rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (0 ticks this GP) idle=68d/1/0x4000000000000002 softirq=21673/21673 fqs=2099 (detected by 1, t=10502 jiffies, g=27665, q=1529) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 7899 Comm: kworker/0:8 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Workqueue: wg-crypt-wg0 wg_packet_tx_worker RIP: 0010:is_sampling_event include/linux/perf_event.h:1139 [inline] RIP: 0010:perf_swevent_event+0x62/0x530 kernel/events/core.c:9600 Code: df 49 8d 9f e8 00 00 00 48 89 d8 48 c1 e8 03 80 3c 08 00 74 08 48 89 df e8 cb 42 25 00 48 8b 1b 31 ff 48 89 de e8 5e e3 e0 ff <48> 85 db 74 5c 49 8d 9f f0 00 00 00 48 89 d8 48 c1 e8 03 48 b9 00 RSP: 0018:ffffc900000075a8 EFLAGS: 00000046 RAX: ffffffff8196e4a2 RBX: 0000000000000005 RCX: ffff8880296b1dc0 RDX: 0000000000000100 RSI: 0000000000000005 RDI: 0000000000000000 RBP: ffff8880b9035178 R08: dffffc0000000000 R09: fffffbfff1ad2dd6 R10: fffffbfff1ad2dd6 R11: 1ffffffff1ad2dd5 R12: 0000000000000001 R13: ffff888018fbdf80 R14: ffffc90000007680 R15: ffff888018fbdf80 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f479ddf3f98 CR3: 000000000be8e000 CR4: 00000000003506f0 DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_tp_event+0x32c/0xb50 kernel/events/core.c:10033 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10007 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713 RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:671 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 7d 16 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc90000007ac0 EFLAGS: 00000206 RAX: 0a19b1d00e10fb00 RBX: 1ffff92000000f5c RCX: 0a19b1d00e10fb00 RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340 RBP: ffffc90000007ba0 R08: dffffc0000000000 R09: fffffbfff1ff6e39 R10: fffffbfff1ff6e39 R11: 1ffffffff1ff6e38 R12: ffffffff8c120800 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [inline] process_backlog+0x3e3/0x780 net/core/dev.c:6517 __napi_poll+0xc0/0x430 net/core/dev.c:7075 napi_poll net/core/dev.c:7142 [inline] net_rx_action+0x4a8/0x9c0 net/core/dev.c:7232 handle_softirqs+0x328/0x820 kernel/softirq.c:576 do_softirq+0x13b/0x200 kernel/softirq.c:477 __local_bh_enable_ip+0x174/0x1b0 kernel/softirq.c:401 wg_socket_send_skb_to_peer+0x167/0x1c0 drivers/net/wireguard/socket.c:184 wg_packet_create_data_done drivers/net/wireguard/send.c:251 [inline] wg_packet_tx_worker+0x1d3/0x790 drivers/net/wireguard/send.c:276 process_one_work+0x863/0x1000 kernel/workqueue.c:2310 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287