rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (2 ticks this GP) idle=22d/1/0x4000000000000002 softirq=157984/157984 fqs=2100 
	(detected by 1, t=10503 jiffies, g=241165, q=1036)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16325 Comm: syz.0.14795 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:hlock_class kernel/locking/lockdep.c:192 [inline]
RIP: 0010:__lock_acquire+0x1084/0x7c60 kernel/locking/lockdep.c:5008
Code: 7c 24 18 0f 85 f9 02 00 00 48 83 7c 24 70 00 0f 84 34 02 00 00 48 8b 44 24 78 48 8d 58 f8 48 89 d8 48 c1 e8 03 42 0f b6 04 00 <84> c0 0f 85 3c 5d 00 00 8b 03 89 c3 81 e3 ff 1f 00 00 c1 e8 03 25
RSP: 0018:ffffc90000006d80 EFLAGS: 00000802
RAX: 0000000000000000 RBX: ffff888061af0b10 RCX: 00000000d1f0fead
RDX: 000000008a86c2f9 RSI: 00000000f40f0ab6 RDI: ffffffff8ffaa0c0
RBP: ffffc90000006fd0 R08: dffffc0000000000 R09: fffffbfff1ff5419
R10: fffffbfff1ff5419 R11: 1ffffffff1ff5418 R12: 00000000317fc64f
R13: ffff888061af0000 R14: 000000004fe2bad8 R15: ffff888061af0b38
FS:  00007f681a6d66c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31922ff8 CR3: 0000000029f24000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623
 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:313
 rcu_read_lock include/linux/rcupdate.h:740 [inline]
 __perf_event_output kernel/events/core.c:7800 [inline]
 perf_event_output_forward+0x9e/0x280 kernel/events/core.c:7822
 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10047
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021
 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:674
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 ed 11 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:ffffc900000077a0 EFLAGS: 00000206
RAX: 9549b20675eae300 RBX: 1ffff92000000ef8 RCX: 9549b20675eae300
RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800
RBP: ffffc90000007880 R08: dffffc0000000000 R09: ffffed1017207662
R10: ffffed1017207662 R11: 1ffff11017207661 R12: ffffffff8c120c00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 netif_receive_skb_list_internal+0x93a/0xb90 net/core/dev.c:5760
 gro_normal_list net/core/dev.c:5913 [inline]
 napi_complete_done+0x37d/0x830 net/core/dev.c:6651
 virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline]
 virtnet_poll+0x912/0xef0 drivers/net/virtio_net.c:1624
 __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 kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 common_interrupt+0xb5/0xd0 arch/x86/kernel/irq.c:242
 </IRQ>
 <TASK>
 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
RIP: 0010:__sanitizer_cov_trace_switch+0x59/0xe0 kernel/kcov.c:329
Code: 00 41 57 41 56 41 54 53 48 8b 0c cd 88 dd 0e 8a 48 8b 54 24 20 65 4c 8b 05 04 9f 8a 7e 45 31 c9 eb 08 49 ff c1 4c 39 c8 74 77 <4e> 8b 54 ce 10 65 44 8b 1d f2 9e 8a 7e 41 81 e3 00 01 ff 00 74 13
RSP: 0018:ffffc90002defc78 EFLAGS: 00000206
RAX: 000000000000000d RBX: 0000000000000000 RCX: 0000000000000005
RDX: ffffffff816b9dbb RSI: ffffffff8c1384f0 RDI: 0000000000000001
RBP: ffffc90002defe08 R08: ffff888061af0000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000
 do_futex+0xfb/0x1240 kernel/futex/core.c:3966
 __do_sys_futex kernel/futex/core.c:4059 [inline]
 __se_sys_futex+0x3a3/0x430 kernel/futex/core.c:4040
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f681c46f749
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:00007f681a6d60e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f681c6c5fa8 RCX: 00007f681c46f749
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f681c6c5fac
RBP: 00007f681c6c5fa0 R08: 00004aa334c36408 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f681c6c6038 R14: 00007ffc5a5e2760 R15: 00007ffc5a5e2848
 </TASK>