rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (1 GPs behind) idle=1984/1/0x4000000000000000 softirq=115125/115126 fqs=5250
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:     7056          0            0
rcu: 	cputime:      310          0        52135   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=100701 q=3323 ncpus=2)
CPU: 1 UID: 0 PID: 24412 Comm: syz.1.5074 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:__xfrm_state_lookup+0x659/0x8d0
Code: 0f e8 1b 16 9f f7 44 8b 7c 24 24 4c 8b 6c 24 28 48 83 c3 28 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 17 84 02 f8 <48> 8b 1b 48 85 db 0f 84 2f 01 00 00 48 83 c3 d8 0f 84 25 01 00 00
RSP: 0018:ffffc9000a71f0c0 EFLAGS: 00000246
RAX: 1ffff110079abb65 RBX: ffff88803cd5db28 RCX: 0000000000080000
RDX: ffffc90009161000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000a71f1b8 R08: ffff88811f658000 R09: 0000000000000002
R10: 000000000000000a R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000002 R14: 000000000000000a R15: 00000000fe000000
FS:  00007fd0fe6a46c0(0000) GS:ffff8881a3c18000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001300 CR3: 000000011100c000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 xfrm_state_add+0x27d/0xc40
 xfrm_add_sa+0x35a1/0x4070
 xfrm_user_rcv_msg+0x7a3/0xab0
 netlink_rcv_skb+0x208/0x470
 xfrm_netlink_rcv+0x79/0x90
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd0fd78eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd0fe6a4038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fd0fd9d5fa0 RCX: 00007fd0fd78eba9
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000004
RBP: 00007fd0fd811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fd0fd9d6038 R14: 00007fd0fd9d5fa0 R15: 00007ffcbfbff8d8
 </TASK>
