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BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70
Read of size 8 at addr ffff888037b0fcc8 by task syz-executor/14149

CPU: 1 PID: 14149 Comm: syz-executor Not tainted 6.0.0-rc6-next-20220921 #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/0x16f0
 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: 0033:0x7f7c597265c3
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:00007ffcba9b9798 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffcba9b9dd8 RCX: 00007f7c597265c3
RDX: 0000000000000004 RSI: 00007f7c597dced9 RDI: 0000000000000003
RBP: 0000000000000002 R08: 00000000000006e0 R09: 00007ffcba9e7080
R10: 00007ffcba9e7090 R11: 0000000000000246 R12: 00000000fffffff6
R13: 00007ffcba9bbef1 R14: 0000000000000000 R15: 00000000001adb03
 </TASK>

Allocated by task 14152:
 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+0x23c/0x3e0
 __alloc_file+0x21/0x240
 alloc_empty_file+0x6d/0x170
 path_openat+0xd4/0x2800
 do_filp_open+0x1b6/0x410
 do_sys_openat2+0x171/0x4c0
 __x64_sys_openat+0x13f/0x1f0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 14:
 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+0x1c8/0x8d0

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
 rcu_core+0x7e2/0x2080
 __do_softirq+0x1c8/0x8d0

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_readlinkat+0xcd/0x2f0
 __x64_sys_readlinkat+0x93/0x100
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff888037b0fcb0
 which belongs to the cache kmemleak_object of size 368
The buggy address is located 24 bytes inside of
 368-byte region [ffff888037b0fcb0, ffff888037b0fe20)

The buggy address belongs to the physical page:
page:00000000d082120a refcount:1 mapcount:0 mapping:0000000000000000 index:0xffffea00005d2720 pfn:0x37b0e
head:00000000d082120a order:1 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 ffff888007c4f780 dead000000120010 ffff888037b0f0e0
raw: ffffea00005d2720 ffffea00005d3420 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888037b0fb80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888037b0fc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
>ffff888037b0fc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb
                                              ^
 ffff888037b0fd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888037b0fd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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