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

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

            Bug ID: 297250
           Summary: drm-66-kmod/amdgpu: panic: Assertion td->td_lkpi_task
                    =3D=3D NULL
           Product: Base System
           Version: 16.0-CURRENT
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: [email protected]
          Reporter: [email protected]

Dump header from device: /dev/nda0p3
 Architecture: amd64
 Architecture Version: 2
 Dump Length: 798560256
 Blocksize: 512
 Compression: none
 Dumptime: 2026-08-02 20:07:23 +0200
 Hostname:
 Magic: FreeBSD Kernel Dump
 Version String: FreeBSD 16.0-CURRENT #0 main-n287888-f68d7bfc1479: Sun Aug=
  2
19:04:22 CEST 2026
   root@fbsd5pro:/usr/obj/usr/src/amd64.amd64/sys/GENERIC
 Panic String: Assertion td->td_lkpi_task =3D=3D NULL failed at
/usr/src/sys/compat/linuxkpi/common/src/linux_current.c:85
 Dump Parity: 1121206867
 Bounds: 4
 Dump Status: good
=E2=80=94
<118>Loading kernel modules:
drmn0: <drmn> on vgapci0
vgapci0: child drmn0 requested pci_enable_io
vgapci0: child drmn0 requested pci_enable_io
<6>[drm] initializing kernel modesetting (RENOIR 0x1002:0x1636 0x1002:0x1636
0xD9).
<6>[drm] register mmio base: 0xFCA00000
<6>[drm] register mmio size: 524288
<6>[drm] add ip block number 0 <soc15_common>
<6>[drm] add ip block number 1 <gmc_v9_0>
<6>[drm] add ip block number 2 <vega10_ih>
<6>[drm] add ip block number 3 <psp>
<6>[drm] add ip block number 4 <smu>
<6>[drm] add ip block number 5 <dm>
<6>[drm] add ip block number 6 <gfx_v9_0>
<6>[drm] add ip block number 7 <sdma_v4_0>
<6>[drm] add ip block number 8 <vcn_v2_0>
<6>[drm] add ip block number 9 <jpeg_v2_0>
<6>[drm] BIOS signature incorrect 0 0
drmn0: Fetched VBIOS from ROM BAR
<6>amdgpu: ATOM BIOS: 113-RENOIR-026
drmn0: successfully loaded firmware image 'amdgpu/renoir_asd.bin'
drmn0: successfully loaded firmware image 'amdgpu/renoir_ta.bin'
drmn0: successfully loaded firmware image 'amdgpu/renoir_dmcub.bin'
drmn0: successfully loaded firmware image 'amdgpu/renoir_pfp.bin'
drmn0: successfully loaded firmware image 'amdgpu/renoir_me.bin'
drmn0: successfully loaded firmware image 'amdgpu/renoir_ce.bin'
drmn0: successfully loaded firmware image 'amdgpu/renoir_rlc.bin'
drmn0: successfully loaded firmware image 'amdgpu/renoir_mec.bin'
drmn0: successfully loaded firmware image 'amdgpu/renoir_sdma.bin'
drmn0: successfully loaded firmware image 'amdgpu/renoir_vcn.bin'
drmn0: Trusted Memory Zone (TMZ) feature enabled
drmn0: PCIE atomic ops is not supported
drmn0: MODE2 reset
<6>[drm] vm size is 262144 GB, 4 levels, block size is 9-bit, fragment size=
 is
9-bit
drmn0: VRAM: 512M 0x000000F400000000 - 0x000000F41FFFFFFF (512M used)
drmn0: GART: 1024M 0x0000000000000000 - 0x000000003FFFFFFF
<6>[drm] Detected VRAM RAM=3D512M, BAR=3D512M
<6>[drm] RAM width 128bits DDR4
<6>[drm] amdgpu: 512M of VRAM memory ready
<6>[drm] amdgpu: 7867M of GTT memory ready.
<6>[drm] GART: num cpu pages 262144, num gpu pages 262144
<6>[drm] PCIE GART of 1024M enabled.
<6>[drm] PTB located at 0x000000F41FC00000
<6>[drm] Loading DMUB firmware via PSP: version=3D0x0101002B
<6>[drm] Found VCN firmware Version ENC: 1.24 DEC: 8 VEP: 0 Revision: 9
drmn0: reserve 0x400000 from 0xf41f800000 for PSP TMR
drmn0: RAS: optional ras ta ucode is not available
drmn0: RAP: optional rap ta ucode is not available
drmn0: psp gfx command LOAD_TA(0x1) failed and response status is (0x7)
drmn0: SMU is initialized successfully!
panic: Assertion td->td_lkpi_task =3D=3D NULL failed at
/usr/src/sys/compat/linuxkpi/common/src/linux_current.c:85
cpuid =3D 8
time =3D 1785694043
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x36/frame 0xfffffe01392cc=
238
vpanic() at vpanic+0x149/frame 0xfffffe01392cc368
panic() at panic+0x43/frame 0xfffffe01392cc3c8
linux_alloc_current() at linux_alloc_current+0x2e3/frame 0xfffffe01392cc418
dc_assert_fp_enabled() at dc_assert_fp_enabled+0x77/frame 0xfffffe01392cc438
dcn21_update_bw_bounding_box() at dcn21_update_bw_bounding_box+0x26/frame
0xfffffe01392cc470
dc_create() at dc_create+0x3c4/frame 0xfffffe01392cc4b0
dm_hw_init() at dm_hw_init+0x45e/frame 0xfffffe01392cc6d0
amdgpu_device_ip_hw_init_phase2() at amdgpu_device_ip_hw_init_phase2+0x5a/f=
rame
0xfffffe01392cc700
amdgpu_device_ip_init() at amdgpu_device_ip_init+0x3e0/frame 0xfffffe01392c=
c770
amdgpu_device_init() at amdgpu_device_init+0x1efc/frame 0xfffffe01392cc820
amdgpu_driver_load_kms() at amdgpu_driver_load_kms+0x16/frame
0xfffffe01392cc850
amdgpu_pci_probe() at amdgpu_pci_probe+0x299/frame 0xfffffe01392cc8a0
linux_pci_attach_device() at linux_pci_attach_device+0x55b/frame
0xfffffe01392cc900
device_attach() at device_attach+0x466/frame 0xfffffe01392cc950
bus_generic_driver_added() at bus_generic_driver_added+0x90/frame
0xfffffe01392cc970
devclass_driver_added() at devclass_driver_added+0x29/frame 0xfffffe01392cc=
9a0
devclass_add_driver() at devclass_add_driver+0x138/frame 0xfffffe01392cc9e0
_linux_pci_register_driver() at _linux_pci_register_driver+0xc1/frame
0xfffffe01392cca10
amdgpu_evh() at amdgpu_evh+0x65/frame 0xfffffe01392cca20
module_register_init() at module_register_init+0xb0/frame 0xfffffe01392cca50
linker_load_module() at linker_load_module+0xcf7/frame 0xfffffe01392ccd60
kern_kldload() at kern_kldload+0x172/frame 0xfffffe01392ccdb0
sys_kldload() at sys_kldload+0x67/frame 0xfffffe01392ccdf0
amd64_syscall() at amd64_syscall+0x17c/frame 0xfffffe01392ccf30
fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01392ccf30
--- syscall (304, FreeBSD ELF64, kldload), rip =3D 0x3f3d8048636a, rsp =3D
0x3f3d7da75358, rbp =3D 0x3f3d7da758d0 ---
KDB: enter: panic
Uptime: 7s
Dumping 761 out of 15734 MB:..3%..11%..22%..32%..43%..51%..61%..72%..82%..9=
1%
=E2=80=94=E2=80=94-
most recent head
main-n287888-f68d7bfc1479: Sun Aug  2 19:04:22 CEST 2026
--
root@fbsd5pro:~ # pkg -v
2.8.1
--
root@fbsd5pro:~ # make -C /usr/ports/graphics/drm-66-kmod -V PKGVERSION
6.6.25.1600019_10
--
AMD Ryzen 5 Pro
clean rebuilt of drm-66-kmod from port`s source, as suggested in mailing li=
st ,
didn`t help,=20
also tested D58593 as suggested in ml didn`t .

Regards
K.

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