rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (9906 ticks this GP) idle=7b3c/1/0x4000000000000000 softirq=42218/42218 fqs=5143
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1209209          1            0
rcu: 	cputime:    30736      21753           83   ==> 52500(ms)
rcu: 	(t=10502 jiffies g=35377 q=1143 ncpus=2)
CPU: 1 UID: 0 PID: 10895 Comm: syz.8.1340 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:skb_split+0xf15/0x16a0
Code: e8 03 42 0f b6 04 20 84 c0 0f 85 06 05 00 00 48 89 d0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 17 05 00 00 b8 ff ff ff df 23 03 <09> e8 89 03 e9 02 02 00 00 e8 4d 89 63 f8 45 31 ff 48 8b 44 24 68
RSP: 0018:ffffc900001dfa40 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88812b153981 RCX: ffff88810f7ab980
RDX: ffff88812b153984 RSI: 0000000000000004 RDI: ffff88802ad56f38
RBP: 0000000000000000 R08: ffffea0000c9b437 R09: 1ffffd4000193686
R10: dffffc0000000000 R11: fffff94000193687 R12: dffffc0000000000
R13: 000000000000162b R14: ffff888021574f84 R15: ffff888021574fcc
FS:  00007f8d1df4a6c0(0000) GS:ffff8881a3c1c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31610ff8 CR3: 000000003b0f6000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 tcp_write_xmit+0x1483/0x67f0
 __tcp_push_pending_frames+0x97/0x360
 tcp_rcv_established+0xf12/0x1eb0
 tcp_v4_do_rcv+0xa23/0xce0
 tcp_v4_rcv+0x26a6/0x2f40
 ip_protocol_deliver_rcu+0x221/0x440
 ip_local_deliver_finish+0x3bb/0x6f0
 NF_HOOK+0x30c/0x3a0
 ip_sublist_rcv_finish+0x221/0x2a0
 ip_sublist_rcv+0x6e7/0x9b0
 ip_list_rcv+0x3e2/0x430
 __netif_receive_skb_list_core+0x7d2/0x800
 netif_receive_skb_list_internal+0x975/0xcc0
 gro_receive_skb+0x642/0xce0
 e1000_clean_rx_irq+0x980/0x1170
 e1000_clean+0xca4/0x2b00
 __napi_poll+0xc7/0x360
 net_rx_action+0x707/0xe30
 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 2f b7 ea 09 e8 5a 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:ffffc9000684fb38 EFLAGS: 00000282
RAX: 8c09e4a7c5e99900 RBX: 0000000000000000 RCX: 8c09e4a7c5e99900
RDX: 0000000000000000 RSI: ffffffff8d9b6a5f RDI: ffffffff8be33300
RBP: ffffc9000684fb90 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: ffff88810f7ab980
R13: dffffc0000000000 R14: ffff888028873980 R15: ffff88813663ab58
 __schedule+0x17a0/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:its_return_thunk+0x0/0x10
Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc <c3> cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 e9 ab 52 b7 f5 cc
RSP: 0000:ffffc9000684ff30 EFLAGS: 00000286
RAX: 8c09e4a7c5e99900 RBX: ffffc9000684ff58 RCX: 8c09e4a7c5e99900
RDX: 0000000000000000 RSI: ffffffff8d9b6a5f RDI: ffffffff8be33300
RBP: 0000000000000000 R08: ffffffff8fa38037 R09: 1ffffffff1f47006
R10: dffffc0000000000 R11: fffffbfff1f47007 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88810f7ab980 R15: 0000000000000008
 irqentry_exit_to_user_mode+0x51/0x120
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0033:0x7f8d1d05e9ea
Code: 00 ff 89 81 90 00 00 00 75 04 85 c0 74 1e 48 63 54 24 10 48 89 d0 48 c1 e0 04 48 29 d0 48 8d 15 9c bf 23 00 48 83 7c c2 28 00 <74> 0e 48 8b 04 24 c7 80 90 00 00 00 16 00 00 00 48 8b 04 24 80 3d
RSP: 002b:00007f8d1df4a060 EFLAGS: 00000246
RAX: 0000000000007c38 RBX: 00007f8d1d3c5fa0 RCX: 00007f8d1d3c5fa0
RDX: 00007f8d1d29a980 RSI: 0000000000005452 RDI: 0000000000000003
RBP: 00007f8d1d211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8d1d3c6038 R14: 00007f8d1d3c5fa0 R15: 00007ffce9c99e88
 </TASK>
clocksource: Long readout interval, skipping watchdog check: cs_nsec: 101529571603 wd_nsec: 101529566986
