rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=98ac/1/0x4000000000000000 softirq=14337/14342 fqs=2903
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1042438          0            0
rcu: 	cputime:    33402      18487           84   ==> 51890(ms)
rcu: 	(t=10500 jiffies g=6161 q=2368 ncpus=2)
CPU: 1 UID: 0 PID: 6106 Comm: syz.1.68 Not tainted 6.16.0-rc6-syzkaller-00411-g95993dc3039e #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:nf_nat_ipv6_out+0x70/0x380
Code: bc 00 00 00 00 00 fc ff df 4c 8d 7b 38 4c 89 f8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 a2 02 00 00 41 0f b7 2f 89 ee 83 e6 01 <31> ff e8 09 b9 17 f8 83 e5 01 0f 85 8c 01 00 00 4c 8d 7b 68 4c 89
RSP: 0018:ffffc900001e06c0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88810747ad80 RCX: 0000000000000100
RDX: ffff888022695640 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffff888022695640 R09: 0000000000000004
R10: 0000000000000003 R11: ffffffff89a87310 R12: dffffc0000000000
R13: ffff88811033c928 R14: ffffc900001e07c0 R15: ffff88810747adb8
FS:  00007f8c2911c6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7a552395ec CR3: 0000000028336000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 nf_hook_slow+0xc5/0x220
 nf_hook+0x217/0x380
 ip6_output+0x27d/0x3e0
 ndisc_send_skb+0xb47/0x1400
 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:lock_acquire+0x175/0x360
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 9b d3 01 11 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90002d7f5d8 EFLAGS: 00000206
RAX: b4904914cd337000 RBX: 0000000000000000 RCX: b4904914cd337000
RDX: 0000000000000001 RSI: ffffffff8db86553 RDI: ffffffff8be29f40
RBP: ffffffff8172aae5 R08: 0000000000000000 R09: ffffffff8172aae5
R10: ffffc90002d7f798 R11: ffffffff81ad0050 R12: 0000000000000002
R13: ffffffff8e13f0e0 R14: 0000000000000000 R15: 0000000000000246
 unwind_next_frame+0xc2/0x2390
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 security_sk_alloc+0x52/0x390
 sk_prot_alloc+0x101/0x220
 sk_alloc+0x3a/0x370
 tipc_sk_create+0x164/0x28e0
 __sock_create+0x4b3/0x9f0
 __sys_socketpair+0x23a/0x560
 __x64_sys_socketpair+0x9b/0xb0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c2838e9a9
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:00007f8c2911c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f8c285b6080 RCX: 00007f8c2838e9a9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 000000000000001e
RBP: 00007f8c28410d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000200000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8c285b6080 R15: 00007ffd4b5d6118
 </TASK>
sched: DL replenish lagged too much
