[Bug 289320] graphics/drm-66-kmod: Page fault on 16-CURRENT

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=289320

--- Comment #2 from Cy Schubert <cy@FreeBSD.org> ---
Kernel messages gleaned from the dump:

drmn0: could not load firmware image 'amdgpu/gc_11_0_1_mes.bin'
[drm ERROR :amdgpu_device_ip_early_init] early_init of IP block <mes_v11_0>
failed -19
drmn0: Fatal error during GPU init
drmn0: amdgpu: finishing device.
Fatal trap 12: page fault while in kernel mode
cpuid = 10; apic id = 0a
fault virtual address   = 0x18
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80a29ef4
stack pointer           = 0x28:0xfffffe023c7927e0
frame pointer           = 0x28:0xfffffe023c792800
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 47797 (kldload)
rdi: 0000000000000000 rsi: 0000000000000000 rdx: 0000000000000000
rcx: 0000000000000000  r8: fffffffffffffff0  r9: fffffffffffffff0
rax: 0000000000000001 rbx: fffff801505ee780 rbp: fffffe023c792800
r10: 000000000000007c r11: ffffffcffffffff5 r12: fffff801071e4200
r13: fffff801071e5a00 r14: 0000000000000000 r15: fffffe0265d39000
trap number             = 12
panic: page fault
cpuid = 10
time = 1757136418
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe023c792530
vpanic() at vpanic+0x136/frame 0xfffffe023c792660
panic() at panic+0x43/frame 0xfffffe023c7926c0
trap_pfault() at trap_pfault+0x3c9/frame 0xfffffe023c792710
calltrap() at calltrap+0x8/frame 0xfffffe023c792710
--- trap 0xc, rip = 0xffffffff80a29ef4, rsp = 0xfffffe023c7927e0, rbp =
0xfffffe023c792800 ---
vm_phys_fictitious_unreg_range() at vm_phys_fictitious_unreg_range+0xd4/frame
0xfffffe023c792800
unregister_fictitious_range() at unregister_fictitious_range+0xc/frame
0xfffffe023c792810
amdgpu_device_fini_hw() at amdgpu_device_fini_hw+0x117/frame 0xfffffe023c792850
amdgpu_driver_load_kms() at amdgpu_driver_load_kms+0x84/frame
0xfffffe023c792880
amdgpu_pci_probe() at amdgpu_pci_probe+0x29f/frame 0xfffffe023c7928d0
linux_pci_attach_device() at linux_pci_attach_device+0x5ac/frame
0xfffffe023c792930
device_attach() at device_attach+0x43d/frame 0xfffffe023c792980
bus_generic_driver_added() at bus_generic_driver_added+0x73/frame
0xfffffe023c7929a0
devclass_driver_added() at devclass_driver_added+0x29/frame 0xfffffe023c7929d0
devclass_add_driver() at devclass_add_driver+0x11e/frame 0xfffffe023c792a10
_linux_pci_register_driver() at _linux_pci_register_driver+0xcc/frame
0xfffffe023c792a40
amdgpu_evh() at amdgpu_evh+0x73/frame 0xfffffe023c792a50
module_register_init() at module_register_init+0x85/frame 0xfffffe023c792a80
linker_load_module() at linker_load_module+0xc0f/frame 0xfffffe023c792d80
kern_kldload() at kern_kldload+0x165/frame 0xfffffe023c792dd0
sys_kldload() at sys_kldload+0x59/frame 0xfffffe023c792e00
amd64_syscall() at amd64_syscall+0x126/frame 0xfffffe023c792f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe023c792f30
--- syscall (304, FreeBSD ELF64, kldload), rip = 0x1105f4e7efca, rsp =
0x1105f260d758, rbp = 0x1105f260dcd0 ---
Uptime: 29m14s
Dumping 4069 out of 96010 MB:

-19 == ENODEV, operation not supported by device. This worked earlier in the
day prior to switching the FreeBSD version from 15-PRERELEASE to 16-CURRENT.

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