usb 1-1: Direct firmware load for ueagle-atm/adi930.fw failed with error -2
usb 1-1: Falling back to sysfs fallback for: ueagle-atm/adi930.fw
==================================================================
BUG: KASAN: use-after-free in kernfs_root fs/kernfs/kernfs-internal.h:66 [inline]
BUG: KASAN: use-after-free in kernfs_next_descendant_post+0x2cd/0x2f0 fs/kernfs/dir.c:1288
Read of size 8 at addr ffff88802b9375a0 by task kworker/1:5/17555

CPU: 1 PID: 17555 Comm: kworker/1:5 Not tainted 5.19.0-rc3-syzkaller-00279-g8c23f235a6a8 #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+0xeb/0x495 mm/kasan/report.c:313
 print_report mm/kasan/report.c:429 [inline]
 kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491
 kernfs_root fs/kernfs/kernfs-internal.h:66 [inline]
 kernfs_next_descendant_post+0x2cd/0x2f0 fs/kernfs/dir.c:1288
 kernfs_activate+0x97/0x240 fs/kernfs/dir.c:1328
 kernfs_add_one+0x3c6/0x550 fs/kernfs/dir.c:775
 kernfs_create_dir_ns+0x18b/0x220 fs/kernfs/dir.c:1020
 sysfs_create_dir_ns+0x127/0x290 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:63 [inline]
 kobject_add_internal+0x2ce/0x900 lib/kobject.c:223
 kobject_add_varg lib/kobject.c:358 [inline]
 kobject_add+0x150/0x1c0 lib/kobject.c:410
 device_add+0x36d/0x1ea0 drivers/base/core.c:3352
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:82 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:158 [inline]
 firmware_fallback_sysfs+0x2da/0xbb0 drivers/base/firmware_loader/fallback.c:234
 _request_firmware+0xbd2/0x1190 drivers/base/firmware_loader/main.c:856
 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1105
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
 </TASK>

Allocated by task 17555:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:45 [inline]
 set_alloc_info mm/kasan/common.c:436 [inline]
 __kasan_slab_alloc+0x90/0xc0 mm/kasan/common.c:469
 kasan_slab_alloc include/linux/kasan.h:224 [inline]
 slab_post_alloc_hook mm/slab.h:750 [inline]
 slab_alloc_node mm/slub.c:3243 [inline]
 slab_alloc mm/slub.c:3251 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3258 [inline]
 kmem_cache_alloc+0x204/0x3b0 mm/slub.c:3268
 kmem_cache_zalloc include/linux/slab.h:723 [inline]
 __kernfs_new_node+0xd4/0x8b0 fs/kernfs/dir.c:593
 kernfs_new_node fs/kernfs/dir.c:655 [inline]
 kernfs_create_dir_ns+0x9c/0x220 fs/kernfs/dir.c:1010
 sysfs_create_dir_ns+0x127/0x290 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:63 [inline]
 kobject_add_internal+0x2ce/0x900 lib/kobject.c:223
 kobject_add_varg lib/kobject.c:358 [inline]
 kobject_add+0x150/0x1c0 lib/kobject.c:410
 device_add+0x36d/0x1ea0 drivers/base/core.c:3352
 fw_load_sysfs_fallback drivers/base/firmware_loader/fallback.c:82 [inline]
 fw_load_from_user_helper drivers/base/firmware_loader/fallback.c:158 [inline]
 firmware_fallback_sysfs+0x2da/0xbb0 drivers/base/firmware_loader/fallback.c:234
 _request_firmware+0xbd2/0x1190 drivers/base/firmware_loader/main.c:856
 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1105
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 worker_thread+0x665/0x1080 kernel/workqueue.c:2436
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302

Freed by task 9309:
 kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
 kasan_set_track+0x21/0x30 mm/kasan/common.c:45
 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
 ____kasan_slab_free mm/kasan/common.c:366 [inline]
 ____kasan_slab_free+0x166/0x1a0 mm/kasan/common.c:328
 kasan_slab_free include/linux/kasan.h:200 [inline]
 slab_free_hook mm/slub.c:1754 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1780
 slab_free mm/slub.c:3536 [inline]
 kmem_cache_free+0xdd/0x5a0 mm/slub.c:3553
 kernfs_put.part.0+0x2c4/0x540 fs/kernfs/dir.c:547
 kernfs_put+0x42/0x50 fs/kernfs/dir.c:521
 __kernfs_remove+0x7a3/0xb20 fs/kernfs/dir.c:1404
 kernfs_remove+0x77/0xa0 fs/kernfs/dir.c:1424
 sysfs_remove_dir+0xc1/0x100 fs/sysfs/dir.c:101
 __kobject_del+0xe2/0x200 lib/kobject.c:588
 kobject_del lib/kobject.c:611 [inline]
 kobject_del+0x3c/0x60 lib/kobject.c:603
 device_del+0x81c/0xc80 drivers/base/core.c:3615
 usb_disconnect.cold+0x4ba/0x6ec drivers/usb/core/hub.c:2254
 hub_port_connect drivers/usb/core/hub.c:5207 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
 port_event drivers/usb/core/hub.c:5663 [inline]
 hub_event+0x1e83/0x4690 drivers/usb/core/hub.c:5745
 process_one_work+0x996/0x1610 kernel/workqueue.c:2289
 process_scheduled_works kernel/workqueue.c:2352 [inline]
 worker_thread+0x854/0x1080 kernel/workqueue.c:2438
 kthread+0x2e9/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302

The buggy address belongs to the object at ffff88802b937570
 which belongs to the cache kernfs_node_cache of size 168
The buggy address is located 48 bytes inside of
 168-byte region [ffff88802b937570, ffff88802b937618)

The buggy address belongs to the physical page:
page:ffffea0000ae4dc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2b937
flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000000200 ffffea0000bfc300 dead000000000004 ffff888140007b40
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 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 13055, tgid 13055 (syz-executor.0), ts 757138635900, free_ts 640397814327
 prep_new_page mm/page_alloc.c:2456 [inline]
 get_page_from_freelist+0x1290/0x3b70 mm/page_alloc.c:4198
 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5426
 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2272
 alloc_slab_page mm/slub.c:1824 [inline]
 allocate_slab+0x26c/0x3c0 mm/slub.c:1969
 new_slab mm/slub.c:2029 [inline]
 ___slab_alloc+0x9c4/0xe20 mm/slub.c:3031
 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3118
 slab_alloc_node mm/slub.c:3209 [inline]
 slab_alloc mm/slub.c:3251 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3258 [inline]
 kmem_cache_alloc+0x360/0x3b0 mm/slub.c:3268
 kmem_cache_zalloc include/linux/slab.h:723 [inline]
 __kernfs_new_node+0xd4/0x8b0 fs/kernfs/dir.c:593
 kernfs_new_node+0x93/0x120 fs/kernfs/dir.c:655
 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:987
 sysfs_add_file_mode_ns+0x20f/0x3f0 fs/sysfs/file.c:294
 sysfs_merge_group+0x196/0x310 fs/sysfs/group.c:342
 dpm_sysfs_add+0x241/0x290 drivers/base/power/sysfs.c:707
 device_add+0xa87/0x1ea0 drivers/base/core.c:3374
 netdev_register_kobject+0x181/0x400 net/core/net-sysfs.c:2015
 register_netdevice+0xd9d/0x15e0 net/core/dev.c:10047
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1371 [inline]
 free_pcp_prepare+0x549/0xd20 mm/page_alloc.c:1421
 free_unref_page_prepare mm/page_alloc.c:3343 [inline]
 free_unref_page+0x19/0x6a0 mm/page_alloc.c:3438
 __unfreeze_partials+0x17c/0x1a0 mm/slub.c:2548
 qlink_free mm/kasan/quarantine.c:168 [inline]
 qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
 kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294
 __kasan_slab_alloc+0xa2/0xc0 mm/kasan/common.c:446
 kasan_slab_alloc include/linux/kasan.h:224 [inline]
 slab_post_alloc_hook mm/slab.h:750 [inline]
 slab_alloc_node mm/slub.c:3243 [inline]
 slab_alloc mm/slub.c:3251 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3258 [inline]
 kmem_cache_alloc+0x204/0x3b0 mm/slub.c:3268
 getname_flags.part.0+0x50/0x4f0 fs/namei.c:139
 getname_flags+0x9a/0xe0 include/linux/audit.h:323
 vfs_fstatat+0x73/0xb0 fs/stat.c:254
 __do_sys_newfstatat+0x91/0x110 fs/stat.c:425
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

Memory state around the buggy address:
 ffff88802b937480: fc fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802b937500: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb
>ffff88802b937580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                               ^
 ffff88802b937600: fb fb fb fc fc fc fc fc fc fc fc 00 00 00 00 00
 ffff88802b937680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================