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BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70
Read of size 8 at addr ffff88800db32888 by task syz-executor/19451

CPU: 1 PID: 19451 Comm: syz-executor Not tainted 6.0.0-rc3-next-20220829 #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: 0033:0x7f511b76a5c3
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:00007fff7190a3b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fff7190a9f8 RCX: 00007f511b76a5c3
RDX: 0000000000000004 RSI: 00007f511b820ed9 RDI: 0000000000000003
RBP: 0000000000000002 R08: 00000000000006a4 R09: 00007fff71978080
R10: 00007fff71978090 R11: 0000000000000246 R12: 00000000fffffff6
R13: 00007fff7190aef1 R14: 0000000000000000 R15: 000000000019f3ec
 </TASK>

Allocated by task 19421:
 kasan_save_stack+0x1e/0x40
 __kasan_slab_alloc+0x66/0x80
 kmem_cache_alloc+0x1b1/0x3e0
 __create_object.isra.0+0x3d/0xc10
 kmem_cache_alloc_lru+0x2ce/0x720
 shmem_alloc_inode+0x23/0x50
 alloc_inode+0x63/0x240
 new_inode+0x21/0x1e0
 shmem_get_inode+0x191/0xe30
 shmem_symlink+0xe2/0x7f0
 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+0xf7/0x610
 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
 kmem_cache_free+0xbd/0x610
 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+0xbd/0x610
 kfree_skbmem+0xef/0x1b0
 consume_skb+0xcf/0x160
 netlink_broadcast+0x355/0xd90
 nlmsg_notify+0x8f/0x280
 rtmsg_ifinfo+0xf0/0x120
 register_netdevice+0x1244/0x1510
 register_netdev+0x2d/0x50
 sit_init_net+0x354/0xa00
 ops_init+0xb2/0x480
 setup_net+0x40c/0x9d0
 copy_net_ns+0x318/0x760
 create_new_namespaces+0x3f6/0xb30
 copy_namespaces+0x395/0x480
 copy_process+0x2c99/0x6dd0
 kernel_clone+0xe7/0xa60
 __do_sys_clone3+0x1d5/0x2e0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88800db32870
 which belongs to the cache kmemleak_object of size 368
The buggy address is located 24 bytes inside of
 368-byte region [ffff88800db32870, ffff88800db329e0)

The buggy address belongs to the physical page:
page:000000008d583671 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88800db335f0 pfn:0xdb32
head:000000008d583671 order:1 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 ffffea00005d4208 ffffea0000ecd308 ffff888007c4f780
raw: ffff88800db335f0 000000000012000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88800db32780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88800db32800: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb
>ffff88800db32880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88800db32900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88800db32980: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
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