RBP: ffffffffffffffff R08: 00007fb9f8ade000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000293 R12: 00007fb9f8c91f80 R13: 00007fb9f8c91f8c R14: 0000000000000226 R15: 00007fb9f8c93980 watchdog: BUG: soft lockup - CPU#1 stuck for 225s! [syz-executor:528] Modules linked in: CPU: 1 PID: 528 Comm: syz-executor Not tainted 5.15.185-syzkaller-1080583-ge678c93d43cc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:rep_nop arch/x86/include/asm/vdso/processor.h:13 [inline] RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline] RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline] RIP: 0010:smp_call_function_many_cond+0x8c1/0x9f0 kernel/smp.c:969 Code: 05 00 84 c0 0f 85 9d 00 00 00 41 8b 1f 89 de 83 e6 01 31 ff e8 70 37 0a 00 83 e3 01 48 8b 5c 24 10 75 07 e8 b1 33 0a 00 eb 42 90 48 b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 75 10 RSP: 0018:ffffc90000a57840 EFLAGS: 00000293 RAX: ffffffff815e7305 RBX: ffff8881f7138e80 RCX: ffff888117c88000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000a57958 R08: dffffc0000000000 R09: ffffed103ee271d3 R10: ffffed103ee271d3 R11: 1ffff1103ee271d2 R12: 1ffff1103ee271d0 R13: 1ffff1103ee07af1 R14: 0000000000000000 R15: ffff8881f703d788 FS: 0000555578ebd480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001000 CR3: 0000000125477000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1135 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1442 [inline] text_poke_bp_batch+0x1cd/0x5a0 arch/x86/kernel/alternative.c:1642 text_poke_flush arch/x86/kernel/alternative.c:1833 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1840 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146 __jump_label_update+0x37c/0x3a0 kernel/jump_label.c:459 jump_label_update+0x39b/0x450 kernel/jump_label.c:830 static_key_disable_cpuslocked+0xc5/0x1a0 kernel/jump_label.c:207 static_key_disable+0x1a/0x30 kernel/jump_label.c:215 tracepoint_remove_func kernel/tracepoint.c:417 [inline] tracepoint_probe_unregister+0x60e/0x890 kernel/tracepoint.c:551 bpf_probe_unregister+0x61/0x70 kernel/trace/bpf_trace.c:1952 bpf_raw_tp_link_release+0x63/0x90 kernel/bpf/syscall.c:2880 bpf_link_free+0x129/0x370 kernel/bpf/syscall.c:2446 bpf_link_put kernel/bpf/syscall.c:2472 [inline] bpf_link_release+0x15f/0x170 kernel/bpf/syscall.c:2480 __fput+0x20b/0x8b0 fs/file_table.c:311 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb9f8b59e5a Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24 RSP: 002b:00007ffc94e60c60 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000007 RCX: 00007fb9f8b59e5a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 RBP: ffffffffffffffff R08: 00007fb9f8ade000 R09: 0000000000000001 R10: 0000000000000001 R11: 0000000000000293 R12: 00007fb9f8c91f80 R13: 00007fb9f8c91f8c R14: 0000000000000226 R15: 00007fb9f8c93980 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted 5.15.185-syzkaller-1080583-ge678c93d43cc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: netns cleanup_net RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:57 [inline] RIP: 0010:halt arch/x86/include/asm/irqflags.h:98 [inline] RIP: 0010:kvm_wait+0xcc/0x140 arch/x86/kernel/kvm.c:912 Code: 20 f6 44 24 21 02 75 24 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 48 0f b6 07 40 38 f0 75 a6 66 90 0f 00 2d 45 95 d6 03 f4 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07 RSP: 0018:ffffc90000086fe0 EFLAGS: 00000046 RAX: 0000000000000003 RBX: ffff8881f7027730 RCX: ffffffff814f2c79 RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff8881f7027730 RBP: ffffc90000087070 R08: dffffc0000000000 R09: ffffed103ee04ee7 R10: ffffed103ee04ee7 R11: 1ffff1103ee04ee6 R12: 1ffff1103ee00001 R13: ffff8881f7038ad4 R14: dffffc0000000000 R15: 1ffff92000010dfc FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001000 CR3: 000000011180a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:597 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x60f/0x9c0 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock include/linux/spinlock.h:187 [inline] __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_lock+0xd8/0xe0 kernel/locking/spinlock.c:154 krc_this_cpu_lock kernel/rcu/tree.c:3234 [inline] add_ptr_to_bulk_krc_lock kernel/rcu/tree.c:3554 [inline] kvfree_call_rcu+0x117/0x7e0 kernel/rcu/tree.c:3645 trie_delete_elem+0x577/0x710 kernel/bpf/lpm_trie.c:-1 bpf_prog_2c29ac5cdc6b1842+0x3a/0x82c bpf_dispatcher_nop_func include/linux/bpf.h:785 [inline] __bpf_prog_run include/linux/filter.h:628 [inline] bpf_prog_run include/linux/filter.h:635 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline] bpf_trace_run3+0xcc/0x1e0 kernel/trace/bpf_trace.c:1916 __bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:52 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x337/0x480 kernel/time/timer.c:592 __mod_timer+0x79f/0xb30 kernel/time/timer.c:-1 add_timer+0x68/0x80 kernel/time/timer.c:1165 __queue_delayed_work+0x173/0x200 kernel/workqueue.c:1697 queue_delayed_work_on+0xdb/0x150 kernel/workqueue.c:1722 queue_delayed_work include/linux/workqueue.h:525 [inline] schedule_delayed_monitor_work kernel/rcu/tree.c:3415 [inline] kvfree_call_rcu+0x41f/0x7e0 kernel/rcu/tree.c:3671 __hw_addr_flush net/core/dev_addr_lists.c:484 [inline] dev_addr_flush+0x186/0x230 net/core/dev_addr_lists.c:513 free_netdev+0x1d7/0x450 net/core/dev.c:11018 wg_destruct+0x2cf/0x300 drivers/net/wireguard/device.c:254 netdev_run_todo+0x773/0x990 net/core/dev.c:10699 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:112 default_device_exit_batch+0x335/0x390 net/core/dev.c:11684 ops_exit_list net/core/net_namespace.c:177 [inline] cleanup_net+0x602/0xad0 net/core/net_namespace.c:599 process_one_work+0x6be/0xba0 kernel/workqueue.c:2325 worker_thread+0xa59/0x1200 kernel/workqueue.c:2472 kthread+0x411/0x500 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287