amdgpu dumping during boot in picasso

[Ken Moffat]

I recently upgraded the mobo in an old machine to now use a Ryzen 5
3400G (Picasso APU). With 5.3 kernels it seems to be running well, but
an unrelated issue caused me to look at dmesg: it dumps during boot,
and then there may be related dumps later, possibly from resuming from
suspend or hibernation. The earliest usable kernel is 5.0 (Picasso is
too new for original 4.19 which doesn't load amdgpu) and it turns out
that all kernels up to and including linus's tree of a few hours ago
do this. From linus's tree:

[    2.445827] [drm] DM_PPLIB: values for F clock
[    2.445828] [drm] DM_PPLIB:   0 in kHz, 3099 in mV
[    2.445829] [drm] DM_PPLIB:   0 in kHz, 3099 in mV
[    2.445829] [drm] DM_PPLIB:   0 in kHz, 3099 in mV
[    2.445830] [drm] DM_PPLIB:   1500000 in kHz, 4399 in mV
[    2.445839] ------------[ cut here ]------------
[    2.445914] WARNING: CPU: 5 PID: 287 at
drivers/gpu/drm/amd/amdgpu/../display/dc/calcs/dcn_calcs.c:1464
dcn_bw_update_from_pplib+0xa1/0x2e0 [amdgpu]
[    2.445914] Modules linked in: amdgpu(+) k10temp mfd_core gpu_sched ttm
[    2.445920] CPU: 5 PID: 287 Comm: udevd Tainted: G                T
5.4.0-rc3-00124-g7571438a4868 #28
[    2.445921] Hardware name: Gigabyte Technology Co., Ltd. A320M-S2H
V2/A320M-S2H V2-CF, BIOS F31 04/15/2019
[    2.446006] RIP: 0010:dcn_bw_update_from_pplib+0xa1/0x2e0 [amdgpu]
[    2.446008] Code: 24 10 85 c9 74 24 8d 71 ff 48 8d 44 24 14 48 8d
54 f4 1c eb 0d 48 83 c0 08 48 39 d0 0f 84 3e 01 00 00 44 8b 00 45 85
c0 75 eb <0f> 0b e8 c8 4c b6 c9 48 89 ef 4c 89 e2 be 04 00 00 00 e8 28
8d fe
[    2.446009] RSP: 0018:ffffb60480533638 EFLAGS: 00010246
[    2.446010] RAX: ffffb6048053364c RBX: ffffa17c0a040000 RCX: 0000000000000004
[    2.446011] RDX: ffffb6048053366c RSI: 0000000000000003 RDI: ffffffff8b008d08
[    2.446012] RBP: ffffa17c0bb03500 R08: 0000000000000000 R09: ffffffff8b7963b4
[    2.446013] R10: 0000000000000353 R11: 000000000002e208 R12: ffffb604805336d8
[    2.446013] R13: 0000000000000001 R14: 000000000000000a R15: ffffa17c0bb03500
[    2.446015] FS:  00007fb95ab5c780(0000) GS:ffffa17c10f40000(0000)
knlGS:0000000000000000
[    2.446015] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    2.446016] CR2: 00007fff52ec2348 CR3: 000000040d330000 CR4: 00000000003406e0
[    2.446017] Call Trace:
[    2.446022]  ? preempt_count_add+0x44/0xa0
[    2.446108]  dcn10_create_resource_pool+0x832/0xb50 [amdgpu]
[    2.446177]  ? get_smu_clock_info_v3_1+0x48/0x70 [amdgpu]
[    2.446241]  dc_create_resource_pool+0xd5/0x140 [amdgpu]
[    2.446308]  ? dal_gpio_service_create+0x84/0x100 [amdgpu]
[    2.446371]  dc_create+0x255/0x730 [amdgpu]
[    2.446374]  ? lock_timer_base+0x5c/0x80
[    2.446376]  ? apic_timer_interrupt+0xa/0x20
[    2.446378]  ? kmem_cache_alloc_trace+0x3a/0x1e0
[    2.446443]  amdgpu_dm_init+0x161/0x210 [amdgpu]
[    2.446509]  ?
phm_wait_for_register_unequal.part.0+0x4b/0x80 [amdgpu]
[    2.446574]  dm_hw_init+0x9/0x20 [amdgpu]
[    2.446638]  amdgpu_device_init.cold+0x117a/0x1325 [amdgpu]
[    2.446692]  amdgpu_driver_load_kms+0x55/0x110 [amdgpu]
[    2.446695]  drm_dev_register+0x13c/0x180
[    2.446748]  amdgpu_pci_probe+0xd4/0x130 [amdgpu]
[    2.446749]  ? __pm_runtime_resume+0x54/0x70
[    2.446751]  pci_device_probe+0xc6/0x130
[    2.446753]  really_probe+0xfc/0x2d0
[    2.446754]  driver_probe_device+0x59/0xd0
[    2.446756]  device_driver_attach+0x68/0x70
[    2.446757]  __driver_attach+0x54/0xc0
[    2.446758]  ? device_driver_attach+0x70/0x70
[    2.446758]  bus_for_each_dev+0x87/0xd0
[    2.446760]  bus_add_driver+0x18b/0x1e0
[    2.446761]  driver_register+0x67/0xb0
[    2.446762]  ? 0xffffffffc072d000
[    2.446763]  do_one_initcall+0x41/0x21f
[    2.446765]  ? kmem_cache_alloc_trace+0x3a/0x1e0
[    2.446767]  do_init_module+0x59/0x210
[    2.446769]  load_module+0x20f5/0x2420
[    2.446770]  ? frob_text.isra.0+0x20/0x20
[    2.446772]  __do_sys_finit_module+0xfd/0x120
[    2.446774]  do_syscall_64+0x43/0x110
[    2.446775]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[    2.446777] RIP: 0033:0x7fb95acbede9
[    2.446778] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00
00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24
08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 77 a0 0c 00 f7 d8 64 89
01 48
[    2.446779] RSP: 002b:00007fff52ec1568 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[    2.446780] RAX: ffffffffffffffda RBX: 0000000000e78450 RCX: 00007fb95acbede9
[    2.446781] RDX: 0000000000000000 RSI: 00007fb95ada084d RDI: 000000000000000d
[    2.446781] RBP: 0000000000020000 R08: 0000000000000000 R09: 00007fff52ec1ad0
[    2.446782] R10: 000000000000000d R11: 0000000000000246 R12: 00007fb95ada084d
[    2.446782] R13: 0000000000000000 R14: 0000000000e69c40 R15: 0000000000e78450
[    2.446783] ---[ end trace ba451112660fe31d ]---

Full dmesg and config available if required.

Any ideas, please ?

Äen