[Bug 297250] graphics/drm-66-kmod (amdgpu): panic: Assertion td->td_lkpi_task == NULL

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D297250

[email protected] changed:

           What    |Removed                     |Added
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                 CC|                            |[email protected]

--- Comment #3 from [email protected] ---
I have hit the same issue on "CPU: 12th Gen Intel(R) Core(TM) i5-1235U
(2496.00-MHz K8-class CPU)"

The old version is:
 main-n287169-6d9bc46cd7fc: Wed Jul  1 16:51:31 PDT 2026=20=20=20=20
root@ptavv:/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64
A significant difference is that I was running 612, not 66. I was surprised
that the new source drm-66-kmod file built with the new kernel sources works
fine with the month-old kernel. I had not touched world when booting the old
kernel. It booted normally, though with several ugly looking errors which I=
 do
not believe were related, but tied to starting IPv6 and Bluetooth. I'm gues=
sing
BZ has updated things in this area.

Just now I rebuilt drm-612-kmod reinstalled it and rebooted. I It booted
normally, though with several ugly looking errors which I do not believe we=
re
related, but tied to starting IPv6 and Bluetooth. I'm guessing BZ has updat=
ed
things in this area.t booted fine and Mate came up fine. (IPv6 also is
working.)

Here is the crash:
drmn0: successfully loaded firmware image 'i915/adlp_dmc.bin'
drmn0: [drm] Finished loading DMC firmware i915/adlp_dmc.bin (v2.20)
drmn0: [drm] [ENCODER:244:DDI B/PHY B] unusable PPS, disabling eDP
panic: Assertion td->td_lkpi_task =3D=3D NULL failed at
/usr/src/sys/compat/linuxkpi/common/src/linux_current.c:85
cpuid =3D 9
time =3D 1785681088
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x36/frame 0xfffffe00eb603=
480
vpanic() at vpanic+0x149/frame 0xfffffe00eb6035b0
panic() at panic+0x43/frame 0xfffffe00eb603610
linux_alloc_current() at linux_alloc_current+0x2e3/frame 0xfffffe00eb603660
drm_framebuffer_init() at drm_framebuffer_init+0x199/frame 0xfffffe00eb6036=
90
intel_framebuffer_init() at intel_framebuffer_init+0x792/frame
0xfffffe00eb6036e0
intel_crtc_initial_plane_config() at
intel_crtc_initial_plane_config+0x7d5/frame 0xfffffe00eb603810
intel_display_driver_probe_nogem() at
intel_display_driver_probe_nogem+0x2ae/frame 0xfffffe00eb603850
i915_driver_probe() at i915_driver_probe+0x634/frame 0xfffffe00eb603890
linux_pci_attach_device() at linux_pci_attach_device+0x55b/frame
0xfffffe00eb6038f0
device_attach() at device_attach+0x466/frame 0xfffffe00eb603940
bus_generic_driver_added() at bus_generic_driver_added+0x90/frame
0xfffffe00eb603960
devclass_driver_added() at devclass_driver_added+0x29/frame 0xfffffe00eb603=
990
devclass_add_driver() at devclass_add_driver+0x138/frame 0xfffffe00eb6039d0
_linux_pci_register_driver() at _linux_pci_register_driver+0xc1/frame
0xfffffe00eb603a00
i915kms_evh() at i915kms_evh+0x272/frame 0xfffffe00eb603a20
module_register_init() at module_register_init+0xb0/frame 0xfffffe00eb603a50
linker_load_module() at linker_load_module+0xcf7/frame 0xfffffe00eb603d60
kern_kldload() at kern_kldload+0x172/frame 0xfffffe00eb603db0
sys_kldload() at sys_kldload+0x67/frame 0xfffffe00eb603df0
amd64_syscall() at amd64_syscall+0x17c/frame 0xfffffe00eb603f30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe00eb603f30
--- syscall (304, FreeBSD ELF64, kldload), rip =3D 0x1861805f36a, rsp =3D
0x1861598e3f8, rbp =3D 0x1861598e970$
KDB: enter: panic

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