rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2687 jiffies s: 51409 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6167 Comm: kworker/0:16 Not tainted 6.1.90-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 Workqueue: events nsim_dev_trap_report_work RIP: 0010:debug_spin_unlock kernel/locking/spinlock_debug.c:101 [inline] RIP: 0010:do_raw_spin_unlock+0x81/0x8a0 kernel/locking/spinlock_debug.c:140 Code: 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 23 04 00 00 41 83 3f 00 0f 84 99 01 00 00 4d 8d 6f 10 4d 89 ec 49 c1 ec 03 41 80 3c 1c 00 <74> 08 4c 89 ef e8 35 3f 76 00 65 48 8b 2d dd a9 96 7e 49 39 6d 00 RSP: 0018:ffffc90000007c50 EFLAGS: 00000046 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff816bc524 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880602a32e8 RBP: ffff8880602a32e8 R08: dffffc0000000000 R09: ffffed100c05465e R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1100c05465f R13: ffff8880602a32f8 R14: dffffc0000000000 R15: ffff8880602a32e8 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc929b4b38 CR3: 0000000065bb2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 000000000000000a DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_unlock+0x1a/0x40 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] advance_sched+0x68b/0x970 net/sched/sch_taprio.c:749 __run_hrtimer kernel/time/hrtimer.c:1686 [inline] __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1750 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:__sanitizer_cov_trace_pc+0x58/0x60 kernel/kcov.c:225 Code: f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 0f 1f 80 00 00 00 00 4c 8b 04 24 65 48 8b 15 84 e1 77 7e 65 8b RSP: 0018:ffffc9000b34fb40 EFLAGS: 00000293 RAX: ffffffff845fe693 RBX: 0000000000000000 RCX: ffff88807e28d940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff845fe688 R09: ffffffff88889fa5 R10: 0000000000000003 R11: ffff88807e28d940 R12: 0000000000000014 R13: dffffc0000000000 R14: dffffc0000000000 R15: ffff8880405c800e do_csum lib/checksum.c:54 [inline] ip_fast_csum+0x53/0x2a0 lib/checksum.c:108 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:771 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline] nsim_dev_trap_report_work+0x54f/0xa90 drivers/net/netdevsim/dev.c:850 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308