rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (4867 ticks this GP) idle=e034/1/0x4000000000000000 softirq=29328/29329 fqs=5230
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   895474          7            0
rcu: 	cputime:    30116      18532           99   ==> 48660(ms)
rcu: 	(t=10502 jiffies g=25669 q=4175 ncpus=2)
CPU: 1 UID: 0 PID: 9154 Comm: syz.0.910 Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-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:unwind_next_frame+0x223/0x2390
Code: 86 65 18 00 00 44 89 f8 4c 8d 2c 85 e4 8f df 90 4c 89 e8 48 c1 e8 03 0f b6 04 28 84 c0 48 89 eb 0f 85 1c 1c 00 00 45 8b 6d 00 <44> 89 f8 ff c0 48 8d 2c 85 e4 8f df 90 48 89 e8 48 c1 e8 03 0f b6
RSP: 0018:ffffc900001dfa98 EFLAGS: 00000246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 946b9db76074d400
RDX: 00000000000a7bcc RSI: ffffffff8be2fce0 RDI: ffffffff8be2fca0
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8172c025
R10: ffffc900001dfbb8 R11: ffffffff81ac3130 R12: ffffffff8b78ed6f
R13: 00000000001d7fa9 R14: ffffc900001dfb68 R15: 00000000000a78ed
FS:  00007f2ddadd86c0(0000) GS:ffff8881a3c27000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2ddadb6fc8 CR3: 0000000105988000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kmem_cache_free+0x18f/0x400
 icmpv6_rcv+0x14ff/0x1c80
 ip6_protocol_deliver_rcu+0xe0b/0x15c0
 ip6_input_finish+0x191/0x370
 NF_HOOK+0x30c/0x3a0
 ip6_input+0x16a/0x270
 ip6_mc_input+0x5c8/0xaf0
 ip6_sublist_rcv_finish+0x272/0x2a0
 ip6_sublist_rcv+0xb11/0xdd0
 ipv6_list_rcv+0x3e5/0x430
 __netif_receive_skb_list_core+0x2e3/0x800
 netif_receive_skb_list_internal+0x975/0xcc0
 napi_complete_done+0x2f2/0x7c0
 e1000_clean+0xd0b/0x2b00
 __napi_poll+0xc7/0x360
 net_rx_action+0x707/0xe30
 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 ef 84 e9 09 e8 9a 38 36 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:ffffc90002e8f4f8 EFLAGS: 00000282
RAX: 946b9db76074d400 RBX: 0000000000000000 RCX: 946b9db76074d400
RDX: 0000000000000000 RSI: ffffffff8d9b18ae RDI: ffffffff8be2fd00
RBP: ffffc90002e8f550 R08: ffffffff8fa32337 R09: 1ffffffff1f46466
R10: dffffc0000000000 R11: fffffbfff1f46467 R12: ffff8880349d9cc0
R13: dffffc0000000000 R14: ffff8881000f8000 R15: ffff88813663ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 _raw_spin_unlock_irqrestore+0xfd/0x110
 rcu_preempt_deferred_qs_irqrestore+0x8bd/0xce0
 rcu_read_unlock_special+0x475/0x5e0
 __rcu_read_unlock+0x84/0xe0
 futex_private_hash_put+0x20b/0x280
 futex_wake+0x4b2/0x560
 do_futex+0x395/0x420
 __se_sys_futex+0x36f/0x400
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2dd9f8ebe9
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:00007f2ddadd80e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f2dda1b5fa8 RCX: 00007f2dd9f8ebe9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f2dda1b5fac
RBP: 00007f2dda1b5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2dda1b6038 R14: 00007ffd33ce93e0 R15: 00007ffd33ce94c8
 </TASK>
