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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Failed to updateMST allocation table forpipe idx:0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110381#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Failed to updateMST allocation table forpipe idx:0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=110381">bug 110381</a>
from <span class="vcard"><a class="email" href="mailto:john.e.francis@gmail.com" title="John Francis <john.e.francis@gmail.com>"> <span class="fn">John Francis</span></a>
</span></b>
<pre>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]</pre>
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