https://bugzilla.kernel.org/show_bug.cgi?id=204575 Bug ID: 204575 Summary: Connect a thunderbolt/usb-c dock hang the laptop after resume Product: Drivers Version: 2.5 Kernel Version: 5.0.0-23-generic Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx Reporter: zioalex@xxxxxxxxx Regression: No Created attachment 284381 --> https://bugzilla.kernel.org/attachment.cgi?id=284381&action=edit Kernel trace I am experiencing a problem when I connect a Cable matters USB-C/Thunderbolt dock to my resumed laptop. I see in the logs the follow trace: Aug 14 09:29:05 asurace-signavio kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000318 Aug 14 09:29:05 asurace-signavio kernel: #PF error: [WRITE] Aug 14 09:29:05 asurace-signavio kernel: PGD 0 P4D 0 Aug 14 09:29:05 asurace-signavio kernel: Oops: 0002 [#1] SMP NOPTI Aug 14 09:29:05 asurace-signavio kernel: CPU: 4 PID: 21365 Comm: kworker/4:2 Tainted: G O 5.0.0-23-generic #24~18.04.1-Ubuntu Aug 14 09:29:05 asurace-signavio kernel: Hardware name: LENOVO 20N2S0M700/20N2S0M700, BIOS N2IET71W (1.49 ) 07/03/2019 Aug 14 09:29:05 asurace-signavio kernel: Workqueue: events_long drm_dp_mst_link_probe_work [drm_kms_helper] Aug 14 09:29:05 asurace-signavio kernel: RIP: 0010:mutex_lock+0x1d/0x40 Aug 14 09:29:05 asurace-signavio kernel: Code: 5d c3 90 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 89 e5 53 48 89 fb e8 ce e6 ff ff 65 48 8b 14 25 00 5c 01 00 31 c0 <f0> 48 0f b1 13 75 03 5b 5d c3 48 89 df e8 b1 ff ff ff 5b 5d c3 0f Aug 14 09:29:05 asurace-signavio kernel: RSP: 0018:ffffbc3848adfbf0 EFLAGS: 00010246 Aug 14 09:29:05 asurace-signavio kernel: RAX: 0000000000000000 RBX: 0000000000000318 RCX: ffffbc3844097898 Aug 14 09:29:05 asurace-signavio kernel: RDX: ffff955424f9de00 RSI: 0000000000000216 RDI: 0000000000000318 Aug 14 09:29:05 asurace-signavio kernel: RBP: ffffbc3848adfbf8 R08: ffff9554be51ab70 R09: 0000000000000000 Aug 14 09:29:05 asurace-signavio kernel: R10: 0000000000000000 R11: 0000000000000008 R12: 00000000000003db Aug 14 09:29:05 asurace-signavio kernel: R13: ffff9554ae4e57b8 R14: ffff9554b9222060 R15: 00000000000003db Aug 14 09:29:05 asurace-signavio kernel: FS: 0000000000000000(0000) GS:ffff9554be500000(0000) knlGS:0000000000000000 Aug 14 09:29:05 asurace-signavio kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Aug 14 09:29:05 asurace-signavio kernel: CR2: 0000000000000318 CR3: 0000000405c0e004 CR4: 00000000003626e0 Aug 14 09:29:05 asurace-signavio kernel: Call Trace: Aug 14 09:29:05 asurace-signavio kernel: drm_dp_mst_wait_tx_reply+0x155/0x1f0 [drm_kms_helper] Full log in attachment. The dock is the follow: Aug 05 10:50:55 asurace-signavio kernel: usb 1-5.2: Manufacturer: Cable Matters Inc Aug 05 10:50:55 asurace-signavio kernel: usb 1-5.2: SerialNumber: 11AD1D09E0304812191F0B00 Aug 05 10:50:55 asurace-signavio kernel: usb 1-5.3: new low-speed USB device number 8 using xhci_hcd Aug 05 10:50:55 asurace-signavio kernel: usb 1-5.3: New USB device found, idVendor=046d, idProduct=c31c, bcdDevice=64.00 https://kb.cablematters.com/index.php?View=entry&EntryID=84 -- You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
