RBP: 00007feecd010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007feecd1b5fa0 R15: 00007ffc6cc18f58 watchdog: BUG: soft lockup - CPU#0 stuck for 246s! [syz.0.2293:6900] Modules linked in: CPU: 0 PID: 6900 Comm: syz.0.2293 Not tainted 6.1.138-syzkaller-00013-gf6c21bc9a693 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:csd_lock_wait kernel/smp.c:453 [inline] RIP: 0010:smp_call_function_single+0x1f5/0x470 kernel/smp.c:787 Code: 48 44 89 f6 83 e6 01 31 ff e8 d7 77 09 00 41 83 e6 01 49 bc 00 00 00 00 00 fc ff df 75 0a e8 a2 73 09 00 e9 a9 00 00 00 f3 90 44 24 48 01 00 00 00 0f 84 94 00 00 00 e8 88 73 09 00 eb e9 e8 RSP: 0018:ffffc9000c71f560 EFLAGS: 00000246 RAX: ffffffff81667d88 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc90001279000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc9000c71f648 R08: dffffc0000000000 R09: fffff520018e3e85 R10: fffff520018e3e85 R11: 1ffff920018e3e84 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff920018e3eb0 FS: 00007feecdd8b6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fadc1ca9f98 CR3: 000000010af91000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rcu_barrier+0x32e/0x600 kernel/rcu/tree.c:4126 netdev_run_todo+0x10a/0xc00 net/core/dev.c:10435 rtnl_unlock+0xe/0x10 net/core/rtnetlink.c:147 ip_tunnel_delete_nets+0x34b/0x390 net/ipv4/ip_tunnel.c:1154 ipip_exit_batch_net+0x22/0x30 net/ipv4/ipip.c:596 ops_exit_list net/core/net_namespace.c:177 [inline] setup_net+0x8cb/0xcb0 net/core/net_namespace.c:358 copy_net_ns+0x355/0x5c0 net/core/net_namespace.c:481 create_new_namespaces+0x3a2/0x660 kernel/nsproxy.c:110 copy_namespaces+0x1d1/0x220 kernel/nsproxy.c:178 copy_process+0x12d4/0x3470 kernel/fork.c:2374 kernel_clone+0x23a/0x810 kernel/fork.c:2787 __do_sys_clone kernel/fork.c:2930 [inline] __se_sys_clone kernel/fork.c:2914 [inline] __x64_sys_clone+0x168/0x1b0 kernel/fork.c:2914 x64_sys_call+0x990/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:57 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7feeccf8e929 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:00007feecdd8afe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007feecd1b5fa0 RCX: 00007feeccf8e929 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000640c7000 RBP: 00007feecd010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007feecd1b5fa0 R15: 00007ffc6cc18f58 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6968 Comm: syz.2.2316 Not tainted 6.1.138-syzkaller-00013-gf6c21bc9a693 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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:1058 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 d5 ae 13 04 f4 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07 RSP: 0018:ffffc9000cb8f4c0 EFLAGS: 00000046 RAX: 0000000000000003 RBX: ffff8881f7127c40 RCX: ffffffff84f00542 RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881f7127c40 RBP: ffffc9000cb8f550 R08: dffffc0000000000 R09: ffffed103ee24f89 R10: ffffed103ee24f89 R11: 1ffff1103ee24f88 R12: 1ffff1103ee20001 R13: ffff8881f7138c94 R14: dffffc0000000000 R15: 1ffff92001971e98 FS: 00007f0101c086c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000001 CR3: 0000000130dcc000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:603 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x690/0xc40 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock include/linux/spinlock.h:187 [inline] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline] _raw_spin_lock_irqsave+0x108/0x110 kernel/locking/spinlock.c:162 lock_timer_base+0x127/0x270 kernel/time/timer.c:1005 __mod_timer+0x10a/0xb30 kernel/time/timer.c:1078 add_timer+0x68/0x80 kernel/time/timer.c:1218 __queue_delayed_work+0x173/0x200 kernel/workqueue.c:1686 queue_delayed_work_on+0xdb/0x150 kernel/workqueue.c:1711 queue_delayed_work include/linux/workqueue.h:525 [inline] schedule_delayed_monitor_work kernel/rcu/tree.c:3216 [inline] kvfree_call_rcu+0x436/0x7a0 kernel/rcu/tree.c:3472 trie_delete_elem+0x572/0x720 kernel/bpf/lpm_trie.c:545 bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2283 [inline] bpf_trace_run3+0x113/0x270 kernel/trace/bpf_trace.c:2323 __bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:53 __traceiter_timer_start+0x8c/0xe0 include/trace/events/timer.h:53 trace_timer_start include/trace/events/timer.h:53 [inline] enqueue_timer+0x337/0x480 kernel/time/timer.c:615 __mod_timer+0x79f/0xb30 kernel/time/timer.c:-1 mod_timer+0x1f/0x30 kernel/time/timer.c:1172 sk_reset_timer+0x22/0xb0 net/core/sock.c:3390 tipc_sk_finish_conn+0x14e/0x7e0 net/tipc/socket.c:1675 tipc_socketpair+0x2a4/0x520 net/tipc/socket.c:3350 __sys_socketpair+0x2b5/0x5b0 net/socket.c:1740 __do_sys_socketpair net/socket.c:1776 [inline] __se_sys_socketpair net/socket.c:1773 [inline] __x64_sys_socketpair+0x9b/0xb0 net/socket.c:1773 x64_sys_call+0x6e/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:54 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0100d8e929 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:00007f0101c08038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 00007f0100fb5fa0 RCX: 00007f0100d8e929 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 000000000000001e RBP: 00007f0100e10b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000200000000940 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0100fb5fa0 R15: 00007ffe5b3f8c28