** Tags added: ubuntu-ltp
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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
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