This still happens with Linux 5.1-rc6.

```
[Fri Apr 26 16:02:16 2019] [drm] DM_MST: stopping TM on aconnector: 00000000c53c37c4 [id: 59]
[Fri Apr 26 16:02:16 2019] [drm] DM_MST: Disabling connector: 00000000d00286a1 [id: 70] [master: 00000000c53c37c4]
[Fri Apr 26 16:02:16 2019] [drm] DM_MST: Disabling connector: 00000000e78a9cad [id: 75] [master: 00000000c53c37c4]
[Fri Apr 26 16:02:19 2019] usb 1-10: USB disconnect, device number 9
[Mon Apr 29 10:16:33 2019] [drm] DM_MST: starting TM on aconnector: 00000000c53c37c4 [id: 59]
[Mon Apr 29 10:16:33 2019] [drm] DM_MST: added connector: 00000000f322b7c6 [id: 83] [master: 00000000c53c37c4]
[Mon Apr 29 10:16:33 2019] [drm] SADs count is: -2, don't need to read it
[Mon Apr 29 10:16:33 2019] [drm] DM_MST: added connector: 00000000d75129fc [id: 103] [master: 00000000c53c37c4]
[Mon Apr 29 10:16:34 2019] [drm] Failed to updateMST allocation table forpipe idx:0
[Mon Apr 29 10:16:34 2019] [drm] SADs count is: -2, don't need to read it
[Mon Apr 29 10:16:34 2019] [drm] Failed to updateMST allocation table forpipe idx:0
[Mon Apr 29 10:16:34 2019] [drm] Failed to updateMST allocation table forpipe idx:0
[Mon Apr 29 10:16:34 2019] WARNING: CPU: 3 PID: 466 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2354 update_mst_stream_alloc_table+0x144/0x150 [amdgpu]
[Mon Apr 29 10:16:34 2019] Modules linked in: fuse rpcsec_gss_krb5 nfsv4 nfs 8021q garp stp mrp llc input_leds led_class amdgpu snd_hda_codec_realtek snd_hda_codec_generic i915 chash gpu_sched ttm iosf_mbi snd_hda_codec_hdmi drm_kms_helper snd_hda_intel intel_gtt snd_hda_codec drm x86_pkg_temp_thermal fb_sys_fops syscopyarea snd_hda_core kvm_intel snd_pcm kvm snd_timer snd sysfillrect irqbypass wmi_bmof soundcore crc32c_intel sysimgblt video wmi nfsd auth_rpcgss oid_registry nfs_acl lockd grace sunrpc efivarfs ip_tables x_tables unix ipv6 autofs4
[Mon Apr 29 10:16:34 2019] CPU: 3 PID: 466 Comm: Xorg Kdump: loaded Not tainted 5.1.0-rc6.mx64.258 #1
[Mon Apr 29 10:16:34 2019] Hardware name: Dell Inc. Precision 3630 Tower/0NNNCT, BIOS 1.0.4 07/17/2018
[Mon Apr 29 10:16:34 2019] RIP: 0010:update_mst_stream_alloc_table+0x144/0x150 [amdgpu]
[Mon Apr 29 10:16:34 2019] Code: 63 d0 48 83 c2 13 48 c1 e2 04 4d 8b 4c 10 08 4d 8b 54 10 10 4d 89 0c 24 4d 89 54 24 08 39 c1 75 81 e9 67 ff ff ff 31 c0 eb f3 <0f> 0b e9 14 ff ff ff e8 f0 15 88 e0 0f 1f 44 00 00 41 55 41 54 49
[Mon Apr 29 10:16:34 2019] RSP: 0018:ffffc9000252b6b0 EFLAGS: 00010202
[Mon Apr 29 10:16:34 2019] RAX: 0000000000000002 RBX: ffff88846410c5c0 RCX: 0000000000000000
[Mon Apr 29 10:16:34 2019] RDX: ffffc9000252b784 RSI: ffff88844d848a80 RDI: ffffc9000252b710
[Mon Apr 29 10:16:34 2019] RBP: ffffc9000252b750 R08: ffff888460a53c00 R09: ffff888384600000
[Mon Apr 29 10:16:34 2019] R10: ffffc9000252b768 R11: ffffc9000252b6b0 R12: ffff888460a53c00
[Mon Apr 29 10:16:34 2019] R13: ffff88846410c000 R14: 0000000000000002 R15: ffff888454a70000
[Mon Apr 29 10:16:34 2019] FS:  00007f906be66540(0000) GS:ffff88846c0c0000(0000) knlGS:0000000000000000
[Mon Apr 29 10:16:34 2019] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[Mon Apr 29 10:16:34 2019] CR2: 00000000006c7448 CR3: 000000044c81c006 CR4: 00000000003606e0
[Mon Apr 29 10:16:34 2019] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[Mon Apr 29 10:16:34 2019] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[Mon Apr 29 10:16:34 2019] Call Trace:
[Mon Apr 29 10:16:34 2019]  ? mutex_lock+0xe/0x30
[Mon Apr 29 10:16:34 2019]  ? core_link_enable_stream+0x47a/0x1090 [amdgpu]
[Mon Apr 29 10:16:34 2019]  core_link_enable_stream+0x47a/0x1090 [amdgpu]
[Mon Apr 29 10:16:34 2019]  dce110_apply_ctx_to_hw+0x3f1/0x480 [amdgpu]
[Mon Apr 29 10:16:34 2019]  ? dce110_apply_ctx_for_surface+0x250/0x2b0 [amdgpu]
[Mon Apr 29 10:16:34 2019]  dc_commit_state+0x2d6/0x560 [amdgpu]
[Mon Apr 29 10:16:34 2019]  ? drm_calc_timestamping_constants+0xe5/0x150 [drm]
[Mon Apr 29 10:16:34 2019]  amdgpu_dm_atomic_commit_tail+0x388/0x1960 [amdgpu]
[Mon Apr 29 10:16:34 2019]  ? bw_calcs+0x6f8/0x1cd0 [amdgpu]
[Mon Apr 29 10:16:34 2019]  ? dce112_validate_bandwidth+0x3e/0x70 [amdgpu]
[Mon Apr 29 10:16:34 2019]  ? dc_validate_global_state+0x2d4/0x360 [amdgpu]
[Mon Apr 29 10:16:34 2019]  ? amdgpu_bo_pin_restricted+0x68/0x290 [amdgpu]
[Mon Apr 29 10:16:34 2019]  ? _cond_resched+0x15/0x40
[Mon Apr 29 10:16:34 2019]  ? wait_for_common+0x3d/0x180
[Mon Apr 29 10:16:34 2019]  ? _cond_resched+0x15/0x40
[Mon Apr 29 10:16:34 2019]  ? wait_for_common+0x3d/0x180
[Mon Apr 29 10:16:34 2019]  ? dm_plane_helper_prepare_fb+0x117/0x370 [amdgpu]
[Mon Apr 29 10:16:34 2019]  ? commit_tail+0x3d/0x70 [drm_kms_helper]
[Mon Apr 29 10:16:34 2019]  commit_tail+0x3d/0x70 [drm_kms_helper]
[Mon Apr 29 10:16:34 2019]  drm_atomic_helper_commit+0xfc/0x110 [drm_kms_helper]
[Mon Apr 29 10:16:34 2019]  drm_atomic_helper_set_config+0x80/0x90 [drm_kms_helper]
[Mon Apr 29 10:16:34 2019]  drm_mode_setcrtc+0x170/0x6c0 [drm]
[Mon Apr 29 10:16:34 2019]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[Mon Apr 29 10:16:34 2019]  drm_ioctl_kernel+0x88/0xf0 [drm]
[Mon Apr 29 10:16:34 2019]  drm_ioctl+0x2f8/0x3b0 [drm]
[Mon Apr 29 10:16:34 2019]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[Mon Apr 29 10:16:34 2019]  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[Mon Apr 29 10:16:34 2019]  do_vfs_ioctl+0xa4/0x630
[Mon Apr 29 10:16:34 2019]  ? __sys_recvmsg+0x8a/0xa0
[Mon Apr 29 10:16:34 2019]  ksys_ioctl+0x3a/0x70
[Mon Apr 29 10:16:34 2019]  __x64_sys_ioctl+0x16/0x20
[Mon Apr 29 10:16:34 2019]  do_syscall_64+0x48/0x100
[Mon Apr 29 10:16:34 2019]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[Mon Apr 29 10:16:34 2019] RIP: 0033:0x7f90699b4647
[Mon Apr 29 10:16:34 2019] Code: 00 00 00 48 8b 05 41 58 2c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 11 58 2c 00 f7 d8 64 89 01 48
[Mon Apr 29 10:16:34 2019] RSP: 002b:00007ffefc39edf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[Mon Apr 29 10:16:34 2019] RAX: ffffffffffffffda RBX: 00007ffefc39ee30 RCX: 00007f90699b4647
[Mon Apr 29 10:16:34 2019] RDX: 00007ffefc39ee30 RSI: 00000000c06864a2 RDI: 000000000000000b
[Mon Apr 29 10:16:34 2019] RBP: 00007ffefc39ee30 R08: 0000000000000000 R09: 00000000016deaf0
[Mon Apr 29 10:16:34 2019] R10: 00007ffefc39eef0 R11: 0000000000000246 R12: 00000000c06864a2
[Mon Apr 29 10:16:34 2019] R13: 000000000000000b R14: 0000000000000000 R15: 00000000016deaf0
[Mon Apr 29 10:16:34 2019] ---[ end trace f73ac3cc2c839e40 ]---
[Mon Apr 29 10:17:17 2019] usb 1-10: new high-speed USB device number 10 using xhci_hcd
[Mon Apr 29 10:17:17 2019] usb-storage 1-10:1.0: USB Mass Storage device detected
[Mon Apr 29 10:17:17 2019] scsi host5: usb-storage 1-10:1.0
[Mon Apr 29 10:17:18 2019] scsi 5:0:0:0: Direct-Access     Linux    File-CD Gadget   0000 PQ: 0 ANSI: 2
[Mon Apr 29 10:17:18 2019] sd 5:0:0:0: Attached scsi generic sg2 type 0
[Mon Apr 29 10:17:18 2019] sd 5:0:0:0: Power-on or device reset occurred
[Mon Apr 29 10:17:18 2019] sd 5:0:0:0: [sdc] Attached SCSI removable disk
[Mon Apr 29 10:17:20 2019] usb 1-10: USB disconnect, device number 10
[Mon Apr 29 10:17:21 2019] usb 1-10: new high-speed USB device number 11 using xhci_hcd
[Mon Apr 29 10:17:21 2019] usb-storage 1-10:1.0: USB Mass Storage device detected
[Mon Apr 29 10:17:21 2019] scsi host5: usb-storage 1-10:1.0
[Mon Apr 29 10:17:22 2019] scsi 5:0:0:0: Direct-Access     Linux    File-CD Gadget   0000 PQ: 0 ANSI: 2
[Mon Apr 29 10:17:22 2019] sd 5:0:0:0: Attached scsi generic sg2 type 0
[Mon Apr 29 10:17:22 2019] sd 5:0:0:0: Power-on or device reset occurred
[Mon Apr 29 10:17:22 2019] sd 5:0:0:0: [sdc] Attached SCSI removable disk
[Mon Apr 29 10:18:07 2019] usb 1-10: USB disconnect, device number 11
[Mon Apr 29 10:18:07 2019] usb 1-10: new high-speed USB device number 12 using xhci_hcd
[Mon Apr 29 10:18:07 2019] usb-storage 1-10:1.0: USB Mass Storage device detected
[Mon Apr 29 10:18:07 2019] scsi host5: usb-storage 1-10:1.0
[Mon Apr 29 10:18:08 2019] scsi 5:0:0:0: Direct-Access     Linux    File-CD Gadget   0000 PQ: 0 ANSI: 2
[Mon Apr 29 10:18:08 2019] sd 5:0:0:0: Attached scsi generic sg2 type 0
[Mon Apr 29 10:18:08 2019] sd 5:0:0:0: Power-on or device reset occurred
[Mon Apr 29 10:18:08 2019] sd 5:0:0:0: [sdc] Attached SCSI removable disk
[Mon Apr 29 10:19:23 2019] [drm] DM_MST: stopping TM on aconnector: 00000000c53c37c4 [id: 59]
[Mon Apr 29 10:19:23 2019] [drm] DM_MST: Disabling connector: 00000000f322b7c6 [id: 83] [master: 00000000c53c37c4]
[Mon Apr 29 10:19:23 2019] [drm] DM_MST: Disabling connector: 00000000d75129fc [id: 103] [master: 00000000c53c37c4]
[Mon Apr 29 10:19:24 2019] [drm] DM_MST: starting TM on aconnector: 00000000c53c37c4 [id: 59]
[Mon Apr 29 10:19:25 2019] [drm] DM_MST: added connector: 0000000017233044 [id: 92] [master: 00000000c53c37c4]
[Mon Apr 29 10:19:25 2019] [drm] SADs count is: -2, don't need to read it
[Mon Apr 29 10:19:25 2019] [drm] DM_MST: added connector: 00000000e263cd87 [id: 108] [master: 00000000c53c37c4]
[Mon Apr 29 10:19:25 2019] [drm] SADs count is: -2, don't need to read it
[Mon Apr 29 10:19:25 2019] [drm] Failed to updateMST allocation table forpipe idx:0
[Mon Apr 29 10:19:25 2019] [drm] Failed to updateMST allocation table forpipe idx:0
[Mon Apr 29 10:19:39 2019] [drm] DM_MST: stopping TM on aconnector: 00000000c53c37c4 [id: 59]
[Mon Apr 29 10:19:39 2019] [drm] DM_MST: Disabling connector: 0000000017233044 [id: 92] [master: 00000000c53c37c4]
[Mon Apr 29 10:19:39 2019] [drm] DM_MST: Disabling connector: 00000000e263cd87 [id: 108] [master: 00000000c53c37c4]
[Mon Apr 29 10:19:43 2019] [drm] DM_MST: starting TM on aconnector: 00000000c53c37c4 [id: 59]
[Mon Apr 29 10:19:43 2019] [drm] DM_MST: added connector: 000000001c781c8d [id: 85] [master: 00000000c53c37c4]
[Mon Apr 29 10:19:43 2019] [drm] amdgpu_dm_irq_schedule_work FAILED src 12
[Mon Apr 29 10:19:43 2019] [drm] SADs count is: -2, don't need to read it
[Mon Apr 29 10:19:43 2019] [drm] Failed to updateMST allocation table forpipe idx:0
[Mon Apr 29 10:19:44 2019] [drm] DM_MST: added connector: 00000000e78a9cad [id: 97] [master: 00000000c53c37c4]
[Mon Apr 29 10:19:44 2019] [drm] SADs count is: -2, don't need to read it
```

This still happens with Linux 5.1. I had to give the system away, so won’t have access to it.

I had hoped for more help of the AMD developers to track down regressions.

We're able to reproduce the problem.

I believe that we found the issue was caused by the new common helper DRM for DP MST hotplug. A fix is in the works for this issue.

(In reply to Nicholas Kazlauskas from comment #3)
> We're able to reproduce the problem.
> 
> I believe that we found the issue was caused by the new common helper DRM
> for DP MST hotplug. A fix is in the works for this issue.

Great news! Thank you for the update.

Is there another bug report this should be merged with?

(In reply to Paul Menzel from comment #4)
> (In reply to Nicholas Kazlauskas from comment #3)
> > We're able to reproduce the problem.
> > 
> > I believe that we found the issue was caused by the new common helper DRM
> > for DP MST hotplug. A fix is in the works for this issue.
> 
> Great news! Thank you for the update.
> 
> Is there another bug report this should be merged with?

Not that I'm aware of at least - I think this was the first user report for the issue.

I get this on kernel 5.1.8 when I use a KVM switch with DisplayPort daisy-chained MST monitors. It occurs when I switch back.

I can workaround by powering off the last monitor in the chain, and then powering it back on. 

Jun 11 15:29:05 u24b6-nzxt kernel: [97725.438966] [drm] Failed to updateMST allocation table forpipe idx:0
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687046] WARNING: CPU: 8 PID: 3551 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2361 update_mst_stream_alloc_table+0x143/0x150 [amdgpu]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687047] Modules linked in: tcp_diag inet_diag ipt_MASQUERADE nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo iptable_nat xt_addrtype iptable_filter bpfilter xt_conntrack nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter bridge stp llc overlay intel_rapl nls_iso8859_1 x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 crypto_simd cryptd glue_helper intel_cstate intel_rapl_perf snd_hda_codec_realtek snd_hda_codec_generic snd_hda_codec_hdmi ledtrig_audio eeepc_wmi asus_wmi sparse_keymap video amdgpu wmi_bmof snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event chash mxm_wmi gpu_sched snd_rawmidi amd_iommu_v2 ttm drm_kms_helper cp210x usbserial snd_seq drm snd_seq_device i2c_algo_bit snd_timer fb_sys_fops syscopyarea sysfillrect sysimgblt snd mei_me soundcore mei joydev input_leds mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687068]  x_tables autofs4 raid10 raid1 raid0 multipath linear raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx uas xor usb_storage raid6_pq libcrc32c hid_generic usbhid hid r8169 lpc_ich i2c_i801 e1000e realtek ahci libahci wmi
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687078] CPU: 8 PID: 3551 Comm: gnome-shell Kdump: loaded Tainted: G        W         5.1.8-050108-generic #201906090832
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687078] Hardware name: System manufacturer System Product Name/X79-DELUXE, BIOS 4805 02/02/2016
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687121] RIP: 0010:update_mst_stream_alloc_table+0x143/0x150 [amdgpu]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687122] Code: 00 48 83 c0 10 48 83 f8 60 75 dd 48 8b 44 24 68 65 48 33 04 25 28 00 00 00 75 16 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 <0f> 0b e9 09 ff ff ff e8 01 10 12 d1 90 0f 1f 44 00 00 55 48 89 e5
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687123] RSP: 0018:ffff9efc03faf650 EFLAGS: 00010202
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687124] RAX: 0000000000000002 RBX: ffff9120f30085c0 RCX: 0000000000000000
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687124] RDX: ffff9efc03faf73c RSI: ffff912613584400 RDI: ffff9efc03faf6b0
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687125] RBP: ffff9efc03faf6e8 R08: ffff9126145f0200 R09: ffff91245c560800
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687125] R10: 0000000000000001 R11: ffff9efc03faf650 R12: ffff912614459000
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687126] R13: ffff9126145f0200 R14: ffff9126145f0200 R15: 0000000000000002
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687127] FS:  00007ff189d41cc0(0000) GS:ffff91261ea00000(0000) knlGS:0000000000000000
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687127] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687128] CR2: 00007fdda4457000 CR3: 00000006d63d2006 CR4: 00000000001606e0
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687128] Call Trace:
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687172]  core_link_enable_stream+0x4c0/0x10d0 [amdgpu]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687216]  ? dig_connect_to_otg+0x75/0xe0 [amdgpu]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687258]  dce110_apply_ctx_to_hw+0x441/0x4b0 [amdgpu]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687298]  dc_commit_state+0x2cf/0x5a0 [amdgpu]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687312]  ? drm_calc_timestamping_constants+0x106/0x150 [drm]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687355]  amdgpu_dm_atomic_commit_tail+0x1c8/0xa40 [amdgpu]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687358]  ? ttm_bo_handle_move_mem+0x10f/0x500 [ttm]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687361]  ? ttm_bo_validate+0x11b/0x130 [ttm]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687404]  ? bw_calcs+0x106f/0x1e50 [amdgpu]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687435]  ? amdgpu_bo_pin_restricted+0x61/0x270 [amdgpu]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687438]  ? _cond_resched+0x19/0x30
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687439]  ? wait_for_completion_timeout+0x38/0x140
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687441]  ? _cond_resched+0x19/0x30
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687442]  ? wait_for_completion_interruptible+0x35/0x1a0
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687450]  commit_tail+0x42/0x70 [drm_kms_helper]
Jun 11 15:29:05 u24b6-nzxt kernel: [97725.687454]  ? commit_tail+0x42/0x70 [drm_kms_helper]

I think this is fixed 5.2 and the latest amd-staging-drm-next.

Why can’t it be said for certain, if the issue is fixed? The commit message should reference this report, but `git log --grep 110381` does not show anything.

I am still seeing this error on kernel 5.2.2. I think it happens when I switch away the monitors to another host on the KVM switch.

Switching back later, I get only 1 display, problematic as some windows are on the non-working display. <alt><ctrl><f3> to console, both displays mirrored, with text mode login prompt. Then <alt><ctrl><f2> back to graphical display, gnome crashes, I get the gnome login screen. Things had improved a bit until amd's latest updates in 5.2.x.

Jul 29 09:05:33 u24b6-nzxt kernel: [255451.664351] [drm] DM_MST: added connector: 00000000629ccdae [id: 113] [master: 0000000088dc6666]
Jul 29 09:05:33 u24b6-nzxt kernel: [255451.664379] [drm] DM_MST: added connector: 00000000a50ff579 [id: 118] [master: 0000000088dc6666]
Jul 29 09:05:33 u24b6-nzxt kernel: [255451.723246] [drm] Failed to updateMST allocation table forpipe idx:0
Jul 29 09:05:34 u24b6-nzxt kernel: [255451.960729] [drm] Failed to updateMST allocation table forpipe idx:0
Jul 29 09:05:34 u24b6-nzxt gnome-shell[9289]: Add Monitors ...
Jul 29 09:05:34 u24b6-nzxt gnome-shell[9289]: new: i1x1920y0w1920h1080
Jul 29 09:05:34 u24b6-nzxt gnome-shell[9289]: pi:0
Jul 29 09:05:34 u24b6-nzxt gnome-shell[9289]: i:0 x:0 y:0 w:1920 h:1080
Jul 29 09:05:34 u24b6-nzxt gnome-shell[9289]: i:1 x:1920 y:0 w:1920 h:1080
Jul 29 09:05:34 u24b6-nzxt gnome-shell[9289]: g_value_set_object: assertion 'G_IS_OBJECT (v_object)' failed
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020762] WARNING: CPU: 0 PID: 9289 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2404 update_mst_stream_alloc_table+0x11e/0x130 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020763] Modules linked in: tcp_diag inet_diag xt_MASQUERADE nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo iptable_nat xt_addrtype iptable_filter bpfilter xt_conntrack nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 br_netfilter bridge stp llc overlay nls_iso8859_1 intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 crypto_simd cryptd glue_helper intel_cstate intel_rapl_perf snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hda_core amdgpu snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event eeepc_wmi asus_wmi sparse_keymap snd_rawmidi video snd_seq amd_iommu_v2 gpu_sched ttm wmi_bmof drm_kms_helper cp210x snd_seq_device mxm_wmi usbserial joydev input_leds snd_timer drm i2c_algo_bit snd fb_sys_fops syscopyarea sysfillrect mei_me sysimgblt soundcore mei mac_hid sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020783]  autofs4 raid10 raid1 raid0 multipath linear raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor uas usb_storage raid6_pq libcrc32c hid_generic usbhid hid r8169 lpc_ich i2c_i801 e1000e realtek ahci libahci wmi
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020793] CPU: 0 PID: 9289 Comm: gnome-shell Kdump: loaded Tainted: G        W         5.2.2-050202-generic #201907231250
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020794] Hardware name: System manufacturer System Product Name/X79-DELUXE, BIOS 4805 02/02/2016
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020838] RIP: 0010:update_mst_stream_alloc_table+0x11e/0x130 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020839] Code: 28 00 00 00 75 2b 48 8d 65 e0 5b 41 5c 41 5d 41 5e 5d c3 0f b6 06 49 89 1c 24 41 88 44 24 08 0f b6 46 01 41 88 44 24 09 eb 93 <0f> 0b e9 2f ff ff ff e8 96 81 d9 e5 66 0f 1f 44 00 00 0f 1f 44 00
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020840] RSP: 0018:ffff9a27c3f2f650 EFLAGS: 00010202
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020840] RAX: 0000000000000002 RBX: ffff8ea3507e4380 RCX: 0000000000000000
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020841] RDX: ffff9a27c3f2f714 RSI: ffff8ea3507e4380 RDI: ffff9a27c3f2f6b0
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020842] RBP: ffff9a27c3f2f6e8 R08: ffffffffc0469df5 R09: 0000000000000000
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020842] R10: ffff8ea353eb8a00 R11: ffff9a27c3f2f650 R12: ffff8ea353eb8a00
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020842] R13: ffff8ea352f3d400 R14: 0000000000000002 R15: ffff8ea353eb8a00
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020843] FS:  00007f530ace1cc0(0000) GS:ffff8ea35f800000(0000) knlGS:0000000000000000
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020844] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020845] CR2: 000015124f029000 CR3: 00000001b8150005 CR4: 00000000001606f0
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020845] Call Trace:
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020890]  core_link_enable_stream+0x5ee/0xa10 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020933]  dce110_apply_ctx_to_hw+0x441/0x4c0 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.020976]  dc_commit_state_no_check+0x228/0x580 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021018]  dc_commit_state+0x96/0xb0 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021061]  amdgpu_dm_atomic_commit_tail+0x3b5/0xdb0 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021065]  ? ttm_bo_handle_move_mem+0x10f/0x500 [ttm]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021067]  ? ttm_bo_validate+0x128/0x140 [ttm]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021111]  ? print_bw_calcs_data.isra.0+0x18ae/0x2470 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021140]  ? amdgpu_bo_pin_restricted+0x266/0x2a0 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021144]  ? _cond_resched+0x19/0x30
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021145]  ? wait_for_completion_timeout+0x3a/0x120
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021146]  ? _cond_resched+0x19/0x30
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021148]  ? wait_for_completion_interruptible+0x37/0x160
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021156]  commit_tail+0x41/0x70 [drm_kms_helper]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021160]  ? commit_tail+0x41/0x70 [drm_kms_helper]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021164]  drm_atomic_helper_commit+0x118/0x120 [drm_kms_helper]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021207]  amdgpu_dm_atomic_commit+0xb1/0xf0 [amdgpu]
Jul 29 09:05:35 u24b6-nzxt kernel: [255453.021221]  drm_atomic_commit+0x4a/0x50 [drm]

Also occurred on 5.2.1.

05:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Vega 10 XL/XT [Radeon RX Vega 56/64] [1002:687f] (rev c1) (prog-if 00 [VGA controller])
        Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] RX Vega64 [1002:0b36]

Jul 29 07:23:38 servo kernel: WARNING: CPU: 1 PID: 1547 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2404 update_mst_stream_alloc_table+0x124/0x130 [amdgpu]
Jul 29 07:23:38 servo kernel: Modules linked in: tcp_diag inet_diag dm_snapshot fuse isofs loop xfs jfs nls_utf8 udf crc_itu_t uas usb_storage vhost_net vhost tap tun ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache ib_isert iscsi_target_mod ib_srpt target_core_mod ib_srp scsi_transport_srp rpcrdma sunrpc rdma_ucm ib_iser rdma_cm ib_umad iw_cm ib_ipoib libiscsi scsi_transport_iscsi ib_cm mlx4_ib ib_uverbs ib_core mlx4_en msr nct6775 hwmon_vid nls_iso8859_1 nls_cp437 vfat fat ipmi_ssif intel_rapl sb_edac x86_pkg_temp_thermal intel_powerclamp
coretemp bridge stp kvm_intel llc kvm irqbypass snd_hda_codec_realtek intel_cstate snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi iTCO_wdt iTCO_vendor_support snd_hda_intel mousedev snd_hda_codec joydev input_leds snd_hda_core intel_uncore snd_hwdep intel_rapl_perf snd_pcm mlx4_core pcspkr snd_timer snd ipmi_si e1000e i2c_i801 mei_me ioatdma ipmi_devintf mei lpc_ich soundcore
Jul 29 07:23:38 servo kernel:  dca wmi ipmi_msghandler pcc_cpufreq evdev mac_hid vmmon(OE) vmw_vmci vboxnetflt(OE) vboxnetadp(OE) vboxpci(OE) vboxdrv(OE) sg crypto_user ip_tables x_tables btrfs xor raid6_pq algif_skcipher af_alg dm_thin_pool dm_persistent_data dm_bio_prison dm_bufio libcrc32c crc32c_generic hid_generic usbhid hid sr_mod cdrom sd_mod dm_crypt dm_mod crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel isci aesni_intel libsas ahci scsi_transport_sas libahci aes_x86_64 crypto_simd libata cryptd glue_helper scsi_mod ehci_pci ehci_hcd amdgpu amd_iommu_v2 gpu_sched i2c_algo_bit ttm drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm agpgart
Jul 29 07:23:38 servo kernel: CPU: 1 PID: 1547 Comm: Xorg Tainted: G           OE     5.2.1-arch1-1-ARCH #1
Jul 29 07:23:38 servo kernel: Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./EP2C602, BIOS P1.90 04/12/2018
Jul 29 07:23:38 servo kernel: RIP: 0010:update_mst_stream_alloc_table+0x124/0x130 [amdgpu]
Jul 29 07:23:38 servo kernel: Code: 33 04 25 28 00 00 00 75 28 48 8d 65 e0 5b 41 5c 41 5d 41 5e 5d c3 41 0f b6 03 4c 89 26 88 46 08 41 0f b6 43 01 88 46 09 eb 96 <0f> 0b e9 33 ff ff ff e8 60 f0 eb fb 66 66 66 66 90 55 48 89 e5 41
Jul 29 07:23:38 servo kernel: RSP: 0018:ffffac5f880df620 EFLAGS: 00010202
Jul 29 07:23:38 servo kernel: RAX: 0000000000000002 RBX: ffff8f1b96868800 RCX: 0000000000000000
Jul 29 07:23:38 servo kernel: RDX: ffffac5f880df608 RSI: ffff8f1b961af100 RDI: ffffac5f880df680
Jul 29 07:23:38 servo kernel: RBP: ffffac5f880df6b8 R08: ffffffffc01a0db5 R09: 0000000000000000
Jul 29 07:23:38 servo kernel: R10: ffffac5f880df620 R11: 0000000000000001 R12: ffff8f1b961af100
Jul 29 07:23:38 servo kernel: R13: ffffac5f880df70c R14: 0000000000000002 R15: 0000000000000004
Jul 29 07:23:38 servo kernel: FS:  00007fc20580bdc0(0000) GS:ffff8f1b9f840000(0000) knlGS:0000000000000000
Jul 29 07:23:38 servo kernel: CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
Jul 29 07:23:38 servo kernel: CR2: 000055ff36f2fc7e CR3: 00000008540e0005 CR4: 00000000000606e0
Jul 29 07:23:38 servo kernel: Call Trace:
Jul 29 07:23:38 servo kernel:  core_link_enable_stream+0x5e0/0x1130 [amdgpu]
Jul 29 07:23:38 servo kernel:  ? set_pixel_encoding.isra.0+0x68/0x150 [amdgpu]
Jul 29 07:23:38 servo kernel:  dce110_apply_ctx_to_hw+0x446/0x4b0 [amdgpu]
Jul 29 07:23:38 servo kernel:  dc_commit_state+0x272/0x5a0 [amdgpu]
Jul 29 07:23:38 servo kernel:  amdgpu_dm_atomic_commit_tail+0xc64/0x1a20 [amdgpu]
Jul 29 07:23:38 servo kernel:  ? free_one_page+0xac/0x480
Jul 29 07:23:38 servo kernel:  ? bw_calcs+0x930/0x3900 [amdgpu]
Jul 29 07:23:38 servo kernel:  ? commit_tail+0x3c/0x70 [drm_kms_helper]
Jul 29 07:23:38 servo kernel:  ? __bpf_trace_amdgpu_dc_wreg+0x30/0x30 [amdgpu]
Jul 29 07:23:38 servo kernel:  commit_tail+0x3c/0x70 [drm_kms_helper]
Jul 29 07:23:38 servo kernel:  drm_atomic_helper_commit+0x10e/0x120 [drm_kms_helper]
Jul 29 07:23:38 servo kernel:  drm_atomic_helper_set_config+0x82/0x90 [drm_kms_helper]
Jul 29 07:23:38 servo kernel:  drm_mode_setcrtc+0x1fa/0x720 [drm]
Jul 29 07:23:38 servo kernel:  ? drm_mode_getcrtc+0x190/0x190 [drm]
Jul 29 07:23:38 servo kernel:  drm_ioctl_kernel+0xbf/0x100 [drm]
Jul 29 07:23:38 servo kernel:  drm_ioctl+0x244/0x3d0 [drm]
Jul 29 07:23:38 servo kernel:  ? drm_mode_getcrtc+0x190/0x190 [drm]
Jul 29 07:23:38 servo kernel:  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
Jul 29 07:23:38 servo kernel:  do_vfs_ioctl+0x447/0x6d0
Jul 29 07:23:38 servo kernel:  ? __fget+0x71/0xa0
Jul 29 07:23:38 servo kernel:  ksys_ioctl+0x60/0x90
Jul 29 07:23:38 servo kernel:  __x64_sys_ioctl+0x1a/0x20
Jul 29 07:23:38 servo kernel:  do_syscall_64+0x5b/0x1b0
Jul 29 07:23:38 servo kernel:  entry_SYSCALL_64_after_hwframe+0x44/0xa9
Jul 29 07:23:38 servo kernel: RIP: 0033:0x7fc206c3521b
Jul 29 07:23:38 servo kernel: Code: 0f 1e fa 48 8b 05 75 8c 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 45 8c 0c 00 f7 d8 64 89 01 48
Jul 29 07:23:38 servo kernel: RSP: 002b:00007fff9d9265c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
Jul 29 07:23:38 servo kernel: RAX: ffffffffffffffda RBX: 00007fff9d926600 RCX: 00007fc206c3521b
Jul 29 07:23:38 servo kernel: RDX: 00007fff9d926600 RSI: 00000000c06864a2 RDI: 000000000000000a
Jul 29 07:23:38 servo kernel: RBP: 00000000c06864a2 R08: 0000000000000000 R09: 000055ff371433a0
Jul 29 07:23:38 servo kernel: R10: 0000000000000000 R11: 0000000000000246 R12: 000055ff36724290
Jul 29 07:23:38 servo kernel: R13: 000000000000000a R14: 0000000000000000 R15: 000055ff371433a0
Jul 29 07:23:38 servo kernel: ---[ end trace 3bc8de046fc13a5e ]---

Seems to happen as well on 5.3.7 when waking two daisy-chained monitors from sleep.

01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev ef)


[ 4511.360909] WARNING: CPU: 5 PID: 1848 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2462 update_mst_stream_alloc_table.cold+0x15/0x28 [amdgpu]
[ 4511.360910] Modules linked in: uinput xt_CHECKSUM xt_MASQUERADE nf_nat_tftp nf_conntrack_tftp tun bridge stp llc nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_REJECT nf_reject_ipv6 ip6t_rpfilter ipt_REJECT nf_reject_ipv4 xt_conntrack ebtable_nat ebtable_broute ip6table_nat ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_nat iptable_mangle iptable_raw iptable_security nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ip_set nfnetlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass ipmi_ssif snd_hda_codec_hdmi snd_hda_intel crct10dif_pclmul iTCO_wdt crc32_pclmul iTCO_vendor_support snd_hda_codec ghash_clmulni_intel intel_cstate snd_hda_core snd_hwdep snd_seq intel_uncore snd_seq_device intel_rapl_perf i2c_i801 intel_pch_thermal snd_pcm mei_me joydev lpc_ich snd_timer mei snd soundcore ipmi_si ipmi_devintf ipmi_msghandler ie31200_edac
[ 4511.360925]  acpi_pad binfmt_misc ip_tables hid_logitech_hidpp hid_corsair hid_logitech_dj uas usb_storage amdgpu amd_iommu_v2 gpu_sched ttm drm_kms_helper drm igb crc32c_intel dca i2c_algo_bit video fuse
[ 4511.360931] CPU: 5 PID: 1848 Comm: gnome-shell Tainted: G        W         5.3.7-301.fc31.x86_64 #1
[ 4511.360932] Hardware name: Supermicro PIO-518D-TLN4F-ST031/X10SLM+-LN4F, BIOS 3.2a 05/31/2019
[ 4511.360976] RIP: 0010:update_mst_stream_alloc_table.cold+0x15/0x28 [amdgpu]
[ 4511.360977] Code: fd ff 48 c7 c7 70 fc a2 c0 e8 63 d9 7d f3 0f 0b e9 0b 06 fd ff 48 c7 c7 b8 fd a2 c0 48 89 14 24 48 89 74 24 08 e8 47 d9 7d f3 <0f> 0b 48 8b 14 24 48 8b 74 24 08 44 8b 32 e9 a6 06 fd ff 48 c7 c7
[ 4511.360978] RSP: 0018:ffffb88400b5f630 EFLAGS: 00010246
[ 4511.360978] RAX: 0000000000000024 RBX: ffffa04003a72000 RCX: 0000000000000000
[ 4511.360979] RDX: 0000000000000000 RSI: ffffa0400fb57908 RDI: ffffa0400fb57908
[ 4511.360979] RBP: ffffb88400b5f6d0 R08: ffffa0400fb57908 R09: 00000000000004b1
[ 4511.360980] R10: 000000000001a4b8 R11: 0000000000000003 R12: ffffb88400b5f640
[ 4511.360980] R13: ffffa0400a675800 R14: 0000000000000002 R15: ffffa04003a72000
[ 4511.360981] FS:  00007f8e2aa65d00(0000) GS:ffffa0400fb40000(0000) knlGS:0000000000000000
[ 4511.360981] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 4511.360982] CR2: 00007fb99e333c88 CR3: 000000040bf04005 CR4: 00000000001606e0
[ 4511.360982] Call Trace:
[ 4511.361026]  core_link_enable_stream+0x665/0x870 [amdgpu]
[ 4511.361068]  ? dce110_apply_ctx_to_hw+0x4b0/0x530 [amdgpu]
[ 4511.361108]  dce110_apply_ctx_to_hw+0x4b0/0x530 [amdgpu]
[ 4511.361149]  dc_commit_state+0x280/0x5c0 [amdgpu]
[ 4511.361190]  amdgpu_dm_atomic_commit_tail+0xcfc/0x1c40 [amdgpu]
[ 4511.361216]  ? amdgpu_move_blit.constprop.0+0x9c/0x110 [amdgpu]
[ 4511.361242]  ? amdgpu_bo_move+0x142/0x280 [amdgpu]
[ 4511.361244]  ? ttm_bo_handle_move_mem+0x10b/0x4f0 [ttm]
[ 4511.361247]  ? ttm_bo_validate+0x11b/0x130 [ttm]
[ 4511.361272]  ? amdgpu_bo_pin_restricted+0x62/0x270 [amdgpu]
[ 4511.361274]  ? ttm_eu_backoff_reservation+0x44/0x80 [ttm]
[ 4511.361315]  ? dm_plane_helper_prepare_fb+0x16a/0x2a0 [amdgpu]
[ 4511.361318]  ? _cond_resched+0x15/0x30
[ 4511.361319]  ? wait_for_completion_timeout+0x38/0x170
[ 4511.361326]  ? commit_tail+0x3c/0x70 [drm_kms_helper]
[ 4511.361367]  ? amdgpu_dm_audio_eld_notify+0x60/0x60 [amdgpu]
[ 4511.361371]  commit_tail+0x3c/0x70 [drm_kms_helper]
[ 4511.361375]  drm_atomic_helper_commit+0x108/0x110 [drm_kms_helper]
[ 4511.361379]  drm_atomic_helper_set_config+0x81/0x90 [drm_kms_helper]
[ 4511.361390]  drm_mode_setcrtc+0x194/0x6a0 [drm]
[ 4511.361397]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[ 4511.361402]  drm_ioctl_kernel+0xaa/0xf0 [drm]
[ 4511.361408]  drm_ioctl+0x208/0x390 [drm]
[ 4511.361414]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[ 4511.361437]  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[ 4511.361440]  do_vfs_ioctl+0x405/0x660
[ 4511.361441]  ksys_ioctl+0x5e/0x90
[ 4511.361442]  __x64_sys_ioctl+0x16/0x20
[ 4511.361444]  do_syscall_64+0x5f/0x1a0
[ 4511.361446]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 4511.361447] RIP: 0033:0x7f8e2e72a2fb
[ 4511.361448] Code: 0f 1e fa 48 8b 05 8d 9b 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 5d 9b 0c 00 f7 d8 64 89 01 48
[ 4511.361449] RSP: 002b:00007ffed440abf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 4511.361450] RAX: ffffffffffffffda RBX: 00007ffed440ac30 RCX: 00007f8e2e72a2fb
[ 4511.361450] RDX: 00007ffed440ac30 RSI: 00000000c06864a2 RDI: 0000000000000009
[ 4511.361450] RBP: 00000000c06864a2 R08: 0000000000000000 R09: 0000562b0979c8a0
[ 4511.361451] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 4511.361451] R13: 0000000000000009 R14: 0000562b0979c8a0 R15: 0000562b0cf98280
[ 4511.361452] ---[ end trace 61c74c75b25fddce ]---

Still happening on 5.3.8-300.fc31.x86_64

[ 5800.613189] WARNING: CPU: 7 PID: 1924 at drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_link.c:2462 update_mst_stream_alloc_table.cold+0x15/0x28 [amdgpu]
[ 5800.613190] Modules linked in: uinput xt_CHECKSUM xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 ip6table_mangle ip6table_nat iptable_mangle iptable_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 libcrc32c ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter tun bridge stp llc sunrpc intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm snd_hda_codec_hdmi irqbypass snd_hda_intel ipmi_ssif snd_hda_codec crct10dif_pclmul crc32_pclmul iTCO_wdt snd_hda_core iTCO_vendor_support snd_hwdep ghash_clmulni_intel intel_cstate snd_seq intel_uncore intel_rapl_perf snd_seq_device snd_pcm joydev snd_timer intel_pch_thermal snd mei_me mei soundcore lpc_ich i2c_i801 ie31200_edac ipmi_si ipmi_devintf ipmi_msghandler acpi_pad binfmt_misc ip_tables hid_logitech_hidpp hid_corsair hid_logitech_dj uas usb_storage amdgpu amd_iommu_v2 gpu_sched ttm drm_kms_helper drm igb crc32c_intel dca i2c_algo_bit video fuse
[ 5800.613216] CPU: 7 PID: 1924 Comm: gnome-shell Tainted: G        W         5.3.8-300.fc31.x86_64 #1
[ 5800.613217] Hardware name: Supermicro PIO-518D-TLN4F-ST031/X10SLM+-LN4F, BIOS 3.2a 05/31/2019
[ 5800.613299] RIP: 0010:update_mst_stream_alloc_table.cold+0x15/0x28 [amdgpu]
[ 5800.613301] Code: fd ff 48 c7 c7 70 fc 6b c0 e8 37 d7 b4 f2 0f 0b e9 9f 06 fd ff 48 c7 c7 b8 fd 6b c0 48 89 14 24 48 89 74 24 08 e8 1b d7 b4 f2 <0f> 0b 48 8b 14 24 48 8b 74 24 08 44 8b 32 e9 3a 07 fd ff 48 c7 c7
[ 5800.613302] RSP: 0018:ffffb83e8272b630 EFLAGS: 00010246
[ 5800.613303] RAX: 0000000000000024 RBX: ffff997ec409c800 RCX: 0000000000000000
[ 5800.613304] RDX: 0000000000000000 RSI: ffff997ecfbd7908 RDI: ffff997ecfbd7908
[ 5800.613305] RBP: ffffb83e8272b6d0 R08: ffff997ecfbd7908 R09: 00000000000004be
[ 5800.613306] R10: 000000000001ab18 R11: 0000000000000003 R12: ffffb83e8272b640
[ 5800.613306] R13: ffff997ecac53800 R14: 0000000000000002 R15: ffff997ec409c800
[ 5800.613308] FS:  00007fe6cea30d00(0000) GS:ffff997ecfbc0000(0000) knlGS:0000000000000000
[ 5800.613309] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5800.613309] CR2: 00007f00643fa428 CR3: 000000037f0ce004 CR4: 00000000001606e0
[ 5800.613310] Call Trace:
[ 5800.613391]  core_link_enable_stream+0x665/0x870 [amdgpu]
[ 5800.613469]  ? dce110_apply_ctx_to_hw+0x4b0/0x530 [amdgpu]
[ 5800.613545]  dce110_apply_ctx_to_hw+0x4b0/0x530 [amdgpu]
[ 5800.613623]  dc_commit_state+0x280/0x5c0 [amdgpu]
[ 5800.613701]  amdgpu_dm_atomic_commit_tail+0xcfc/0x1c40 [amdgpu]
[ 5800.613752]  ? amdgpu_move_blit.constprop.0+0x9c/0x110 [amdgpu]
[ 5800.613801]  ? amdgpu_bo_move+0x142/0x280 [amdgpu]
[ 5800.613807]  ? ttm_bo_handle_move_mem+0x10b/0x4f0 [ttm]
[ 5800.613811]  ? ttm_bo_validate+0x11b/0x130 [ttm]
[ 5800.613861]  ? amdgpu_bo_pin_restricted+0x62/0x270 [amdgpu]
[ 5800.613865]  ? ttm_eu_backoff_reservation+0x44/0x80 [ttm]
[ 5800.613943]  ? dm_plane_helper_prepare_fb+0x16a/0x2a0 [amdgpu]
[ 5800.613946]  ? _cond_resched+0x15/0x30
[ 5800.613948]  ? wait_for_completion_timeout+0x38/0x170
[ 5800.613961]  ? commit_tail+0x3c/0x70 [drm_kms_helper]
[ 5800.614038]  ? amdgpu_dm_audio_eld_notify+0x60/0x60 [amdgpu]
[ 5800.614046]  commit_tail+0x3c/0x70 [drm_kms_helper]
[ 5800.614053]  drm_atomic_helper_commit+0x108/0x110 [drm_kms_helper]
[ 5800.614060]  drm_atomic_helper_set_config+0x81/0x90 [drm_kms_helper]
[ 5800.614081]  drm_mode_setcrtc+0x194/0x6a0 [drm]
[ 5800.614094]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[ 5800.614103]  drm_ioctl_kernel+0xaa/0xf0 [drm]
[ 5800.614113]  drm_ioctl+0x208/0x390 [drm]
[ 5800.614124]  ? drm_mode_getcrtc+0x180/0x180 [drm]
[ 5800.614170]  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[ 5800.614173]  do_vfs_ioctl+0x405/0x660
[ 5800.614175]  ksys_ioctl+0x5e/0x90
[ 5800.614177]  __x64_sys_ioctl+0x16/0x20
[ 5800.614181]  do_syscall_64+0x5f/0x1a0
[ 5800.614184]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 5800.614186] RIP: 0033:0x7fe6d26ff2fb
[ 5800.614188] Code: 0f 1e fa 48 8b 05 8d 9b 0c 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 5d 9b 0c 00 f7 d8 64 89 01 48
[ 5800.614189] RSP: 002b:00007ffca21673a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
[ 5800.614190] RAX: ffffffffffffffda RBX: 00007ffca21673e0 RCX: 00007fe6d26ff2fb
[ 5800.614191] RDX: 00007ffca21673e0 RSI: 00000000c06864a2 RDI: 0000000000000009
[ 5800.614192] RBP: 00000000c06864a2 R08: 0000000000000000 R09: 000055edeef02df0
[ 5800.614193] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 5800.614193] R13: 0000000000000009 R14: 000055edeef02df0 R15: 000055edee809a80
[ 5800.614195] ---[ end trace b48771c5bafc50fa ]---

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This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

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