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BUG: KASAN: slab-use-after-free in __xfrm_state_delete+0x696/0xca0
Write of size 8 at addr ffff888112998db0 by task syz-executor/10035

CPU: 0 UID: 0 PID: 10035 Comm: syz-executor Not tainted 6.16.0-syzkaller-06620-gae633388cae3-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:
 <IRQ>
 dump_stack_lvl+0x189/0x250
 print_report+0xca/0x240
 kasan_report+0x118/0x150
 __xfrm_state_delete+0x696/0xca0
 xfrm_timer_handler+0x18f/0xa00
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 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:folio_try_get+0xf2/0x340
Code: c9 ff 49 83 c6 34 4c 89 f7 be 04 00 00 00 e8 15 3d 2c 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 03 01 00 00 45 8b 3e <31> ff 44 89 fe e8 a4 1b c9 ff 45 85 ff 0f 84 e1 00 00 00 41 8d 4f
RSP: 0000:ffffc90006c57968 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff81f6986c RCX: ffffffff81f6992b
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea000044fa34
RBP: 0000000000000001 R08: ffffea000044fa37 R09: 1ffffd4000089f46
R10: dffffc0000000000 R11: fffff94000089f47 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffea000044fa34 R15: 0000000000000007
 next_uptodate_folio+0xcb/0x5d0
 filemap_map_pages+0x21f/0x1740
 __handle_mm_fault+0x368a/0x5620
 handle_mm_fault+0x40a/0x8e0
 do_user_addr_fault+0xa81/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7f2693d37100
Code: Unable to access opcode bytes at 0x7f2693d370d6.
RSP: 002b:00007fff25fc8a48 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 00007f2693e135a2 RSI: 0000000000000040 RDI: 00007fff25fc8ae0
RBP: 00007fff25fc8a8c R08: 0000000000000000 R09: 00007f2694aed6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000233
R13: 00000000000927c0 R14: 000000000001e7b6 R15: 00007fff25fc8ae0
 </TASK>

Allocated by task 7230:
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 xfrm_state_alloc+0x24/0x2f0
 __find_acq_core+0x8a7/0x1c00
 xfrm_find_acq+0x78/0xa0
 xfrm_alloc_userspi+0x6b3/0xc90
 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

Freed by task 2204:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x62/0x70
 kmem_cache_free+0x18f/0x400
 xfrm_state_gc_task+0x518/0x6a0
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30

The buggy address belongs to the object at ffff888112998d80
 which belongs to the cache xfrm_state of size 928
The buggy address is located 48 bytes inside of
 freed 928-byte region [ffff888112998d80, ffff888112999120)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888112998d80 pfn:0x112998
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff888105310280 dead000000000122 0000000000000000
raw: ffff888112998d80 00000000800e000b 00000000f5000000 0000000000000000
head: 057ff00000000040 ffff888105310280 dead000000000122 0000000000000000
head: ffff888112998d80 00000000800e000b 00000000f5000000 0000000000000000
head: 057ff00000000002 ffffea00044a6601 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 6055, tgid 6054 (syz.1.64), ts 62439404746, free_ts 62115582322
 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_noprof+0x283/0x3c0
 xfrm_state_alloc+0x24/0x2f0
 __find_acq_core+0x8a7/0x1c00
 xfrm_find_acq+0x78/0xa0
 xfrm_alloc_userspi+0x6b3/0xc90
 xfrm_user_rcv_msg+0x7a3/0xab0
 netlink_rcv_skb+0x208/0x470
 xfrm_netlink_rcv+0x79/0x90
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
page last free pid 5827 tgid 5827 stack trace:
 __free_frozen_pages+0xc71/0xe70
 __slab_free+0x326/0x400
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_noprof+0x1c1/0x3c0
 getname_flags+0xb8/0x540
 do_sys_openat2+0xbc/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888112998c80: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888112998d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888112998d80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                     ^
 ffff888112998e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888112998e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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