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_type include/linux/kernfs.h:294 [inline] BUG: KASAN: use-after-free in kernfs_leftmost_descendant fs/kernfs/dir.c:1218 [inline] BUG: KASAN: use-after-free in kernfs_next_descendant_post+0x1da/0x290 fs/kernfs/dir.c:1249 Read of size 2 at addr ffff888064de27d8 by task kworker/0:1/7 CPU: 0 PID: 7 Comm: kworker/0:1 Not tainted 5.15.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events request_firmware_work_func Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x6c/0x309 mm/kasan/report.c:256 __kasan_report mm/kasan/report.c:442 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:459 kernfs_type include/linux/kernfs.h:294 [inline] kernfs_leftmost_descendant fs/kernfs/dir.c:1218 [inline] kernfs_next_descendant_post+0x1da/0x290 fs/kernfs/dir.c:1249 kernfs_activate+0x3a/0x1d0 fs/kernfs/dir.c:1284 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+0x128/0x290 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:2913 [inline] get_device_parent+0x3de/0x590 drivers/base/core.c:2968 device_add+0x2b1/0x21b0 drivers/base/core.c:3280 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+0x408/0xe70 drivers/base/firmware_loader/fallback.c:659 _request_firmware+0xbb5/0x1040 drivers/base/firmware_loader/main.c:833 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1079 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 7: kasan_save_stack+0x1b/0x40 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+0x83/0xb0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook mm/slab.h:519 [inline] slab_alloc_node mm/slub.c:3206 [inline] slab_alloc mm/slub.c:3214 [inline] kmem_cache_alloc+0x209/0x390 mm/slub.c:3219 kmem_cache_zalloc include/linux/slab.h:711 [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+0x128/0x290 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:2913 [inline] get_device_parent+0x3de/0x590 drivers/base/core.c:2968 device_add+0x2b1/0x21b0 drivers/base/core.c:3280 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+0x408/0xe70 drivers/base/firmware_loader/fallback.c:659 _request_firmware+0xbb5/0x1040 drivers/base/firmware_loader/main.c:833 request_firmware_work_func+0xdd/0x230 drivers/base/firmware_loader/main.c:1079 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Freed by task 20913: kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track+0x1c/0x30 mm/kasan/common.c:46 kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:360 ____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:230 [inline] slab_free_hook mm/slub.c:1700 [inline] slab_free_freelist_hook+0x81/0x190 mm/slub.c:1725 slab_free mm/slub.c:3483 [inline] kmem_cache_free+0x8a/0x5b0 mm/slub.c:3499 kernfs_put.part.0+0x2c4/0x540 fs/kernfs/dir.c:539 kernfs_put+0x42/0x50 fs/kernfs/dir.c:513 __kernfs_remove+0x727/0xab0 fs/kernfs/dir.c:1360 kernfs_remove+0x1d/0x30 fs/kernfs/dir.c:1373 sysfs_remove_dir+0xc1/0x100 fs/sysfs/dir.c:102 __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:3558 usb_disconnect.cold+0x4ba/0x78e drivers/usb/core/hub.c:2251 hub_port_connect drivers/usb/core/hub.c:5199 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x1c9c/0x4330 drivers/usb/core/hub.c:5716 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 process_scheduled_works kernel/workqueue.c:2360 [inline] worker_thread+0x85c/0x11f0 kernel/workqueue.c:2446 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff888064de2740 which belongs to the cache kernfs_node_cache of size 168 The buggy address is located 152 bytes inside of 168-byte region [ffff888064de2740, ffff888064de27e8) The buggy address belongs to the page: page:ffffea0001937880 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x64de2 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 dead000000000100 dead000000000122 ffff888010dc5a00 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 6583, ts 177318160712, free_ts 177312628642 prep_new_page mm/page_alloc.c:2424 [inline] get_page_from_freelist+0xa72/0x2f80 mm/page_alloc.c:4153 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5375 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2197 alloc_slab_page mm/slub.c:1763 [inline] allocate_slab mm/slub.c:1900 [inline] new_slab+0x319/0x490 mm/slub.c:1963 ___slab_alloc+0x921/0xfe0 mm/slub.c:2994 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3081 slab_alloc_node mm/slub.c:3172 [inline] slab_alloc mm/slub.c:3214 [inline] kmem_cache_alloc+0x365/0x390 mm/slub.c:3219 kmem_cache_zalloc include/linux/slab.h:711 [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+0x226/0x540 fs/sysfs/file.c:317 sysfs_merge_group+0x198/0x320 fs/sysfs/group.c:343 dpm_sysfs_add+0x241/0x290 drivers/base/power/sysfs.c:707 device_add+0xad8/0x21b0 drivers/base/core.c:3316 netdev_register_kobject+0x181/0x430 net/core/net-sysfs.c:1955 register_netdevice+0xd33/0x1500 net/core/dev.c:10299 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+0x2c5/0x780 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3315 [inline] free_unref_page+0x19/0x690 mm/page_alloc.c:3394 __vunmap+0x783/0xb70 mm/vmalloc.c:2621 free_work+0x58/0x70 mm/vmalloc.c:95 process_one_work+0x9bf/0x16b0 kernel/workqueue.c:2297 worker_thread+0x658/0x11f0 kernel/workqueue.c:2444 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Memory state around the buggy address: ffff888064de2680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888064de2700: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb >ffff888064de2780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc ^ ffff888064de2800: fc fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 ffff888064de2880: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc ==================================================================