------------[ cut here ]------------
WARNING: CPU: 1 PID: 19227 at kernel/sched/core.c:3146 __ttwu_queue_wakelist kernel/sched/core.c:3089 [inline]
WARNING: CPU: 1 PID: 19227 at kernel/sched/core.c:3146 ttwu_queue_wakelist kernel/sched/core.c:3150 [inline]
WARNING: CPU: 1 PID: 19227 at kernel/sched/core.c:3146 ttwu_queue_wakelist+0x288/0x340 kernel/sched/core.c:3143
Modules linked in:
CPU: 1 PID: 19227 Comm: kworker/1:9 Not tainted 5.10.0-next-20201223-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:ttwu_queue_wakelist kernel/sched/core.c:3146 [inline]
RIP: 0010:ttwu_queue_wakelist+0x288/0x340 kernel/sched/core.c:3143
Code: 0c 24 e9 89 fe ff ff 4c 89 04 24 e8 b2 b3 67 00 4c 8b 04 24 e9 ba fe ff ff e8 f4 b3 67 00 e9 4f ff ff ff e8 0a b4 67 00 eb 89 <0f> 0b e9 a8 fe ff ff 48 89 c6 48 c7 c7 c0 d7 23 8b 48 89 04 24 e8
RSP: 0018:ffffc90000dc0ce0 EFLAGS: 00010046
RAX: 0000000000000001 RBX: ffff8880b9f1ffe0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000010003 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8ae4e6c8 R09: ffffffff8cef58ff
R10: fffffbfff19deb1f R11: 0000000000000001 R12: 0000000000000001
R13: ffff88802172d400 R14: 0000000000000001 R15: ffff8880b9f00000
FS:  0000000000000000(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8bc72fd90 CR3: 00000000182f4000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ttwu_queue kernel/sched/core.c:3171 [inline]
 try_to_wake_up+0x549/0x13b0 kernel/sched/core.c:3454
 hrtimer_wakeup+0x43/0x60 kernel/time/hrtimer.c:1773
 __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:1085 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1102
 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:1096
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:check_kcov_mode kernel/kcov.c:163 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x7/0x60 kernel/kcov.c:197
Code: 0f bd c8 49 8b 14 24 48 63 c9 e9 66 ff ff ff 4c 01 ca 49 89 13 e9 00 fd ff ff 66 0f 1f 84 00 00 00 00 00 65 8b 05 f9 75 8f 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 00 f0 01 00 a9
RSP: 0018:ffffc9000d4cfb18 EFLAGS: 00000202
RAX: 0000000080000001 RBX: 0000000000000e34 RCX: 0000000000000e34
RDX: 0000000000000000 RSI: ffff888010fe8000 RDI: 0000000000000003
RBP: ffff8880101a5b00 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff841b3aa8 R11: 0000000000000000 R12: 0000000000008002
R13: ffffc9000d4cfba8 R14: ffffc9000d4cfba8 R15: ffff888027614000
 spinlock_check include/linux/spinlock.h:329 [inline]
 _extract_crng+0xc6/0x250 drivers/char/random.c:1007
 extract_crng drivers/char/random.c:1026 [inline]
 _get_random_bytes+0x229/0x670 drivers/char/random.c:1562
 eth_random_addr include/linux/etherdevice.h:225 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:521 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:570 [inline]
 nsim_dev_trap_report_work+0x38a/0xbd0 drivers/net/netdevsim/dev.c:611
 process_one_work+0x98d/0x15f0 kernel/workqueue.c:2275
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2421
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296