team0: left promiscuous mode
pim6reg9 (unregistering): left allmulticast mode
pimreg3 (unregistering): left allmulticast mode
==================================================================
BUG: KASAN: slab-out-of-bounds in u32_clear_hnode+0x5c8/0x8e0
Read of size 4 at addr ffff88810a5a25ac by task kworker/u8:0/12

CPU: 1 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: netns cleanup_net
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250
 print_report+0xca/0x240
 kasan_report+0x118/0x150
 kasan_check_range+0x2b0/0x2c0
 u32_clear_hnode+0x5c8/0x8e0
 u32_destroy_hnode+0xb3/0x5c0
 u32_destroy+0x137/0x470
 tcf_proto_destroy+0x83/0x3d0
 tcf_chain_flush+0x359/0x4b0
 __tcf_block_put+0x3ae/0x4b0
 tcf_block_put+0x6c/0xa0
 multiq_destroy+0x50/0x1a0
 __qdisc_destroy+0x153/0x420
 dev_shutdown+0x34c/0x440
 unregister_netdevice_many_notify+0xe0f/0x1ff0
 default_device_exit_batch+0x819/0x890
 ops_undo_list+0x525/0x990
 cleanup_net+0x4c5/0x800
 process_scheduled_works+0xae1/0x17b0
 worker_thread+0x8a0/0xda0
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>

Allocated by task 1:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_cache_noprof+0x230/0x3d0
 device_create+0x12f/0x2f0
 mon_bin_add+0xb6/0x130
 mon_bus_init+0x162/0x2a0
 mon_notify+0x112/0x3f0
 notifier_call_chain+0x1b6/0x3e0
 blocking_notifier_call_chain+0x6a/0x90
 usb_register_bus+0xcf/0x150
 usb_add_hcd+0x451/0x1050
 dummy_hcd_probe+0x134/0x270
 platform_probe+0xf9/0x190
 really_probe+0x26d/0x9e0
 __driver_probe_device+0x18c/0x2f0
 driver_probe_device+0x4f/0x430
 __device_attach_driver+0x2ce/0x530
 bus_for_each_drv+0x251/0x2e0
 __device_attach+0x2b8/0x400
 bus_probe_device+0x185/0x260
 device_add+0x7b6/0xb50
 platform_device_add+0x4b4/0x820
 dummy_hcd_init+0x57f/0xbd0
 do_one_initcall+0x236/0x820
 do_initcall_level+0x104/0x190
 do_initcalls+0x59/0xa0
 kernel_init_freeable+0x334/0x4b0
 kernel_init+0x1d/0x1d0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30

The buggy address belongs to the object at ffff88810a5a2000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 316 bytes to the right of
 allocated 1136-byte region [ffff88810a5a2000, ffff88810a5a2470)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10a5a0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x57ff00000000040(head|node=1|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 057ff00000000040 ffff88801a442000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 057ff00000000040 ffff88801a442000 dead000000000122 0000000000000000
head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000
head: 057ff00000000003 ffffea0004296801 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 12136646782, free_ts 0
 post_alloc_hook+0x240/0x2a0
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x8a/0x370
 ___slab_alloc+0xbeb/0x1410
 __kmalloc_cache_noprof+0x296/0x3d0
 usb_create_ep_devs+0x59/0x230
 usb_new_device+0xb4c/0x16f0
 register_root_hub+0x275/0x590
 usb_add_hcd+0xba1/0x1050
 dummy_hcd_probe+0x134/0x270
 platform_probe+0xf9/0x190
 really_probe+0x26d/0x9e0
 __driver_probe_device+0x18c/0x2f0
 driver_probe_device+0x4f/0x430
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88810a5a2480: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88810a5a2500: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88810a5a2580: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                  ^
 ffff88810a5a2600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88810a5a2680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
