Created attachment 1451793 [details]
File: dmesg

Description of problem:
I undocked my Lenovo P50.

Version-Release number of selected component:
kernel-core-4.17.2-200.fc28

Additional info:
reporter:       libreport-2.9.5
cmdline:        BOOT_IMAGE=/vmlinuz-4.17.2-200.fc28.x86_64 root=/dev/mapper/fedora-root ro resume=/dev/mapper/fedora-swap rd.lvm.lv=fedora/root rd.luks.uuid=luks-9a225b5c-3335-456d-b6e7-5e2aec8087fe rd.lvm.lv=fedora/swap rhgb quiet LANG=en_US.UTF-8
crash_function: _cond_resched
kernel:         4.17.2-200.fc28.x86_64
runlevel:       N 5
type:           Kerneloops

Truncated backtrace:
WARNING: CPU: 0 PID: 2952 at drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h:170 nouveau_dp_detect+0x202/0x370 [nouveau]
Modules linked in: uas usb_storage vfat fat fuse rfcomm ccm thunderbolt xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun devlink nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep sunrpc arc4 iwlmvm intel_rapl x86_pkg_temp_thermal intel_powerclamp mei_wdt iTCO_wdt coretemp iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic kvm_intel mac80211 kvm uvcvideo snd_hda_intel
 videobuf2_vmalloc snd_hda_codec btusb videobuf2_memops videobuf2_v4l2 btrtl btbcm btintel irqbypass intel_cstate videobuf2_common snd_hda_core iwlwifi intel_uncore snd_hwdep bluetooth snd_seq intel_rapl_perf videodev snd_seq_device snd_pcm rtsx_pci_ms cfg80211 intel_wmi_thunderbolt wmi_bmof media thinkpad_acpi joydev memstick snd_timer i2c_i801 ecdh_generic snd mei_me soundcore mei intel_pch_thermal rfkill shpchp dm_crypt mmc_block nouveau i915 mxm_wmi ttm rtsx_pci_sdmmc mmc_core i2c_algo_bit crct10dif_pclmul drm_kms_helper crc32_pclmul crc32c_intel nvme drm e1000e ghash_clmulni_intel nvme_core serio_raw rtsx_pci wmi video
CPU: 0 PID: 2952 Comm: kworker/0:3 Not tainted 4.17.2-200.fc28.x86_64 #1
Hardware name: LENOVO 20EQS64N0B/20EQS64N0B, BIOS N1EET71W (1.44 ) 08/31/2017
Workqueue: events nouveau_display_hpd_work [nouveau]
RIP: 0010:nouveau_dp_detect+0x202/0x370 [nouveau]
RSP: 0018:ffffaa4bc318fcf0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff9858f55dec00 RCX: 0000000000000000
RDX: ffffaa4bc500e4e4 RSI: ffffaa4bc500e4e4 RDI: 0000000001009002
RBP: ffff9858f387f800 R08: ffffaa4bc318fcfd R09: ffffaa4bc318fcfc
R10: 0000000000000000 R11: 0000000000000000 R12: ffff9858fb44c000
R13: ffff9858fb44c000 R14: 00000000ffffffed R15: ffff9858f55dec18
FS:  0000000000000000(0000) GS:ffff98591f400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fec3c84a000 CR3: 000000071320a004 CR4: 00000000003606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ? _cond_resched+0x15/0x30
 nouveau_connector_detect+0x2ff/0x510 [nouveau]
 ? _cond_resched+0x15/0x30
 ? ww_mutex_lock+0x12/0x40
 drm_helper_probe_detect_ctx+0x8b/0xe0 [drm_kms_helper]
 drm_helper_hpd_irq_event+0xa8/0x120 [drm_kms_helper]
 nouveau_display_hpd_work+0x2a/0x70 [nouveau]
 process_one_work+0x187/0x340
 worker_thread+0x2e/0x380
 ? pwq_unbound_release_workfn+0xd0/0xd0
 kthread+0x112/0x130
 ? kthread_create_worker_on_cpu+0x70/0x70
 ret_from_fork+0x35/0x40
Code: 4c 8d 44 24 0d b9 00 04 00 00 48 89 ef ba 09 00 00 00 be 01 00 00 00 e8 8d 0c f8 ff 85 c0 0f 85 3b 01 00 00 80 7c 24 0c 03 74 02 <0f> 0b 48 89 ef e8 64 0a f8 ff f6 05 fd 4d c6 ff 02 0f 84 24 ff

This message is a reminder that Fedora 28 is nearing its end of life.
On 2019-May-28 Fedora will stop maintaining and issuing updates for
Fedora 28. It is Fedora's policy to close all bug reports from releases
that are no longer maintained. At that time this bug will be closed as
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Fedora 28 changed to end-of-life (EOL) status on 2019-05-28. Fedora 28 is
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