[Bug 259670] graphics/drm-kmod: sporadic GPU hang with i915kms

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=259670

stephan@lichtenauer.co.za changed:

           What    |Removed                     |Added
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                 CC|                            |stephan@lichtenauer.co.za

--- Comment #17 from stephan@lichtenauer.co.za ---
Similar issue on my notebook with i915 I think:

Reading symbols from /boot/kernel/kernel...
Reading symbols from /usr/lib/debug//boot/kernel/kernel.debug...

Unread portion of the kernel message buffer:
drmn0: [drm] Resetting rcs0 for invalid CSB event
drmn0: [drm] GPU HANG: ecode 11:1:f1973ffc, in Xwayland [100909]


Fatal trap 12: page fault while in kernel mode
cpuid = 5; apic id = 05
fault virtual address   = 0x61
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff80f52807
stack pointer           = 0x28:0xfffffe00e288acc0
frame pointer           = 0x28:0xfffffe00e288ad00
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         = 0 (linuxkpi_short_wq_0)
trap number             = 12
panic: page fault
cpuid = 5
time = 1663856399
KDB: stack backtrace:
#0 0xffffffff80c69465 at kdb_backtrace+0x65
#1 0xffffffff80c1bb1f at vpanic+0x17f
#2 0xffffffff80c1b993 at panic+0x43
#3 0xffffffff810afdf5 at trap_fatal+0x385
#4 0xffffffff810afe4f at trap_pfault+0x4f
#5 0xffffffff81087528 at calltrap+0x8
#6 0xffffffff80f528fd at kmem_free+0x2d
#7 0xffffffff85b7259d at __i915_gpu_coredump_free+0x12d
#8 0xffffffff85b3d5a9 at execlists_capture_work+0xa9
#9 0xffffffff80e6e533 at linux_work_fn+0xe3
#10 0xffffffff80c7da41 at taskqueue_run_locked+0x181
#11 0xffffffff80c7ed52 at taskqueue_thread_loop+0xc2
#12 0xffffffff80bd8a5e at fork_exit+0x7e
#13 0xffffffff8108859e at fork_trampoline+0xe
Uptime: 9h15m46s
Dumping 2321 out of 32484 MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%

__curthread () at /usr/src/sys/amd64/include/pcpu_aux.h:55
55              __asm("movq %%gs:%P1,%0" : "=r" (td) : "n" (offsetof(struct
pcpu,


----

FreeBSD 13.1-RELEASE releng/13.1-n250148-fc952ac2212 GENERIC

drm-510-kmod-5.10.113_6        DRM drivers modules
drm-kmod-20220907_1            Metaport of DRM modules for the linuxkpi-based
KMS components
...

Can provide additional details if necessary.

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