: 0000000074b1e000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: sys_tcase.cold.0+0x1e8/0x77b [ltp_block_dev] dev_attr_store+0x1b/0x30 sysfs_kf_write+0x3b/0x50 kernfs_fop_write+0x12e/0x1b0 __vfs_write+0x1b/0x40 vfs_write+0xab/0x1b0 ksys_write+0x55/0xc0 __x64_sys_write+0x1a/0x20 do_syscall_64+0x5a/0x110 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fa58a92bfd4 Code: 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b3 0f 1f 80 00 00 00 00 48 8d 05 29 f7 0d 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53 RSP: 002b:00007fff0cd747c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fa58a92bfd4 RDX: 0000000000000001 RSI: 0000556033aee4c0 RDI: 0000000000000015 RBP: 0000556033aee4c0 R08: 00007fa58aa0d5c0 R09: 0000000000000000 R10: 0000556032d004f6 R11: 0000000000000246 R12: 0000556033aed280 R13: 0000000000000001 R14: 00007fa58aa032a0 R15: 00007fa58aa02760 ---[ end trace 7d89482f2331d988 ]--- 0 test cases failed startup='Wed May 22 07:57:20 2019' block_dev 1 TPASS : Test-case '1' block_dev 2 TPASS : Test-case '2' block_dev 3 TPASS : Test-case '3' block_dev 4 TPASS : Test-case '4' block_dev 5 TPASS : Test-case '5' block_dev 6 TPASS : Test-case '6' block_dev 7 TPASS : Test-case '7' tag=block_dev stime=1558511840 dur=0 exit=exited stat=0 core=no cu=0 cs=0 ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: linux-image-4.18.0-20-generic 4.18.0-20.21 ProcVersionSignature: User Name 4.18.0-20.21-generic 4.18.20 Uname: Linux 4.18.0-20-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 May 22 06:28 seq crw-rw---- 1 root audio 116, 33 May 22 06:28 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.10-0ubuntu13.3 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: CurrentDmesg: Date: Wed May 22 07:57:40 2019 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: QEMU Standard PC (i440FX + PIIX, 1996) PciMultimedia: ProcFB: 0 cirrusdrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-20-generic root=UUID=2a4b0342-a2dd-4feb-b3e2-9644ca1c4a60 ro RelatedPackageVersions: linux-restricted-modules-4.18.0-20-generic N/A linux-backports-modules-4.18.0-20-generic N/A linux-firmware 1.175.4 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: Ubuntu-1.8.2-1ubuntu1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-xenial dmi.modalias: dmi:bvnSeaBIOS:bvrUbuntu-1.8.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-xenial:cvnQEMU:ct1:cvrpc-i440fx-xenial: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-xenial dmi.sys.vendor: QEMU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1829994/+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