[Bug 276985] crash in LinuxKPI/drm

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=276985

--- Comment #15 from feh@fehcom.de ---
New environment:

1. I've taken the FreeBSD 14.0 and installed the very same NVME on a new
maschine with mostly identical CPU.

 - Previous: AMD Ryzen 5 5500u, Model 60h-6fh, Patch Level: 8608103, CezanneCPU
05
 - New:      AMD Ryzen 7 5700U, Model 60h-6Fh, Patch Level: 8608103, CezanneCPU
03, AGESA CezannePI 1003c

2. I've upgraded from FreeBSD 14.0 to 14.1:
FreeBSD amr5 14.1-RELEASE FreeBSD 14.1-RELEASE releng/14.1-n267679-10e31f0946d8
GENERIC amd64

Since the hardware swop, crashes are less frequent. However, they again point
to the same assembler routine:

panic: page fault
cpuid = 0
time = 1718182385
KDB: stack backtrace:
#0 0xffffffff80b7fbfd at kdb_backtrace+0x5d
#1 0xffffffff80b32961 at vpanic+0x131
#2 0xffffffff80b32823 at panic+0x43
#3 0xffffffff80fff91b at trap_fatal+0x40b
#4 0xffffffff80fff966 at trap_pfault+0x46
#5 0xffffffff80fd6a48 at calltrap+0x8
#6 0xffffffff83feeb95 at dma_fence_signal+0x35
#7 0xffffffff840231b8 at amdgpu_fence_process+0xe8
#8 0xffffffff840af1cc at gfx_v9_0_eop_irq+0xcc
#9 0xffffffff8402e590 at amdgpu_irq_dispatch+0xb0
#10 0xffffffff8402da30 at amdgpu_ih_process+0xb0
#11 0xffffffff8402e190 at amdgpu_irq_handler+0x20
#12 0xffffffff80da1059 at lkpi_irq_handler+0x29
#13 0xffffffff80af0737 at ithread_loop+0x257
#14 0xffffffff80aecd1f at fork_exit+0x7f
#15 0xffffffff80fd7aae at fork_trampoline+0xe
Uptime: 1h20m44s
Dumping 1163 out of 15712 MB:..2%..12%..21%..31%..42%..51%..61%..71%..82%..91%

__curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:57
57              __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct
pcpu,

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