rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10137 ticks this GP) idle=4c24/1/0x4000000000000000 softirq=22483/22485 fqs=5111
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   867398          0            0
rcu: 	cputime:    34973      17515           54   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=18449 q=3918 ncpus=2)
CPU: 1 UID: 0 PID: 7433 Comm: syz.2.437 Not tainted 6.17.0-rc1-syzkaller-00022-g07866544e410-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:__sanitizer_cov_trace_const_cmp1+0x11/0x90
Code: 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 65 48 8b 14 25 08 40 a0 92 <65> 8b 0d 68 91 e0 10 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75
RSP: 0018:ffffc900001dfc80 EFLAGS: 00000247
RAX: ffffffff8a2c8b60 RBX: ffffc900001dfde0 RCX: ffffffff8a2c8b47
RDX: ffff888022ab0000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 0000000000000003 R08: ffffc900001dfdf7 R09: 1ffff9200003bfbe
R10: dffffc0000000000 R11: fffff5200003bfbf R12: ffff888109c88000
R13: dffffc0000000000 R14: 0000000000000003 R15: 0000000000000001
FS:  00007f3eb2c706c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557d66391c78 CR3: 000000003b644000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000d0602
Call Trace:
 <IRQ>
 ipv6_get_saddr_eval+0x220/0xee0
 __ipv6_dev_get_saddr+0x19d/0x440
 ipv6_dev_get_saddr+0x363/0xb70
 ip6_dst_lookup_tail+0xf2c/0x1510
 ip6_dst_lookup_flow+0x47/0xe0
 udp_tunnel6_dst_lookup+0x234/0x3c0
 geneve_xmit+0xd2e/0x2b70
 dev_hard_start_xmit+0x2d7/0x830
 __dev_queue_xmit+0x1b8d/0x3b50
 ip6_finish_output2+0x11fe/0x16a0
 ndisc_send_skb+0xb54/0x1440
 addrconf_rs_timer+0x369/0x670
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 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 cf b7 ea 09 e8 5a 3f 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:ffffc90003b4f718 EFLAGS: 00000286
RAX: b55a681870b9de00 RBX: 0000000000000000 RCX: b55a681870b9de00
RDX: 0000000000000006 RSI: ffffffff8d9b6df1 RDI: ffffffff8be33300
RBP: ffffc90003b4f770 R08: ffffffff8fa37e37 R09: 1ffffffff1f46fc6
R10: dffffc0000000000 R11: fffffbfff1f46fc7 R12: ffff888022ab0000
R13: dffffc0000000000 R14: ffff8880207a9cc0 R15: ffff88813663ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_common+0x83/0xd0
 preempt_schedule+0xae/0xc0
 preempt_schedule_thunk+0x16/0x30
 smp_call_function_single+0x470/0x590
 perf_install_in_context+0x593/0x8f0
 __se_sys_perf_event_open+0x193a/0x1d70
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3eb1d8ebe9
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:00007f3eb2c70038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f3eb1fb5fa0 RCX: 00007f3eb1d8ebe9
RDX: affffff7ffffffff RSI: 0000000000000000 RDI: 0000200000000180
RBP: 00007f3eb1e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3eb1fb6038 R14: 00007f3eb1fb5fa0 R15: 00007ffde8514cb8
 </TASK>
