rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2643 jiffies s: 33833 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 17905 Comm: syz.0.4727 Not tainted 6.11.0-rc4-syzkaller-00033-g872cf28b8df9 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:466 [inline] RIP: 0010:lock_is_held_type+0x10e/0x190 kernel/locking/lockdep.c:5832 Code: 95 c0 31 db 44 39 f0 0f 94 c3 eb 05 bb 01 00 00 00 48 c7 c7 e0 e6 0a 8c e8 cf 1a 00 00 b8 ff ff ff ff 65 0f c1 05 e2 cb 4b 74 <83> f8 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 RSP: 0018:ffffc90000a18c48 EFLAGS: 00000057 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff88806d470000 RDX: ffff88806d470000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c606d40 RBP: 0000000000000000 R08: ffffffff89bd8d61 R09: fffff52000143180 R10: dffffc0000000000 R11: fffff52000143180 R12: 0000000000000046 R13: ffff88806d470000 R14: 00000000ffffffff R15: ffff88801f083300 FS: 00007f83185ff6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000440 CR3: 0000000049498000 CR4: 0000000000350ef0 Call Trace: lock_is_held include/linux/lockdep.h:249 [inline] advance_sched+0x148/0xca0 net/sched/sch_taprio.c:927 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 de f6 39 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 73 2c a2 f5 65 8b 05 b4 00 43 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc900044979c0 EFLAGS: 00000206 RAX: 94bc89d13263ae00 RBX: 1ffff92000892f3c RCX: ffffffff94f2b903 RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: 0000000000000001 RBP: ffffc90004497a50 R08: ffffffff9017f16f R09: 1ffffffff202fe2d R10: dffffc0000000000 R11: fffffbfff202fe2e R12: dffffc0000000000 R13: 1ffff92000892f38 R14: ffffc900044979e0 R15: 0000000000000246 class_raw_spinlock_irqsave_destructor include/linux/spinlock.h:551 [inline] try_to_wake_up+0x8fb/0x1470 kernel/sched/core.c:4051 wake_up_process kernel/sched/core.c:4299 [inline] wake_up_q+0xc8/0x120 kernel/sched/core.c:1029 futex_wake+0x523/0x5c0 kernel/futex/waitwake.c:199 do_futex+0x392/0x560 kernel/futex/syscalls.c:107 __do_sys_futex kernel/futex/syscalls.c:179 [inline] __se_sys_futex+0x3f9/0x480 kernel/futex/syscalls.c:160 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8318b79e79 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f83185ff0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f8318d15f88 RCX: 00007f8318b79e79 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f8318d15f8c RBP: 00007f8318d15f80 R08: 7fffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8318d15f8c R13: 0000000000000000 R14: 00007ffd06ff0660 R15: 00007ffd06ff0748