rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=d314/1/0x4000000000000000 softirq=60820/60823 fqs=5025
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1128001          0            0
rcu: 	cputime:    30792      21687           87   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=46477 q=10539 ncpus=2)
CPU: 1 UID: 0 PID: 14641 Comm: syz.8.2302 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:kmem_cache_alloc_noprof+0xe9/0x650
Code: 00 00 00 e8 e9 0e 70 ff 4d 8b 3e e8 a1 21 8a 09 41 89 c4 83 f8 08 0f 83 d5 03 00 00 4a 8b 2c e5 90 d7 1a 8e 42 80 7c 3d 30 00 <74> 61 bf 01 00 00 00 e8 5b 10 70 ff 65 8b 05 04 f5 f7 10 85 c0 4c
RSP: 0018:ffffc90000a088d8 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000820 RCX: 0000000000000102
RDX: 0000000000000000 RSI: ffffffff8c27b3e0 RDI: ffffffff8c27b3a0
RBP: ffff8882a9463000 R08: ffff8881ae2075ab R09: 1ffff11035c40eb5
R10: dffffc0000000000 R11: ffffed1035c40eb6 R12: 0000000000000001
R13: 0000000000000001 R14: ffff888111162280 R15: 0000607d567baf28
FS:  00007f7bcd9fc6c0(0000) GS:ffff8882a9463000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000001e8000 CR3: 000000016ef4a000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 dst_alloc+0x105/0x170
 icmp6_dst_alloc+0x75/0x440
 ndisc_send_skb+0x44a/0x1670
 addrconf_rs_timer+0x395/0x6d0
 call_timer_fn+0x192/0x640
 __run_timer_base+0x652/0x8b0
 run_timer_softirq+0xb7/0x170
 handle_softirqs+0x22a/0x870
 __irq_exit_rcu+0x5f/0x150
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0x48/0xa0
Code: 49 be 00 00 00 00 00 fc ff df eb 09 48 f7 03 10 00 00 00 74 53 bf 01 00 00 00 e8 63 d5 e4 f5 e8 1e 70 1e f6 fb bf 01 00 00 00 <e8> c3 a6 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 f4 71 1e f6 bf 01
RSP: 0018:ffffc900068cefb0 EFLAGS: 00000202
RAX: 0000000000003251 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000006 RSI: ffffffff8def4b84 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff90118bb7 R09: 1ffffffff2023176
R10: dffffc0000000000 R11: fffffbfff2023177 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x599/0x620
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:debug_lockdep_rcu_enabled+0xd/0x40
Code: 8d 67 48 0f b9 3a 90 eb ca cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 31 c0 83 3d b3 a4 63 04 00 <74> 1d 83 3d aa d6 63 04 00 74 14 65 48 8b 0d e8 e7 6d 07 31 c0 83
RSP: 0018:ffffc900068cf0d0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffffffff912bd401 RCX: ffffc900068cf908
RDX: ffffc900068cf101 RSI: dffffc0000000000 RDI: ffffc900068cf1b0
RBP: dffffc0000000000 R08: ffffc900068cf8f0 R09: 0000000000000000
R10: ffffc900068cf1f8 R11: fffff52000d19e41 R12: ffffc900068cf900
R13: ffffc900068c8000 R14: ffffc900068cf1a8 R15: ffffffff81767de5
 unwind_next_frame+0x1a5d/0x23c0
 arch_stack_walk+0x11b/0x150
 stack_trace_save+0xa9/0x100
 save_stack+0x122/0x230
 __set_page_owner+0x8d/0x4c0
 post_alloc_hook+0x231/0x280
 get_page_from_freelist+0x24dc/0x2580
 __alloc_frozen_pages_noprof+0x18d/0x380
 alloc_pages_mpol+0x232/0x4a0
 alloc_pages_noprof+0xa8/0x190
 skb_page_frag_refill+0x179/0x310
 sk_page_frag_refill+0x4c/0x140
 kcm_sendmsg+0x634/0x2b60
 sock_write_iter+0x49b/0x4f0
 vfs_write+0x61d/0xb90
 ksys_write+0x150/0x270
 do_syscall_64+0x14d/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7bccb9c799
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:00007f7bcd9fc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7bcce15fa0 RCX: 00007f7bccb9c799
RDX: 00000000fffffdef RSI: 0000200000000140 RDI: 0000000000000004
RBP: 00007f7bccc32c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7bcce16038 R14: 00007f7bcce15fa0 R15: 00007ffefc7fbd28
 </TASK>
sched: DL replenish lagged too much
