rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2675 jiffies s: 2341 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 UID: 0 PID: 5589 Comm: syz-executor.0 Not tainted 6.12.0-rc1-syzkaller-g9852d85ec9d4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:enqueue_hrtimer+0xc9/0x3c0 kernel/time/hrtimer.c:1086 Code: 10 e8 db 64 f8 ff 84 c0 74 0e e8 72 7c 12 00 eb 19 e8 6b 7c 12 00 eb 12 80 3d 45 43 84 0e 01 0f 85 1c 01 00 00 e8 57 7c 12 00 <4d> 89 ef 49 c1 ef 03 43 80 3c 27 00 74 08 4c 89 ef e8 81 2d 7c 00 RSP: 0018:ffffc90000007d28 EFLAGS: 00000006 RAX: ffffffff81825f3e RBX: 0000000000000001 RCX: ffff88802f530000 RDX: 0000000000010000 RSI: ffffffff8c60f840 RDI: ffffffff8c60f800 RBP: 0000000000000001 R08: ffffffff81825f2c R09: 1ffffffff2039cc5 R10: dffffc0000000000 R11: fffffbfff2039cc6 R12: dffffc0000000000 R13: ffff8880b862c980 R14: ffff88802f954340 R15: ffff8880b862c880 FS: 00007f9fc16fe6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9fc05ffd58 CR3: 000000002f7ba000 CR4: 0000000000350ef0 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1708 [inline] __hrtimer_run_queues+0x6cb/0xd50 kernel/time/hrtimer.c:1755 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1026 [inline] __sysvec_apic_timer_interrupt+0x112/0x3f0 arch/x86/kernel/apic/apic.c:1043 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1037 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:preempt_schedule_irq+0xf6/0x1c0 kernel/sched/core.c:6997 Code: 89 f5 49 c1 ed 03 eb 0d 48 f7 03 08 00 00 00 0f 84 8b 00 00 00 bf 01 00 00 00 e8 a5 c8 95 f5 e8 20 36 cf f5 fb bf 01 00 00 00 85 ac ff ff 43 80 7c 3d 00 00 74 08 4c 89 f7 e8 35 24 31 f6 48 RSP: 0018:ffffc90004a1ef40 EFLAGS: 00000286 RAX: 0818d5fecd77cc00 RBX: 1ffff92000943df0 RCX: ffffffff8170bc6a RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001 RBP: ffffc90004a1f000 R08: ffffffff942c580f R09: 1ffffffff2858b01 R10: dffffc0000000000 R11: fffffbfff2858b02 R12: 1ffff92000943de8 R13: 1ffff92000943dec R14: ffffc90004a1ef60 R15: dffffc0000000000 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707 RIP: 0010:lockdep_unregister_key+0x56d/0x610 kernel/locking/lockdep.c:6569 Code: 27 94 48 c7 c6 a0 9a 70 81 e8 0f 46 0a 00 e8 7a 5a 0a 00 e9 e5 fb ff ff e8 e0 ac 54 0a 41 f7 c7 00 02 00 00 74 d0 fb 45 84 f6 <75> cf eb e0 90 0f 0b 90 45 31 f6 e9 62 ff ff ff 90 0f 0b 90 e9 a1 RSP: 0018:ffffc90004a1f0c0 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 1ffff92000943e20 RCX: ffffffff9a3cc903 RDX: 0000000000000001 RSI: ffffffff8c0ad7a0 RDI: ffffffff8c60f860 RBP: ffffc90004a1f188 R08: ffffffff94276237 R09: 1ffffffff284ec46 R10: dffffc0000000000 R11: fffffbfff284ec47 R12: ffffc90004a1f100 R13: 1ffff92000943e1c R14: 0000000000000000 R15: 0000000000000213 __qdisc_destroy+0x165/0x410 net/sched/sch_generic.c:1079 taprio_attach+0x24e/0x390 net/sched/sch_taprio.c:2148 qdisc_graft+0x128d/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:6646 netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f8/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x223/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2602 ___sys_sendmsg net/socket.c:2656 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2685 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: 0033:0x7f9fc0a7cae9 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:00007f9fc16fe0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f9fc0b9bf80 RCX: 00007f9fc0a7cae9 RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 RBP: 00007f9fc0ac847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f9fc0b9bf80 R15: 00007fffb8ee5598