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BUG: KASAN: use-after-free in __lock_acquire+0x42c9/0x5e70
Read of size 8 at addr ffff88801e810888 by task syz-executor/15670

CPU: 1 PID: 15670 Comm: syz-executor Not tainted 5.19.0-rc7-next-20220718 #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: 0033:0x7fe4647e95c3
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:00007ffc12c92e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffc12c93448 RCX: 00007fe4647e95c3
RDX: 0000000000000004 RSI: 00007fe46489fed9 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000d78 R09: 00007ffc12d08080
R10: 00007ffc12d08090 R11: 0000000000000246 R12: 00007fe4647ebb10
R13: 00007ffc12c94ee6 R14: 0000000000000000 R15: 0000000000349fed
 </TASK>

Allocated by task 15655:
 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
 kvasprintf+0xb5/0x150
 kvasprintf_const+0x60/0x1a0
 kobject_set_name_vargs+0x56/0x150
 kobject_init_and_add+0xc9/0x160
 netdev_queue_update_kobjects+0x182/0x440
 netdev_register_kobject+0x2ee/0x3b0
 register_netdevice+0xdca/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+0x2c65/0x6d60
 kernel_clone+0xe7/0xa60
 __do_sys_clone3+0x1d5/0x2e0
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Freed by task 15673:
 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
 kfree_const+0x51/0x60
 kobject_put+0x18a/0x270
 netdev_queue_update_kobjects+0x2ec/0x440
 netdev_unregister_kobject+0x165/0x280
 unregister_netdevice_many+0xc8b/0x15d0
 sit_exit_batch_net+0x4ff/0x720
 ops_exit_list+0x12b/0x180
 cleanup_net+0x484/0x9e0
 process_one_work+0xa0f/0x1690
 worker_thread+0x637/0x1260
 kthread+0x2ed/0x3a0
 ret_from_fork+0x22/0x30

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+0xc1/0x610
 security_file_free+0xaa/0xd0
 __fput+0x3c2/0x9d0
 task_work_run+0xe2/0x1a0
 exit_to_user_mode_prepare+0x199/0x1a0
 syscall_exit_to_user_mode+0x19/0x40
 do_syscall_64+0x48/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

The buggy address belongs to the object at ffff88801e810870
 which belongs to the cache kmemleak_object of size 368
The buggy address is located 24 bytes inside of
 368-byte region [ffff88801e810870, ffff88801e8109e0)

The buggy address belongs to the physical page:
page:000000005b7464e1 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1e810
head:000000005b7464e1 order:1 compound_mapcount:0 compound_pincount:0
flags: 0x100000000010200(slab|head|node=0|zone=1)
raw: 0100000000010200 ffffea00005c9d80 dead000000000003 ffff888007c4f780
raw: 0000000000000000 0000000000120012 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88801e810780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88801e810800: 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb
>ffff88801e810880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88801e810900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801e810980: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
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