rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-....: (0 ticks this GP) idle=7d64/1/0x4000000000000000 softirq=13984/13984 fqs=5250
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1135025          0            0
rcu: 	cputime:    16823      35693            0   ==> 52510(ms)
rcu: 	(detected by 0, t=10502 jiffies, g=7669, q=828 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5930 Comm: syz.2.9 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:native_apic_msr_eoi+0xf/0x20
Code: f8 c3 cc cc cc cc cc 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa b9 0b 08 00 00 31 c0 31 d2 0f 30 <e9> 8c 24 00 0a cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90
RSP: 0018:ffffc900001e0640 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffc900001e0678 RCX: 000000000000080b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: ffff888136623b0f R09: 1ffff11026cc4761
R10: dffffc0000000000 R11: ffffed1026cc4762 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007fcc86c1c6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd6ebe82d58 CR3: 000000010c230000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 __sysvec_irq_work+0x11/0x3d0
 sysvec_irq_work+0x4f/0xc0
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:rcu_read_unlock_special+0x87/0x4c0
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 62 2c f8 10 41 f7 c6 00 00 f0 00 74 49 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900001e0720 EFLAGS: 00000206
RAX: 682d054f49ef1200 RBX: 1ffff9200003c0ec RCX: 682d054f49ef1200
RDX: 0000000000000000 RSI: ffffffff8d998940 RDI: ffffffff8be29f40
RBP: ffffc900001e0818 R08: ffffffff8fa1e9f7 R09: 1ffffffff1f43d3e
R10: dffffc0000000000 R11: fffffbfff1f43d3f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
 __rcu_read_unlock+0x84/0xe0
 unwind_next_frame+0x19ae/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 ref_tracker_free+0xef/0x7d0
 dst_destroy+0x10f/0x350
 rcu_core+0xca8/0x1710
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 0f 2a df 09 e8 ba b9 35 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000495f7b8 EFLAGS: 00000286
RAX: 682d054f49ef1200 RBX: 0000000000000000 RCX: 682d054f49ef1200
RDX: 0000000000000000 RSI: ffffffff8d998940 RDI: ffffffff8be29f40
RBP: ffffc9000495f810 R08: ffffffff8fa1e9f7 R09: 1ffffffff1f43d3e
R10: dffffc0000000000 R11: fffffbfff1f43d3f R12: ffff88810cb95640
R13: dffffc0000000000 R14: ffff88810cb93980 R15: ffff88813663ab98
 __schedule+0x16fd/0x4d00
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 try_to_wake_up+0x81b/0x1290
 wake_up_q+0xb6/0x110
 futex_wake+0x458/0x500
 do_futex+0x395/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc85d8e9a9
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:00007fcc86c1c0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007fcc85fb5fa8 RCX: 00007fcc85d8e9a9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fcc85fb5fac
RBP: 00007fcc85fb5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fcc85fb5fac
R13: 0000000000000000 R14: 00007ffecf8d0200 R15: 00007ffecf8d02e8
 </TASK>
