watchdog: BUG: soft lockup - CPU#1 stuck for 143s! [syz.3.1002:9969] Modules linked in: irq event stamp: 13952203 hardirqs last enabled at (13952202): [] irqentry_exit+0x5e8/0x670 kernel/entry/common.c:219 hardirqs last disabled at (13952203): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1056 softirqs last enabled at (48302): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last enabled at (48302): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last enabled at (48302): [] __irq_exit_rcu+0x60/0x150 kernel/softirq.c:723 softirqs last disabled at (48305): [] __do_softirq kernel/softirq.c:656 [inline] softirqs last disabled at (48305): [] invoke_softirq kernel/softirq.c:496 [inline] softirqs last disabled at (48305): [] __irq_exit_rcu+0x60/0x150 kernel/softirq.c:723 CPU: 1 UID: 0 PID: 9969 Comm: syz.3.1002 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:104 [inline] RIP: 0010:__local_bh_enable_ip+0xd8/0x130 kernel/softirq.c:457 Code: 8b e8 bc 8c d4 09 65 66 8b 05 2c e0 fa 10 66 85 c0 75 32 bf 01 00 00 00 e8 05 7d 0b 00 e8 00 8f 43 00 fb 65 8b 05 08 e0 fa 10 <85> c0 75 05 e8 3f 47 ae ff 5b 41 5e c3 cc cc cc cc cc 90 0f 0b 90 RSP: 0018:ffffc90000a08648 EFLAGS: 00000206 RAX: 0000000000000101 RBX: 0000000000000201 RCX: 0000000000000101 RDX: 0000000000000002 RSI: ffffffff8d792148 RDI: ffffffff8bc083e0 RBP: ffffc90000a08910 R08: ffffffff8f822377 R09: 1ffffffff1f0446e R10: dffffc0000000000 R11: fffffbfff1f0446f R12: 0000000000000000 R13: dffffc0000000000 R14: ffffffff8ad47931 R15: ffffc90000a08c68 FS: 00007f74183f36c0(0000) GS:ffff888125f1f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f47d0b73f98 CR3: 0000000031a32000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: spin_unlock_bh include/linux/spinlock.h:396 [inline] ieee80211_rx_handlers+0xb841/0xb8b0 net/mac80211/rx.c:4240 ieee80211_invoke_rx_handlers net/mac80211/rx.c:4262 [inline] ieee80211_prepare_and_rx_handle+0x2576/0x66e0 net/mac80211/rx.c:5132 __ieee80211_rx_handle_packet net/mac80211/rx.c:5405 [inline] ieee80211_rx_list+0x25eb/0x2f90 net/mac80211/rx.c:5544 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5567 ieee80211_rx include/net/mac80211.h:5216 [inline] ieee80211_handle_queued_frames+0xe8/0x1e0 net/mac80211/main.c:452 tasklet_action_common+0x2da/0x4b0 kernel/softirq.c:925 handle_softirqs+0x22b/0x7c0 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x60/0x150 kernel/softirq.c:723 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:preempt_schedule_irq+0x48/0xa0 kernel/sched/core.c:7190 Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 54 bf 01 00 00 00 e8 03 db 35 f6 e8 9e ee 6d f6 fb bf 01 00 00 00 c3 a9 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 24 f0 6d f6 bf 01 RSP: 0018:ffffc9000426e948 EFLAGS: 00000206 RAX: 000000000000bcaf RBX: 0000000000000000 RCX: 0000000000000001 RDX: 0000000000000006 RSI: ffffffff8d792148 RDI: 0000000000000001 RBP: 0000000000000000 R08: ffffffff8f822377 R09: 1ffffffff1f0446e R10: dffffc0000000000 R11: fffffbfff1f0446f R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 irqentry_exit+0x5e3/0x670 kernel/entry/common.c:216 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:should_resched arch/x86/include/asm/preempt.h:104 [inline] RIP: 0010:__local_bh_enable_ip+0xd8/0x130 kernel/softirq.c:457 Code: 8b e8 bc 8c d4 09 65 66 8b 05 2c e0 fa 10 66 85 c0 75 32 bf 01 00 00 00 e8 05 7d 0b 00 e8 00 8f 43 00 fb 65 8b 05 08 e0 fa 10 <85> c0 75 05 e8 3f 47 ae ff 5b 41 5e c3 cc cc cc cc cc 90 0f 0b 90 RSP: 0018:ffffc9000426ea68 EFLAGS: 00000202 RAX: 0000000080000000 RBX: 0000000000000201 RCX: 0000000000000046 RDX: 0000000000000006 RSI: ffffffff8d792148 RDI: ffffffff8bc083e0 RBP: ffffc9000426ebd0 R08: ffffffff8f822377 R09: 1ffffffff1f0446e R10: dffffc0000000000 R11: fffffbfff1f0446f R12: dffffc0000000000 R13: 0000000000000100 R14: ffffffff89a49eea R15: 0000000000000025 ip_set_dump_do+0x43a/0x17e0 net/netfilter/ipset/ip_set_core.c:1597 netlink_dump+0x6e4/0xe90 net/netlink/af_netlink.c:2325 __netlink_dump_start+0x5cb/0x7e0 net/netlink/af_netlink.c:2440 netlink_dump_start include/linux/netlink.h:341 [inline] ip_set_dump+0x13e/0x1c0 net/netfilter/ipset/ip_set_core.c:1717 nfnetlink_rcv_msg+0xb4d/0x1130 net/netfilter/nfnetlink.c:302 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550 nfnetlink_rcv+0x282/0x2590 net/netfilter/nfnetlink.c:669 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 ____sys_sendmsg+0x505/0x820 net/socket.c:2592 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2646 __sys_sendmsg net/socket.c:2678 [inline] __do_sys_sendmsg net/socket.c:2683 [inline] __se_sys_sendmsg net/socket.c:2681 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2681 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f741758f749 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:00007f74183f3038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f74177e6090 RCX: 00007f741758f749 RDX: 0000000000000000 RSI: 0000200000000200 RDI: 000000000000000c RBP: 00007f7417613f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f74177e6128 R14: 00007f74177e6090 R15: 00007ffd675e9918 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 6465 Comm: kworker/u8:20 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216 Code: 8b 3d 54 fe d9 0b 48 89 de 5b e9 23 fc 5a 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 08 10 80 92 65 8b 15 58 18 bf 10 81 e2 00 01 ff 00 RSP: 0018:ffffc900047ef698 EFLAGS: 00000202 RAX: ffffffff81b5644d RBX: 1ffff110170e8129 RCX: ffff888027513d00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc900047ef7e0 R08: ffffffff8f822377 R09: 1ffffffff1f0446e R10: dffffc0000000000 R11: fffffbfff1f0446f R12: ffff8880b8740948 R13: dffffc0000000000 R14: ffff8880b863bb00 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888125e1f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5138be2060 CR3: 000000000dd3a000 CR4: 00000000003526f0 DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000200000000300 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: csd_lock_wait kernel/smp.c:342 [inline] smp_call_function_many_cond+0xcdd/0x1260 kernel/smp.c:877 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1043 on_each_cpu include/linux/smp.h:71 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2711 [inline] smp_text_poke_batch_finish+0x5f9/0x1130 arch/x86/kernel/alternative.c:2921 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146 static_key_enable_cpuslocked+0x128/0x240 kernel/jump_label.c:210 static_key_enable+0x1a/0x20 kernel/jump_label.c:223 toggle_allocation_gate+0xad/0x240 mm/kfence/core.c:874 process_one_work kernel/workqueue.c:3257 [inline] process_scheduled_works+0xad1/0x1770 kernel/workqueue.c:3340 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3421 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x510/0xa50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246