rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10499 ticks this GP) idle=8fe4/1/0x4000000000000000 softirq=96605/96605 fqs=4839
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1357712          0            0
rcu: 	cputime:    30364      22125           70   ==> 52490(ms)
rcu: 	(t=10500 jiffies g=91653 q=4134 ncpus=2)
CPU: 1 UID: 0 PID: 22824 Comm: syz.2.5038 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:nf_nat_icmp_reply_translation+0x110/0x5e0
Code: 4d 8b b7 d0 00 00 00 4c 89 7c 24 18 49 81 c7 b8 00 00 00 4c 89 f8 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 0c 04 00 00 41 0f b7 07 <49> 01 c6 4c 89 f0 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 0f 04 00 00
RSP: 0018:ffffc90000a07980 EFLAGS: 00000246
RAX: 0000000000000010 RBX: dffffc0000000000 RCX: 0000000000000100
RDX: ffff888174640000 RSI: 0000000000000003 RDI: ffff888110eaafd0
RBP: ffffc90000a07a90 R08: ffff888174640000 R09: 0000000000000002
R10: 0000000000000004 R11: 0000000000000100 R12: ffffc90000a07ba0
R13: 0000000000000003 R14: ffff888117466680 R15: ffff888110eaafb8
FS:  00007fc3fc6c96c0(0000) GS:ffff8882a945c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d214ff8 CR3: 0000000195bb8000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 nf_nat_ipv4_local_fn+0x31f/0x540
 nf_hook_slow+0xc5/0x220
 nf_hook+0x22a/0x3a0
 __ip_local_out+0x558/0x6a0
 ip_local_out+0x2a/0x190
 ip_push_pending_frames+0x8b/0x110
 __icmp_send+0x118d/0x1590
 ipv4_link_failure+0x66c/0xa70
 vti_tunnel_xmit+0x10a4/0x1a00
 dev_hard_start_xmit+0x2d8/0x870
 __dev_queue_xmit+0x16d1/0x3890
 ip_finish_output2+0xca9/0x1070
 ip_output+0x29f/0x450
 __ip_queue_xmit+0x116a/0x1bb0
 __tcp_transmit_skb+0x2b30/0x43e0
 __tcp_retransmit_skb+0xaa1/0x1640
 tcp_retransmit_skb+0x33/0x440
 tcp_retransmit_timer+0x1ac7/0x35f0
 tcp_write_timer+0x15c/0x2d0
 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 e3 e7 e3 f5 e8 4e 86 1d f6 fb bf 01 00 00 00 <e8> c3 a6 ff ff 9c 58 fa a9 00 02 00 00 74 05 e8 24 88 1d f6 bf 01
RSP: 0018:ffffc90007d371a0 EFLAGS: 00000206
RAX: 0000000000003317 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000007 RSI: ffffffff8def8ec0 RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff9011b3b7 R09: 1ffffffff2023676
R10: dffffc0000000000 R11: fffffbfff2023677 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
 irqentry_exit+0x599/0x620
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:__kasan_check_byte+0x0/0x40
Code: 00 48 89 df 4c 89 f6 5b 41 5c 41 5e 41 5f e9 17 fa ff ff 0f 1f 80 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 41 56 53 48 89 f3 49 89 fe e8 8e 15 00 00 84 c0 75 16
RSP: 0018:ffffc90007d372c8 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 00002000003cc000 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff821b4705 RDI: ffffffff8e75e5e0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: ffffc90007d3752c R11: fffff52000fa6eae R12: 0000000000000002
R13: ffffffff8e75e5e0 R14: 0000000000000000 R15: 0000000000000000
 lock_acquire+0x79/0x2e0
 __pte_offset_map+0x45/0x240
 pte_offset_map_rw_nolock+0x3b/0x160
 handle_mm_fault+0x1090/0x3310
 do_user_addr_fault+0x75b/0x1340
 exc_page_fault+0x6a/0xc0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0x75/0x90
Code: 05 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 c1 48 89 c8 48 c1 e9 03 83 e0 07 <f3> 48 a5 89 c1 85 c9 75 91 e9 fd 47 04 00 48 8d 0c c8 eb 86 cc cc
RSP: 0018:ffffc90007d37798 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888190120000 RCX: 0000000000000828
RDX: 0000000000000001 RSI: 00002000003cc000 RDI: ffff888190123ec0
RBP: ffffc90007d378f0 R08: ffff888190127fff R09: 1ffff11032024fff
R10: dffffc0000000000 R11: ffffed1032025000 R12: ffffc90007d37bb8
R13: 00002000003c8140 R14: 0000000000008000 R15: 1ffff92000fa6f77
 _copy_from_iter+0x21b/0x1670
 kcm_sendmsg+0xe0c/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: 0033:0x7fc3fb79c799
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:00007fc3fc6c9028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc3fba15fa0 RCX: 00007fc3fb79c799
RDX: 00000000fffffdef RSI: 0000200000000140 RDI: 0000000000000009
RBP: 00007fc3fb832c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc3fba16038 R14: 00007fc3fba15fa0 R15: 00007ffdc7db8318
 </TASK>
sched: DL replenish lagged too much
