rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (872 ticks this GP) idle=af3/1/0x4000000000000000 softirq=57416/57417 fqs=1584 
	(t=10502 jiffies g=82609 q=2006)
NMI backtrace for cpu 0
CPU: 0 PID: 19263 Comm: syz.6.3038 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <IRQ>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x3a2/0x3d0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x163/0x280 lib/nmi_backtrace.c:62
 trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
 rcu_dump_cpu_stacks+0x22d/0x380 kernel/rcu/tree_stall.h:349
 print_cpu_stall+0x31f/0x5f0 kernel/rcu/tree_stall.h:633
 check_cpu_stall kernel/rcu/tree_stall.h:727 [inline]
 rcu_pending kernel/rcu/tree.c:3936 [inline]
 rcu_sched_clock_irq+0x6ec/0x1120 kernel/rcu/tree.c:2619
 update_process_times+0x193/0x200 kernel/time/timer.c:2021
 tick_sched_handle kernel/time/tick-sched.c:254 [inline]
 tick_sched_timer+0x37d/0x560 kernel/time/tick-sched.c:1473
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x4b0/0xb60 kernel/time/hrtimer.c:1749
 hrtimer_interrupt+0x397/0x8b0 kernel/time/hrtimer.c:1811
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
 __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1108
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:deref_stack_reg+0x5/0x120 arch/x86/kernel/unwind_orc.c:356
Code: 83 f7 ff ff 44 89 f1 80 e1 07 38 c1 0f 8c db f4 ff ff 4c 89 f7 e8 7b e7 88 00 e9 ce f4 ff ff 66 0f 1f 44 00 00 55 41 57 41 56 <41> 55 41 54 53 48 89 d3 49 89 f6 49 89 ff 49 bc 00 00 00 00 00 fc
RSP: 0018:ffffc900000072d0 EFLAGS: 00000287
RAX: fffffffffffffff0 RBX: ffffc90000007388 RCX: 0000000000000000
RDX: ffffc900000073c8 RSI: ffffc90003a8fa90 RDI: ffffc90000007388
RBP: dffffc0000000000 R08: ffffc90003a8fa90 R09: ffffc900000073d8
R10: dffffc0000000000 R11: fffff52000000e7d R12: ffffffff8e98c597
R13: 1ffffffff1d318b3 R14: ffffc900000073bd R15: ffffffff8e98c596
 unwind_next_frame+0x10bb/0x1cf0 arch/x86/kernel/unwind_orc.c:-1
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 save_stack+0x121/0x230 mm/page_owner.c:119
 __set_page_owner+0x41/0x2d0 mm/page_owner.c:181
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 skb_page_frag_refill+0x225/0x4c0 net/core/sock.c:2667
 add_recvbuf_mergeable drivers/net/virtio_net.c:1361 [inline]
 try_fill_recv+0x6c8/0x1720 drivers/net/virtio_net.c:1402
 virtnet_receive drivers/net/virtio_net.c:1516 [inline]
 virtnet_poll+0x68e/0xe90 drivers/net/virtio_net.c:1617
 __napi_poll+0xbb/0x430 net/core/dev.c:7101
 napi_poll net/core/dev.c:7168 [inline]
 net_rx_action+0x522/0xa80 net/core/dev.c:7258
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:preempt_schedule_irq+0xb6/0x160 kernel/sched/core.c:6799
Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 7f bf 01 00 00 00 e8 15 2a 90 f7 e8 70 fd bc f7 fb bf 01 00 00 00 <e8> d5 b5 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f
RSP: 0018:ffffc90003a8f9e0 EFLAGS: 00000282
RAX: 5fa1c7e953904100 RBX: 0000000000000000 RCX: 5fa1c7e953904100
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: 0000000000000001
RBP: ffffc90003a8fa90 R08: ffffffff8f0e0008 R09: ffffffff8f0e0018
R10: ffffffff8f0e0010 R11: ffffffff8f0e0003 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000751f3c
 irqentry_exit+0x63/0x70 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:put_task_struct include/linux/sched/task.h:116 [inline]
RIP: 0010:wake_up_q+0x78/0xc0 kernel/sched/core.c:954
Code: 74 08 48 89 df e8 68 b4 6b 00 4c 8d b3 b0 f5 ff ff 4c 8b 2b 48 c7 03 00 00 00 00 4c 89 f7 be 03 00 00 00 31 d2 e8 38 69 00 00 <4c> 8d bb d8 f5 ff ff 4c 89 ff be 04 00 00 00 e8 d4 b5 6b 00 b8 ff
RSP: 0018:ffffc90003a8fb50 EFLAGS: 00000286
RAX: 0000000000000001 RBX: ffff88801b1ea810 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: 00000000ffffffff
RBP: ffffc90003a8fc70 R08: ffff88801b1ea7d3 R09: 1ffff1100363d4fa
R10: dffffc0000000000 R11: ffffed100363d4fb R12: dffffc0000000000
R13: 0000000000000001 R14: ffff88801b1e9dc0 R15: 00000000ffffffff
 futex_wake+0x4a9/0x540 kernel/futex/core.c:1702
 do_futex+0xd83/0x12b0 kernel/futex/core.c:3988
 __do_sys_futex kernel/futex/core.c:4060 [inline]
 __se_sys_futex+0x389/0x420 kernel/futex/core.c:4041
 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: 0033:0x7f3176564e59
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:00007f31747be0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f31767ddfa8 RCX: 00007f3176564e59
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f31767ddfac
RBP: 00007f31767ddfa0 R08: 00360d88bef6186a R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f31767de038 R14: 00007ffcb9434030 R15: 00007ffcb9434118
 </TASK>