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BUG: KASAN: use-after-free in __xfrm_state_lookup+0x6ad/0x8d0
Read of size 2 at addr ffff88810db4ca42 by task syz.1.2187/11265

CPU: 0 UID: 0 PID: 11265 Comm: syz.1.2187 Not tainted 6.16.0-rc7-syzkaller-01993-ge3f96b3556e4-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 print_report+0xca/0x230
 kasan_report+0x118/0x150
 __xfrm_state_lookup+0x6ad/0x8d0
 xfrm_state_add+0x27d/0xc40
 pfkey_add+0x1edd/0x2e00
 pfkey_sendmsg+0xbfe/0x1090
 __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: 0033:0x7f007898e9a9
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:00007f00797c6038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f0078bb5fa0 RCX: 00007f007898e9a9
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000003
RBP: 00007f0078a10d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0078bb5fa0 R15: 00007fff59ae9388
 </TASK>

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88810db4fb80 pfn:0x10db4c
flags: 0x57ff00000000000(node=1|zone=2|lastcpupid=0x7ff)
raw: 057ff00000000000 ffffea00044e5108 ffffea0004609f08 0000000000000000
raw: ffff88810db4fb80 0000000000120000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd2820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 10661, tgid 10653 (syz.0.1944), ts 168015277915, free_ts 170969519229
 post_alloc_hook+0x240/0x2a0
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x8a/0x3b0
 ___slab_alloc+0xbfc/0x1480
 kmem_cache_alloc_node_noprof+0x280/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 tipc_msg_reverse+0x231/0x8f0
 tipc_sk_respond+0xf1/0x2f0
 __tipc_shutdown+0xaa6/0x1520
 tipc_release+0x5c6/0x2160
 sock_close+0xc3/0x240
 __fput+0x44c/0xa70
 fput_close_sync+0x119/0x200
page last free pid 10814 tgid 10813 stack trace:
 __free_frozen_pages+0xc71/0xe70
 __put_partials+0x161/0x1c0
 put_cpu_partial+0x17c/0x250
 __slab_free+0x2f7/0x400
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_node_track_caller_noprof+0x216/0x4e0
 krealloc_noprof+0x124/0x340
 copy_array+0x63/0xf0
 copy_verifier_state+0x848/0xed0
 push_stack+0x197/0x3c0
 check_cond_jmp_op+0x7db/0x2340
 do_check+0x6d3a/0xd450
 do_check_common+0x168d/0x20b0
 bpf_check+0x13664/0x19c60

Memory state around the buggy address:
 ffff88810db4c900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88810db4c980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88810db4ca00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                           ^
 ffff88810db4ca80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88810db4cb00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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