https://bugzilla.kernel.org/show_bug.cgi?id=196789

Bug ID: 196789 Summary: WARNING: generic_reg_update_ex+0x112/0x180 [amdgpu on Vega 10] Product: Drivers Version: 2.5 Kernel Version: 4.13.0-rc5+ agd5f's branch amd-staging-drm-next Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: vedran@miletic.net Regression: No

I'm running https://cgit.freedesktop.org/~agd5f/linux/ branches amd-staging-4.12 and amd-staging-drm-next on Vega 10. I have 3 AOC DisplayPort 1080p monitors connected to Vega's 3 DisplayPorts, regular cables, nothing funky.

Upon boot, after amdgpu module loads, I get the following repeated a few times:

[ 356.814324] ------------[ cut here ]------------ [ 356.814346] WARNING: CPU: 0 PID: 1779 at drivers/gpu/drm/amd/amdgpu/../display/dc/dm_services.h:170 generic_reg_update_ex+0x112/0x180 [amdgpu] [ 356.814347] Modules linked in: bnep fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat ebtable_broute bridge stp llc ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack libcrc32c iptable_mangle iptable_raw iptable_security ebtable_filter ebtables ip6table_filter ip6_tables sunrpc vfat fat intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_codec_realtek snd_hda_codec_generic kvm snd_hda_codec_hdmi snd_hda_intel snd_hda_codec irqbypass crct10dif_pclmul snd_hda_core crc32_pclmul ghash_clmulni_intel intel_cstate [ 356.814359] snd_hwdep iTCO_wdt snd_seq iTCO_vendor_support intel_uncore ppdev mxm_wmi intel_rapl_perf snd_seq_device snd_pcm joydev hci_uart snd_timer mei_me snd pcspkr btbcm mei soundcore btqca btintel intel_pch_thermal i2c_i801 shpchp tpm_tis bluetooth tpm_tis_core tpm parport_pc ecdh_generic pinctrl_sunrisepoint wmi parport acpi_als rfkill pinctrl_intel video kfifo_buf intel_lpss_acpi industrialio intel_lpss acpi_pad binfmt_misc amdgpu i2c_algo_bit drm_kms_helper ttm drm crc32c_intel r8169 serio_raw mii i2c_hid hid_holtek_mouse [ 356.814372] CPU: 0 PID: 1779 Comm: gnome-shell Tainted: G W 4.13.0-rc5+ #1 [ 356.814372] Hardware name: MSI MS-7971/Z170-A PRO (MS-7971), BIOS 1.I0 05/02/2017 [ 356.814372] task: ffff8e9fc7d84d80 task.stack: ffffab9784ca4000 [ 356.814393] RIP: 0010:generic_reg_update_ex+0x112/0x180 [amdgpu] [ 356.814394] RSP: 0018:ffffab9784ca73d0 EFLAGS: 00010246 [ 356.814394] RAX: 0000000000000030 RBX: 0000000000000000 RCX: 0000000000000000 [ 356.814395] RDX: 0000000000000001 RSI: 0000000000003b1d RDI: ffff8e9fb6c6ad00 [ 356.814395] RBP: ffffab9784ca7448 R08: 0000000000000001 R09: ffffab9784ca73f0 [ 356.814396] R10: 0000000000000000 R11: 0000000000000002 R12: ffffab9784ca7478 [ 356.814396] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 [ 356.814397] FS: 00007fb66dfd6ac0(0000) GS:ffff8e9feec00000(0000) knlGS:0000000000000000 [ 356.814397] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 356.814398] CR2: 0000005fad735608 CR3: 000000083fba5000 CR4: 00000000003406f0 [ 356.814398] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 356.814398] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 356.814399] Call Trace: [ 356.814422] dce110_opp_power_on_regamma_lut+0x9e/0x130 [amdgpu] [ 356.814444] dce110_set_output_transfer_func+0x41/0x810 [amdgpu] [ 356.814457] ? amdgpu_mm_rreg+0xad/0x110 [amdgpu] [ 356.814480] ? dce_ipp_set_degamma+0x63/0x70 [amdgpu] [ 356.814501] dc_update_planes_and_stream+0x73f/0xbc0 [amdgpu] [ 356.814522] dc_commit_planes_to_stream+0x303/0x350 [amdgpu] [ 356.814546] amdgpu_dm_atomic_commit_tail+0x684/0xa40 [amdgpu] [ 356.814547] ? ww_mutex_unlock+0x26/0x30 [ 356.814569] ? dm_plane_helper_prepare_fb+0xd2/0x210 [amdgpu] [ 356.814573] ? drm_atomic_helper_wait_for_dependencies+0x68/0x160 [drm_kms_helper] [ 356.814575] commit_tail+0x3f/0x60 [drm_kms_helper] [ 356.814577] drm_atomic_helper_commit+0x106/0x110 [drm_kms_helper] [ 356.814599] amdgpu_dm_atomic_commit+0x90/0xa0 [amdgpu] [ 356.814606] drm_atomic_commit+0x4b/0x50 [drm] [ 356.814609] drm_atomic_helper_set_config+0x68/0x90 [drm_kms_helper] [ 356.814615] __drm_mode_set_config_internal+0x65/0x110 [drm] [ 356.814619] drm_mode_setcrtc+0x479/0x630 [drm] [ 356.814624] ? drm_mode_getcrtc+0x180/0x180 [drm] [ 356.814628] drm_ioctl_kernel+0x5d/0xb0 [drm] [ 356.814632] drm_ioctl+0x31b/0x3d0 [drm] [ 356.814635] ? drm_mode_getcrtc+0x180/0x180 [drm] [ 356.814648] amdgpu_drm_ioctl+0x4f/0x90 [amdgpu] [ 356.814657] do_vfs_ioctl+0xa5/0x600 [ 356.814658] SyS_ioctl+0x79/0x90 [ 356.814660] entry_SYSCALL_64_fastpath+0x1a/0xa5 [ 356.814660] RIP: 0033:0x7fb66b0da317 [ 356.814661] RSP: 002b:00007ffe01629138 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 356.814661] RAX: ffffffffffffffda RBX: 0000005fa93c5810 RCX: 00007fb66b0da317 [ 356.814662] RDX: 00007ffe01629170 RSI: 00000000c06864a2 RDI: 0000000000000008 [ 356.814662] RBP: 0000005fa9483400 R08: 0000000000000000 R09: 0000005fac585160 [ 356.814663] R10: 0000005faa95d990 R11: 0000000000000246 R12: 0000005facb5cc50 [ 356.814663] R13: 0000005fa9229cc0 R14: 0000005fa9229cc0 R15: 0000005fa9483400 [ 356.814664] Code: 8b 7f 18 89 da 48 8b 07 ff 50 38 48 8b 75 a0 65 48 33 34 25 28 00 00 00 89 d8 75 31 48 83 c4 50 5b 41 5a 41 5c 41 5d 41 5e 5d c3 <0f> ff eb ae 0f ff e9 36 ff ff ff 48 c7 c2 c0 96 50 c0 48 c7 c7 [ 356.814693] ---[ end trace 05f260ee1dfd7523 ]--