FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
==================================================================
BUG: KASAN: use-after-free in perf_trace_lock_acquire+0x3fe/0x530
Read of size 8 at addr ffff888015dae030 by task syz-executor/11953

CPU: 0 PID: 11953 Comm: syz-executor Not tainted 6.0.0-next-20221011 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x8b/0xb3
 print_report+0x172/0x475
 kasan_report+0xbb/0x1c0
 perf_trace_lock_acquire+0x3fe/0x530
 lock_acquire+0x413/0x530
 _raw_spin_lock_irq+0x32/0x50
 kmemleak_scan+0x21d/0x16d0
 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: 0033:0x7f5f5731e5c3
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:00007fff831435a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fff83143be8 RCX: 00007f5f5731e5c3
RDX: 0000000000000004 RSI: 00007f5f573d4ed9 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000700 R09: 00007fff83195080
R10: 00007fff83195090 R11: 0000000000000246 R12: 00000000fffffff6
R13: 00007fff83144ef1 R14: 0000000000000000 R15: 00000000001b59bd
 </TASK>

Allocated by task 11801:
 kasan_save_stack+0x1e/0x40
 kasan_set_track+0x21/0x30
 __kasan_slab_alloc+0x58/0x70
 kmem_cache_alloc+0x1a9/0x3e0
 __create_object+0x3d/0xc10
 __kmem_cache_alloc_node+0x22f/0x3d0
 __kmalloc_node+0x3c/0xb0
 kvmalloc_node+0x41/0x200
 simple_xattr_alloc+0x43/0xa0
 simple_xattr_set+0x75/0x610
 shmem_xattr_handler_set+0x42/0xc0
 __vfs_setxattr+0x115/0x180
 __vfs_setxattr_noperm+0x125/0x600
 __vfs_setxattr_locked+0x1d3/0x260
 vfs_setxattr+0x13f/0x330
 setxattr+0x14d/0x170
 path_setxattr+0x19b/0x1d0
 __x64_sys_setxattr+0xc0/0x160
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 11955:
 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
 kvfree+0x42/0x50
 simple_xattr_set+0x3f8/0x610
 shmem_xattr_handler_set+0x42/0xc0
 __vfs_setxattr+0x115/0x180
 __vfs_setxattr_noperm+0x125/0x600
 __vfs_setxattr_locked+0x1d3/0x260
 vfs_setxattr+0x13f/0x330
 setxattr+0x14d/0x170
 path_setxattr+0x19b/0x1d0
 __x64_sys_setxattr+0xc0/0x160
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

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
 vfs_fstatat+0x97/0xb0
 __do_sys_newlstat+0x8e/0x110
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff888015dae000
 which belongs to the cache kmemleak_object of size 368
The buggy address is located 48 bytes inside of
 368-byte region [ffff888015dae000, ffff888015dae170)

The buggy address belongs to the physical page:
page:00000000b261d314 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffffea00010aef80 pfn:0x15dae
head:00000000b261d314 order:1 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 ffff888007c4f780 dead000000120012 0000000000000000
raw: ffffea00010aef80 dead000000000004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888015dadf00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888015dadf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff888015dae000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                     ^
 ffff888015dae080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888015dae100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
==================================================================