usb 2-1: Falling back to sysfs fallback for: ueagle-atm/eagleII.fw
==================================================================
BUG: KASAN: use-after-free in kernfs_type include/linux/kernfs.h:290 [inline]
BUG: KASAN: use-after-free in kernfs_leftmost_descendant fs/kernfs/dir.c:1230 [inline]
BUG: KASAN: use-after-free in kernfs_next_descendant_post+0x1da/0x290 fs/kernfs/dir.c:1261
Read of size 2 at addr ffff8880782cc180 by task kworker/0:8/3701

CPU: 0 PID: 3701 Comm: kworker/0:8 Not tainted 5.16.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events request_firmware_work_func
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:247
 __kasan_report mm/kasan/report.c:433 [inline]
 kasan_report.cold+0x83/0xdf mm/kasan/report.c:450
 kernfs_type include/linux/kernfs.h:290 [inline]
 kernfs_leftmost_descendant fs/kernfs/dir.c:1230 [inline]
 kernfs_next_descendant_post+0x1da/0x290 fs/kernfs/dir.c:1261
 kernfs_activate+0x3a/0x1d0 fs/kernfs/dir.c:1296
 kernfs_add_one+0x368/0x4c0 fs/kernfs/dir.c:766
 kernfs_create_dir_ns+0x18b/0x220 fs/kernfs/dir.c:994
 sysfs_create_dir_ns+0x127/0x290 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:89 [inline]
 kobject_add_internal+0x2d2/0xa60 lib/kobject.c:255
 kobject_add_varg lib/kobject.c:390 [inline]
 kobject_add+0x150/0x1c0 lib/kobject.c:442
 class_dir_create_and_add drivers/base/core.c:2948 [inline]
 get_device_parent+0x3d7/0x590 drivers/base/core.c:3003
 device_add+0x2a8/0x1ee0 drivers/base/core.c:3315
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:507 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:583 [inline]
 firmware_fallback_sysfs+0x402/0xe70 drivers/base/firmware_loader/fallback.c:659
 _request_firmware+0xb97/0xfe0 drivers/base/firmware_loader/main.c:774
 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1020
 process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298
 worker_thread+0x65d/0x1130 kernel/workqueue.c:2445
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Allocated by task 3701:
 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 __kasan_slab_alloc+0x90/0xc0 mm/kasan/common.c:467
 kasan_slab_alloc include/linux/kasan.h:259 [inline]
 slab_post_alloc_hook mm/slab.h:519 [inline]
 slab_alloc_node mm/slub.c:3234 [inline]
 slab_alloc mm/slub.c:3242 [inline]
 kmem_cache_alloc+0x202/0x3a0 mm/slub.c:3247
 kmem_cache_zalloc include/linux/slab.h:714 [inline]
 __kernfs_new_node+0xd4/0x8b0 fs/kernfs/dir.c:585
 kernfs_new_node fs/kernfs/dir.c:647 [inline]
 kernfs_create_dir_ns+0x9c/0x220 fs/kernfs/dir.c:984
 sysfs_create_dir_ns+0x127/0x290 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:89 [inline]
 kobject_add_internal+0x2d2/0xa60 lib/kobject.c:255
 kobject_add_varg lib/kobject.c:390 [inline]
 kobject_add+0x150/0x1c0 lib/kobject.c:442
 class_dir_create_and_add drivers/base/core.c:2948 [inline]
 get_device_parent+0x3d7/0x590 drivers/base/core.c:3003
 device_add+0x2a8/0x1ee0 drivers/base/core.c:3315
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:507 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:583 [inline]
 firmware_fallback_sysfs+0x402/0xe70 drivers/base/firmware_loader/fallback.c:659
 _request_firmware+0xb97/0xfe0 drivers/base/firmware_loader/main.c:774
 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1020
 process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298
 worker_thread+0x65d/0x1130 kernel/workqueue.c:2445
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

Freed by task 3692:
 kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
 kasan_set_track+0x21/0x30 mm/kasan/common.c:46
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
 ____kasan_slab_free mm/kasan/common.c:366 [inline]
 ____kasan_slab_free mm/kasan/common.c:328 [inline]
 __kasan_slab_free+0xff/0x130 mm/kasan/common.c:374
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:1723 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1749
 slab_free mm/slub.c:3513 [inline]
 kmem_cache_free+0xbd/0x5d0 mm/slub.c:3530
 kernfs_put.part.0+0x2c4/0x540 fs/kernfs/dir.c:539
 kernfs_put+0x42/0x50 fs/kernfs/dir.c:513
 __kernfs_remove+0x725/0xab0 fs/kernfs/dir.c:1372
 kernfs_remove+0x1d/0x30 fs/kernfs/dir.c:1385
 sysfs_remove_dir+0xc1/0x100 fs/sysfs/dir.c:101
 __kobject_del+0xe2/0x200 lib/kobject.c:620
 kobject_del lib/kobject.c:643 [inline]
 kobject_del+0x3c/0x60 lib/kobject.c:635
 device_del+0x834/0xd60 drivers/base/core.c:3593
 usb_disconnect.cold+0x4ba/0x78e drivers/usb/core/hub.c:2251
 hub_port_connect drivers/usb/core/hub.c:5197 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
 port_event drivers/usb/core/hub.c:5643 [inline]
 hub_event+0x1c9c/0x4460 drivers/usb/core/hub.c:5725
 process_one_work+0x9b2/0x1660 kernel/workqueue.c:2298
 process_scheduled_works kernel/workqueue.c:2361 [inline]
 worker_thread+0x83c/0x1130 kernel/workqueue.c:2447
 kthread+0x405/0x4f0 kernel/kthread.c:327
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295

The buggy address belongs to the object at ffff8880782cc0e8
 which belongs to the cache kernfs_node_cache of size 168
The buggy address is located 152 bytes inside of
 168-byte region [ffff8880782cc0e8, ffff8880782cc190)
The buggy address belongs to the page:
page:ffffea0001e0b300 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x782cc
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 dead000000000100 dead000000000122 ffff888010dd1a00
raw: 0000000000000000 0000000080110011 00000001ffffffff 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 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 3641, ts 295277806773, free_ts 295199409848
 prep_new_page mm/page_alloc.c:2418 [inline]
 get_page_from_freelist+0xa72/0x2f50 mm/page_alloc.c:4149
 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5369
 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2190
 alloc_slab_page mm/slub.c:1793 [inline]
 allocate_slab mm/slub.c:1930 [inline]
 new_slab+0x32d/0x4a0 mm/slub.c:1993
 ___slab_alloc+0x918/0xfe0 mm/slub.c:3022
 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3109
 slab_alloc_node mm/slub.c:3200 [inline]
 slab_alloc mm/slub.c:3242 [inline]
 kmem_cache_alloc+0x35c/0x3a0 mm/slub.c:3247
 kmem_cache_zalloc include/linux/slab.h:714 [inline]
 __kernfs_new_node+0xd4/0x8b0 fs/kernfs/dir.c:585
 kernfs_new_node+0x93/0x120 fs/kernfs/dir.c:647
 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:985
 sysfs_add_file_mode_ns+0x20f/0x3f0 fs/sysfs/file.c:294
 create_files fs/sysfs/group.c:64 [inline]
 internal_create_group+0x322/0xb10 fs/sysfs/group.c:148
 internal_create_groups.part.0+0x90/0x140 fs/sysfs/group.c:188
 internal_create_groups fs/sysfs/group.c:184 [inline]
 sysfs_create_groups+0x25/0x50 fs/sysfs/group.c:214
 create_dir lib/kobject.c:100 [inline]
 kobject_add_internal+0x583/0xa60 lib/kobject.c:255
 kobject_add_varg lib/kobject.c:390 [inline]
 kobject_init_and_add+0x101/0x160 lib/kobject.c:473
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1338 [inline]
 free_pcp_prepare+0x374/0x870 mm/page_alloc.c:1389
 free_unref_page_prepare mm/page_alloc.c:3309 [inline]
 free_unref_page+0x19/0x690 mm/page_alloc.c:3388
 qlink_free mm/kasan/quarantine.c:146 [inline]
 qlist_free_all+0x5a/0xc0 mm/kasan/quarantine.c:165
 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:272
 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:444
 kasan_slab_alloc include/linux/kasan.h:259 [inline]
 slab_post_alloc_hook mm/slab.h:519 [inline]
 slab_alloc_node mm/slub.c:3234 [inline]
 slab_alloc mm/slub.c:3242 [inline]
 __kmalloc_track_caller+0x1e9/0x320 mm/slub.c:4925
 kvasprintf+0xb5/0x150 lib/kasprintf.c:25
 kvasprintf_const+0x60/0x190 lib/kasprintf.c:49
 kobject_set_name_vargs+0x56/0x150 lib/kobject.c:289
 kobject_add_varg lib/kobject.c:384 [inline]
 kobject_init_and_add+0xc9/0x160 lib/kobject.c:473
 netdev_queue_add_kobject net/core/net-sysfs.c:1665 [inline]
 netdev_queue_update_kobjects+0x1a2/0x460 net/core/net-sysfs.c:1710
 register_queue_kobjects net/core/net-sysfs.c:1771 [inline]
 netdev_register_kobject+0x35a/0x430 net/core/net-sysfs.c:2014
 register_netdevice+0xd31/0x1500 net/core/dev.c:10336
 veth_newlink+0x593/0xb00 drivers/net/veth.c:1730
 __rtnl_newlink+0x106d/0x1750 net/core/rtnetlink.c:3458
 rtnl_newlink+0x64/0xa0 net/core/rtnetlink.c:3506

Memory state around the buggy address:
 ffff8880782cc080: 00 00 00 00 00 fc fc fc fc fc fc fc fc fa fb fb
 ffff8880782cc100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880782cc180: fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00
                   ^
 ffff8880782cc200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc
 ffff8880782cc280: fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 00
==================================================================