RBP: 00007ffe87175e8c R08: 0000000000000000 R09: 0000000000000001 R10: 000055557c8927d0 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000000927c0 R14: 000000000001bb0b R15: 00007ffe87175ee0 watchdog: BUG: soft lockup - CPU#1 stuck for 225s! [syz-executor:5627] Modules linked in: irq event stamp: 1765424 hardirqs last enabled at (1765423): [] irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:507 [inline] hardirqs last enabled at (1765423): [] irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:542 [inline] hardirqs last enabled at (1765423): [] irqentry_exit+0x24d/0xa00 kernel/entry/common.c:167 hardirqs last disabled at (1765424): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1062 softirqs last enabled at (1765422): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (1765422): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (1765422): [] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 softirqs last disabled at (1765389): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (1765389): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (1765389): [] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 CPU: 1 UID: 0 PID: 5627 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline] RIP: 0010:smp_call_function_many_cond+0x593/0x1870 kernel/smp.c:912 Code: 00 fc ff df 48 8b 54 24 08 49 89 d5 49 89 d4 49 c1 ed 03 41 83 e4 07 49 01 c5 41 83 c4 03 e8 54 99 0c 00 f3 90 41 0f b6 45 00 <41> 38 c4 7c 08 84 c0 0f 85 a8 10 00 00 8b 45 08 31 ff 83 e0 01 41 RSP: 0018:ffffc9000374f5f8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81fda5f2 RDX: ffff88802d81be00 RSI: ffffffff81fda5cc RDI: ffff88802d81be00 RBP: ffff8880b84434e0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000003 R13: ffffed101708869d R14: 0000000000000001 R15: ffff8880b853c9c0 FS: 000055557c892500(0000) GS:ffff888123edc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80cbfeb700 CR3: 000000005cb17000 CR4: 0000000000350ef0 Call Trace: on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1077 __flush_tlb_multi arch/x86/include/asm/paravirt.h:46 [inline] flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline] flush_tlb_mm_range+0x45f/0x16f0 arch/x86/mm/tlb.c:1451 dup_mmap+0x1307/0x21b0 mm/mmap.c:1905 dup_mm kernel/fork.c:1543 [inline] copy_mm kernel/fork.c:1595 [inline] copy_process+0x4588/0x8030 kernel/fork.c:2289 kernel_clone+0x176/0x9d0 kernel/fork.c:2748 __do_sys_clone+0xd9/0x120 kernel/fork.c:2889 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1af9dc6a92 Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00 RSP: 002b:00007ffe87175d00 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffe87175d00 RCX: 00007f1af9dc6a92 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffe87175e8c R08: 0000000000000000 R09: 0000000000000001 R10: 000055557c8927d0 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000000927c0 R14: 000000000001bb0b R15: 00007ffe87175ee0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 Workqueue: wg-crypt-wg2 wg_packet_tx_worker RIP: 0010:match_held_lock+0x77/0xb0 kernel/locking/lockdep.c:5337 Code: ff 1f 00 00 48 39 d0 0f 94 c0 0f b6 c0 e9 8c 90 56 f5 90 e8 cb bf 5f f9 85 c0 74 0a 8b 05 f1 27 69 05 85 c0 74 24 90 31 c0 5b 6f 90 56 f5 b8 01 00 00 00 5b e9 64 90 56 f5 31 f6 e8 42 fe ff RSP: 0018:ffffc90000007e20 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff8880b8428418 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff8880b8428418 RDI: ffff88801e6f49a0 RBP: ffff88801e6f3e00 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 00000000ffffffff R13: 0000000000000046 R14: ffff88801e6f49a0 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888123ddc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3d60392ff8 CR3: 000000007ef04000 CR4: 0000000000350ef0 Call Trace: __lock_is_held kernel/locking/lockdep.c:5601 [inline] lock_is_held_type+0x9d/0x140 kernel/locking/lockdep.c:5940 lock_is_held include/linux/lockdep.h:249 [inline] enqueue_hrtimer+0x24f/0x2f0 kernel/time/hrtimer.c:1107 __run_hrtimer kernel/time/hrtimer.c:2048 [inline] __hrtimer_run_queues+0x6ed/0x9c0 kernel/time/hrtimer.c:2096 hrtimer_interrupt+0x3e5/0x940 kernel/time/hrtimer.c:2215 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline] __sysvec_apic_timer_interrupt+0x109/0x470 arch/x86/kernel/apic/apic.c:1068 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0x9e/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:srso_alias_return_thunk+0x0/0xfbef5 arch/x86/lib/retpoline.S:220 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 8d 64 24 08 c3 cc f4 ff ff ff 0f 0b cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc RSP: 0018:ffffc900000f7518 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffff8880540db8c0 RCX: ffffffff898d3465 RDX: ffff88801e6f3e00 RSI: ffffffff898d49d6 RDI: ffff88801e6f3e00 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880540db950 R13: 0000000000000000 R14: 000000000000000e R15: ffff888079dc6000 skb_update_prio net/core/dev.c:4319 [inline] __dev_queue_xmit+0x2066/0x4970 net/core/dev.c:4798 dev_queue_xmit include/linux/netdevice.h:3446 [inline] neigh_hh_output include/net/neighbour.h:544 [inline] neigh_output include/net/neighbour.h:558 [inline] ip_finish_output2+0xf4a/0x2400 net/ipv4/ip_output.c:236 __ip_finish_output.part.0+0x444/0x6f0 net/ipv4/ip_output.c:314 __ip_finish_output net/ipv4/ip_output.c:302 [inline] ip_finish_output net/ipv4/ip_output.c:324 [inline] NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip_output+0x39b/0xc10 net/ipv4/ip_output.c:437 dst_output include/net/dst.h:470 [inline] ip_local_out+0x193/0x1f0 net/ipv4/ip_output.c:131 iptunnel_xmit+0x722/0xd20 net/ipv4/ip_tunnel_core.c:97 send4+0x414/0x1130 drivers/net/wireguard/socket.c:85 wg_socket_send_skb_to_peer+0x18f/0x210 drivers/net/wireguard/socket.c:174 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] wg_packet_tx_worker+0x199/0x7f0 drivers/net/wireguard/send.c:276 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245