BUG: kernel NULL pointer dereference, address: 0000000000000026
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP NOPTI
CPU: 7 PID: 490 Comm: comp_1.0.0 Not tainted 5.6.6-300.fc32.x86_64 #1
Hardware name: LENOVO 81SS/LNVNB161216, BIOS AGCN25WW(V1.08) 11/13/2019
RIP: 0010:__kthread_should_park+0x5/0x30
Code: 02 00 00 00 83 e0 3f 48 c1 e6 03 48 83 c0 01 48 c1 e0 0a 48 29 f0 48 8d b0 c0 14 03 a4 e9 b3 fa ff ff 0f 1f 00 0f 1f 44 00 00 <f6> 47 26 20 74 12 48 8b 87 88 09 00 00 48 8b 00 48 c1 e8 02 83 e0
RSP: 0018:ffffa760c07c3e48 EFLAGS: 00010246
RAX: 7fffffffffffffff RBX: ffff897d74c08000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000246 RDI: 0000000000000000
RBP: ffff897d74c08188 R08: ffff897d77bbcd80 R09: ffff897d8277dfdc
R10: 000000000000029e R11: 0000000000000002 R12: ffff897d78f74500
R13: ffffa760c091b958 R14: ffff897d74c08000 R15: ffff897d77bbcd00
FS:  0000000000000000(0000) GS:ffff897d84bc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000026 CR3: 00000002b7a76000 CR4: 00000000003406e0
Call Trace:
 drm_sched_get_cleanup_job+0x46/0x140 [gpu_sched]
 drm_sched_main+0x5c/0x450 [gpu_sched]
 ? __schedule+0x277/0x760
 ? drm_sched_rq_select_entity+0xa0/0xa0 [gpu_sched]
 kthread+0x115/0x140
 ? __kthread_bind_mask+0x60/0x60
 ret_from_fork+0x22/0x40
Modules linked in: amdgpu(+) amd_iommu_v2 gpu_sched i2c_algo_bit ttm drm_kms_helper drm hid_sensor_hub wacom hid_multitouch crc32c_intel serio_raw sdhci_pci nvme cqhci sdhci nvme_core mmc_core wmi video pinctrl_amd i2c_hid fuse
CR2: 0000000000000026