rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=ef2/1/0x4000000000000000 softirq=221490/221491 fqs=193 
	(detected by 1, t=10502 jiffies, g=419765, q=920)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7082 Comm: syz-executor.5 Not tainted 5.10.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0xd7d/0x5590 kernel/locking/lockdep.c:4701
Code: 8c 00 00 00 89 05 a3 46 1e 0d e9 81 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 80 3c 02 00 0f 85 fc 2e 00 00 <49> 81 3e 80 81 49 8e 0f 84 59 f3 ff ff 83 fd 01 0f 87 5b f3 ff ff
RSP: 0018:ffffc90000007b50 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 1ffff11011300460 RSI: 0000000000000000 RDI: ffff888089802300
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888073ed3480
R13: 0000000000000000 R14: ffff888089802300 R15: 0000000000000000
FS:  00007fec3e37b700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000050ca70 CR3: 000000008c10b000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5436 [inline]
 lock_acquire+0x2a3/0x8c0 kernel/locking/lockdep.c:5401
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151
 spin_lock include/linux/spinlock.h:354 [inline]
 advance_sched+0x4f/0x990 net/sched/sch_taprio.c:699
 __run_hrtimer kernel/time/hrtimer.c:1519 [inline]
 __hrtimer_run_queues+0x693/0xea0 kernel/time/hrtimer.c:1583
 hrtimer_interrupt+0x334/0x940 kernel/time/hrtimer.c:1645
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1097
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_sysvec_on_irqstack arch/x86/include/asm/irq_stack.h:37 [inline]
 run_sysvec_on_irqstack_cond arch/x86/include/asm/irq_stack.h:89 [inline]
 sysvec_apic_timer_interrupt+0xbd/0x100 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x50 kernel/locking/spinlock.c:191
Code: f8 5d c3 66 90 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 ca bb 6d f8 48 89 ef e8 32 7c 6e f8 f6 c7 02 75 1a 53 9d <bf> 01 00 00 00 e8 71 cf 62 f8 65 8b 05 ea 79 19 77 85 c0 74 0a 5b
RSP: 0018:ffffc90002fef2a0 EFLAGS: 00000246
RAX: 00000000000000e0 RBX: 0000000000000246 RCX: ffffffff8155a797
RDX: 0000000000000000 RSI: 0000000000000202 RDI: 0000000000000000
RBP: ffff8880898022e8 R08: 0000000000000001 R09: ffffffff8ebae737
R10: fffffbfff1d75ce6 R11: 0000000000000000 R12: 0000000000000246
R13: 1647f2fe61a8411f R14: ffff888089802000 R15: 0000000000000000
 spin_unlock_irqrestore include/linux/spinlock.h:409 [inline]
 taprio_change+0x2266/0x2d40 net/sched/sch_taprio.c:1580
 taprio_init+0x52e/0x670 net/sched/sch_taprio.c:1693
 qdisc_create+0x4ba/0x1270 net/sched/sch_api.c:1246
 tc_modify_qdisc+0x4c8/0x1990 net/sched/sch_api.c:1662
 rtnetlink_rcv_msg+0x44e/0xad0 net/core/rtnetlink.c:5562
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2494
 netlink_unicast_kernel net/netlink/af_netlink.c:1304 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1330
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1919
 sock_sendmsg_nosec net/socket.c:651 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:671
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2353
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2407
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2440
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45deb9
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fec3e37ac78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002e680 RCX: 000000000045deb9
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 00007ffe222eb6df R14: 00007fec3e37b9c0 R15: 000000000118bf2c
rcu: rcu_preempt kthread starved for 10109 jiffies! g419765 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:28880 pid:   11 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:3774 [inline]
 __schedule+0x893/0x2130 kernel/sched/core.c:4523
 schedule+0xcf/0x270 kernel/sched/core.c:4601
 schedule_timeout+0x148/0x250 kernel/time/timer.c:1871
 rcu_gp_fqs_loop kernel/rcu/tree.c:1925 [inline]
 rcu_gp_kthread+0xb4c/0x1c90 kernel/rcu/tree.c:2099
 kthread+0x3af/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296