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BUG: KFENCE: use-after-free read in __xfrm_state_lookup+0x319/0x8d0

Use-after-free read at 0xffff888136460142 (in kfence-#47):
 __xfrm_state_lookup+0x319/0x8d0
 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

kfence-#47: 0xffff888136460380-0xffff888136460fbf, size=3136, cache=TCP

allocated by task 5876 on cpu 0 at 425.598206s (8.237463s ago):
 sk_prot_alloc+0x57/0x220
 sk_alloc+0x3a/0x370
 inet_create+0x7a0/0x1000
 __sock_create+0x4b3/0x9f0
 __sys_socket+0xd7/0x1b0
 __x64_sys_socket+0x7a/0x90
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

freed by task 5876 on cpu 0 at 425.598334s (8.255999s ago):
 __sk_destruct+0x4d2/0x660
 inet_release+0x144/0x190
 sock_close+0xc3/0x240
 __fput+0x44c/0xa70
 fput_close_sync+0x119/0x200
 __x64_sys_close+0x7f/0x110
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 4020 Comm: syz.0.13529 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+0x319/0x8d0
Code: 30 48 89 4c 24 38 48 c1 e9 03 48 89 4c 24 50 4c 8d b3 42 01 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 7c 03 00 00 <45> 0f b7 36 44 89 f7 44 89 ee e8 78 ed 9e f7 66 45 39 ee 0f 85 2f
RSP: 0018:ffffc90007de70c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888136460000 RCX: 1ffff1100520a647
RDX: ffff888033aeb980 RSI: 0000000000000002 RDI: 000000000000000a
RBP: ffffc90007de71b8 R08: ffff888033aeb980 R09: 0000000000000002
R10: 000000000000000a R11: 0000000000000002 R12: dffffc0000000000
R13: 0000000000000002 R14: ffff888136460142 R15: 0000000000000000
FS:  00007f2902b696c0(0000) GS:ffff8880b861a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff888136460142 CR3: 0000000036d70000 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: 0033:0x7f2901d8ebe9
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:00007f2902b69038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f2901fb5fa0 RCX: 00007f2901d8ebe9
RDX: 0000000000000000 RSI: 0000200000000540 RDI: 0000000000000003
RBP: 00007f2901e11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2901fb6038 R14: 00007f2901fb5fa0 R15: 00007ffd1892c238
 </TASK>
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