usb 8-1: Direct firmware load for ueagle-atm/eagleII.fw failed with error -2
usb 8-1: Falling back to sysfs fallback for: ueagle-atm/eagleII.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:1322
Read of size 8 at addr ffff888049642118 by task kworker/2:3/16322

CPU: 2 PID: 16322 Comm: kworker/2:3 Not tainted 6.2.0-rc1-syzkaller-00084-gc8451c141e07 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: events request_firmware_work_func
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:306 [inline]
 print_report+0x15e/0x45d mm/kasan/report.c:417
 kasan_report+0xbf/0x1f0 mm/kasan/report.c:517
 kernfs_root fs/kernfs/kernfs-internal.h:66 [inline]
 kernfs_next_descendant_post+0x2cd/0x2f0 fs/kernfs/dir.c:1322
 kernfs_activate fs/kernfs/dir.c:1377 [inline]
 kernfs_add_one+0x391/0x4f0 fs/kernfs/dir.c:792
 kernfs_create_dir_ns+0x18f/0x230 fs/kernfs/dir.c:1042
 sysfs_create_dir_ns+0x12b/0x290 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:63 [inline]
 kobject_add_internal+0x2c9/0x8f0 lib/kobject.c:223
 kobject_add_varg lib/kobject.c:358 [inline]
 kobject_add+0x154/0x1c0 lib/kobject.c:410
 class_dir_create_and_add drivers/base/core.c:3016 [inline]
 get_device_parent+0x3d7/0x590 drivers/base/core.c:3071
 device_add+0x2ae/0x1e90 drivers/base/core.c:3400
 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+0x2d9/0xba0 drivers/base/firmware_loader/fallback.c:234
 _request_firmware+0xbcf/0x1190 drivers/base/firmware_loader/main.c:856
 request_firmware_work_func+0xe1/0x240 drivers/base/firmware_loader/main.c:1105
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x669/0x1090 kernel/workqueue.c:2436
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>

Allocated by task 16322:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 __kasan_slab_alloc+0x82/0x90 mm/kasan/common.c:325
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slab.h:761 [inline]
 slab_alloc_node mm/slub.c:3452 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x1e4/0x430 mm/slub.c:3476
 kmem_cache_zalloc include/linux/slab.h:710 [inline]
 __kernfs_new_node+0xd4/0x8b0 fs/kernfs/dir.c:614
 kernfs_new_node fs/kernfs/dir.c:676 [inline]
 kernfs_create_dir_ns+0xa0/0x230 fs/kernfs/dir.c:1032
 sysfs_create_dir_ns+0x12b/0x290 fs/sysfs/dir.c:59
 create_dir lib/kobject.c:63 [inline]
 kobject_add_internal+0x2c9/0x8f0 lib/kobject.c:223
 kobject_add_varg lib/kobject.c:358 [inline]
 kobject_add+0x154/0x1c0 lib/kobject.c:410
 class_dir_create_and_add drivers/base/core.c:3016 [inline]
 get_device_parent+0x3d7/0x590 drivers/base/core.c:3071
 device_add+0x2ae/0x1e90 drivers/base/core.c:3400
 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+0x2d9/0xba0 drivers/base/firmware_loader/fallback.c:234
 _request_firmware+0xbcf/0x1190 drivers/base/firmware_loader/main.c:856
 request_firmware_work_func+0xe1/0x240 drivers/base/firmware_loader/main.c:1105
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 worker_thread+0x669/0x1090 kernel/workqueue.c:2436
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Freed by task 5232:
 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45
 kasan_set_track+0x25/0x30 mm/kasan/common.c:52
 kasan_save_free_info+0x2e/0x40 mm/kasan/generic.c:518
 ____kasan_slab_free mm/kasan/common.c:236 [inline]
 ____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1781 [inline]
 slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1807
 slab_free mm/slub.c:3787 [inline]
 kmem_cache_free+0xee/0x5c0 mm/slub.c:3809
 kernfs_put.part.0+0x228/0x470 fs/kernfs/dir.c:568
 kernfs_put+0x46/0x50 fs/kernfs/dir.c:542
 __kernfs_remove+0x463/0x600 fs/kernfs/dir.c:1476
 kernfs_remove+0x7b/0xa0 fs/kernfs/dir.c:1496
 sysfs_remove_dir+0xc5/0x100 fs/sysfs/dir.c:101
 __kobject_del+0xe2/0x1f0 lib/kobject.c:588
 kobject_del lib/kobject.c:611 [inline]
 kobject_del+0x40/0x60 lib/kobject.c:603
 device_del+0x820/0xc80 drivers/base/core.c:3677
 usb_disconnect.cold+0x49b/0x6ed drivers/usb/core/hub.c:2261
 hub_port_connect drivers/usb/core/hub.c:5244 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5549 [inline]
 port_event drivers/usb/core/hub.c:5709 [inline]
 hub_event+0x1fb5/0x4810 drivers/usb/core/hub.c:5791
 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
 process_scheduled_works kernel/workqueue.c:2352 [inline]
 worker_thread+0x858/0x1090 kernel/workqueue.c:2438
 kthread+0x2e8/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

The buggy address belongs to the object at ffff8880496420e8
 which belongs to the cache kernfs_node_cache of size 168
The buggy address is located 48 bytes inside of
 168-byte region [ffff8880496420e8, ffff888049642190)

The buggy address belongs to the physical page:
page:ffffea0001259080 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x49642
anon flags: 0x4fff00000000200(slab|node=1|zone=1|lastcpupid=0x7ff)
raw: 04fff00000000200 ffff8880400457c0 ffffea0001d4bf80 dead000000000005
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 13338, tgid 13338 (syz-executor.0), ts 978569140196, free_ts 978412389706
 prep_new_page mm/page_alloc.c:2531 [inline]
 get_page_from_freelist+0x119c/0x2ce0 mm/page_alloc.c:4283
 __alloc_pages+0x1cb/0x5b0 mm/page_alloc.c:5549
 alloc_pages+0x1aa/0x270 mm/mempolicy.c:2286
 alloc_slab_page mm/slub.c:1851 [inline]
 allocate_slab+0x25f/0x350 mm/slub.c:1998
 new_slab mm/slub.c:2051 [inline]
 ___slab_alloc+0xa91/0x1400 mm/slub.c:3193
 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3292
 __slab_alloc_node mm/slub.c:3345 [inline]
 slab_alloc_node mm/slub.c:3442 [inline]
 slab_alloc mm/slub.c:3460 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3467 [inline]
 kmem_cache_alloc+0x379/0x430 mm/slub.c:3476
 kmem_cache_zalloc include/linux/slab.h:710 [inline]
 __kernfs_new_node+0xd4/0x8b0 fs/kernfs/dir.c:614
 kernfs_new_node+0x97/0x120 fs/kernfs/dir.c:676
 __kernfs_create_file+0x55/0x350 fs/kernfs/file.c:1047
 sysfs_add_file_mode_ns+0x213/0x3f0 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+0x29/0x50 fs/sysfs/group.c:214
 create_dir lib/kobject.c:68 [inline]
 kobject_add_internal+0x318/0x8f0 lib/kobject.c:223
 kobject_add_varg lib/kobject.c:358 [inline]
 kobject_init_and_add+0x105/0x160 lib/kobject.c:441
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1446 [inline]
 free_pcp_prepare+0x65c/0xc00 mm/page_alloc.c:1496
 free_unref_page_prepare mm/page_alloc.c:3369 [inline]
 free_unref_page+0x1d/0x490 mm/page_alloc.c:3464
 tlb_batch_list_free mm/mmu_gather.c:113 [inline]
 tlb_finish_mmu+0x1a7/0x7e0 mm/mmu_gather.c:394
 exit_mmap+0x202/0x7b0 mm/mmap.c:3096
 __mmput+0x128/0x4c0 kernel/fork.c:1207
 mmput+0x60/0x70 kernel/fork.c:1229
 exit_mm kernel/exit.c:563 [inline]
 do_exit+0x9ac/0x2950 kernel/exit.c:854
 do_group_exit+0xd4/0x2a0 kernel/exit.c:1012
 __do_sys_exit_group kernel/exit.c:1023 [inline]
 __se_sys_exit_group kernel/exit.c:1021 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1021
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Memory state around the buggy address:
 ffff888049642000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888049642080: fb fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb
>ffff888049642100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                            ^
 ffff888049642180: fb fb fc fc fc fc fc fc fc fc fb fb fb fb fb fb
 ffff888049642200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc
==================================================================