rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=abac/1/0x4000000000000000 softirq=25322/25330 fqs=5247
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   914167          0            0
rcu: 	cputime:    24440      28048           98   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=16177 q=2318 ncpus=2)
CPU: 1 UID: 0 PID: 8371 Comm: syz.0.737 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: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:ffffc900001e07a0 EFLAGS: 00000206
RAX: cffc574752542100 RBX: 1ffff9200003c0fc RCX: cffc574752542100
RDX: 0000000000000002 RSI: ffffffff8d998836 RDI: ffffffff8be29f40
RBP: ffffc900001e08a0 R08: ffffffff8fa1e8f7 R09: 1ffffffff1f43d1e
R10: dffffc0000000000 R11: fffffbfff1f43d1f R12: ffffffff8e144400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS:  00007f2a88e2c6c0(0000) GS:ffff8881a3c1f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000018c0 CR3: 00000001205e2000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __rcu_read_unlock+0x84/0xe0
 ndisc_send_skb+0xd12/0x1400
 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:unix_create1+0x36/0x7c0
Code: ec 38 89 cd 89 d3 49 89 f6 49 89 fd e8 73 7e a3 f7 48 c7 c7 20 e6 ff 99 be 08 00 00 00 e8 42 a4 06 f8 f0 48 ff 05 8a 3b e3 0f <48> c7 c7 20 e6 ff 99 be 08 00 00 00 e8 f9 a3 06 f8 4c 8b 3d 72 3b
RSP: 0018:ffffc900089d7d20 EFLAGS: 00000206
RAX: ffffffff8a1caa01 RBX: 0000000000000000 RCX: ffffffff8a1caa8e
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff99ffe620
RBP: 0000000000000001 R08: ffffffff99ffe627 R09: 1ffffffff33ffcc4
R10: dffffc0000000000 R11: fffffbfff33ffcc5 R12: 1ffff110061c3c00
R13: ffff888029738000 R14: ffff888030e1e000 R15: ffffffff8c9fc560
 unix_create+0x154/0x200
 __sock_create+0x4b3/0x9f0
 __sys_socketpair+0x1c5/0x560
 __x64_sys_socketpair+0x9b/0xb0
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2a87f8e9a9
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:00007f2a88e2c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000035
RAX: ffffffffffffffda RBX: 00007f2a881b5fa0 RCX: 00007f2a87f8e9a9
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007f2a88010d69 R08: 0000000000000000 R09: 0000000000000000
R10: 00002000000000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2a881b5fa0 R15: 00007fff75cc5048
 </TASK>
sched: DL replenish lagged too much
