rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=de6/1/0x4000000000000000 softirq=48548/48549 fqs=20 
	(detected by 0, t=10502 jiffies, g=65389, q=145)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 23096 Comm: syz-executor.5 Not tainted 5.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0xe0f/0x2ab0 kernel/locking/lockdep.c:4334
Code: 48 c7 c0 88 04 8f 89 48 c1 e8 03 8a 04 38 84 c0 0f 85 38 0e 00 00 49 09 dc 83 3d 23 ff 34 08 00 4c 8b 2c 24 0f 85 40 03 00 00 <83> 7c 24 58 00 0f 84 89 02 00 00 49 8d 5e f8 48 89 d8 48 c1 e8 03
RSP: 0018:ffffc90000da8b90 EFLAGS: 00000046
RAX: 1ffffffff131e000 RBX: 0000000083877c37 RCX: 000000000016cc7d
RDX: 00000000cccfb534 RSI: 00000000af7aef39 RDI: dffffc0000000000
RBP: ffffc90000da8ce8 R08: dffffc0000000000 R09: fffffbfff167b0a2
R10: fffffbfff167b0a2 R11: 0000000000000000 R12: a998246c83877c37
R13: ffff888040f76200 R14: ffff888040f76ad0 R15: 1ffff110081eed58
FS:  00007f13e729a700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000051b520 CR3: 000000005adc9000 CR4: 00000000001526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x160/0x730 kernel/locking/lockdep.c:5005
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
 _raw_spin_lock_irq+0x67/0x80 kernel/locking/spinlock.c:167
 __run_hrtimer kernel/time/hrtimer.c:1524 [inline]
 __hrtimer_run_queues+0x4b1/0x930 kernel/time/hrtimer.c:1584
 hrtimer_interrupt+0x373/0xd60 kernel/time/hrtimer.c:1646
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline]
 __sysvec_apic_timer_interrupt+0xf0/0x260 arch/x86/kernel/apic/apic.c:1097
 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline]
 sysvec_apic_timer_interrupt+0x94/0xf0 arch/x86/kernel/apic/apic.c:1091
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline]
RIP: 0010:on_each_cpu+0x187/0x1f0 kernel/smp.c:701
Code: c1 e8 03 42 80 3c 20 00 74 0c 48 c7 c7 f8 14 4d 89 e8 8d a3 4a 00 48 83 3d 3d 0a e3 07 00 74 6a e8 0e f1 0a 00 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 fa cf e6 ff 65 8b 1d 2f f3 97 7e
RSP: 0018:ffffc900084efca0 EFLAGS: 00000286
RAX: ffffffff816a0ac2 RBX: 0000000000000286 RCX: 0000000000040000
RDX: ffffc90013e58000 RSI: 0000000000000167 RDI: 0000000000000286
RBP: ffffffff81660ec3 R08: ffffffff817aaf70 R09: ffffed1015d24eb1
R10: ffffed1015d24eb1 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000286 R14: 0000000000000000 R15: ffffffff81652ba0
 clock_was_set+0x18/0x20 kernel/time/hrtimer.c:872
 timekeeping_inject_offset+0x6a2/0x700 kernel/time/timekeeping.c:1305
 do_adjtimex+0x3b3/0x9a0 kernel/time/timekeeping.c:2332
 do_clock_adjtime kernel/time/posix-timers.c:1109 [inline]
 __do_sys_clock_adjtime kernel/time/posix-timers.c:1121 [inline]
 __se_sys_clock_adjtime kernel/time/posix-timers.c:1112 [inline]
 __x64_sys_clock_adjtime+0x17e/0x210 kernel/time/posix-timers.c:1112
 do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45ccd9
Code: 2d b6 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 fb b5 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f13e7299c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 0000000000001dc0 RCX: 000000000045ccd9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 000000000078bf38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffd48cb832f R14: 00007f13e729a9c0 R15: 000000000078bf0c
rcu: rcu_preempt kthread starved for 10462 jiffies! g65389 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
rcu_preempt     R  running task    28896    10      2 0x00004000
Call Trace:
 context_switch kernel/sched/core.c:3778 [inline]
 __schedule+0x979/0xce0 kernel/sched/core.c:4527