rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2673 jiffies s: 2369 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: 5598 Comm: syz-executor.0 Not tainted 6.11.0-rc3-syzkaller-gd74da846046a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:lock_release+0x253/0xa30 kernel/locking/lockdep.c:5780 Code: 42 0f b6 04 38 84 c0 0f 85 78 05 00 00 8b 06 85 c0 0f 84 2e 02 00 00 48 89 34 24 48 89 54 24 08 48 89 5c 24 28 4c 89 64 24 10 <48> 89 44 24 38 8d 58 ff 4d 8d b5 e0 0a 00 00 4c 63 eb 41 83 fd 31 RSP: 0018:ffffc90000a18b80 EFLAGS: 00000002 RAX: 0000000000000002 RBX: 0000000000000046 RCX: ffffc90000a18c03 RDX: 1ffff92000143180 RSI: ffff88806b410ad8 RDI: ffffffff8c606400 RBP: ffffc90000a18cb0 R08: ffffffff9017ce2f R09: 1ffffffff202f9c5 R10: dffffc0000000000 R11: fffffbfff202f9c6 R12: 1ffff9200014317c R13: ffff88806b410000 R14: ffff8880b932c898 R15: dffffc0000000000 FS: 00007f1c3cf1d6c0(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1c3cefcd58 CR3: 000000006c8f8000 CR4: 0000000000350ef0 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline] _raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x477/0xd50 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:synchronize_rcu+0x0/0x360 kernel/rcu/tree.c:4010 Code: e1 07 80 c1 03 38 c1 0f 8c 97 fe ff ff 4c 89 f7 e8 15 dc 80 00 e9 8a fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 e4 e0 48 RSP: 0018:ffffc90002d3f0b8 EFLAGS: 00000206 RAX: dffffc0000000000 RBX: 1ffff920005a7e20 RCX: ffffffff94f26903 RDX: 0000000000000001 RSI: ffffffff8c0ae240 RDI: ffffffff8c606400 RBP: ffffc90002d3f188 R08: ffffffff94f1a9b7 R09: 1ffffffff29e3536 R10: dffffc0000000000 R11: fffffbfff29e3537 R12: ffffffff94f19f08 R13: 1ffff920005a7e1c R14: 0000000000000216 R15: ffffc90002d3f100 lockdep_unregister_key+0x4b7/0x540 kernel/locking/lockdep.c:6487 __qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1079 taprio_attach+0x24e/0x390 net/sched/sch_taprio.c:2146 qdisc_graft+0x128c/0x1580 net/sched/sch_api.c:1176 tc_modify_qdisc+0xf47/0x1e40 net/sched/sch_api.c:1788 rtnetlink_rcv_msg+0x741/0xcf0 net/core/rtnetlink.c:6647 netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f2/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x223/0x270 net/socket.c:745 ____sys_sendmsg+0x525/0x7d0 net/socket.c:2597 ___sys_sendmsg net/socket.c:2651 [inline] __sys_sendmsg+0x2b0/0x3a0 net/socket.c:2680 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: 0033:0x7f1c3c27cda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f1c3cf1d0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f1c3c3abf80 RCX: 00007f1c3c27cda9 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00007f1c3c2c947a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f1c3c3abf80 R15: 00007ffe73b08428