Comment 18 for bug 1780628

[ 7609.135055] ------------[ cut here ]------------
[ 7609.135057] kernel BUG at /home/kernel/COD/linux/drivers/md/raid5.c:1762!
[ 7609.135065] invalid opcode: 0000 [#1] SMP PTI
[ 7609.135069] CPU: 2 PID: 302 Comm: md0_raid5 Not tainted 4.18.0-041800rc5-generic #201807152130
[ 7609.135071] Hardware name: Gigabyte Technology Co., Ltd. H370M-D3H/H370M D3H-CF, BIOS F3 03/01/2018
[ 7609.135078] RIP: 0010:raid_run_ops+0xbcb/0x15e0 [raid456]
[ 7609.135079] Code: 63 d2 48 8d 04 d0 48 89 45 c8 0f 84 8b 09 00 00 48 8b 7d 98 44 89 f1 31 d2 4c 89 e6 e8 8e 98 e6 ff 48 89 45 98 e9 07 f6 ff ff <0f> 0b 0f 0b e9 85 fb ff ff 8b 4d 90 89 fe e9 12 fd ff ff 4c 8b ad
[ 7609.135106] RSP: 0018:ffffa6c30135fb30 EFLAGS: 00010006
[ 7609.135108] RAX: 0000000000000000 RBX: ffff90c11b363405 RCX: 0000000000000000
[ 7609.135110] RDX: ffff90c0edc2d7c0 RSI: ffff90bf36edaec0 RDI: ffff90c0edc2d828
[ 7609.135113] RBP: ffffa6c30135fbe8 R08: 0000000000001000 R09: ffffa6c30135fac0
[ 7609.135115] R10: 0000000000001000 R11: ffff90c0edc2d848 R12: ffff90c0edc2da08
[ 7609.135117] R13: ffff90c0edc2d828 R14: ffff90c0edc2d7c0 R15: ffff90c158240800
[ 7609.135119] FS: 0000000000000000(0000) GS:ffff90c16e480000(0000) knlGS:0000000000000000
[ 7609.135122] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7609.135124] CR2: 00005644e9cf7230 CR3: 000000003a80a002 CR4: 00000000003606e0
[ 7609.135126] Call Trace:
[ 7609.135132] handle_stripe+0x66c/0x21d0 [raid456]
[ 7609.135137] handle_active_stripes.isra.62+0x3d8/0x5c0 [raid456]
[ 7609.135141] raid5d+0x407/0x5f0 [raid456]
[ 7609.135147] md_thread+0x129/0x170
[ 7609.135150] ? handle_active_stripes.isra.62+0x5c0/0x5c0 [raid456]
[ 7609.135153] ? md_thread+0x129/0x170
[ 7609.135157] ? wait_woken+0x80/0x80
[ 7609.135160] kthread+0x121/0x140
[ 7609.135163] ? md_rdev_init+0xb0/0xb0
[ 7609.135165] ? kthread_create_worker_on_cpu+0x70/0x70
[ 7609.135169] ret_from_fork+0x35/0x40
[ 7609.135171] Modules linked in: xfs nls_iso8859_1 intel_rapl snd_hda_codec_hdmi x86_pkg_temp_thermal snd_hda_codec_realtek intel_powerclamp coretemp snd_hda_codec_generic kvm_intel kvm ppdev snd_hda_intel snd_hda_codec snd_hda_core irqbypass snd_hwdep snd_pcm intel_cstate mei_me mei wmi_bmof parport_pc snd_timer snd intel_rapl_perf soundcore parport input_leds intel_pch_thermal acpi_pad 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 raid1 raid0 multipath linear raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c hid_generic usbhid hid morus1280_avx2 morus1280_sse2 morus1280_glue morus640_sse2 morus640_glue aegis256_aesni aegis128l_aesni aegis128_aesni
[ 7609.135212] crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc i915 i2c_algo_bit drm_kms_helper aesni_intel syscopyarea sysfillrect sysimgblt aes_x86_64 fb_sys_fops crypto_simd drm cryptd glue_helper ahci libahci e1000e wmi video pinctrl_cannonlake pinctrl_intel
[ 7609.135229] ---[ end trace 0de6b567897a8298 ]---
[ 7609.135233] RIP: 0010:raid_run_ops+0xbcb/0x15e0 [raid456]
[ 7609.135234] Code: 63 d2 48 8d 04 d0 48 89 45 c8 0f 84 8b 09 00 00 48 8b 7d 98 44 89 f1 31 d2 4c 89 e6 e8 8e 98 e6 ff 48 89 45 98 e9 07 f6 ff ff <0f> 0b 0f 0b e9 85 fb ff ff 8b 4d 90 89 fe e9 12 fd ff ff 4c 8b ad
[ 7609.135261] RSP: 0018:ffffa6c30135fb30 EFLAGS: 00010006
[ 7609.135263] RAX: 0000000000000000 RBX: ffff90c11b363405 RCX: 0000000000000000
[ 7609.135265] RDX: ffff90c0edc2d7c0 RSI: ffff90bf36edaec0 RDI: ffff90c0edc2d828
[ 7609.135267] RBP: ffffa6c30135fbe8 R08: 0000000000001000 R09: ffffa6c30135fac0
[ 7609.135270] R10: 0000000000001000 R11: ffff90c0edc2d848 R12: ffff90c0edc2da08
[ 7609.135272] R13: ffff90c0edc2d828 R14: ffff90c0edc2d7c0 R15: ffff90c158240800
[ 7609.135274] FS: 0000000000000000(0000) GS:ffff90c16e480000(0000) knlGS:0000000000000000
[ 7609.135277] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 7609.135279] CR2: 00005644e9cf7230 CR3: 000000003a80a002 CR4: 00000000003606e0

From running the 4.18rc5 kernel, seems roughly as hard to trigger as 4.17.0 does.