rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2686 jiffies s: 545 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: 5080 Comm: syz-executor569 Not tainted 6.8.0-rc3-syzkaller-00184-g5b3fbd61b9d1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] RIP: 0010:__lock_acquire+0xc4a/0x1fd0 kernel/locking/lockdep.c:5107 Code: 00 00 00 fc ff df 0f b6 04 38 84 c0 0f 85 aa 0c 00 00 83 3d d7 ef d6 12 00 75 39 48 63 9c 24 88 00 00 00 48 89 d8 48 c1 e8 06 <48> 8d 3c c5 20 94 c8 92 be 08 00 00 00 e8 e4 60 84 00 48 bf 00 00 RSP: 0018:ffffc900000077f0 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff94481303 RDX: 0000000000000000 RSI: 0000000000000008 RDI: dffffc0000000000 RBP: ffff88802b12c6b8 R08: ffffffff92c89427 R09: 1ffffffff2591284 R10: dffffc0000000000 R11: fffffbfff2591285 R12: 0000000000000001 R13: ffff88802b12bb80 R14: 1ffff110056258db R15: ffff88802b12c6d8 FS: 00005555556a5480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff02da24523 CR3: 000000001f572000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754 debug_objects_fill_pool+0x9f/0x9b0 lib/debugobjects.c:614 debug_object_activate+0x135/0x510 lib/debugobjects.c:704 debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline] debug_activate kernel/time/hrtimer.c:477 [inline] enqueue_hrtimer+0x30/0x320 kernel/time/hrtimer.c:1087 __run_hrtimer kernel/time/hrtimer.c:1705 [inline] __hrtimer_run_queues+0x6b4/0xd00 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline] __sysvec_apic_timer_interrupt+0x107/0x3a0 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649 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 ce 74 84 f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 a3 3a f3 f5 65 8b 05 34 b1 92 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90003b56a60 EFLAGS: 00000206 RAX: ed615f539629c200 RBX: 1ffff9200076ad50 RCX: ffffffff817183ea RDX: dffffc0000000000 RSI: ffffffff8baab5e0 RDI: 0000000000000001 RBP: ffffc90003b56af0 R08: ffffffff92c894e7 R09: 1ffffffff259129c R10: dffffc0000000000 R11: fffffbfff259129d R12: dffffc0000000000 R13: 1ffff9200076ad4c R14: ffffc90003b56a80 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] taprio_change+0x4912/0x57d0 net/sched/sch_taprio.c:1993 taprio_init+0x9da/0xc80 net/sched/sch_taprio.c:2134 qdisc_create+0x9d4/0x1190 net/sched/sch_api.c:1355 tc_modify_qdisc+0xa26/0x1e40 net/sched/sch_api.c:1776 rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6615 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367 netlink_sendmsg+0xa3b/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2584 ___sys_sendmsg net/socket.c:2638 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2667 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7ff02da26529 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffee947a828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff02da26529 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00000000000f4240 R08: 0000000000000000 R09: 00007ffee947a890 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffee947a890 R13: 0000000000000001 R14: 00007ffee947a890 R15: 0000000000000003 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.583 msecs