Re: nouveau 0000:01:00.0: drm_WARN_ON(!found_head)

From: Borislav Petkov
Date: Tue Dec 12 2023 - 17:44:32 EST

On Sat, Nov 11, 2023 at 01:03:23PM +0100, Borislav Petkov wrote:
> Hi,
>
> this is ontop of Linus' tree from the 4th (lemme know if I should try
> the latest) on one of my test boxes:
>
> nouveau 0000:01:00.0: vgaarb: deactivate vga console
> Console: switching to colour dummy device 80x25
> nouveau 0000:01:00.0: NVIDIA GT218 (0a8280b1)
> CE: hpet increased min_delta_ns to 20115 nsec
> nouveau 0000:01:00.0: bios: version 70.18.49.00.00
> nouveau 0000:01:00.0: fb: 1024 MiB DDR3
> nouveau 0000:01:00.0: DRM: VRAM: 1024 MiB
> nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
> nouveau 0000:01:00.0: DRM: TMDS table version 2.0
> nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
> ------------[ cut here ]------------
> nouveau 0000:01:00.0: drm_WARN_ON(!found_head)
> WARNING: CPU: 4 PID: 786 at drivers/gpu/drm/nouveau/dispnv50/disp.c:2731 nv50_display_init+0x28c/0x4f0 [nouveau]
> Modules linked in: nouveau(+) drm_ttm_helper ttm video drm_exec drm_gpuvm gpu_sched drm_display_helper wmi
> CPU: 4 PID: 786 Comm: systemd-udevd Not tainted 6.6.0+ #1

This still fires on -rc5:

[ 4.577348] nouveau 0000:01:00.0: vgaarb: deactivate vga console
[ 4.584482] Console: switching to colour dummy device 80x25
[ 4.590120] nouveau 0000:01:00.0: NVIDIA GT218 (0a8280b1)
[ 4.718171] nouveau 0000:01:00.0: bios: version 70.18.49.00.00
[ 4.724788] nouveau 0000:01:00.0: fb: 1024 MiB DDR3
[ 6.047984] nouveau 0000:01:00.0: DRM: VRAM: 1024 MiB
[ 6.053031] nouveau 0000:01:00.0: DRM: GART: 1048576 MiB
[ 6.058340] nouveau 0000:01:00.0: DRM: TMDS table version 2.0
[ 6.065892] nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies
[ 6.078375] ------------[ cut here ]------------
[ 6.082994] nouveau 0000:01:00.0: drm_WARN_ON(!found_head)
[ 6.083023] WARNING: CPU: 3 PID: 779 at drivers/gpu/drm/nouveau/dispnv50/disp.c:2731 nv50_display_init+0x28c/0x4f0 [nouve
au]
[ 6.099800] Modules linked in: nouveau(+) drm_ttm_helper ttm video drm_exec drm_gpuvm gpu_sched drm_display_helper wmi
[ 6.110490] CPU: 3 PID: 779 Comm: systemd-udevd Not tainted 6.7.0-rc5+ #2
[ 6.117272] Hardware name: MICRO-STAR INTERNATIONAL CO.,LTD MS-7599/870-C45 (MS-7599), BIOS V1.15 03/04/2011
[ 6.127087] RIP: 0010:nv50_display_init+0x28c/0x4f0 [nouveau]
[ 6.132915] Code: 4c 8b 6f 50 4d 85 ed 75 03 4c 8b 2f e8 cd 16 37 e1 48 c7 c1 4c 55 2d a0 48 89 c6 4c 89 ea 48 c7 c7 42 5
5 2d a0 e8 44 5a e8 e0 <0f> 0b 48 8b 43 08 49 39 c6 48 8d 58 f8 0f 85 41 ff ff ff 48 8d 7c
[ 6.151660] RSP: 0018:ffffc9000036ba98 EFLAGS: 00010286
[ 6.156885] RAX: 000000000000002e RBX: ffff8881009fbc00 RCX: 0000000000000000
[ 6.164013] RDX: 0000000000000002 RSI: ffffc9000036b9b0 RDI: 0000000000000001
[ 6.171141] RBP: ffff888103fc8ad0 R08: ffff888136ffdfe8 R09: 0000000000000058
[ 6.178263] R10: 000000000000027a R11: ffff888136401b70 R12: ffff888103fc8800
[ 6.185393] R13: ffff888100abddf0 R14: ffff888103fc8ab0 R15: 0000000000000000
[ 6.192521] FS: 00007fdc144858c0(0000) GS:ffff88812f4c0000(0000) knlGS:0000000000000000
[ 6.200601] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 6.206339] CR2: 000055676cc01000 CR3: 0000000103f6c000 CR4: 00000000000006f0
[ 6.213466] Call Trace:
[ 6.215921] <TASK>
[ 6.218015] ? __warn+0x96/0x160
[ 6.221240] ? nv50_display_init+0x28c/0x4f0 [nouveau]
[ 6.226461] ? report_bug+0x1ec/0x200
[ 6.230119] ? handle_bug+0x3c/0x70
[ 6.233611] ? exc_invalid_op+0x1f/0x90
[ 6.237442] ? asm_exc_invalid_op+0x16/0x20
[ 6.241622] ? nv50_display_init+0x28c/0x4f0 [nouveau]
[ 6.246840] ? nv50_display_init+0x28c/0x4f0 [nouveau]
[ 6.252058] ? sched_set_fifo+0x46/0x60
[ 6.255897] nouveau_display_init+0xa0/0xd0 [nouveau]
[ 6.261031] nouveau_drm_device_init+0x42a/0x990 [nouveau]
[ 6.266604] nouveau_drm_probe+0x105/0x240 [nouveau]
[ 6.271651] ? __pm_runtime_resume+0x68/0xa0
[ 6.275920] pci_device_probe+0xaa/0x140
[ 6.279840] really_probe+0xc2/0x2d0
[ 6.283411] __driver_probe_device+0x73/0x120
[ 6.287761] driver_probe_device+0x2c/0xb0
[ 6.291851] __driver_attach+0xa0/0x150
[ 6.295683] ? __device_attach_driver+0xc0/0xc0
[ 6.300205] bus_for_each_dev+0x67/0xa0
[ 6.304044] bus_add_driver+0x10e/0x210
[ 6.307874] driver_register+0x5c/0x120
[ 6.311706] ? 0xffffffffa0336000
[ 6.315017] do_one_initcall+0x44/0x200
[ 6.318851] ? kmalloc_trace+0x37/0xc0
[ 6.322595] do_init_module+0x64/0x230
[ 6.326344] init_module_from_file+0x8d/0xd0
[ 6.330609] idempotent_init_module+0x15a/0x210
[ 6.335136] __x64_sys_finit_module+0x67/0xb0
[ 6.339490] do_syscall_64+0x41/0xf0
[ 6.343066] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 6.348118] RIP: 0033:0x7fdc14947ee9
[ 6.351691] Code: 08 44 89 e0 5b 41 5c c3 66 0f 1f 84 00 00 00 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 f7 ee 0e 00 f7 d8 64 89 01 48
[ 6.370433] RSP: 002b:00007ffe228d74b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 6.377993] RAX: ffffffffffffffda RBX: 000055676cc11d60 RCX: 00007fdc14947ee9
[ 6.385116] RDX: 0000000000000000 RSI: 00007fdc14ae7e2d RDI: 0000000000000012
[ 6.392245] RBP: 0000000000020000 R08: 0000000000000000 R09: 000055676cc0f170
[ 6.399368] R10: 0000000000000012 R11: 0000000000000246 R12: 00007fdc14ae7e2d
[ 6.406496] R13: 0000000000000000 R14: 000055676cc0c230 R15: 000055676cc11d60
[ 6.413621] </TASK>
[ 6.415803] ---[ end trace 0000000000000000 ]---
[ 6.420697] [drm] Initialized nouveau 1.4.0 20120801 for 0000:01:00.0 on minor 0
[ 6.469632] fbcon: nouveaudrmfb (fb0) is primary device
[ 6.548495] Console: switching to colour frame buffer device 210x65
[ 6.563870] nouveau 0000:01:00.0: [drm] fb0: nouveaudrmfb frame buffer device
[ 6.660166] EXT4-fs (sda5): mounted filesystem 6fe02972-f7b5-4f2d-9796-e78fe2d6b511 ro with ordered data mode. Quota mode: disabled.
[ 7.226100] acpi_cpufreq: overriding BIOS provided _PSD data
[ 7.609728] kvm_amd: Nested Virtualization enabled
[ 7.614585] kvm_amd: Nested Paging enabled
[ 7.618825] kvm_amd: LBR virtualization supported
[ 7.656480] MCE: In-kernel MCE decoding enabled.

--
Regards/Gruss,
Boris.

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