rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2685 jiffies s: 2337 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: 17 Comm: rcu_preempt Not tainted 6.11.0-rc1-syzkaller-00283-gd3426a6ed9d8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:netdev_get_num_tc include/linux/netdevice.h:2460 [inline] RIP: 0010:taprio_set_budgets+0xb2/0x310 net/sched/sch_taprio.c:661 Code: 48 b8 00 00 00 00 00 fc ff df 48 8b 6d 00 48 8d 7d 36 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 <84> d2 0f 85 a5 01 00 00 0f bf 45 36 31 ff 89 c3 89 c6 89 44 24 0c RSP: 0018:ffffc90000a18d10 EFLAGS: 00000002 RAX: 0000000000000007 RBX: ffff88801bab42c0 RCX: ffffffff8921beef RDX: 0000000000000000 RSI: ffffffff8920e252 RDI: ffff888078a20036 RBP: ffff888078a20000 R08: 0000000000000004 R09: 0000000000000002 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000002 R13: ffff88806cb87000 R14: ffff88801bab4340 R15: ffff88806cb86c00 FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bafdd3bad1 CR3: 0000000079b70000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: advance_sched+0x5e1/0xc60 net/sched/sch_taprio.c:977 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:finish_task_switch.isra.0+0x220/0xcc0 kernel/sched/core.c:5062 Code: a9 0a 00 00 44 8b 0d 87 df b7 0e 45 85 c9 0f 85 c0 01 00 00 48 89 df e8 ae f8 ff ff e8 e9 b9 36 00 fb 65 48 8b 1d 30 cf a8 7e <48> 8d bb f8 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc90000167a08 EFLAGS: 00000206 RAX: 0000000000023441 RBX: ffff888017a98000 RCX: 1ffffffff2024ec1 RDX: 0000000000000000 RSI: ffffffff8b4cc500 RDI: ffffffff8bb08500 RBP: ffffc90000167a50 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff9012ba5f R11: 0000000000000000 R12: ffff8880b933fb58 R13: ffff888050351e00 R14: 0000000000000000 R15: ffff8880b933edc0 context_switch kernel/sched/core.c:5191 [inline] __schedule+0xe3f/0x5490 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6621 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244