Nouveau crash on 5.15 kernel.
I'm having an issue with 5.15, my machine does not boot. I can see this stack trace in the journal:
gru 03 18:56:53 laptop kernel: ---[ end trace 7552dd8d8b61b569 ]---
gru 03 18:56:53 laptop kernel: </TASK>
gru 03 18:56:53 laptop kernel: R13: 0000562e341874c0 R14: 0000000000000007 R15: 0000562e34177b90
gru 03 18:56:53 laptop kernel: R10: 0000562b56ff3d77 R11: 0000000000000246 R12: 00007fdce282932c
gru 03 18:56:53 laptop kernel: RBP: 0000562e34a80d00 R08: 0000562e341c7e70 R09: 00007ffd3a660d66
gru 03 18:56:53 laptop kernel: RDX: 00007fdce282932c RSI: 000000000046e106 RDI: 0000562e34a80d00
gru 03 18:56:53 laptop kernel: RAX: ffffffffffffffda RBX: 0000562e34174840 RCX: 00007fdce26d60fe
gru 03 18:56:53 laptop kernel: RSP: 002b:00007ffd3a664db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000af
gru 03 18:56:53 laptop kernel: Code: 48 8b 0d 7d 1d 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 af 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4a 1d 0c 00 f7 d8 64 89 01 48
gru 03 18:56:53 laptop kernel: RIP: 0033:0x7fdce26d60fe
gru 03 18:56:53 laptop kernel: entry_SYSCALL_64_after_hwframe+0x44/0xae
gru 03 18:56:53 laptop kernel: do_syscall_64+0x3b/0x90
gru 03 18:56:53 laptop kernel: __do_sys_init_module+0x11d/0x180
gru 03 18:56:53 laptop kernel: do_init_module+0x5c/0x270
gru 03 18:56:53 laptop kernel: ? kmem_cache_alloc_trace+0x15b/0x2a0
gru 03 18:56:53 laptop kernel: do_one_initcall+0x44/0x1d0
gru 03 18:56:53 laptop kernel: ? 0xffffffffc0805000
gru 03 18:56:53 laptop kernel: driver_register+0x8f/0xe0
gru 03 18:56:53 laptop kernel: bus_add_driver+0x12b/0x1e0
gru 03 18:56:53 laptop kernel: bus_for_each_dev+0x64/0x90
gru 03 18:56:53 laptop kernel: ? __device_attach_driver+0xe0/0xe0
gru 03 18:56:53 laptop kernel: ? __device_attach_driver+0xe0/0xe0
gru 03 18:56:53 laptop kernel: __driver_attach+0xc0/0x1c0
gru 03 18:56:53 laptop kernel: driver_probe_device+0x1e/0x90
gru 03 18:56:53 laptop kernel: __driver_probe_device+0xfe/0x180
gru 03 18:56:53 laptop kernel: really_probe+0x1f5/0x3f0
gru 03 18:56:53 laptop kernel: pci_device_probe+0xd9/0x190
gru 03 18:56:53 laptop kernel: ? __cond_resched+0x16/0x40
gru 03 18:56:53 laptop kernel: local_pci_probe+0x45/0x80
gru 03 18:56:53 laptop kernel: ? __pm_runtime_resume+0x58/0x80
gru 03 18:56:53 laptop kernel: nouveau_drm_probe+0x13e/0x1b0 [nouveau]
gru 03 18:56:53 laptop kernel: drm_dev_register+0x18c/0x1b0 [drm]
gru 03 18:56:53 laptop kernel: drm_modeset_register_all+0x5b/0x70 [drm]
gru 03 18:56:53 laptop kernel: drm_connector_register_all+0x3e/0xf0 [drm]
gru 03 18:56:53 laptop kernel: drm_connector_register.part.0+0x68/0xb0 [drm]
gru 03 18:56:53 laptop kernel: nouveau_connector_late_register+0x12/0x50 [nouveau]
gru 03 18:56:53 laptop kernel: nouveau_backlight_init+0x23e/0x420 [nouveau]
gru 03 18:56:53 laptop kernel: <TASK>
gru 03 18:56:53 laptop kernel: Call Trace:
gru 03 18:56:53 laptop kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
gru 03 18:56:53 laptop kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
gru 03 18:56:53 laptop kernel: CR2: 0000560a9c741000 CR3: 000000010afce005 CR4: 00000000003706e0
gru 03 18:56:53 laptop kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
gru 03 18:56:53 laptop kernel: FS: 00007fdce1a8bb40(0000) GS:ffff956c2dd80000(0000) knlGS:0000000000000000
gru 03 18:56:53 laptop kernel: R13: ffff9568c11cd600 R14: ffff9568cb834090 R15: ffffffffc0719ce0
gru 03 18:56:53 laptop kernel: R10: ffffb5910068b908 R11: ffffffff90d46028 R12: ffff9568cb834000
gru 03 18:56:53 laptop kernel: RBP: ffffb5910068bb41 R08: 0000000000000000 R09: ffffb5910068b910
gru 03 18:56:53 laptop kernel: RDX: ffff956c2dda0a08 RSI: 0000000000000001 RDI: ffff956c2dda0a00
gru 03 18:56:53 laptop kernel: RAX: 0000000000000024 RBX: ffffb5910068bb24 RCX: 0000000000000027
gru 03 18:56:53 laptop kernel: RSP: 0018:ffffb5910068bad8 EFLAGS: 00010296
gru 03 18:56:53 laptop kernel: Code: 5d 41 5e 41 5f c3 49 c7 c4 f4 ff ff ff 5b 5d 4c 89 e0 41 5c 41 5d 41 5e 41 5f c3 48 89 ee 48 c7 c7 c1 06 65 90 e8 e4 2e 4e 00 <0f> 0b 41 c7 44 24 10 01 00 00 00 e9 bc fe ff ff 4c 63 e3 4c 89 f7
gru 03 18:56:53 laptop kernel: RIP: 0010:backlight_device_register+0x226/0x250
gru 03 18:56:53 laptop kernel: Hardware name: Dell Inc. Precision 7510/0M1YNP, BIOS 1.24.3 10/13/2021
gru 03 18:56:53 laptop kernel: CPU: 6 PID: 476 Comm: systemd-udevd Not tainted 5.15.6-100.fc34.x86_64 #1
gru 03 18:56:53 laptop kernel: Modules linked in: nouveau(+) hid_logitech_hidpp drm_ttm_helper ttm i2c_algo_bit drm_kms_helper rtsx_pci_sdmmc mmc_core mxm_wmi cec crct10dif_pclmul crc32_pclmul crc32c_intel drm e1000e ghash_clmulni_inte>
gru 03 18:56:53 laptop kernel: WARNING: CPU: 6 PID: 476 at drivers/video/backlight/backlight.c:420 backlight_device_register+0x226/0x250
gru 03 18:56:53 laptop kernel: nv_backlight: invalid backlight type
gru 03 18:56:53 laptop kernel: ------------[ cut here ]------------
Good kernel: 5.14.12 Bad kernels: 5.15.4, 5.15.5, 5.15.6
The stack trace is from 5.15.6 boot.