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BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70
Read of size 8 at addr ffff88803659abe8 by task syz-executor/9117

CPU: 0 PID: 9117 Comm: syz-executor Not tainted 6.0.0-rc6-next-20220923 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 print_report+0x172/0x475
 kasan_report+0xbb/0x1c0
 __lock_acquire+0x42c9/0x5e70
 lock_acquire+0x1a2/0x530
 _raw_spin_lock_irq+0x32/0x50
 kmemleak_scan+0x21d/0x16e0
 kmemleak_write+0x570/0x680
 full_proxy_write+0x11d/0x190
 vfs_write+0x2cb/0xd90
 ksys_write+0x127/0x250
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd5a36125c3
Code: 16 00 00 00 eb ae 90 b8 6e 00 00 00 eb a6 e8 44 ef 04 00 0f 1f 40 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007fffaeceb7b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fffaecebdf8 RCX: 00007fd5a36125c3
RDX: 0000000000000004 RSI: 00007fd5a36c8ed9 RDI: 0000000000000003
RBP: 0000000000000002 R08: 00000000000005d4 R09: 00007fffaed21080
R10: 00007fffaed21090 R11: 0000000000000246 R12: 00000000fffffff6
R13: 00007fffaecedef1 R14: 0000000000000000 R15: 000000000016c6a1
 </TASK>

Allocated by task 9051:
 kasan_save_stack+0x1e/0x40
 kasan_set_track+0x21/0x30
 __kasan_slab_alloc+0x58/0x70
 kmem_cache_alloc+0x1b1/0x3e0
 __create_object+0x3d/0xc10
 __kmem_cache_alloc_node+0x224/0x3c0
 __kmalloc_node_track_caller+0x3a/0xb0
 kmemdup+0x28/0x60
 shmem_symlink+0x180/0x690
 vfs_symlink+0x364/0x5b0
 do_symlinkat+0x144/0x2a0
 __x64_sys_symlink+0x75/0x90
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 9118:
 kasan_save_stack+0x1e/0x40
 kasan_set_track+0x21/0x30
 kasan_save_free_info+0x2a/0x50
 __kasan_slab_free+0x106/0x190
 kmem_cache_free+0xf7/0x610
 rcu_core+0x7e2/0x2080
 __do_softirq+0x1c3/0x8f5

Last potentially related work creation:
 kasan_save_stack+0x1e/0x40
 __kasan_record_aux_stack+0x95/0xb0
 call_rcu+0x6a/0xa30
 __kmem_cache_free+0x91/0x400
 shmem_free_in_core_inode+0x8b/0xa0
 i_callback+0x42/0x70
 rcu_core+0x7e2/0x2080
 __do_softirq+0x1c3/0x8f5

Second to last potentially related work creation:
 kasan_save_stack+0x1e/0x40
 __kasan_record_aux_stack+0x95/0xb0
 call_rcu+0x6a/0xa30
 kmem_cache_free+0xbd/0x610
 putname+0xfe/0x140
 user_path_at_empty+0x4d/0x60
 do_faccessat+0x127/0x810
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88803659abd0
 which belongs to the cache kmemleak_object of size 368
The buggy address is located 24 bytes inside of
 368-byte region [ffff88803659abd0, ffff88803659ad40)

The buggy address belongs to the physical page:
page:000000007add5d7a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3659a
head:000000007add5d7a order:1 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 ffff888007c4f780 dead000000120012 0000000000000000
raw: 0000000000000000 dead000000000001 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88803659aa80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88803659ab00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88803659ab80: fb fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb
                                                          ^
 ffff88803659ac00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88803659ac80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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