syz-executor.6: attempt to access beyond end of device
loop6: rw=2049, sector=40, nr_sectors = 4 limit=40
Buffer I/O error on dev loop6, logical block 10, lost async page write
==================================================================
BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70
Read of size 8 at addr ffff88800e8acd98 by task syz-executor/11964

CPU: 1 PID: 11964 Comm: syz-executor Not tainted 5.19.0-rc8-next-20220726 #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.cold+0x5e/0x5e5
 kasan_report+0xb1/0x1c0
 __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: 0033:0x7fb42d5bc5c3
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:00007fff7c355da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fff7c3563e8 RCX: 00007fb42d5bc5c3
RDX: 0000000000000004 RSI: 00007fb42d672ed9 RDI: 0000000000000003
RBP: 0000000000000002 R08: 0000000000000ae4 R09: 00007fff7c392080
R10: 00007fff7c392090 R11: 0000000000000246 R12: 00000000fffffff6
R13: 00007fff7c357ef1 R14: 0000000000000000 R15: 00000000002a8bd9
 </TASK>

Allocated by task 11966:
 kasan_save_stack+0x1e/0x40
 __kasan_slab_alloc+0x66/0x80
 kmem_cache_alloc+0x1b1/0x4a0
 __create_object.isra.0+0x3d/0xc10
 __kmalloc_track_caller+0x275/0x450
 kmemdup+0x23/0x50
 shmem_symlink+0x185/0x7f0
 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 13:
 kasan_save_stack+0x1e/0x40
 kasan_set_track+0x21/0x30
 kasan_set_free_info+0x20/0x40
 __kasan_slab_free+0x108/0x190
 kmem_cache_free+0xfb/0x610
 rcu_core+0x7e2/0x2080
 __do_softirq+0x1c8/0x8d0

Last potentially related work creation:
 kasan_save_stack+0x1e/0x40
 __kasan_record_aux_stack+0x97/0xb0
 call_rcu+0x6a/0xa30
 kfree+0xbb/0x5e0
 shmem_free_in_core_inode+0x8b/0xa0
 i_callback+0x42/0x70
 rcu_core+0x7e2/0x2080
 __do_softirq+0x1c8/0x8d0

Second to last potentially related work creation:
 kasan_save_stack+0x1e/0x40
 __kasan_record_aux_stack+0x97/0xb0
 call_rcu+0x6a/0xa30
 kmem_cache_free_bulk.part.0+0x305/0x840
 kfree_rcu_work+0x3fa/0xbd0
 process_one_work+0xa0f/0x1690
 worker_thread+0x637/0x1260
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30

The buggy address belongs to the object at ffff88800e8acd80
 which belongs to the cache kmemleak_object of size 368
The buggy address is located 24 bytes inside of
 368-byte region [ffff88800e8acd80, ffff88800e8acef0)

The buggy address belongs to the physical page:
page:0000000074c2cba9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe8ac
head:0000000074c2cba9 order:1 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 ffffea00005c4780 dead000000000002 ffff888007c4f780
raw: 0000000000000000 0000000000120012 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88800e8acc80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88800e8acd00: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
>ffff88800e8acd80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff88800e8ace00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88800e8ace80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
==================================================================