rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=e414/1/0x4000000000000000 softirq=124950/124957 fqs=4008
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   867742          0            0
rcu: 	cputime:    28047      15734           73   ==> 43790(ms)
rcu: 	(t=10501 jiffies g=105005 q=1319 ncpus=2)
CPU: 0 UID: 0 PID: 22986 Comm: syz.6.4733 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:_raw_spin_unlock_irq+0x29/0x50
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 fa 46 40 f6 48 89 df e8 32 be 40 f6 e8 bd 29 6b f6 fb bf 01 00 00 00 <e8> b2 ad 32 f6 65 8b 05 4b 50 20 07 85 c0 74 07 5b c3 cc cc cc cc
RSP: 0000:ffffc90000007c90 EFLAGS: 00000286
RAX: 06944124c5786b00 RBX: ffff8881210260c0 RCX: 06944124c5786b00
RDX: 0000000000000000 RSI: ffffffff8d792409 RDI: 0000000000000001
RBP: ffffc90000007e10 R08: ffffffff8f821f77 R09: 1ffffffff1f043ee
R10: dffffc0000000000 R11: fffffbfff1f043ef R12: ffff8881210260c0
R13: 1ffff92000000fac R14: ffff88801f07cc00 R15: ffffc90000007d60
FS:  00007fd46c7636c0(0000) GS:ffff88818e835000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3bb298 CR3: 00000001a46d6000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __run_timer_base+0x60a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x27d/0x850
 __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:__schedule+0x18a/0x5000
Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 ae 7a cb f6 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 8c 7a cb f6 48 81 3b 9d 6e ac 57 0f 85 5b 19 00
RSP: 0000:ffffc9000a0c7ca0 EFLAGS: 00000246
RAX: 1ffff92001418000 RBX: ffffc9000a0c0000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff8bc082c0 RDI: ffffffff8bc08280
RBP: ffffc9000a0c7ea8 R08: ffffffff8f821f77 R09: 1ffffffff1f043ee
R10: dffffc0000000000 R11: fffffbfff1f043ef R12: ffff88818e835000
R13: 0000000000000000 R14: ffff8881013ed7c0 R15: 1ffff11024207680
 schedule+0x165/0x360
 irqentry_exit+0x156/0x660
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7fd46b85f149
Code: 48 89 3c 25 c0 fe ff ff eb 20 0f 1f 80 00 00 00 00 45 31 c0 31 c9 ba 80 00 00 00 48 89 de bf ca 00 00 00 31 c0 e8 67 06 13 00 <8b> 03 85 c0 74 e1 c7 45 08 00 00 00 00 45 84 e4 74 2d 80 3d 83 65
RSP: 002b:00007fd46c7630f0 EFLAGS: 00000207
RAX: 0000000000000001 RBX: 00007fd46bbe5fa8 RCX: 00007fd46b98f7c9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd46bbe5fac
RBP: 00007fd46bbe5fa0 R08: 3fffffffffffffff R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd46bbe6038 R14: 00007ffd9d7e7050 R15: 00007ffd9d7e7138
 </TASK>
sched: DL replenish lagged too much
