RBP: 00007fe5a52c103b R08: 0000000000000004 R09: 0000000000000000 R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe5a54b2218 R14: 00007fe5a54b2180 R15: 00007ffd851006f8 watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz.1.3454:15024] Modules linked in: CPU: 1 PID: 15024 Comm: syz.1.3454 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:tipc_sk_rcv+0x258/0x1df0 net/tipc/socket.c:-1 Code: 1b 00 48 8b 84 24 48 01 00 00 80 3c 18 00 74 08 4c 89 e7 e8 7a f5 37 fd 4c 89 e0 4d 8b 24 24 49 39 c4 0f 84 b6 00 00 00 31 ff <44> 89 f6 e8 40 78 fd fc 41 b5 01 4d 8d bc 24 e0 00 00 00 4c 89 f8 RSP: 0018:ffffc900019d6a00 EFLAGS: 00000246 RAX: ffffc900019d6e40 RBX: dffffc0000000000 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000004 RDI: 0000000000000000 RBP: ffffc900019d6c70 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff5200033ad30 R12: ffff88810d514000 R13: ffff88812324b280 R14: 00000000ae6d65a1 R15: 00000000ae6d65a1 FS: 00007fe5a3c416c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002700 CR3: 0000000121aac000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: tipc_node_xmit+0x36c/0xd80 net/tipc/node.c:1679 tipc_node_xmit_skb net/tipc/node.c:1744 [inline] tipc_node_distr_xmit+0x277/0x390 net/tipc/node.c:1759 tipc_sk_rcv+0x1913/0x1df0 net/tipc/socket.c:2503 tipc_node_xmit+0x36c/0xd80 net/tipc/node.c:1679 tipc_sk_push_backlog net/tipc/socket.c:1307 [inline] tipc_sk_filter_connect net/tipc/socket.c:2259 [inline] tipc_sk_filter_rcv+0x19ad/0x3860 net/tipc/socket.c:2368 tipc_sk_enqueue net/tipc/socket.c:2448 [inline] tipc_sk_rcv+0x745/0x1df0 net/tipc/socket.c:2499 tipc_node_xmit+0x36c/0xd80 net/tipc/node.c:1679 tipc_node_xmit_skb net/tipc/node.c:1744 [inline] tipc_node_distr_xmit+0x277/0x390 net/tipc/node.c:1759 tipc_sk_backlog_rcv+0x174/0x220 net/tipc/socket.c:2416 sk_backlog_rcv include/net/sock.h:1071 [inline] __release_sock+0x146/0x360 net/core/sock.c:2588 release_sock net/core/sock.c:3141 [inline] sock_setsockopt+0x1801/0x2620 net/core/sock.c:1256 __sys_setsockopt+0x272/0x480 net/socket.c:2143 __do_sys_setsockopt net/socket.c:2158 [inline] __se_sys_setsockopt net/socket.c:2155 [inline] __x64_sys_setsockopt+0xbf/0xd0 net/socket.c:2155 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fe5a522a159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe5a3c41028 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007fe5a54b2180 RCX: 00007fe5a522a159 RDX: 0000000000000021 RSI: 0000000000000001 RDI: 000000000000008d RBP: 00007fe5a52c103b R08: 0000000000000004 R09: 0000000000000000 R10: 00002000000001c0 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe5a54b2218 R14: 00007fe5a54b2180 R15: 00007ffd851006f8 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 1689 Comm: kworker/u4:5 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:229 [inline] RIP: 0010:smp_call_function_single+0x209/0x490 kernel/smp.c:517 Code: 48 44 89 f6 83 e6 01 31 ff e8 63 90 0a 00 41 83 e6 01 49 bc 00 00 00 00 00 fc ff df 75 0a e8 9e 8c 0a 00 e9 a4 00 00 00 f3 90 44 24 48 01 00 00 00 0f 84 8f 00 00 00 e8 84 8c 0a 00 eb e9 e8 RSP: 0018:ffffc90007f17700 EFLAGS: 00000293 RAX: ffffffff815a282c RBX: 0000000000000000 RCX: ffff888111520000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90007f177f0 R08: ffff8881f7157647 R09: 1ffff1103ee2aec8 R10: dffffc0000000000 R11: ffffed103ee2aec9 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff92000fe2ee4 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd053cbfe6e CR3: 000000000640f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: smp_call_function_many_cond+0x8f5/0x9d0 kernel/smp.c:653 smp_call_function_many kernel/smp.c:716 [inline] smp_call_function kernel/smp.c:738 [inline] on_each_cpu+0xab/0x180 kernel/smp.c:837 text_poke_sync arch/x86/kernel/alternative.c:1568 [inline] text_poke_bp_batch+0x1cb/0x5f0 arch/x86/kernel/alternative.c:1768 text_poke_flush arch/x86/kernel/alternative.c:1959 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1966 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:126 __jump_label_update+0x38f/0x3b0 kernel/jump_label.c:459 jump_label_update+0x34c/0x3e0 kernel/jump_label.c:825 static_key_enable_cpuslocked+0x126/0x240 kernel/jump_label.c:177 static_key_enable+0x1a/0x30 kernel/jump_label.c:190 toggle_allocation_gate+0xba/0x440 mm/kfence/core.c:624 process_one_work+0x6fd/0xbc0 kernel/workqueue.c:2301 worker_thread+0xa8e/0x13c0 kernel/workqueue.c:2447 kthread+0x324/0x3b0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298