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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1780628
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
** Tags added: bionic
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https://bugs.launchpad.net/bugs/1780628
Title:
linux-4.15.0-23-generic RAID 5 kernel BUG
Status in linux package in Ubuntu:
Incomplete
Bug description:
I have a machine running linux-4.15.0-23-generic, and I can reliably
trigger a kernel BUG under heavy write I/O using RAID 5.
$ cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid1]
[raid10]
md0 : active raid5 sdd2[1] sda2[0] sdb2[2] sdc2[3]
23440220160 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/4]
[UUUU]
bitmap: 0/59 pages [0KB], 65536KB chunk
unused devices: <none>
[35679.932015] ------------[ cut here ]------------
[35679.932017] kernel BUG at
/build/linux-uT8zSN/linux-4.15.0/drivers/md/raid5.c:1757!
[35679.932044] invalid opcode: 0000 [#1] SMP PTI
[35679.932054] Modules linked in: xfs nls_iso8859_1 ppdev intel_rapl
x86_pkg_temp_thermal intel_powerclamp coretemp snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic kvm_intel snd_hda_intel kvm
snd_hda_codec snd_hda_core snd_hwdep snd_pcm irqbypass intel_cstate
intel_rapl_perf snd_timer acpi_pad mei_me mei input_leds mac_hid snd shpchp
wmi_bmof intel_pch_thermal soundcore parport_pc parport 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
raid1 raid0 multipath linear raid456 async_raid6_recov async_memcpy async_pq
async_xor async_tx xor raid6_pq libcrc32c hid_generic usbhid hid
crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i915 aesni_intel
aes_x86_64 crypto_simd glue_helper
[35679.932199] cryptd i2c_algo_bit drm_kms_helper e1000e syscopyarea
sysfillrect sysimgblt fb_sys_fops ptp ahci pps_core drm libahci wmi video
[35679.932229] CPU: 2 PID: 272 Comm: md0_raid5 Not tainted 4.15.0-23-generic
#25-Ubuntu
[35679.932245] Hardware name: Gigabyte Technology Co., Ltd. H370M-D3H/H370M
D3H-CF, BIOS F3 03/01/2018
[35679.932266] RIP: 0010:raid_run_ops+0xbcc/0x15f0 [raid456]
[35679.932277] RSP: 0018:ffffa95d0133fb30 EFLAGS: 00010006
[35679.932289] RAX: 0000000000000000 RBX: ffff96231cf67a34 RCX:
0000000000000000
[35679.932304] RDX: ffff96231d2cd7c0 RSI: ffff962303321380 RDI:
ffff96231d2cd828
[35679.932318] RBP: ffffa95d0133fbe8 R08: 0000000000001000 R09:
ffffa95d0133fac0
[35679.932333] R10: 0000000000001000 R11: ffff96231d2cd848 R12:
ffff96231d2cda08
[35679.932347] R13: ffff96231d2cd828 R14: ffff96231d2cd7c0 R15:
ffff962319bc8000
[35679.932362] FS: 0000000000000000(0000) GS:ffff96232e480000(0000)
knlGS:0000000000000000
[35679.932379] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[35679.932391] CR2: 0000564929900bb8 CR3: 0000000041a0a003 CR4:
00000000003606e0
[35679.932405] Call Trace:
[35679.932415] handle_stripe+0x669/0x21c0 [raid456]
[35679.932428] handle_active_stripes.isra.62+0x3da/0x5a0 [raid456]
[35679.932442] raid5d+0x407/0x5f0 [raid456]
[35679.932454] md_thread+0x129/0x170
[35679.932463] ? handle_active_stripes.isra.62+0x5a0/0x5a0 [raid456]
[35679.932477] ? md_thread+0x129/0x170
[35679.932487] ? wait_woken+0x80/0x80
[35679.932497] kthread+0x121/0x140
[35679.932505] ? find_pers+0x70/0x70
[35679.932515] ? kthread_create_worker_on_cpu+0x70/0x70
[35679.932527] ret_from_fork+0x35/0x40
[35679.932536] Code: 48 63 d2 48 8d 04 d0 48 89 45 c8 0f 84 9a 09 00 00 48 8b
7d 98 44 89 f1 31 d2 4c 89 e6 e8 9d a9 e7 ff 48 89 45 98 e9 06 f6 ff ff <0f> 0b
0f 0b e9 89 f9 ff ff 8b 4d 90 89 fe e9 7e fd ff ff 4c 8b
[35679.932588] RIP: raid_run_ops+0xbcc/0x15f0 [raid456] RSP: ffffa95d0133fb30
[35679.932603] ---[ end trace 22e551ef3119d0b0 ]---
$ cat /proc/version_signature
Ubuntu 4.15.0-23.25-generic 4.15.18
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