Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 0 P4D 0 
Oops: 0010 [#1] SMP NOPTI
CPU: 1 PID: 120 Comm: kworker/u4:4 Not tainted 5.11.12-300.fc34.x86_64 #1
Hardware name: Gateway T-1616/, BIOS 90.02    08/02/2007
Workqueue: events_unbound async_run_entry_fn
RIP: 0010:0x0
Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
RSP: 0018:ffffba5ac01dbb50 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff9ab0ffffffe8
RBP: 0000000000000000 R08: ffff9ab0ffffffe8 R09: ffffba5ac01dbba8
R10: 00000000000000d4 R11: 0000000000000000 R12: ffffffffffffffe8
R13: 0000000000000003 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff9ab20c300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000108498000 CR4: 00000000000006e0
Call Trace:
 __wake_up_common+0x80/0x180
 __wake_up_common_lock+0x6c/0x90
 sbitmap_queue_wake_all+0x43/0x60
 blk_mq_tag_wakeup_all+0x15/0x30
 blk_mq_wake_waiters+0x3d/0x50
 blk_set_queue_dying+0x22/0x40
 blk_cleanup_queue+0x26/0xd0
 __scsi_remove_device+0x66/0x150
 scsi_probe_and_add_lun+0x974/0xdc0
 __scsi_scan_target+0x202/0x5a0
 ? __switch_to+0x348/0x460
 ? sched_clock+0x5/0x10
 scsi_scan_channel+0x58/0x90
 scsi_scan_host_selected+0xdb/0x110
 do_scan_async+0x18/0x160
 async_run_entry_fn+0x39/0x160
 process_one_work+0x1ec/0x380
 worker_thread+0x53/0x3e0
 ? process_one_work+0x380/0x380
 kthread+0x11b/0x140
 ? kthread_associate_blkcg+0xa0/0xa0
 ret_from_fork+0x22/0x30
Modules linked in: radeon(+) i2c_algo_bit drm_ttm_helper ttm drm_kms_helper cec drm r8169 ata_generic serio_raw pata_acpi pata_atiixp video ums_realtek uas usb_storage fuse
CR2: 0000000000000000