[Bug 111755] WARNING: CPU: 9 PID: 2908 at drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_hwseq.c:1942 dcn20_setup_gsl_group_as_lock+0x94/0x220 [amdgpu]

* [Bug 111755] WARNING: CPU: 9 PID: 2908 at drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_hwseq.c:1942 dcn20_setup_gsl_group_as_lock+0x94/0x220 [amdgpu]
@ 2019-09-20  9:22 bugzilla-daemon
  2019-09-20  9:23 ` bugzilla-daemon
                   ` (12 more replies)
  0 siblings, 13 replies; 14+ messages in thread
From: bugzilla-daemon @ 2019-09-20  9:22 UTC (permalink / raw)
  To: dri-devel

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https://bugs.freedesktop.org/show_bug.cgi?id=111755

            Bug ID: 111755
           Summary: WARNING: CPU: 9 PID: 2908 at
                    drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_h
                    wseq.c:1942 dcn20_setup_gsl_group_as_lock+0x94/0x220
                    [amdgpu]
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: not set
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: stijn+bugs@linux-ipv6.be

Created attachment 145440
  --> https://bugs.freedesktop.org/attachment.cgi?id=145440&action=edit
dmesg > dmesg.log

I have a Sapphire Radeon RX 5700 XT, running kernel 5.3.0, LLVM 9.0.0 git
branch release_90 at commit 5364ee5faec778f1ddf86b6b4b8452df7db191c5, mesa
19.2.0-rc4, libdrm 2.4.99, xf86-video-amdgpu git branch master at commit
e6fce59a071220967fcd4e2c9e4a262c72870761, KDE Plasma 5.16.5 and Qt 5.12.5.

When I set the rendering backend in the Plasma compositor settings to OpenGL
2.0 or OpenGL 3.1, I start to get desktop lag after only a few minutes of
uptime. I suspect this is related to the following recurring warning in dmesg:

[  106.734466] WARNING: CPU: 9 PID: 2908 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_hwseq.c:1942
dcn20_setup_gsl_group_as_lock+0x94/0x220 [amdgpu]
[  106.748446] Modules linked in: cmac rfcomm cfg80211 nf_conntrack_netlink
nfnetlink xt_addrtype br_netfilter xfrm_user xfrm4_tunnel tunnel4 ipcomp
xfrm_ipcomp esp4 ah4 af_key xfrm_algo nls_utf8 cifs gcm libarc4 xt_CHECKSUM
xt_MASQUERADE xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp ip6table_mangle
ip6table_nat iptable_mangle iptable_nat ebtable_filter ebtables ip6table_filter
ip6_tables iptable_filter ip_tables x_tables bpfilter bridge stp llc sctp bnep
nvidia_drm(PO) edac_core intel_rapl_msr intel_rapl_common nvidia_modeset(PO)
x86_pkg_temp_thermal nls_iso8859_1 intel_powerclamp nls_cp437 vfat fat amdgpu
nvidia(PO) crct10dif_pclmul snd_hda_codec_realtek crc32_pclmul
snd_hda_codec_hdmi snd_hda_codec_generic crc32c_intel gpu_sched snd_usb_audio
snd_hda_intel ttm ghash_clmulni_intel snd_usbmidi_lib snd_hda_codec aesni_intel
drm_kms_helper snd_hda_core crypto_simd snd_rawmidi btusb iTCO_wdt btrtl btbcm
snd_seq_device cryptd btintel snd_hwdep efi_pstore drm joydev glue_helper
intel_cstate
[  106.748507]  snd_pcm iTCO_vendor_support drm_panel_orientation_quirks evdev
uinput bluetooth intel_uncore syscopyarea snd_timer sysfillrect intel_rapl_perf
wmi_bmof efivars cp210x i2c_i801 ecdh_generic lpc_ich uas ecc snd sysimgblt
e1000e fb_sys_fops soundcore usbserial button sch_fq_codel nct6775 hwmon_vid
coretemp openvswitch nsh nf_conncount nf_nat nf_conntrack nf_defrag_ipv6
nf_defrag_ipv4 vhost_net tun vhost tap kvm_intel kvm nfsd irqbypass msr cpuid
auth_rpcgss nfs_acl efivarfs virtio_ring virtio xts aes_x86_64 ecb cbc
sha1_generic iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi bonding vxlan
ip6_udp_tunnel udp_tunnel macvlan igb i2c_algo_bit dca e1000 fuse overlay nfs
lockd grace sunrpc ext4 mbcache jbd2 multipath linear raid10 raid1 raid0
dm_raid raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx
md_mod dm_snapshot dm_bufio dm_crypt dm_mirror dm_region_hash dm_log dm_mod
firewire_core crc_itu_t hid_sony hid_samsung hid_petalynx hid_monterey
hid_microsoft
[  106.835796]  hid_logitech ff_memless hid_gyration hid_ezkey hid_cypress
hid_chicony hid_cherry hid_belkin hid_apple hid_a4tech hid_generic usbhid
ohci_pci ohci_hcd uhci_hcd hid arcmsr sr_mod cdrom sg usb_storage xhci_pci
ehci_pci xhci_hcd ehci_hcd ptp usbcore pps_core usb_common
[  106.947505] CPU: 9 PID: 2908 Comm: kworker/u24:17 Tainted: P           O   
T 5.3.0-gentoo #1
[  106.956021] Hardware name: System manufacturer System Product Name/P9X79 WS,
BIOS 4901 05/07/2018
[  106.964914] Workqueue: events_unbound commit_work [drm_kms_helper]
[  106.971209] RIP: 0010:dcn20_setup_gsl_group_as_lock+0x94/0x220 [amdgpu]
[  106.977822] Code: b6 80 70 02 00 00 a8 01 0f 84 39 01 00 00 a8 02 0f 84 e6
00 00 00 a8 04 0f 84 4e 01 00 00 48 c7 c7 70 6f 57 a1 e8 af 3e c9 df <0f> 0b c6
83 50 02 00 00 00 48 c7 c7 70 6f 57 a1 e8 9a 3e c9 df 0f
[  106.996588] RSP: 0018:ffffc900021dba68 EFLAGS: 00010286
[  107.001817] RAX: 0000000000000024 RBX: ffff888e38820638 RCX:
0000000000000000
[  107.008950] RDX: 0000000000000000 RSI: ffff88901fa56598 RDI:
ffff88901fa56598
[  107.016081] RBP: 0000000000000001 R08: 0000000000000706 R09:
0000000000000009
[  107.023215] R10: 0000000000000000 R11: ffffc900021db918 R12:
ffff888fc1640000
[  107.030348] R13: ffff888e38821cb8 R14: ffff888e38820638 R15:
0000000000000006
[  107.037480] FS:  0000000000000000(0000) GS:ffff88901fa40000(0000)
knlGS:0000000000000000
[  107.045567] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  107.051313] CR2: 000056015dce91f8 CR3: 000000000220c004 CR4:
00000000000606e0
[  107.058445] Call Trace:
[  107.061020]  dcn20_pipe_control_lock.part.15+0xe5/0x1b0 [amdgpu]
[  107.067136]  dc_commit_updates_for_stream+0xd97/0x1290 [amdgpu]
[  107.073166]  amdgpu_dm_atomic_commit_tail+0xfd2/0x1e10 [amdgpu]
[  107.079117]  ? commit_tail+0x3d/0x70 [drm_kms_helper]
[  107.084185]  commit_tail+0x3d/0x70 [drm_kms_helper]
[  107.089073]  process_one_work+0x198/0x380
[  107.093089]  worker_thread+0x30/0x380
[  107.096758]  ? process_one_work+0x380/0x380
[  107.100949]  kthread+0x113/0x130
[  107.104191]  ? kthread_park+0x80/0x80
[  107.107860]  ret_from_fork+0x35/0x40
[  107.111444] ---[ end trace 9a7bcd62f5f5e527 ]---

This does not occur with the XRender rendering backend.

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