rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
	(detected by 1, t=10502 jiffies, g=7429, q=313)
rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4294954029-4294943528), jiffies_till_next_fqs=1, root ->qsmask 0x0
syz-executor.2  R  running task    28312  7966   7018 0x00000000
Call Trace:
 <IRQ>
 sched_show_task.cold.100+0x2ee/0x35d kernel/sched/core.c:5956
 print_other_cpu_stall kernel/rcu/tree_stall.h:430 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:558 [inline]
 rcu_pending kernel/rcu/tree.c:3225 [inline]
 rcu_sched_clock_irq.cold.87+0xaa3/0xc50 kernel/rcu/tree.c:2296
 update_process_times+0x23/0x50 kernel/time/timer.c:1727
 tick_sched_handle+0x77/0x140 kernel/time/tick-sched.c:176
 tick_sched_timer+0x43/0x100 kernel/time/tick-sched.c:1320
 __run_hrtimer kernel/time/hrtimer.c:1520 [inline]
 __hrtimer_run_queues+0x524/0xc00 kernel/time/hrtimer.c:1584
 hrtimer_interrupt+0x2df/0x760 kernel/time/hrtimer.c:1646
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113 [inline]
 smp_apic_timer_interrupt+0x163/0x5f0 arch/x86/kernel/apic/apic.c:1138
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x51/0x80 kernel/locking/spinlock.c:199
Code: f4 88 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 32 48 83 3d 98 41 a4 01 00 74 1f fb 66 0f 1f 44 00 00 <bf> 01 00 00 00 e8 25 e7 f8 f9 65 8b 05 96 f4 b1 78 85 c0 74 05 5b
RSP: 0000:ffffc9000927fca0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: dffffc0000000000 RBX: ffff888094a04bc0 RCX: 0000000000000000
RDX: 1ffffffff11e8d76 RSI: 0000000000000006 RDI: ffffffff88f46bb0
RBP: ffffc9000927fca8 R08: 0000000000000006 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000000b
R13: 000000000000000a R14: dffffc0000000000 R15: 0000000000000001
 spin_unlock_irq include/linux/spinlock.h:403 [inline]
 get_signal+0x14d2/0x1d30 kernel/signal.c:2742
 do_signal+0x87/0x28d0 arch/x86/kernel/signal.c:784
 exit_to_usermode_loop+0x114/0x2e0 arch/x86/entry/common.c:161
 prepare_exit_to_usermode+0x244/0x2f0 arch/x86/entry/common.c:196
 ret_from_intr+0x26/0x2b
RIP: 0033:0x4057e9
Code: d0 ff ff ff 01 48 8b 7c 24 28 c7 44 24 34 00 00 00 00 e8 4a d3 01 00 85 c0 75 23 48 6b 44 24 20 18 8b 7c 24 1c 48 03 44 24 38 <48> 8b 48 10 48 8b 50 08 48 8b 30 e8 e7 ee 00 00 89 44 24 34 64 f0
RSP: 002b:00007fefd83d7a70 EFLAGS: 00010202
RAX: 0000000024bd3180 RBX: 0000000000000007 RCX: 0000000000414717
RDX: 5d00d43f06b552c8 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 00007fefd83d7a70 R09: 000000000075bf20
R10: 0000000000000000 R11: 0000000000000000 R12: 00007fefd83d86d4
R13: 00000000004cae58 R14: 00000000004e4478 R15: 00000000ffffffff
rcu: rcu_preempt kthread starved for 10534 jiffies! g7429 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    29096    10      2 0x80004000
Call Trace:
 context_switch kernel/sched/core.c:3367 [inline]
 __schedule+0x8ae/0x19c0 kernel/sched/core.c:4083
 schedule+0xc3/0x2b0 kernel/sched/core.c:4158
 schedule_timeout+0x2bd/0x710 kernel/time/timer.c:1898
 rcu_gp_fqs_loop kernel/rcu/tree.c:1674 [inline]
 rcu_gp_kthread+0x9da/0x1a40 kernel/rcu/tree.c:1836
 kthread+0x354/0x420 kernel/kthread.c:268
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352