[Bug 107261] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 1us * 10 tries - optc1_lock line:628

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107261

            Bug ID: 107261
           Summary: [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT
                    timeout 1us * 10 tries - optc1_lock line:628
           Product: DRI
           Version: DRI git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: pmenzel+bugs.freedesktop at molgen.mpg.de

Created attachment 140664
  --> https://bugs.freedesktop.org/attachment.cgi?id=140664&action=edit
Linux 4.18-rc5+ messages

On a MSI B350M MORTAR with Linux 4.18-rc5+ and Debian Sid/unstable with GNOME I
get the error below.

```
$ git log --oneline -1
30b06abfb92b (HEAD -> master, origin/master, origin/HEAD) Merge tag
'pinctrl-v4.18-3' of
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
$ git describe --dirty
v4.18-rc5-36-g30b06abfb92b
$ sudo dmesg
[…]
[  171.571430] [drm:generic_reg_wait [amdgpu]] *ERROR* REG_WAIT timeout 1us *
10 tries - optc1_lock line:628
[  171.571485] WARNING: CPU: 2 PID: 917 at
drivers/gpu/drm/amd/amdgpu/../display/dc/dc_helper.c:254
generic_reg_wait+0xe7/0x160 [amdgpu]
[  171.571486] Modules linked in: fuse nls_ascii amdkfd nls_cp437 vfat fat
wmi_bmof ppdev amdgpu edac_mce_amd ccp rng_core chash snd_hda_codec_realtek
efi_pstore gpu_sched kvm ttm irqbypass snd_hda_codec_generic snd_hda_codec_hdmi
crct10dif_pclmul sp5100_tco crc32_pclmul pcspkr snd_hda_intel i2c_piix4
ghash_clmulni_intel drm_kms_helper snd_hda_codec snd_hda_core efivars sg
snd_hwdep k10temp r8169 snd_pcm drm mii snd_timer snd i2c_algo_bit soundcore
parport_pc wmi parport video button acpi_cpufreq efivarfs ip_tables x_tables
autofs4 ext4 crc16 mbcache jbd2 fscrypto dm_crypt dm_mod raid10 raid456
libcrc32c crc32c_generic async_raid6_recov async_memcpy async_pq async_xor xor
async_tx raid6_pq raid1 raid0 multipath linear md_mod sd_mod evdev hid_generic
usbhid hid crc32c_intel ahci libahci xhci_pci aesni_intel
[  171.571521]  aes_x86_64 xhci_hcd crypto_simd cryptd glue_helper libata
usbcore scsi_mod gpio_amdpt gpio_generic
[  171.571527] CPU: 2 PID: 917 Comm: gnome-shell Not tainted 4.18.0-rc5+ #1
[  171.571528] Hardware name: MSI MS-7A37/B350M MORTAR (MS-7A37), BIOS 1.F0
04/27/2018
[  171.571569] RIP: 0010:generic_reg_wait+0xe7/0x160 [amdgpu]
[  171.571569] Code: 44 24 58 8b 54 24 48 89 de 44 89 4c 24 08 48 8b 4c 24 50
48 c7 c7 10 2e b5 c0 e8 f4 e1 ac ff 83 7d 20 01 44 8b 4c 24 08 74 02 <0f> 0b 48
83 c4 10 44 89 c8 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 0f 
[  171.571585] RSP: 0018:ffffb2f003d1f920 EFLAGS: 00010297
[  171.571587] RAX: 0000000000000000 RBX: 0000000000000001 RCX:
0000000000000000
[  171.571587] RDX: 0000000000000000 RSI: ffff9d185ec96738 RDI:
ffff9d185ec96738
[  171.571588] RBP: ffff9d1843a49800 R08: 0000000000000392 R09:
0000000000000001
[  171.571588] R10: 0000000000000000 R11: ffffffffb4fcaf4d R12:
000000000000000b
[  171.571589] R13: 000000000000504d R14: 0000000000000100 R15:
0000000000000001
[  171.571590] FS:  00007f7488a34ac0(0000) GS:ffff9d185ec80000(0000)
knlGS:0000000000000000
[  171.571591] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  171.571592] CR2: 000001b1baab4488 CR3: 00000003dc648000 CR4:
00000000003406e0
[  171.571592] Call Trace:
[  171.571640]  optc1_lock+0xa0/0xb0 [amdgpu]
[  171.571684]  dcn10_pipe_control_lock.part.28+0x4a/0x70 [amdgpu]
[  171.571728]  dcn10_apply_ctx_for_surface+0xee/0x1210 [amdgpu]
[  171.571731]  ? _cond_resched+0x15/0x30
[  171.571774]  ? hubbub1_verify_allow_pstate_change_high+0xdd/0x180 [amdgpu]
[  171.571817]  ? dcn10_verify_allow_pstate_change_high+0x1d/0x240 [amdgpu]
[  171.571859]  ? dcn10_set_bandwidth+0x275/0x2d0 [amdgpu]
[  171.571900]  dc_commit_state+0x253/0x550 [amdgpu]
[  171.571940]  ? set_freesync_on_streams.part.6+0x4d/0x250 [amdgpu]
[  171.571979]  ? mod_freesync_set_user_enable+0x11f/0x150 [amdgpu]
[  171.572023]  amdgpu_dm_atomic_commit_tail+0x37c/0xd70 [amdgpu]
[  171.572058]  ? amdgpu_bo_pin_restricted+0xd6/0x300 [amdgpu]
[  171.572060]  ? _cond_resched+0x15/0x30
[  171.572061]  ? wait_for_completion_timeout+0x3b/0x1a0
[  171.572063]  ? refcount_inc+0x5/0x30
[  171.572070]  commit_tail+0x3d/0x70 [drm_kms_helper]
[  171.572075]  drm_atomic_helper_commit+0xb4/0x120 [drm_kms_helper]
[  171.572087]  drm_atomic_connector_commit_dpms+0xdb/0x100 [drm]
[  171.572097]  drm_mode_obj_set_property_ioctl+0x174/0x270 [drm]
[  171.572107]  ? drm_mode_obj_find_prop_id+0x40/0x40 [drm]
[  171.572116]  drm_ioctl_kernel+0xa1/0xf0 [drm]
[  171.572126]  drm_ioctl+0x1fc/0x390 [drm]
[  171.572135]  ? drm_mode_obj_find_prop_id+0x40/0x40 [drm]
[  171.572138]  ? eventfd_read+0xed/0x2a0
[  171.572171]  amdgpu_drm_ioctl+0x49/0x80 [amdgpu]
[  171.572174]  do_vfs_ioctl+0xa4/0x620
[  171.572176]  ksys_ioctl+0x60/0x90
[  171.572178]  ? ksys_read+0x9c/0xb0
[  171.572179]  __x64_sys_ioctl+0x16/0x20
[  171.572182]  do_syscall_64+0x55/0xe0
[  171.572184]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  171.572186] RIP: 0033:0x7f749a661067
[  171.572186] Code: b3 66 90 48 8b 05 21 7e 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 f1 7d 0c 00 f7 d8 64 89 01 48 
[  171.572206] RSP: 002b:00007fff3a256808 EFLAGS: 00000246 ORIG_RAX:
0000000000000010
[  171.572207] RAX: ffffffffffffffda RBX: 0000557309136180 RCX:
00007f749a661067
[  171.572208] RDX: 00007fff3a256840 RSI: 00000000c01864ba RDI:
000000000000000b
[  171.572209] RBP: 00007fff3a256840 R08: 0000000000000000 R09:
0000000000000002
[  171.572209] R10: 0000557309132cd8 R11: 0000000000000246 R12:
00000000c01864ba
[  171.572210] R13: 000000000000000b R14: 00007fff3a256a40 R15:
00007f749bfb6bb0
[  171.572212] ---[ end trace db9d21cbef0f5346 ]---
```

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