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BUG: KASAN: slab-use-after-free in usa49_glocont_callback+0x1a5/0x2a0
Read of size 4 at addr ffff888111a8afb0 by task pool_workqueue_/3

CPU: 0 UID: 0 PID: 3 Comm: pool_workqueue_ Tainted: G             L      syzkaller #0 PREEMPT(lazy) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <IRQ>
 dump_stack_lvl+0xe8/0x150
 print_address_description+0x55/0x1e0
 print_report+0x58/0x70
 kasan_report+0x117/0x150
 usa49_glocont_callback+0x1a5/0x2a0
 __usb_hcd_giveback_urb+0x374/0x530
 dummy_timer+0xa91/0x4cf0
 __hrtimer_run_queues+0x3bc/0xa10
 hrtimer_run_softirq+0x17a/0x240
 handle_softirqs+0x225/0x840
 __irq_exit_rcu+0xca/0x220
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lockdep_unregister_key+0x2d5/0x350
Code: 81 0c 09 00 89 c6 48 c7 c7 d0 89 74 96 e8 23 71 2f 0a 90 e9 65 fe ff ff e8 88 b0 2c 0a 41 f7 c7 00 02 00 00 74 b3 fb 40 84 ed <75> b2 eb c3 90 0f 0b 90 e9 26 ff ff ff 90 0f 0b 90 e9 2e ff ff ff
RSP: 0018:ffffc90000087c90 EFLAGS: 00000246
RAX: 0000000000000046 RBX: ffff88817108f530 RCX: 0000000000000046
RDX: ffffffff94300538 RSI: ffffffff8e241dcf RDI: ffffffff8c4bc680
RBP: ffff888102ab1e00 R08: c800000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb59c60 R12: 0000000000000000
R13: ffff88817108f531 R14: 0000000000001000 R15: 0000000000000a03
 pwq_release_workfn+0x746/0x880
 kthread_worker_fn+0x4eb/0xb20
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 6901:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x32d/0x660
 keyspan_port_probe+0xab/0xd20
 usb_serial_device_probe+0xde/0x2e0
 really_probe+0x254/0xae0
 __driver_probe_device+0x1e8/0x360
 driver_probe_device+0x4f/0x240
 __device_attach_driver+0x270/0x410
 bus_for_each_drv+0x258/0x2f0
 __device_attach+0x2c4/0x450
 device_initial_probe+0xa1/0xd0
 bus_probe_device+0x12a/0x220
 device_add+0x7d7/0xb80
 usb_serial_probe+0x26e0/0x2e50
 usb_probe_interface+0x653/0xc60
 really_probe+0x254/0xae0
 __driver_probe_device+0x1e8/0x360
 driver_probe_device+0x4f/0x240
 __device_attach_driver+0x270/0x410
 bus_for_each_drv+0x258/0x2f0
 __device_attach+0x2c4/0x450
 device_initial_probe+0xa1/0xd0
 bus_probe_device+0x12a/0x220
 device_add+0x7d7/0xb80
 usb_set_configuration+0x1ad8/0x2180
 usb_generic_driver_probe+0x8d/0x150
 usb_probe_device+0x1c3/0x3b0
 really_probe+0x254/0xae0
 __driver_probe_device+0x1e8/0x360
 driver_probe_device+0x4f/0x240
 __device_attach_driver+0x270/0x410
 bus_for_each_drv+0x258/0x2f0
 __device_attach+0x2c4/0x450
 device_initial_probe+0xa1/0xd0
 bus_probe_device+0x12a/0x220
 device_add+0x7d7/0xb80
 usb_new_device+0x99d/0x1620
 hub_event+0x28e8/0x4d30
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30

Freed by task 33:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x40/0x50
 __kasan_slab_free+0x5c/0x80
 kfree+0x1c5/0x640
 usb_serial_device_remove+0x126/0x1f0
 device_release_driver_internal+0x48b/0x880
 bus_remove_device+0x444/0x560
 device_del+0x524/0x8f0
 usb_serial_disconnect+0x29b/0x4d0
 usb_unbind_interface+0x295/0x9f0
 device_release_driver_internal+0x4f5/0x880
 bus_remove_device+0x444/0x560
 device_del+0x524/0x8f0
 usb_disable_device+0x3d4/0x8d0
 usb_disconnect+0x346/0x9a0
 hub_event+0x1bbb/0x4d30
 process_scheduled_works+0xa8e/0x14e0
 worker_thread+0xa47/0xfb0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30

The buggy address belongs to the object at ffff888111a8af00
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 176 bytes inside of
 freed 192-byte region [ffff888111a8af00, ffff888111a8afc0)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111a8a
flags: 0x17ff00000000000(node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 017ff00000000000 ffff8881000413c0 dead000000000100 dead000000000122
raw: 0000000000000000 0000000800100010 00000000f5000000 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 19602, tgid 19602 (syz-executor), ts 627432107454
 post_alloc_hook+0x1f9/0x250
 get_page_from_freelist+0x2205/0x2280
 __alloc_frozen_pages_noprof+0x217/0x5a0
 allocate_slab+0x7c/0x5e0
 refill_objects+0x2d5/0x350
 __pcs_replace_empty_main+0x2bf/0x6b0
 __kmalloc_cache_noprof+0x3a7/0x660
 sw_sync_debugfs_open+0x178/0x3e0
 open_proxy_open+0x2ff/0x440
 do_dentry_open+0x816/0x1380
 vfs_open+0x3b/0x340
 path_openat+0x2e44/0x3830
 do_file_open+0x23e/0x4a0
 do_sys_openat2+0x115/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x174/0x580
page last free pid 19602 tgid 19602 ts 627425655378 stack trace:
 __free_frozen_pages+0xc8f/0xd80
 __slab_free+0x274/0x2c0
 qlist_free_all+0x99/0x100
 kasan_quarantine_reduce+0x148/0x160
 __kasan_slab_alloc+0x22/0x80
 kmem_cache_alloc_noprof+0x2a0/0x5f0
 do_getname+0x2e/0x250
 do_sys_openat2+0xcc/0x200
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0x174/0x580
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff888111a8ae80: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888111a8af00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888111a8af80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
                                     ^
 ffff888111a8b000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff888111a8b080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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