>From LTP upstream feedback, this seems to be an expected behaviour.
http://lists.linux.it/pipermail/ltp/2019-June/012255.html
Thus I'm closing this.
** Changed in: ubuntu-kernel-tests
Status: New => Invalid
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1831595
Title:
block_dev test from kernel_misc in LTP is causing kernel traces
Status in ubuntu-kernel-tests:
Invalid
Status in linux package in Ubuntu:
Invalid
Bug description:
Reproduce rate: 100%
Steps:
1. git clone --depth=1 https://github.com/linux-test-project/ltp.git
2. cd ltp; make autotools; ./configure; make; sudo make install
3. Run the block_dev test:
cd /opt/ltp/testcases/bin
sudo ./block_dev
All 7 test cases will pass, but there will be a kernel warning trace in dmesg:
$ sudo ./block_dev
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'
[ 182.564296] ltp_block_dev: loading out-of-tree module taints kernel.
[ 182.564334] ltp_block_dev: module verification failed: signature and/or
required key missing - tainting kernel
[ 182.564547] ltp_block_dev: Starting module
[ 182.564557] ltp_block_dev: device registered
[ 182.564698] ltp_block_dev: Test Case 1: register_blkdev() with auto
allocating major numbers (major=0)
[ 182.564699] ltp_block_dev: Test Case Result: PASS
[ 182.564746] ltp_block_dev: Test Case 2: stress test of register_blkdev()
with auto allocating major numbers (major=0)
[ 182.564776] register_blkdev: failed to get major for ltp_block_dev
[ 182.564776] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564777] register_blkdev: failed to get major for ltp_block_dev
[ 182.564777] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564777] register_blkdev: failed to get major for ltp_block_dev
[ 182.564778] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564778] register_blkdev: failed to get major for ltp_block_dev
[ 182.564778] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564779] register_blkdev: failed to get major for ltp_block_dev
[ 182.564779] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564780] register_blkdev: failed to get major for ltp_block_dev
[ 182.564780] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564780] register_blkdev: failed to get major for ltp_block_dev
[ 182.564781] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564781] register_blkdev: failed to get major for ltp_block_dev
[ 182.564781] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564782] register_blkdev: failed to get major for ltp_block_dev
[ 182.564782] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564782] register_blkdev: failed to get major for ltp_block_dev
[ 182.564783] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564783] register_blkdev: failed to get major for ltp_block_dev
[ 182.564784] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564784] register_blkdev: failed to get major for ltp_block_dev
[ 182.564784] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564785] register_blkdev: failed to get major for ltp_block_dev
[ 182.564785] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564785] register_blkdev: failed to get major for ltp_block_dev
[ 182.564786] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564786] register_blkdev: failed to get major for ltp_block_dev
[ 182.564786] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564787] register_blkdev: failed to get major for ltp_block_dev
[ 182.564787] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564788] register_blkdev: failed to get major for ltp_block_dev
[ 182.564788] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564788] register_blkdev: failed to get major for ltp_block_dev
[ 182.564789] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564789] register_blkdev: failed to get major for ltp_block_dev
[ 182.564789] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564790] register_blkdev: failed to get major for ltp_block_dev
[ 182.564790] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564790] register_blkdev: failed to get major for ltp_block_dev
[ 182.564791] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564791] register_blkdev: failed to get major for ltp_block_dev
[ 182.564791] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564792] register_blkdev: failed to get major for ltp_block_dev
[ 182.564792] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564793] register_blkdev: failed to get major for ltp_block_dev
[ 182.564793] ltp_block_dev: device is busy, register_blkdev() ret -16
[ 182.564802] ltp_block_dev: Test Case Result: PASS
[ 182.564821] ltp_block_dev: Test Case 3: register_blkdev() with major != 0
[ 182.564822] register_blkdev: cannot get major 252 for ltp_block_dev
[ 182.564822] ltp_block_dev: Test Case Result: PASS
[ 182.564837] ltp_block_dev: Test Case 4: register_blkdev() with
major=256/511
[ 182.564838] ltp_block_dev: Test Case Result: PASS
[ 182.564853] ltp_block_dev: Test Case 5: register_blkdev() with
major=512/4294967295
[ 182.564853] register_blkdev: major requested (512) is greater than the
maximum (511) for ltp_block_dev
[ 182.564878] register_blkdev: major requested (4294967295) is greater than
the maximum (511) for ltp_block_dev
[ 182.564900] ltp_block_dev: Test Case Result: PASS
[ 182.564917] ltp_block_dev: Test Case 6: register_blkdev() with name=""
[ 182.564918] ltp_block_dev: Test Case Result: PASS
[ 182.564932] ltp_block_dev: Test Case 7: unregister_blkdev() with major=0
[ 182.564941] WARNING: CPU: 3 PID: 1537 at block/genhd.c:428
unregister_blkdev+0x64/0xb0
[ 182.564941] Modules linked in: ltp_block_dev(OE) binfmt_misc dm_multipath
scsi_dh_rdac scsi_dh_emc scsi_dh_alua intel_rapl x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel ppdev crct10dif_pclmul crc32_pclmul
input_leds ipmi_si ghash_clmulni_intel intel_cstate ipmi_devintf
intel_rapl_perf ipmi_msghandler joydev intel_pch_thermal parport_pc parport
mac_hid sch_fq_codel ib_iser rdma_cm iw_cm ib_cm ib_core nfsd iscsi_tcp
libiscsi_tcp libiscsi auth_rpcgss scsi_transport_iscsi nfs_acl lockd grace
sunrpc 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 hid_generic usbhid hid i915 kvmgt
vfio_mdev mdev vfio_iommu_type1 vfio kvm mgag200 ttm aesni_intel irqbypass
drm_kms_helper aes_x86_64 syscopyarea crypto_simd sysfillrect cryptd sysimgblt
fb_sys_fops glue_helper ahci igb drm i2c_i801 dca libahci lpc_ich i2c_algo_bit
video
[ 182.564964] CPU: 3 PID: 1537 Comm: block_dev Tainted: G OE
5.0.0-16-generic #17-Ubuntu
[ 182.564964] Hardware name: Intel Corporation S1200RP/S1200RP, BIOS
S1200RP.86B.03.02.0003.070120151022 07/01/2015
[ 182.564966] RIP: 0010:unregister_blkdev+0x64/0xb0
[ 182.564967] Code: 00 48 63 c3 48 8b 04 c5 80 c3 90 ab 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 e0 9b 34 ab e8 ac 80 57 00 48 89 df e8 c4 c1
[ 182.564967] RSP: 0018:ffffb024027abdc0 EFLAGS: 00010246
[ 182.564968] RAX: 0000000000000000 RBX: 0000000000000000 RCX:
0000000000000000
[ 182.564969] RDX: ffff90ab94048000 RSI: ffffffffc0a46826 RDI:
ffffffffab349be0
[ 182.564969] RBP: ffffb024027abdd8 R08: ffff90aba0ee7080 R09:
ffff90aba0807900
[ 182.564970] R10: 0000000000000004 R11: 0000000000000000 R12:
0000000000000000
[ 182.564970] R13: ffffffffc0a46826 R14: ffffb024027abee8 R15:
fffffffffffffff2
[ 182.564971] FS: 00007fe54556a5c0(0000) GS:ffff90aba0ec0000(0000)
knlGS:0000000000000000
[ 182.564971] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 182.564972] CR2: 00005614de2c3fc0 CR3: 00000004540cc002 CR4:
00000000003606e0
[ 182.564973] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 182.564973] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 182.564973] Call Trace:
[ 182.564977] sys_tcase.cold.0+0x1e8/0x77b [ltp_block_dev]
[ 182.564980] dev_attr_store+0x1b/0x30
[ 182.564982] sysfs_kf_write+0x3b/0x40
[ 182.564983] kernfs_fop_write+0x12e/0x1b0
[ 182.564984] __vfs_write+0x1b/0x40
[ 182.564984] vfs_write+0xab/0x1b0
[ 182.564985] ksys_write+0x55/0xc0
[ 182.564986] __x64_sys_write+0x1a/0x20
[ 182.564988] do_syscall_64+0x5a/0x110
[ 182.564990] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 182.564991] RIP: 0033:0x7fe54548b024
[ 182.564991] 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 b9 d3 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
[ 182.564992] RSP: 002b:00007ffed2dd2558 EFLAGS: 00000246 ORIG_RAX:
0000000000000001
[ 182.564993] RAX: ffffffffffffffda RBX: 0000000000000001 RCX:
00007fe54548b024
[ 182.564993] RDX: 0000000000000001 RSI: 00005614defe88c0 RDI:
0000000000000003
[ 182.564994] RBP: 00005614defe88c0 R08: 00007fe54556a5c0 R09:
0000000000000063
[ 182.564994] R10: 00005614de2b78ce R11: 0000000000000246 R12:
00005614defe8280
[ 182.564994] R13: 0000000000000001 R14: 00007fe545564560 R15:
00007fe545563960
[ 182.564996] ---[ end trace 8e352c62d61d6092 ]---
[ 182.564996] ltp_block_dev: Test Case Result: PASS
[ 182.565486] ltp_block_dev: device released
ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: linux-image-5.0.0-16-generic 5.0.0-16.17
ProcVersionSignature: User Name 5.0.0-16.17-generic 5.0.8
Uname: Linux 5.0.0-16-generic x86_64
AlsaDevices:
total 0
crw-rw---- 1 root audio 116, 1 Jun 4 11:27 seq
crw-rw---- 1 root audio 116, 33 Jun 4 11:27 timer
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.10-0ubuntu27
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:
Date: Tue Jun 4 11:30:40 2019
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
MachineType: Intel Corporation S1200RP
PciMultimedia:
ProcFB: 0 mgadrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-16-generic
root=UUID=b0d2ae4e-12dd-423e-acea-272ee8b2a893 ro
RelatedPackageVersions:
linux-restricted-modules-5.0.0-16-generic N/A
linux-backports-modules-5.0.0-16-generic N/A
linux-firmware 1.178.1
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/01/2015
dmi.bios.vendor: Intel Corp.
dmi.bios.version: S1200RP.86B.03.02.0003.070120151022
dmi.board.asset.tag: ....................
dmi.board.name: S1200RP
dmi.board.vendor: Intel Corporation
dmi.board.version: G62254-407
dmi.chassis.asset.tag: ....................
dmi.chassis.type: 17
dmi.chassis.vendor: ..............................
dmi.chassis.version: ..................
dmi.modalias:
dmi:bvnIntelCorp.:bvrS1200RP.86B.03.02.0003.070120151022:bd07/01/2015:svnIntelCorporation:pnS1200RP:pvr....................:rvnIntelCorporation:rnS1200RP:rvrG62254-407:cvn..............................:ct17:cvr..................:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: S1200RP
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: ....................
dmi.sys.vendor: Intel Corporation
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