rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...0: (3 GPs behind) idle=fa3/0/0x1 softirq=10121/10122 fqs=5248 (detected by 1, t=10502 jiffies, g=12685, q=975) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.180-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__lock_acquire+0x2b3/0x1ff0 kernel/locking/lockdep.c:-1 Code: 00 0f 85 b5 12 00 00 48 c7 c7 00 2a ab 8a 48 c7 c6 a0 52 ab 8a e8 0d 47 e9 ff 0f 0b 31 f6 e9 9b 12 00 00 31 c0 44 89 64 24 70 <44> 89 74 24 54 49 8d 8d f0 0a 00 00 4c 8d 34 80 4c 89 6c 24 18 4b RSP: 0018:ffffc900000079e0 EFLAGS: 00000046 RAX: 0000000000000001 RBX: ffffffff8c8be190 RCX: ffffffff96a96f03 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffffffff96d17a18 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: ffffffff8c8bd680 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055cbc5fa88a8 CR3: 000000002b4ef000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162 debug_object_activate+0x63/0x4e0 lib/debugobjects.c:694 debug_hrtimer_activate kernel/time/hrtimer.c:410 [inline] debug_activate kernel/time/hrtimer.c:465 [inline] enqueue_hrtimer+0x30/0x390 kernel/time/hrtimer.c:1074 __run_hrtimer kernel/time/hrtimer.c:1707 [inline] __hrtimer_run_queues+0x6b6/0xcf0 kernel/time/hrtimer.c:1754 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1816 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:default_idle+0xb/0x10 arch/x86/kernel/process.c:723 Code: 07 80 c1 03 38 c1 7c b5 4c 89 e7 e8 1f f3 80 f7 eb ab e8 88 80 f6 ff cc cc cc cc cc cc cc cc 66 90 0f 00 2d 17 3d 5c 00 fb f4 0f 1f 40 00 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 48 RSP: 0018:ffffffff8c807da8 EFLAGS: 000002c2 RAX: fba9cc8143b08900 RBX: ffffffff8c8bd680 RCX: 0000000000009fa2 RDX: 0000000000000001 RSI: ffffffff8aab2b60 RDI: ffffffff8af9fc80 RBP: ffffffff8c807ef8 R08: dffffc0000000000 R09: ffffed10171c765a R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff1900fce R13: 1ffffffff1917ad0 R14: 0000000000000000 R15: dffffc0000000000 default_idle_call+0x81/0xc0 kernel/sched/idle.c:112 cpuidle_idle_call kernel/sched/idle.c:194 [inline] do_idle+0x271/0x670 kernel/sched/idle.c:306 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403 start_kernel+0x48c/0x540 init/main.c:1140 secondary_startup_64_no_verify+0xb1/0xbb