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BUG: KASAN: slab-use-after-free in __xfrm_state_delete+0x696/0xca0
Write of size 8 at addr ffff888035da5230 by task syz-executor/12502

CPU: 0 UID: 0 PID: 12502 Comm: syz-executor 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
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:local_clock_noinstr+0x4/0xe0
Code: 48 c7 c7 60 76 89 8b e8 4a 0a ad f5 cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <53> 66 90 e8 64 db ff ff 48 03 05 55 5d 29 04 5b e9 d7 e3 02 00 cc
RSP: 0000:ffffc90006d67450 EFLAGS: 00000283
RAX: ffffffff822c828a RBX: 0000000000140cca RCX: ffff88803c141cc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea000045cd40
RBP: ffffc90006d67508 R08: ffffffff8fa39437 R09: 0000000000000000
R10: ffffed10022e6a00 R11: fffffbfff1f47287 R12: fffa800011736000
R13: dffffc0000000000 R14: 1ffffffff1b7b28d R15: 0000000000000000
 local_clock+0x10/0x30
 __set_page_owner+0x7f/0x4a0
 post_alloc_hook+0x240/0x2a0
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 vma_alloc_folio_noprof+0xe4/0x200
 folio_prealloc+0x30/0x180
 do_wp_page+0x1231/0x5800
 __handle_mm_fault+0x1033/0x5440
 handle_mm_fault+0x40a/0x8e0
 do_user_addr_fault+0xa81/0x1390
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x7fbeff0645c2
Code: 13 00 00 4c 8b 05 26 11 e9 00 48 8b 0d df 10 e9 00 31 c0 48 8d ac 24 50 01 00 00 48 8d 15 aa ee 1a 00 be 40 00 00 00 48 89 ef <c6> 05 c7 10 e9 00 01 e8 12 2b 0d 00 31 c0 48 89 ee bf 0f 00 00 00
RSP: 002b:00007fffaf654e20 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 00007fbeff213464 RSI: 0000000000000040 RDI: 00007fffaf654f70
RBP: 00007fffaf654f70 R08: 0000000000000702 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000237
R13: 00000000000927c0 R14: 000000000003087d R15: 00007fffaf6550d0
 </TASK>

Allocated by task 10951:
 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 5904:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kmem_cache_free+0x18f/0x400
 xfrm_state_gc_task+0x52d/0x6b0
 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 ffff888035da5200
 which belongs to the cache xfrm_state of size 928
The buggy address is located 48 bytes inside of
 freed 928-byte region [ffff888035da5200, ffff888035da55a0)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888035da5200 pfn:0x35da4
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801bbcfc80 dead000000000122 0000000000000000
raw: ffff888035da5200 00000000800e0009 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801bbcfc80 dead000000000122 0000000000000000
head: ffff888035da5200 00000000800e0009 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000d76901 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 6248, tgid 6247 (syz.0.96), ts 75513830098, free_ts 69512393383
 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/0x370
 ___slab_alloc+0xbeb/0x1410
 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 5294 tgid 5294 stack trace:
 __free_frozen_pages+0xbc4/0xd30
 __slab_free+0x303/0x3c0
 qlist_free_all+0x97/0x140
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 __kmalloc_noprof+0x224/0x4f0
 tomoyo_realpath_from_path+0xe3/0x5d0
 tomoyo_path_perm+0x213/0x4b0
 security_inode_getattr+0x12f/0x330
 vfs_fstatat+0xb1/0x170
 __x64_sys_newfstatat+0x116/0x190
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888035da5100: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888035da5180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888035da5200: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                     ^
 ffff888035da5280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888035da5300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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