rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2658 jiffies s: 1501 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: 5115 Comm: syz-executor373 Not tainted 6.5.0-rc5-syzkaller-00192-g829c6524d672 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:taprio_dequeue_tc_priority+0x391/0x4b0 net/sched/sch_taprio.c:806 Code: e8 a4 b4 2c f9 44 39 e5 72 15 e8 aa b9 2c f9 49 83 ff 0f 0f 87 d4 00 00 00 8b 44 24 10 89 03 e8 95 b9 2c f9 48 83 7c 24 08 00 <0f> 84 90 fe ff ff e9 2e fe ff ff 4c 89 fe 48 c7 c7 00 9c 46 8e e8 RSP: 0018:ffffc90000007d60 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88806e866394 RCX: 0000000000000100 RDX: ffff888027678000 RSI: ffffffff88594f0b RDI: 0000000000000004 RBP: 000000000000000b R08: 0000000000000004 R09: 000000000000000b R10: 0000000000000010 R11: ffffc90000007ff8 R12: 0000000000000010 R13: ffff888079b0cb60 R14: 000000000000000c R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2f66a822d0 CR3: 000000002be34000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: taprio_dequeue+0x12e/0x5f0 net/sched/sch_taprio.c:868 dequeue_skb net/sched/sch_generic.c:292 [inline] qdisc_restart net/sched/sch_generic.c:397 [inline] __qdisc_run+0x1c4/0x19d0 net/sched/sch_generic.c:415 qdisc_run include/net/pkt_sched.h:125 [inline] qdisc_run include/net/pkt_sched.h:122 [inline] net_tx_action+0x71e/0xc80 net/core/dev.c:5049 __do_softirq+0x218/0x965 kernel/softirq.c:553 invoke_softirq kernel/softirq.c:427 [inline] __irq_exit_rcu kernel/softirq.c:632 [inline] irq_exit_rcu+0xb7/0x120 kernel/softirq.c:644 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline] RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:122 [inline] RIP: 0010:lock_release+0x101/0x680 kernel/locking/lockdep.c:5774 Code: 03 38 d0 7c 08 84 d2 0f 85 bd 04 00 00 8b 3d 76 c9 44 0d 85 ff 0f 84 bc 02 00 00 65 8b 05 77 7e 9b 7e 85 c0 0f 85 ad 02 00 00 <65> 4c 8b 34 25 80 b9 03 00 49 8d be c4 0a 00 00 48 b8 00 00 00 00 RSP: 0018:ffffc90003dcfb68 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffffff8eabd470 RCX: ffffffff81670ab5 RDX: 0000000000000000 RSI: ffffffff8ac81120 RDI: 0000000000000001 RBP: 1ffff920007b9f6f R08: 0000000000000000 R09: fffffbfff1d573ea R10: ffffffff8eab9f57 R11: 0000000000004e5e R12: ffff88807b8c14a0 R13: ffffc90003dcfce8 R14: ffff88807b8c1430 R15: 0000000000000000 up_read+0x16/0x20 kernel/locking/rwsem.c:1615 mmap_read_unlock include/linux/mmap_lock.h:175 [inline] exit_mmap+0x1bb/0x960 mm/mmap.c:3204 __mmput+0x12a/0x4d0 kernel/fork.c:1348 mmput+0x62/0x70 kernel/fork.c:1370 exit_mm kernel/exit.c:567 [inline] do_exit+0x9b4/0x2a20 kernel/exit.c:861 do_group_exit+0xd4/0x2a0 kernel/exit.c:1024 __do_sys_exit_group kernel/exit.c:1035 [inline] __se_sys_exit_group kernel/exit.c:1033 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1033 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2f669feb19 Code: Unable to access opcode bytes at 0x7f2f669feaef. RSP: 002b:00007ffe9ac0edc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f2f669feb19 RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 RBP: 00007f2f66a7f390 R08: ffffffffffffffb8 R09: 0000000100000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2f66a7f390 R13: 0000000000000000 R14: 00007f2f66a81ec0 R15: 00007f2f669cef40 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.610 msecs