rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2678 jiffies s: 25405 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 PID: 5100 Comm: syz-fuzzer Not tainted 6.9.0-rc6-syzkaller-01478-gcdc74c9d06e7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:mark_held_locks kernel/locking/lockdep.c:4262 [inline] RIP: 0010:__trace_hardirqs_on_caller kernel/locking/lockdep.c:4292 [inline] RIP: 0010:lockdep_hardirqs_on_prepare+0x2a3/0x780 kernel/locking/lockdep.c:4359 Code: 10 48 89 de e8 fe ab 00 00 48 ba 00 00 00 00 00 fc ff df 85 c0 0f 84 9d 01 00 00 49 ff c5 41 0f b6 04 17 84 c0 75 33 49 63 06 <48> 83 c3 28 49 83 c4 28 49 39 c5 7c 95 eb 60 44 89 e1 80 e1 07 80 RSP: 0000:ffffc900037d6800 EFLAGS: 00000046 RAX: 0000000000000008 RBX: ffff888027f50b78 RCX: ffffffff8173197a RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff92f405c0 RBP: ffffc900037d68b8 R08: ffffffff92f405c7 R09: 1ffffffff25e80b8 R10: dffffc0000000000 R11: fffffbfff25e80b9 R12: ffff888027f50b98 R13: 0000000000000005 R14: ffff888027f50ad0 R15: 1ffff11004fea15a FS: 000000c000f5b090(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000201e7000 CR3: 000000001e4f0000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61 irqentry_exit+0x63/0x90 kernel/entry/common.c:357 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:ieee80211_tx_dequeue+0x668/0x4a60 net/mac80211/tx.c:3854 Code: 49 8b 07 4c 39 f8 0f 84 1f 3e 00 00 e8 a1 37 9a f6 4c 89 fb 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 68 31 ff f6 <48> 89 9c 24 18 02 00 00 48 8b 03 48 89 44 24 30 4c 8d 70 6c 4c 89 RSP: 0000:ffffc900037d6980 EFLAGS: 00000246 RAX: 1ffff11005a10585 RBX: ffff88802d082c28 RCX: ffff888027f50000 RDX: 0000000000000503 RSI: ffff88802d082c28 RDI: ffff88805e531c70 RBP: ffffc900037d6cf0 R08: ffffffff8afbf337 R09: 1ffff11005a105af R10: dffffc0000000000 R11: ffffed1005a105b0 R12: dffffc0000000000 R13: ffff88802d082c18 R14: ffff88802d082c28 R15: ffff88802d082c28 wake_tx_push_queue net/mac80211/util.c:294 [inline] ieee80211_handle_wake_tx_queue+0x155/0x2d0 net/mac80211/util.c:315 drv_wake_tx_queue net/mac80211/driver-ops.h:1350 [inline] schedule_and_wake_txq net/mac80211/driver-ops.h:1357 [inline] ieee80211_queue_skb+0x1aea/0x24c0 net/mac80211/tx.c:1664 ieee80211_tx+0x2c4/0x470 net/mac80211/tx.c:1966 __ieee80211_subif_start_xmit+0xe91/0x1600 net/mac80211/tx.c:4338 ieee80211_subif_start_xmit+0xde/0x4d0 net/mac80211/tx.c:4532 __netdev_start_xmit include/linux/netdevice.h:4884 [inline] netdev_start_xmit include/linux/netdevice.h:4898 [inline] xmit_one net/core/dev.c:3579 [inline] dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3595 __dev_queue_xmit+0x1b0e/0x3d30 net/core/dev.c:4394 neigh_output include/net/neighbour.h:542 [inline] ip6_finish_output2+0xff8/0x1670 net/ipv6/ip6_output.c:137 ip6_finish_output+0x41e/0x810 net/ipv6/ip6_output.c:222 NF_HOOK include/linux/netfilter.h:314 [inline] ndisc_send_skb+0xab0/0x1380 net/ipv6/ndisc.c:509 addrconf_rs_timer+0x36e/0x660 net/ipv6/addrconf.c:4039 call_timer_fn+0x18e/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1844 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2429 run_timer_base kernel/time/timer.c:2438 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2448 __do_softirq+0x2c6/0x980 kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x57/0xc0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0033:0x66d448 Code: 83 b8 d0 01 00 00 00 75 56 48 89 44 24 30 48 8d 58 20 48 8b 10 4c 8b 40 08 48 8b 52 18 48 89 f1 bf f8 00 00 00 4c 89 c0 ff d2 <48> 8b 54 24 30 48 89 9a d0 01 00 00 83 3d 25 96 ef 01 00 74 16 0f RSP: 002b:000000c00087f508 EFLAGS: 00000202 RAX: 00000000000000f0 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000080000000000 RDI: 0000000000000016 RBP: 000000c00087f528 R08: 0000000000000004 R09: 0000000000000008 R10: 0000000000000001 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000001 R14: 000000c000007d40 R15: 0000000000000010 ip6_tunnel: ip6gretap0 xmit: Local address not yet configured!