rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...0: (1 GPs behind) idle=e71c/1/0x4000000000000000 softirq=13569/13571 fqs=2099 rcu: hardirqs softirqs csw/system rcu: number: 0 0 0 rcu: cputime: 0 0 0 ==> 52500(ms) rcu: (detected by 1, t=10502 jiffies, g=7853, q=3175 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 5985 Comm: syz.3.19 Not tainted 6.13.0-rc3-syzkaller-00258-ge84a3bf7f4aa #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:92 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:124 [inline] RIP: 0010:lock_is_held_type+0x57/0x150 kernel/locking/lockdep.c:5917 Code: 85 c0 0f 85 ce 00 00 00 65 4c 8b 25 33 30 da 74 41 8b 94 24 dc 0a 00 00 85 d2 0f 85 b6 00 00 00 48 89 fd 41 89 f6 9c 8f 04 24 48 c7 c7 20 db 6c 8b 45 31 ff e8 09 17 00 00 4d 8d ac 24 e0 0a RSP: 0018:ffffc90000007d40 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff888030dab300 RBP: ffff888030dab300 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888025ddc880 R13: 00000000ffffffff R14: 00000000ffffffff R15: ffff888034be8000 FS: 00007fa20767a6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fa731e7b378 CR3: 00000000347ae000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_is_held include/linux/lockdep.h:249 [inline] advance_sched+0x707/0xc60 net/sched/sch_taprio.c:929 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1865 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0x4c/0x90 kernel/sched/core.c:7078 Code: df 55 65 48 8b 2d 04 00 d9 74 53 48 89 eb 48 c1 eb 03 48 01 c3 bf 01 00 00 00 e8 4f 94 3d f6 e8 2a df 76 f6 fb bf 01 00 00 00 0f 9d ff ff 9c 58 fa f6 c4 02 75 1e bf 01 00 00 00 e8 ad 43 3d RSP: 0018:ffffc90003def228 EFLAGS: 00000206 RAX: 0000000000000293 RBX: ffffed1004bbb910 RCX: 1ffffffff2dcb012 RDX: 0000000000000000 RSI: ffffffff8b6cd860 RDI: 0000000000000001 RBP: ffff888025ddc880 R08: 0000000000000001 R09: fffffbfff2dca399 R10: ffffffff96e51ccf R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 irqentry_exit+0x36/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:lockdep_unregister_key+0x1b2/0x2b0 kernel/locking/lockdep.c:6593 Code: 54 fd ff ff 48 89 df e8 9c c3 ff ff 89 c3 e8 05 d9 ff ff 9c 58 f6 c4 02 0f 85 92 00 00 00 41 f7 c5 00 02 00 00 74 01 fb 84 db <75> 4f 5b 5d 41 5c 41 5d 41 5e 41 5f e9 cd 9d 0a 00 48 c7 c0 74 68 RSP: 0018:ffffc90003def2f8 EFLAGS: 00000246 RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8b6cdb20 RDI: ffffffff8bd1eb60 RBP: ffff88801cfa2a98 R08: ffffffff937ea85e R09: 000000000001476f R10: ffffffff96e128df R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000246 R14: ffffffff96fe2a38 R15: ffff88801cfa2aa0 __qdisc_destroy+0x11a/0x4b0 net/sched/sch_generic.c:1085 qdisc_put+0xab/0xe0 net/sched/sch_generic.c:1111 taprio_attach+0x203/0x370 net/sched/sch_taprio.c:2149 qdisc_graft+0xe12/0x1780 net/sched/sch_api.c:1175 tc_modify_qdisc+0x1145/0x1c40 net/sched/sch_api.c:1793 rtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6931 netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2542 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg net/socket.c:726 [inline] ____sys_sendmsg+0xaaf/0xc90 net/socket.c:2583 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2637 __sys_sendmsg+0x16e/0x220 net/socket.c:2669 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa206785d29 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa20767a038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fa206975fa0 RCX: 00007fa206785d29 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00007fa206801aa8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fa206975fa0 R15: 00007ffed58b0078