watchdog: BUG: soft lockup - CPU#1 stuck for 128s! [kworker/1:9:15154] Modules linked in: irq event stamp: 1150442 hardirqs last enabled at (1150441): [] native_save_fl arch/x86/include/asm/irqflags.h:26 [inline] hardirqs last enabled at (1150441): [] arch_local_save_flags arch/x86/include/asm/irqflags.h:109 [inline] hardirqs last enabled at (1150441): [] arch_irqs_disabled arch/x86/include/asm/irqflags.h:151 [inline] hardirqs last enabled at (1150441): [] seqcount_lockdep_reader_access+0xaa/0x100 include/linux/seqlock.h:75 hardirqs last disabled at (1150442): [] sysvec_apic_timer_interrupt+0xe/0xc0 arch/x86/kernel/apic/apic.c:1062 softirqs last enabled at (1130026): [] spin_unlock_bh include/linux/spinlock.h:407 [inline] softirqs last enabled at (1130026): [] ptr_ring_consume_bh include/linux/ptr_ring.h:399 [inline] softirqs last enabled at (1130026): [] wg_packet_encrypt_worker+0x16e2/0x1760 drivers/net/wireguard/send.c:293 softirqs last disabled at (1130024): [] spin_lock_bh include/linux/spinlock.h:353 [inline] softirqs last disabled at (1130024): [] ptr_ring_consume_bh include/linux/ptr_ring.h:397 [inline] softirqs last disabled at (1130024): [] wg_packet_encrypt_worker+0x1418/0x1760 drivers/net/wireguard/send.c:293 CPU: 1 UID: 0 PID: 15154 Comm: kworker/1:9 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Workqueue: events_power_efficient gc_worker RIP: 0010:gc_worker+0x1122/0x1890 net/netfilter/nf_conntrack_core.c:1621 Code: 24 0a c5 f7 45 39 f7 0f 92 c0 84 c3 0f 85 f2 02 00 00 45 39 f7 48 bb 00 00 00 00 00 fc ff df 0f 83 76 03 00 00 44 89 7c 24 24 e9 07 c5 f7 e9 3c f1 ff ff e8 9f 15 e4 01 89 c3 31 ff 89 c6 e8 RSP: 0018:ffffc900060af980 EFLAGS: 00000287 RAX: ffffffff8a02f401 RBX: dffffc0000000000 RCX: ffff888025748000 RDX: 0000000000000000 RSI: 0000000000040000 RDI: 00000000000027cc RBP: ffffc900060afad0 R08: ffffffff907a707f R09: 1ffffffff20f4e0f R10: dffffc0000000000 R11: fffffbfff20f4e10 R12: ffff8880770b5250 R13: ffff8880770b52c0 R14: 0000000000040000 R15: 00000000000027cc FS: 0000000000000000(0000) GS:ffff888124dc5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd427eb9ff8 CR3: 0000000056ca6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 1291 Comm: kworker/u8:10 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:csd_lock_wait kernel/smp.c:363 [inline] RIP: 0010:csd_lock kernel/smp.c:396 [inline] RIP: 0010:smp_call_function_many_cond+0x61e/0x1500 kernel/smp.c:944 Code: b6 04 04 84 c0 0f 85 d5 03 00 00 44 8b 3b 44 89 fe 83 e6 01 31 ff e8 31 56 0c 00 41 83 e7 01 75 07 e8 26 51 0c 00 eb 3f f3 90 <48> b8 00 00 00 00 00 fc ff df 41 0f b6 04 04 84 c0 75 0f f7 03 01 RSP: 0018:ffffc9000597f720 EFLAGS: 00000293 RAX: ffffffff81bbac0e RBX: ffff8880b87414c8 RCX: ffff888028ecbe80 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000597f870 R08: ffff888028ecd41f R09: 1ffff110051d9a83 R10: dffffc0000000000 R11: 0000000000000000 R12: 1ffff110170e8299 R13: 0000000000000001 R14: ffff8880b87414c0 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff888124cc5000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe5707fff8 CR3: 000000000eb48000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu include/linux/smp.h:71 [inline] smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2641 [inline] smp_text_poke_batch_finish+0x5fd/0x1110 arch/x86/kernel/alternative.c:2851 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+0xab/0x290 mm/kfence/core.c:902 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560 kthread+0x38b/0x480 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245