Comment # 39
on bug 111482
from Shmerl
With kernel 5.4-rc6 I'm now seeing such errors once in 20 minutes or so: [37947.927301] WARNING: CPU: 5 PID: 992 at drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_resource.c:2806 dcn20_validate_bandwidth+0xc0/0xd0 [amdgpu] [37947.927301] Modules linked in: snd_seq_dummy(E) snd_seq(E) macvtap(E) macvlan(E) tap(E) xt_CHECKSUM(E) ipt_REJECT(E) nf_reject_ipv4(E) xt_tcpudp(E) nft_compat(E) nft_counter(E) nft_chain_nat(E) nf_nat(E) nf_conntrack(E) nf_defrag_ipv6(E) nf_defrag_ipv4(E) tun(E) bridge(E) stp(E) llc(E) rfcomm(E) nf_tables(E) nfnetlink(E) bnep(E) edac_mce_amd(E) kvm_amd(E) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) ghash_clmulni_intel(E) btusb(E) snd_hda_codec_realtek(E) btrtl(E) btbcm(E) snd_hda_codec_generic(E) btintel(E) ledtrig_audio(E) iwlmvm(E) snd_hda_codec_hdmi(E) bluetooth(E) uvcvideo(E) snd_hda_intel(E) mac80211(E) videobuf2_vmalloc(E) snd_intel_nhlt(E) videobuf2_memops(E) libarc4(E) snd_usb_audio(E) videobuf2_v4l2(E) nls_ascii(E) snd_hda_codec(E) efi_pstore(E) videobuf2_common(E) snd_usbmidi_lib(E) nls_cp437(E) snd_rawmidi(E) aesni_intel(E) snd_hda_core(E) snd_seq_device(E) vfat(E) snd_hwdep(E) videodev(E) crypto_simd(E) drbg(E) fat(E) cryptd(E) iwlwifi(E) snd_pcm(E) mc(E) [37947.927323] glue_helper(E) ansi_cprng(E) wmi_bmof(E) efivars(E) pcspkr(E) sp5100_tco(E) snd_timer(E) ecdh_generic(E) ecc(E) ccp(E) watchdog(E) snd(E) k10temp(E) crc16(E) soundcore(E) sg(E) rng_core(E) cfg80211(E) rfkill(E) evdev(E) acpi_cpufreq(E) nct6775(E) hwmon_vid(E) parport_pc(E) ppdev(E) lp(E) parport(E) efivarfs(E) ip_tables(E) x_tables(E) autofs4(E) xfs(E) btrfs(E) xor(E) zstd_decompress(E) zstd_compress(E) raid6_pq(E) libcrc32c(E) crc32c_generic(E) sd_mod(E) hid_generic(E) usbhid(E) hid(E) amdgpu(E) gpu_sched(E) ttm(E) drm_kms_helper(E) ahci(E) mxm_wmi(E) libahci(E) drm(E) crc32c_intel(E) xhci_pci(E) libata(E) xhci_hcd(E) i2c_piix4(E) mfd_core(E) igb(E) scsi_mod(E) dca(E) usbcore(E) ptp(E) pps_core(E) i2c_algo_bit(E) nvme(E) nvme_core(E) wmi(E) button(E) [37947.927347] CPU: 5 PID: 992 Comm: Xorg Tainted: G W E 5.4.0-rc6+ #29 [37947.927348] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X570 Taichi, BIOS P2.11 09/25/2019 [37947.927424] RIP: 0010:dcn20_validate_bandwidth+0xc0/0xd0 [amdgpu] [37947.927426] Code: 5d 41 5c 41 5d e9 d0 fc ff ff f2 0f 11 85 70 21 00 00 31 d2 48 89 ee 4c 89 e7 e8 bb fc ff ff 41 89 c5 22 85 c8 1d 00 00 75 04 <0f> 0b eb 92 c6 85 c8 1d 00 00 00 41 89 c5 eb 86 0f 1f 44 00 00 41 [37947.927427] RSP: 0018:ffffbf3b41e67ad0 EFLAGS: 00010246 [37947.927428] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000017795 [37947.927429] RDX: 0000000000017794 RSI: ffff9e69fe96db40 RDI: 000000000002db40 [37947.927429] RBP: ffff9e695ce90000 R08: 0000000000000006 R09: 0000000000000000 [37947.927430] R10: ffff9e69eb8f0000 R11: 0000000100000001 R12: ffff9e69eb8f0000 [37947.927431] R13: 0000000000000001 R14: 0000000000000000 R15: ffff9e695ce90000 [37947.927432] FS: 00007f4774b06f00(0000) GS:ffff9e69fe940000(0000) knlGS:0000000000000000 [37947.927433] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [37947.927434] CR2: 00007f46bc3c5200 CR3: 00000007dc9ba000 CR4: 0000000000340ee0 [37947.927434] Call Trace: [37947.927508] dc_validate_global_state+0x25f/0x2d0 [amdgpu] [37947.927581] amdgpu_dm_atomic_check+0x5a1/0x7e0 [amdgpu] [37947.927597] drm_atomic_check_only+0x554/0x7e0 [drm] [37947.927611] ? drm_connector_list_iter_next+0x7d/0x90 [drm] [37947.927622] drm_atomic_commit+0x13/0x50 [drm] [37947.927634] drm_atomic_connector_commit_dpms+0xd7/0x100 [drm] [37947.927648] drm_mode_obj_set_property_ioctl+0x159/0x2b0 [drm] [37947.927661] ? drm_connector_set_obj_prop+0x90/0x90 [drm] [37947.927671] drm_connector_property_set_ioctl+0x39/0x60 [drm] [37947.927681] drm_ioctl_kernel+0xaa/0xf0 [drm] [37947.927691] drm_ioctl+0x208/0x390 [drm] [37947.927702] ? drm_connector_set_obj_prop+0x90/0x90 [drm] [37947.927750] amdgpu_drm_ioctl+0x49/0x80 [amdgpu] [37947.927754] do_vfs_ioctl+0x40e/0x670 [37947.927757] ? do_setitimer+0xde/0x230 [37947.927759] ksys_ioctl+0x5e/0x90 [37947.927761] __x64_sys_ioctl+0x16/0x20 [37947.927763] do_syscall_64+0x52/0x160 [37947.927766] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [37947.927768] RIP: 0033:0x7f477504e5d7 [37947.927769] Code: 00 00 90 48 8b 05 b9 78 0c 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 89 78 0c 00 f7 d8 64 89 01 48 [37947.927770] RSP: 002b:00007ffcbf170a38 EFLAGS: 00003246 ORIG_RAX: 0000000000000010 [37947.927771] RAX: ffffffffffffffda RBX: 00007ffcbf170a70 RCX: 00007f477504e5d7 [37947.927772] RDX: 00007ffcbf170a70 RSI: 00000000c01064ab RDI: 000000000000000d [37947.927773] RBP: 00000000c01064ab R08: 0000000000000000 R09: 00007f477471ad10 [37947.927773] R10: 00007f477471ad20 R11: 0000000000003246 R12: 000055962a2ad220 [37947.927774] R13: 000000000000000d R14: 0000559627814780 R15: 0000000000000000
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