Comment # 6
on bug 110381
from John Francis
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]
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