[66947.879408] general protection fault: 0000 [#1] PREEMPT SMP PTI
[66947.879422] Modules linked in: cfg80211 rfkill 8021q mrp nouveau mxm_wmi i2c_algo_bit ttm drm_kms_helper drm agpgart tg3 input_leds hid_generic snd_hda_codec_analog syscopyarea sysfillrect sysimgblt fb_sys_fops ptp usbhid led_class intel_powerclamp snd_hda_co
dec_generic pps_core libphy coretemp hid dell_wmi_descriptor sr_mod cdrom kvm_intel iTCO_wdt ppdev iTCO_vendor_support dcdbas sparse_keymap gpio_ich dell_smm_hwmon kvm wmi_bmof snd_hda_intel shpchp parport_pc snd_hda_codec snd_hda_core snd_hwdep wmi snd_pcm snd_
timer irqbypass parport intel_cstate intel_uncore snd soundcore lpc_ich rtc_cmos evdev i7core_edac mac_hid i2c_i801 acpi_cpufreq ip_tables x_tables ext4 crc32c_generic crc16 mbcache jbd2 fscrypto uas usb_storage sd_mod uhci_hcd ahci libahci crc32c_intel libata e
hci_pci ehci_hcd scsi_mod
[66947.879529]  usbcore usb_common
[66947.879536] CPU: 6 PID: 20609 Comm: kworker/u64:2 Tainted: G          I      4.16.8-1-ARCH #1
[66947.879543] Hardware name: Dell Inc. Precision WorkStation T5500  /0D883F, BIOS A03 09/09/2009
[66947.879553] Workqueue: writeback wb_workfn (flush-8:0)
[66947.879562] RIP: 0010:kmem_cache_alloc+0x74/0x1b0
[66947.879568] RSP: 0018:ffffb21d01ab37c8 EFLAGS: 00010286
[66947.879573] RAX: f8038d94fa55c5aa RBX: f8038d94fa55c5aa RCX: 0000000000040206
[66947.879579] RDX: 0000000000040006 RSI: 0000000000040006 RDI: 00000000000292e0
[66947.879585] RBP: f8038d94fa55c5aa R08: ffff977812646500 R09: ffff977812646500
[66947.879591] R10: ffffffffbb31baeb R11: 0000000000000000 R12: 0000000001011200
[66947.879597] R13: ffff97781402c780 R14: ffff97781402c780 R15: ffffffffbb1a5365
[66947.879604] FS:  0000000000000000(0000) GS:ffff977816d80000(0000) knlGS:0000000000000000
[66947.879610] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[66947.879616] CR2: 00007f1e6a1ccec4 CR3: 00000001f800a000 CR4: 00000000000006e0
[66947.879622] Call Trace:
[66947.879631]  ? wait_woken+0x80/0x80
[66947.879637]  mempool_alloc+0x65/0x190
[66947.879642]  ? wait_woken+0x80/0x80
[66947.879647]  ? mempool_alloc+0x65/0x190
[66947.879654]  ? generic_make_request+0xdc/0x2e0
[66947.879661]  bvec_alloc+0x82/0xe0
[66947.879667]  bio_alloc_bioset+0x132/0x1e0
[66947.879692]  ext4_bio_write_page+0x31d/0x520 [ext4]
[66947.879709]  ? mpage_submit_page+0x53/0x70 [ext4]
[66947.879723]  ? mpage_process_page_bufs+0xe6/0xf0 [ext4]
[66947.879737]  ? mpage_prepare_extent_to_map+0x1d6/0x2a0 [ext4]
[66947.879754]  ? ext4_writepages+0x542/0x1000 [ext4]
[66947.879760]  ? kmem_cache_alloc+0xd7/0x1b0
[66947.879783]  ? blk_rq_map_sg+0x253/0x560
[66947.879791]  ? do_writepages+0x41/0xd0
[66947.879805]  ? ext4_mark_inode_dirty+0x1d0/0x1d0 [ext4]
[66947.879811]  ? do_writepages+0x41/0xd0
[66947.879817]  ? swiotlb_map_sg_attrs+0x48/0x130
[66947.879824]  ? ahci_qc_prep+0x13c/0x150 [libahci]
[66947.879830]  ? percpu_counter_add_batch+0x84/0xb0
[66947.879836]  ? __writeback_single_inode+0x3d/0x3d0
[66947.879842]  ? writeback_sb_inodes+0x1ec/0x460
[66947.879849]  ? __writeback_inodes_wb+0x5d/0xb0
[66947.879855]  ? wb_writeback+0x28f/0x340
[66947.879862]  ? get_nr_inodes+0x35/0x50
[66947.879868]  ? cpumask_next+0x16/0x20
[66947.879874]  ? wb_workfn+0x36b/0x440
[66947.879881]  ? process_one_work+0x1d1/0x3b0
[66947.879887]  ? worker_thread+0x2b/0x3d0
[66947.879893]  ? process_one_work+0x3b0/0x3b0
[66947.879899]  ? kthread+0x112/0x130
[66947.879904]  ? kthread_create_on_node+0x60/0x60
[66947.879910]  ? ret_from_fork+0x35/0x40
[66947.879916] Code: 83 78 10 00 48 8b 28 0f 84 0c 01 00 00 48 85 ed 0f 84 03 01 00 00 49 63 5d 20 49 8b 7d 00 48 8d 8a 00 02 00 00 48 89 e8 48 01 eb <48> 33 1b 49 33 9d 40 01 00 00 65 48 0f c7 0f 0f 94 c0 84 c0 74
[66947.879955] RIP: kmem_cache_alloc+0x74/0x1b0 RSP: ffffb21d01ab37c8
[66947.879961] ---[ end trace e6cb64c8c8e216bf ]---
[66947.879971] WARNING: CPU: 6 PID: 20609 at kernel/exit.c:771 do_exit+0x4f/0xac0
[66947.879977] Modules linked in: cfg80211 rfkill 8021q mrp nouveau mxm_wmi i2c_algo_bit ttm drm_kms_helper drm agpgart tg3 input_leds hid_generic snd_hda_codec_analog syscopyarea sysfillrect sysimgblt fb_sys_fops ptp usbhid led_class intel_powerclamp snd_hda_codec_generic pps_core libphy coretemp hid dell_wmi_descriptor sr_mod cdrom kvm_intel iTCO_wdt ppdev iTCO_vendor_support dcdbas sparse_keymap gpio_ich dell_smm_hwmon kvm wmi_bmof snd_hda_intel shpchp parport_pc snd_hda_codec snd_hda_core snd_hwdep wmi snd_pcm snd_timer irqbypass parport intel_cstate intel_uncore snd soundcore lpc_ich rtc_cmos evdev i7core_edac mac_hid i2c_i801 acpi_cpufreq ip_tables x_tables ext4 crc32c_generic crc16 mbcache jbd2 fscrypto uas usb_storage sd_mod uhci_hcd ahci libahci crc32c_intel libata ehci_pci ehci_hcd scsi_mod
[66947.880045]  usbcore usb_common
[66947.880051] CPU: 6 PID: 20609 Comm: kworker/u64:2 Tainted: G      D   I      4.16.8-1-ARCH #1
[66947.880057] Hardware name: Dell Inc. Precision WorkStation T5500  /0D883F, BIOS A03 09/09/2009
[66947.880520] Workqueue: writeback wb_workfn (flush-8:0)
[66947.881224] RIP: 0010:do_exit+0x4f/0xac0
[66947.881945] RSP: 0018:ffffb21d01ab3ee8 EFLAGS: 00010206
[66947.882663] RAX: ffffb21d01ab3d90 RBX: ffff977814561cc0 RCX: 0000000000000000
[66947.883330] RDX: ffff9778115dc040 RSI: 0000000000000000 RDI: ffffffffbc059e20
[66947.884004] RBP: 000000000000000b R08: 0000000000000000 R09: 000000000000037a
[66947.884641] R10: 0000000000000001 R11: 0000000000000000 R12: ffffb21d01ab3718
[66947.885247] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[66947.885846] FS:  0000000000000000(0000) GS:ffff977816d80000(0000) knlGS:0000000000000000
[66947.886445] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[66947.887034] CR2: 00007f1e6a1ccec4 CR3: 00000001f800a000 CR4: 00000000000006e0
[66947.887608] Call Trace:
[66947.888208]  ? process_one_work+0x3b0/0x3b0
[66947.888787]  ? kthread+0x112/0x130
[66947.889364]  ? rewind_stack_do_exit+0x17/0x20
[66947.889942] Code: 8b 04 25 28 00 00 00 48 89 44 24 30 31 c0 e8 69 52 07 00 48 8b 83 e0 07 00 00 48 85 c0 74 0e 48 8b 10 48 39 d0 0f 84 49 04 00 00 <0f> 0b 65 44 8b 2d 67 62 f9 44 41 81 e5 00 ff 1f 00 44 89 6c 24
[66947.890586] ---[ end trace e6cb64c8c8e216c0 ]---