Description of problem: I removed the laptop from the docking station and it froze. Version-Release number of selected component (if applicable): kernel-4.9.3-200.fc25.x86_64 How reproducible: Occasionally Steps to Reproduce: 1. Undock Actual results: Unresponsive system. Expected results: Continued normal operation. Additional info: Feb 06 08:59:11 orpheus kernel: thinkpad_acpi: undocked from hotplug port replicator Feb 06 08:59:11 orpheus kernel: usb 1-3.4: USB disconnect, device number 6 Feb 06 08:59:11 orpheus kernel: usb 1-3.4.1: USB disconnect, device number 22 Feb 06 08:59:11 orpheus kernel: usb 1-3.4.1.2: USB disconnect, device number 23 Feb 06 08:59:12 orpheus /usr/libexec/gdm-x-session[2027]: (II) config/udev: removing device Logitech G400s Opti Feb 06 08:59:12 orpheus /usr/libexec/gdm-x-session[2027]: (**) Option "fd" "101" Feb 06 08:59:12 orpheus /usr/libexec/gdm-x-session[2027]: (II) UnloadModule: "libinput" Feb 06 08:59:12 orpheus /usr/libexec/gdm-x-session[2027]: (II) systemd-logind: releasing fd for 13:75 Feb 06 08:59:12 orpheus kernel: BUG: unable to handle kernel paging request at fffffffffffffffe Feb 06 08:59:12 orpheus kernel: IP: [<ffffffff8f5458a7>] device_del+0x17/0x270 Feb 06 08:59:12 orpheus kernel: PGD 15fe0a067 Feb 06 08:59:12 orpheus kernel: PUD 15fe0c067 Feb 06 08:59:12 orpheus kernel: PMD 0 Feb 06 08:59:12 orpheus kernel: Feb 06 08:59:12 orpheus kernel: Oops: 0000 [#1] SMP Feb 06 08:59:12 orpheus kernel: Modules linked in: snd_seq_dummy rfcomm fuse ccm xt_CHECKSUM ipt_MASQUERADE nf_ Feb 06 08:59:12 orpheus kernel: snd_hda_codec intel_rapl_perf iwlwifi snd_hda_core snd_hwdep snd_seq cfg80211 Feb 06 08:59:12 orpheus kernel: CPU: 6 PID: 25719 Comm: kworker/6:0 Tainted: G W 4.9.3-200.fc25.x8 Feb 06 08:59:12 orpheus kernel: Hardware name: LENOVO 20FXS0BB0U/20FXS0BB0U, BIOS R07ET69W (2.09 ) 07/28/2016 Feb 06 08:59:12 orpheus kernel: Workqueue: events drm_dp_destroy_connector_work [drm_kms_helper] Feb 06 08:59:12 orpheus kernel: task: ffff96991b325d00 task.stack: ffffb8f4e7460000 Feb 06 08:59:12 orpheus kernel: RIP: 0010:[<ffffffff8f5458a7>] [<ffffffff8f5458a7>] device_del+0x17/0x270 Feb 06 08:59:12 orpheus kernel: RSP: 0018:ffffb8f4e7463d10 EFLAGS: 00010282 Feb 06 08:59:12 orpheus kernel: RAX: 0000000000000000 RBX: fffffffffffffffe RCX: ffff9699aed98af8 Feb 06 08:59:12 orpheus kernel: RDX: ffffffffc03d9aa6 RSI: 0000000000000001 RDI: fffffffffffffffe Feb 06 08:59:12 orpheus kernel: RBP: ffffb8f4e7463d48 R08: ffff9699aed86010 R09: 0000000000000000 Feb 06 08:59:12 orpheus kernel: R10: ffff969902f1dd80 R11: 00000000ce248c14 R12: fffffffffffffffe Feb 06 08:59:12 orpheus kernel: R13: ffff9699aad7ba80 R14: ffff9699aed86010 R15: ffff9699aad7b688 Feb 06 08:59:12 orpheus kernel: FS: 0000000000000000(0000) GS:ffff9699c1580000(0000) knlGS:0000000000000000 Feb 06 08:59:12 orpheus kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Feb 06 08:59:12 orpheus kernel: CR2: fffffffffffffffe CR3: 0000000403543000 CR4: 00000000003406e0 Feb 06 08:59:12 orpheus kernel: DR0: 00007fffefc45503 DR1: 00007fffffffdb58 DR2: 0000000000000000 Feb 06 08:59:12 orpheus kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Feb 06 08:59:12 orpheus kernel: Stack: Feb 06 08:59:12 orpheus kernel: ffff9699aae9d000 0000000102f1dd80 00000000e184058b fffffffffffffffe Feb 06 08:59:12 orpheus kernel: ffff9699a8d60000 ffff9699aad7ba80 ffff9699aed86010 ffffb8f4e7463d60 Feb 06 08:59:12 orpheus kernel: ffffffff8f545b1a ffff9699aed82800 ffffb8f4e7463d78 ffffffffc03b0dd9 Feb 06 08:59:12 orpheus kernel: Call Trace: Feb 06 08:59:12 orpheus kernel: [<ffffffff8f545b1a>] device_unregister+0x1a/0x60 Feb 06 08:59:12 orpheus kernel: [<ffffffffc03b0dd9>] drm_sysfs_connector_remove+0x39/0x50 [drm] Feb 06 08:59:12 orpheus kernel: [<ffffffffc03c2b77>] drm_connector_unregister.part.6+0x27/0x40 [drm] Feb 06 08:59:12 orpheus kernel: [<ffffffffc03c2ba4>] drm_connector_unregister+0x14/0x20 [drm] Feb 06 08:59:12 orpheus kernel: [<ffffffffc05c389a>] intel_dp_destroy_mst_connector+0x1a/0x80 [i915] Feb 06 08:59:12 orpheus kernel: [<ffffffffc04b5614>] drm_dp_destroy_connector_work+0x94/0x140 [drm_kms_helper] Feb 06 08:59:12 orpheus kernel: [<ffffffff8f0bc4e4>] process_one_work+0x184/0x430 Feb 06 08:59:12 orpheus kernel: [<ffffffff8f0bc7de>] worker_thread+0x4e/0x490 Feb 06 08:59:12 orpheus kernel: [<ffffffff8f0bc790>] ? process_one_work+0x430/0x430 Feb 06 08:59:12 orpheus kernel: [<ffffffff8f0bc790>] ? process_one_work+0x430/0x430 Feb 06 08:59:12 orpheus kernel: [<ffffffff8f0c2569>] kthread+0xd9/0xf0 Feb 06 08:59:12 orpheus kernel: [<ffffffff8f0c2490>] ? kthread_park+0x60/0x60 Feb 06 08:59:12 orpheus kernel: [<ffffffff8f81be55>] ret_from_fork+0x25/0x30 Feb 06 08:59:12 orpheus kernel: Code: 34 2d 00 5b 5d c3 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 0 Feb 06 08:59:12 orpheus kernel: RIP [<ffffffff8f5458a7>] device_del+0x17/0x270 Feb 06 08:59:12 orpheus kernel: RSP <ffffb8f4e7463d10> Feb 06 08:59:12 orpheus kernel: CR2: fffffffffffffffe Feb 06 08:59:12 orpheus kernel: ---[ end trace 71d86a9d790bcb67 ]---
Let's have the graphic team take a look. Can you also test on one of the newer kernels? Fixes may have come in since 4.9.3
Here I have Fedora 26, 4.12.8-300.fc26.x86_64, Lenovo T460p (20FW000DPG) and a ThinkPad Ultra Dock. Docking and undocking works without any issues, no kernel oops observed so far.
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