RDX: 0000000000000006 RSI: 0000000020000100 RDI: 0000000000000004
RBP: 00007fc0f81c5ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007fffce1209df R14: 00007fc0f81c69c0 R15: 000000000119bf8c
INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=7264, c=7263, q=27)
All QSes seen, last rcu_preempt kthread activity 10502 (4294976793-4294966291), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.1  R  running task    28912 18871   8022 0x0000000a
Call Trace:
 <IRQ>
 sched_show_task.cold+0x333/0x39a kernel/sched/core.c:5165
 print_other_cpu_stall kernel/rcu/tree.c:1501 [inline]
 check_cpu_stall kernel/rcu/tree.c:1616 [inline]
 __rcu_pending kernel/rcu/tree.c:3390 [inline]
 rcu_pending kernel/rcu/tree.c:3452 [inline]
 rcu_check_callbacks.cold+0xd29/0xd99 kernel/rcu/tree.c:2792
 update_process_times+0x29/0x60 kernel/time/timer.c:1591
 tick_sched_handle+0x7d/0x150 kernel/time/tick-sched.c:165
 tick_sched_timer+0x92/0x200 kernel/time/tick-sched.c:1223
 __run_hrtimer kernel/time/hrtimer.c:1223 [inline]
 __hrtimer_run_queues+0x30b/0xc80 kernel/time/hrtimer.c:1287
 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline]
 smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1100
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793
 </IRQ>
RIP: 0010:__read_once_size include/linux/compiler.h:183 [inline]
RIP: 0010:atomic_read arch/x86/include/asm/atomic.h:27 [inline]
RIP: 0010:queued_write_lock_slowpath+0xdd/0x1d0 kernel/locking/qrwlock.c:139
RSP: 0018:ffff888053b8fd38 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: ffffffff89dd23a8 RCX: 0000000000003243
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff89dd23a8
RBP: ffffffff89dd23ac R08: ffffffff8b9a1cd8 R09: 000000000004059e
R10: ffff88809e00ac30 R11: ffff88809e00a380 R12: 0000000000000003
R13: fffffbfff13ba475 R14: 00000000000000ff R15: ffffffff88637ec0
 queued_write_lock include/asm-generic/qrwlock.h:134 [inline]
 do_raw_write_lock+0xc2/0x1d0 kernel/locking/spinlock_debug.c:203
 bt_sock_link+0x1f/0x120 net/bluetooth/af_bluetooth.c:143
 hci_sock_create+0x15c/0x1d0 net/bluetooth/hci_sock.c:2017
 bt_sock_create+0x13b/0x280 net/bluetooth/af_bluetooth.c:130
 __sock_create+0x303/0x620 net/socket.c:1275
 sock_create net/socket.c:1315 [inline]
 SYSC_socket net/socket.c:1345 [inline]
 SyS_socket+0xd1/0x1b0 net/socket.c:1325
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45e299
RSP: 002b:00007f6c8515ac08 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e299
RDX: 0000000000000001 RSI: 0000000000000003 RDI: 000000000000001f
RBP: 000000000119bfc0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c
R13: 00007fff9e12012f R14: 00007f6c8515b9c0 R15: 000000000119bf8c
rcu_preempt kthread starved for 10502 jiffies! g7264 c7263 f0x2 RCU_GP_WAIT_FQS(3) ->state=0x0 ->cpu=0
rcu_preempt     R  running task    30008     8      2 0x80000000
Call Trace:
 context_switch kernel/sched/core.c:2808 [inline]
 __schedule+0x88b/0x1de0 kernel/sched/core.c:3384
 schedule+0x8d/0x1b0 kernel/sched/core.c:3428
 schedule_timeout+0x4af/0xe90 kernel/time/timer.c:1747
 rcu_gp_kthread+0xc0a/0x1e60 kernel/rcu/tree.c:2255
 kthread+0x30d/0x420 kernel/kthread.c:232
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404