rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=7c0c/1/0x4000000000000000 softirq=12652/12654 fqs=5154
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1209326          0            0
rcu: 	cputime:    24636      27853           78   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=8969 q=9484 ncpus=2)
CPU: 0 UID: 0 PID: 5755 Comm: syz.0.9 Not tainted syzkaller #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:ndisc_send_skb+0xc8e/0x1650
Code: e8 27 2e db f7 4d 8b 3c 24 49 83 e7 fe 49 83 c7 30 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 05 2e db f7 4d 8b 3f <49> 81 ff b0 d8 4a 8a 0f 85 e0 03 00 00 e8 10 f0 6f f7 4c 89 f7 48
RSP: 0018:ffffc900000079a0 EFLAGS: 00000246
RAX: 1ffff110225de096 RBX: ffff88811b7b6000 RCX: ffff8881729abb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007b90 R08: ffff8881729abb80 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000100 R12: ffff88811d022058
R13: dffffc0000000000 R14: ffff8881b68b8000 R15: ffffffff8a4ad8b0
FS:  00007fe645b346c0(0000) GS:ffff88818dcb8000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f093729b1cb CR3: 000000010aace000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 addrconf_rs_timer+0x2d2/0x6c0
 call_timer_fn+0x192/0x5e0
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x225/0x840
 __irq_exit_rcu+0xca/0x220
 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+0x41a/0xbc0
Code: 03 00 00 41 c7 84 24 e0 0d 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 d0 46 10 0a e8 1b de 38 00 fb 4c 8b 65 c8 <49> 8d bc 24 c8 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc90006cbee60 EFLAGS: 00000202
RAX: 00000000001e2ec7 RBX: ffff88812103bc60 RCX: 0000000080000001
RDX: 0000000000000007 RSI: ffffffff8dfa1050 RDI: ffffffff8c2897a0
RBP: ffffc90006cbeeb0 R08: ffffffff902f72f7 R09: 1ffffffff205ee5e
R10: dffffc0000000000 R11: fffffbfff205ee5f R12: ffff8881729abb80
R13: ffff8881729abb80 R14: dffffc0000000000 R15: 1ffff1102420778c
 __schedule+0x1848/0x57a0
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x14f/0x8e0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:rcu_preempt_deferred_qs_irqrestore+0x7c7/0xb90
Code: 65 8b 05 44 9c 8b 11 85 c0 0f 85 d9 01 00 00 4c 89 ff 4c 89 ee e8 99 b2 f9 09 8b 44 24 04 40 08 e8 a8 01 74 14 48 83 c4 78 5b <41> 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 4c 89 ff e8 e2 b0 f9
RSP: 0018:ffffc90006cbf200 EFLAGS: 00000282
RAX: 00000000f1d2c401 RBX: ffff8881729ac044 RCX: 0000000000000000
RDX: 0000000000000007 RSI: ffffffff8dfa1050 RDI: 00000000ffffffff
RBP: ffffffff8e962300 R08: ffffffff902f72f7 R09: 1ffffffff205ee5e
R10: dffffc0000000000 R11: fffffbfff205ee5f R12: ffffffff8e962398
R13: 0000000000000246 R14: ffffffff8e962300 R15: ffffffff8e9622c0
 __rcu_read_unlock+0x83/0xe0
 handle_mm_fault+0x2dd9/0x3050
 do_user_addr_fault+0x744/0x1340
 exc_page_fault+0x6a/0xc0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0x75/0x90
Code: 05 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 c1 48 89 c8 48 c1 e9 03 83 e0 07 <f3> 48 a5 89 c1 85 c9 75 91 e9 7d 5b 04 00 48 8d 0c c8 eb 86 cc cc
RSP: 0018:ffffc90006cbf638 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8881a80a00e8 RCX: 0000000000000cc2
RDX: 0000000000000001 RSI: 000020000008b000 RDI: ffff8881a80a9ca8
RBP: ffffc90006cbf790 R08: ffff8881a80b02b7 R09: 1ffff11035016056
R10: dffffc0000000000 R11: ffffed1035016057 R12: ffffc90006cbfbb8
R13: 0000200000081440 R14: 00000000000101d0 R15: 1ffff92000d97f77
 _copy_from_iter+0x21b/0x1660
 tipc_msg_build+0x493/0xf50
 __tipc_sendstream+0x8f4/0x12a0
 tipc_sendstream+0x55/0x70
 sock_write_iter+0x498/0x4e0
 vfs_write+0x612/0xba0
 ksys_write+0x150/0x270
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe644b9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe645b34028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe644e15fa0 RCX: 00007fe644b9ce59
RDX: 00000000fffffeff RSI: 00002000000005c0 RDI: 0000000000000008
RBP: 00007fe644c32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe644e16038 R14: 00007fe644e15fa0 R15: 00007ffdbd601468
 </TASK>
sched: DL replenish lagged too much
