rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (2753 ticks this GP) idle=2c84/1/0x4000000000000000 softirq=31041/31041 fqs=5142
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   663252          2            0
rcu: 	cputime:    13746      13773           36   ==> 27530(ms)
rcu: 	(t=10501 jiffies g=28589 q=4054 ncpus=2)
CPU: 0 UID: 0 PID: 9562 Comm: syz.4.1017 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:__netif_receive_skb_core+0x2980/0x3170
Code: 00 00 48 89 44 24 10 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 34 cd b0 f8 49 8b 5d 00 <4c> 39 eb 0f 84 bd 00 00 00 4c 89 7c 24 58 4c 8d 7b c0 4c 89 f8 48
RSP: 0000:ffffc90000007960 EFLAGS: 00000246
RAX: 1ffff11032c9e01a RBX: ffff8881964f00d0 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000007be0 R08: ffff8881180ed880 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000100 R12: ffff8881122680d8
R13: ffff8881964f00d0 R14: 000000000000dd86 R15: ffff888114169800
FS:  00007f2cbbc8f6c0(0000) GS:ffff88818dc89000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb88014da08 CR3: 000000011403a000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 process_backlog+0x76d/0x1950
 __napi_poll+0xae/0x340
 net_rx_action+0x627/0xf70
 handle_softirqs+0x22a/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:irqentry_exit+0x261/0x760
Code: 16 00 00 b8 00 00 00 c0 4c 8d a0 00 e0 ff 3f 4c 8d 7c 24 10 f7 c7 37 03 00 00 74 64 49 89 fd e8 55 1e 25 f6 4c 89 e8 fb a8 30 <74> 08 e8 18 25 01 00 4c 89 e8 a9 00 01 00 00 74 0b 4c 89 f7 e8 76
RSP: 0000:ffffc900046ffee8 EFLAGS: 00000202
RAX: 0000000000000012 RBX: ffff8881180ed880 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8dfaa584 RDI: ffffffff8c28b0e0
RBP: ffff8881180eee98 R08: ffffffff9030b8f7 R09: 1ffffffff206171e
R10: dffffc0000000000 R11: fffffbfff206171f R12: 00000000ffffe000
R13: 0000000000000012 R14: ffffc900046fff48 R15: ffffc900046ffef8
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f2cbac62f08
Code: ff ff 01 64 48 8b 04 25 00 00 00 00 48 8d b8 d8 fe ff ff e8 4a af 0d 00 85 c0 0f 84 a2 01 00 00 64 f0 83 2c 25 a0 ff ff ff 01 <e8> f3 90 0c 00 48 8b 4c 24 08 8b 00 48 83 b9 88 00 00 00 ff 89 81
RSP: 002b:00007f2cbbc8f050 EFLAGS: 00000246
RAX: ffffffffffffffff RBX: 00007f2cbb015fa0 RCX: 00007f2cbae32d69
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000640
RBP: 00007f2cbae32d69 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2cbb016038 R14: 00007f2cbb015fa0 R15: 00007fff33ff5598
 </TASK>
sched: DL replenish lagged too much
