rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2665 jiffies s: 789 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: 5150 Comm: syz-executor.0 Not tainted 6.7.0-syzkaller-04629-g3e7aeb78ab01 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x60 kernel/kcov.c:207 Code: fa 48 8b be b0 01 00 00 e8 b0 ff ff ff 31 c0 c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 48 8b 14 25 80 c2 03 00 <65> 8b 05 34 ae 7b 7e a9 00 01 ff 00 48 8b 34 24 74 0f f6 c4 01 74 RSP: 0018:ffffc90000007d88 EFLAGS: 00000006 RAX: 0000000000010203 RBX: 17ab670572b4f106 RCX: ffffffff88a95851 RDX: ffff88802a2e8000 RSI: 17ab670572b4f106 RDI: 0000000000000006 RBP: 0000000000000000 R08: 0000000000000006 R09: 17ab670572b4f106 R10: 0000000000000000 R11: ffffffff8acf2fc0 R12: ffff8880b982bf40 R13: 0000000000000000 R14: ffff88802d2ab340 R15: ffff888029673c00 FS: 00007f17479f06c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff8aab0ee8 CR3: 000000007332c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: should_restart_cycle net/sched/sch_taprio.c:880 [inline] advance_sched+0x23f/0xc60 net/sched/sch_taprio.c:959 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x203/0xc20 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline] __sysvec_apic_timer_interrupt+0x105/0x400 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x90/0xb0 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+0x31/0x70 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 36 1d dc f6 48 89 df e8 2e 95 dc f6 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 35 35 ce f6 65 8b 05 06 7a 77 75 85 c0 74 12 5b RSP: 0018:ffffc90004c9f098 EFLAGS: 00000246 RAX: 0000000000000046 RBX: ffff88802d2ab2e8 RCX: 1ffffffff1e74bb3 RDX: 0000000000000000 RSI: ffffffff8b2f85c0 RDI: ffffffff8a8c488e RBP: 0000000000000246 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8f3a29d7 R11: ffffffff8acf2fc0 R12: 7fffffffffffffff R13: 0000000000000002 R14: 0000000000000009 R15: 0000000000000000 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] taprio_change+0x2908/0x38d0 net/sched/sch_taprio.c:1993 taprio_init+0x6b1/0x940 net/sched/sch_taprio.c:2134 qdisc_create+0x4ed/0x10a0 net/sched/sch_api.c:1355 tc_modify_qdisc+0x4d5/0x1c30 net/sched/sch_api.c:1776 rtnetlink_rcv_msg+0x3c7/0xe00 net/core/rtnetlink.c:6615 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2543 netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline] netlink_unicast+0x53b/0x810 net/netlink/af_netlink.c:1367 netlink_sendmsg+0x8b7/0xd70 net/netlink/af_netlink.c:1908 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0xd5/0x180 net/socket.c:745 ____sys_sendmsg+0x6ac/0x940 net/socket.c:2584 ___sys_sendmsg+0x135/0x1d0 net/socket.c:2638 __sys_sendmsg+0x117/0x1e0 net/socket.c:2667 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd3/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x454b09 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 b4 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f17479f00f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 0000000000454b09 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 0000000000000a44 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004e4d00 R13: 00007f17479f0674 R14: 000000000054bf00 R15: 000000000050de00 hrtimer: interrupt took 35216397001 ns