[Bug 204575] New: Connect a thunderbolt/usb-c dock hang the laptop after resume

[bugzilla-daemon at bugzilla.kernel.org]

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 at kernel-bugs.osdl.org
          Reporter: zioalex at gmail.com
        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

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