rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (1 GPs behind) idle=d8b4/1/0x4000000000000000 softirq=31134/31135 fqs=4967
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:   809727          0            0
rcu: 	cputime:    37029      15450           59   ==> 52480(ms)
rcu: 	(t=10500 jiffies g=21433 q=2693 ncpus=2)
CPU: 0 UID: 0 PID: 8728 Comm: syz.3.815 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:put_page+0x32/0x270
Code: fb 49 bf 00 00 00 00 00 fc ff df e8 d8 5b 64 f8 4c 8d 73 08 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 f7 e8 8e f8 c7 f8 <4d> 8b 36 4c 89 f6 48 83 e6 01 31 ff e8 8d 60 64 f8 4c 89 f0 48 83
RSP: 0018:ffffc900000078a0 EFLAGS: 00000246
RAX: 1ffffd4000100481 RBX: ffffea0000802400 RCX: ffff88801e68b980
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffea0000802400
RBP: 0000000000000000 R08: ffff88803fb1cfa3 R09: 1ffff11007f639f4
R10: dffffc0000000000 R11: ffffed1007f639f5 R12: ffff88803fb1cf82
R13: ffff88803fb1cfb0 R14: ffffea0000802408 R15: dffffc0000000000
FS:  00007f7be9ede6c0(0000) GS:ffff8880b861b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000000b CR3: 000000011eaf6000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 00000000000f0602
Call Trace:
 <IRQ>
 skb_release_data+0x49a/0x7c0
 __kfree_skb+0x55/0x70
 tcp_write_queue_purge+0x203/0x300
 tcp_done_with_error+0x43/0xd0
 tcp_retransmit_timer+0x1d16/0x3370
 tcp_write_timer+0x162/0x2e0
 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:finish_task_switch+0x26b/0x950
Code: 0f 84 3c 01 00 00 48 85 db 0f 85 63 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 cf e5 ea 09 e8 da 3f 36 00 fb 4c 8b 65 c0 <49> 8d bc 24 18 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000488fb38 EFLAGS: 00000282
RAX: e4c8540ba37c0600 RBX: 0000000000000000 RCX: e4c8540ba37c0600
RDX: 0000000000000000 RSI: ffffffff8d9b7034 RDI: ffffffff8be33500
RBP: ffffc9000488fb90 R08: ffffffff8fa38237 R09: 1ffffffff1f47046
R10: dffffc0000000000 R11: fffffbfff1f47047 R12: ffff88801e68b980
R13: dffffc0000000000 R14: ffff88801c6b9cc0 R15: ffff88804b03ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:irqentry_exit_to_user_mode+0x51/0x120
Code: 07 85 c0 0f 85 c3 00 00 00 e8 3b d2 30 f6 65 4c 8b 34 25 08 50 a0 92 49 8b 3e f7 c7 1e 30 02 00 74 53 49 89 ff e8 2f d1 30 f6 <4c> 89 f8 a8 18 74 08 e8 63 1a 01 00 4c 89 f8 a9 00 10 00 00 74 0b
RSP: 0000:ffffc9000488ff38 EFLAGS: 00000286
RAX: e4c8540ba37c0600 RBX: ffffc9000488ff58 RCX: e4c8540ba37c0600
RDX: 0000000000000000 RSI: ffffffff8d9b7034 RDI: ffffffff8be33500
RBP: 0000000000000000 R08: ffffffff8fa38237 R09: 1ffffffff1f47046
R10: dffffc0000000000 R11: fffffbfff1f47047 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88801e68b980 R15: 000000000000000a
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7f7be8f3bb87
Code: 7f 02 00 00 89 c1 83 c0 08 49 03 4d 10 41 89 45 00 8b 01 b9 ff ff ff ff 44 0f b6 62 02 85 c0 0f 49 c8 41 89 ca e9 bf ef ff ff <4c> 89 f7 e8 41 d7 f0 ff 49 89 c4 e9 b8 eb ff ff 4c 63 bc 24 88 00
RSP: 002b:00007f7be9edd7d0 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 00007f7be9eddd30 RCX: 00007f7be9188120
RDX: 00007f7be9eddee8 RSI: 00007f7be9011b31 RDI: 00007f7be9eddfab
RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000000 R12: 0000000000000073
R13: 00007f7be9eddeb0 R14: 0000200000000300 R15: 0000000000000000
 </TASK>
sched: DL replenish lagged too much
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 105369596763 wd_nsec: 105369599270
