rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-....: (1 ticks this GP) idle=c05/1/0x4000000000000000 softirq=10568/10568 fqs=2099 (detected by 0, t=10504 jiffies, g=12529, q=2100) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4257 Comm: kworker/1:11 Not tainted 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: events_power_efficient neigh_periodic_work RIP: 0010:do_raw_spin_unlock+0x1/0x8b0 kernel/locking/spinlock_debug.c:138 Code: 80 e1 07 80 c1 03 38 c1 0f 8c 2c ff ff ff e8 36 34 66 00 e9 22 ff ff ff e8 fc a3 db 08 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 28 49 89 ff 48 bb 00 00 00 00 RSP: 0018:ffffc90000dd0c10 EFLAGS: 00000046 RAX: 1596016e6a13df00 RBX: ffffffff96d1d9f0 RCX: ffffc90000dd0b03 RDX: 0000000000000004 RSI: ffffffff8aab3d00 RDI: ffffffff96d1d9f0 RBP: ffffc90000dd0cb8 R08: dffffc0000000000 R09: fffffbfff1c153f6 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff920001ba184 R14: ffffc90000dd0c40 R15: 0000000000000046 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faf68b89378 CR3: 000000005b2cf000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:159 [inline] _raw_spin_unlock_irqrestore+0x7d/0x130 kernel/locking/spinlock.c:194 debug_object_activate+0x2f4/0x4e0 lib/debugobjects.c:712 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline] debug_activate kernel/time/hrtimer.c:475 [inline] enqueue_hrtimer+0x30/0x390 kernel/time/hrtimer.c:1084 __run_hrtimer kernel/time/hrtimer.c:1705 [inline] __hrtimer_run_queues+0x6b6/0xcf0 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline] __sysvec_apic_timer_interrupt+0x13b/0x4b0 arch/x86/kernel/apic/apic.c:1114 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:__kasan_check_write+0x0/0x10 mm/kasan/shadow.c:37 Code: 24 3d 8c eb 0a 48 c7 c7 af 24 3d 8c 4c 89 fe e8 36 42 74 08 31 db eb d7 cc cc 89 f6 48 8b 0c 24 31 d2 e9 63 ef ff ff 0f 1f 00 <89> f6 48 8b 0c 24 ba 01 00 00 00 e9 50 ef ff ff 55 41 56 53 48 89 RSP: 0018:ffffc9000351fad8 EFLAGS: 00000297 RAX: 0000000000000004 RBX: dffffc0000000000 RCX: 000000000351fb03 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffffffff8dd46b98 RBP: ffffc9000351fbc0 R08: dffffc0000000000 R09: fffffbfff2131e20 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000351fb40 R13: 1ffffffff1ba8d74 R14: 1ffff920006a3f68 R15: ffffffff8dd46b98 instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:511 [inline] queued_write_lock include/asm-generic/qrwlock.h:94 [inline] do_raw_write_lock+0x136/0x4e0 kernel/locking/spinlock_debug.c:210 neigh_periodic_work+0xa42/0xc40 net/core/neighbour.c:961 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287