usb 5-1: Direct firmware load for ueagle-atm/eagleII.fw failed with error -2 usb 5-1: Falling back to sysfs fallback for: ueagle-atm/eagleII.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:1251 [inline] BUG: KASAN: use-after-free in kernfs_next_descendant_post+0x184/0x200 fs/kernfs/dir.c:1282 Read of size 2 at addr ffff8880604a1a90 by task kworker/1:8/4210 CPU: 1 PID: 4210 Comm: kworker/1:8 Not tainted 5.15.174-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Workqueue: events request_firmware_work_func Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 print_address_description+0x63/0x3b0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x16b/0x1c0 mm/kasan/report.c:451 kernfs_type include/linux/kernfs.h:294 [inline] kernfs_leftmost_descendant fs/kernfs/dir.c:1251 [inline] kernfs_next_descendant_post+0x184/0x200 fs/kernfs/dir.c:1282 kernfs_activate+0x28/0x200 fs/kernfs/dir.c:1317 kernfs_add_one+0x4f3/0x640 fs/kernfs/dir.c:788 kernfs_create_dir_ns+0xd5/0x120 fs/kernfs/dir.c:1015 sysfs_create_dir_ns+0x185/0x390 fs/sysfs/dir.c:59 create_dir lib/kobject.c:89 [inline] kobject_add_internal+0x6e0/0xe00 lib/kobject.c:263 kobject_add_varg lib/kobject.c:398 [inline] kobject_add+0x14e/0x210 lib/kobject.c:450 class_dir_create_and_add drivers/base/core.c:2966 [inline] get_device_parent+0x391/0x400 drivers/base/core.c:3021 device_add+0x336/0xfd0 drivers/base/core.c:3333 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+0x3f0/0xc90 drivers/base/firmware_loader/fallback.c:659 _request_firmware+0xc72/0x12c0 drivers/base/firmware_loader/main.c:876 request_firmware_work_func+0x126/0x270 drivers/base/firmware_loader/main.c:1127 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Allocated by task 4210: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8e/0xc0 mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x53/0x380 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0xf3/0x280 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:711 [inline] __kernfs_new_node+0xdb/0x750 fs/kernfs/dir.c:593 kernfs_new_node+0x136/0x230 fs/kernfs/dir.c:669 kernfs_create_dir_ns+0x3f/0x120 fs/kernfs/dir.c:1005 sysfs_create_dir_ns+0x185/0x390 fs/sysfs/dir.c:59 create_dir lib/kobject.c:89 [inline] kobject_add_internal+0x6e0/0xe00 lib/kobject.c:263 kobject_add_varg lib/kobject.c:398 [inline] kobject_add+0x14e/0x210 lib/kobject.c:450 class_dir_create_and_add drivers/base/core.c:2966 [inline] get_device_parent+0x391/0x400 drivers/base/core.c:3021 device_add+0x336/0xfd0 drivers/base/core.c:3333 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+0x3f0/0xc90 drivers/base/firmware_loader/fallback.c:659 _request_firmware+0xc72/0x12c0 drivers/base/firmware_loader/main.c:876 request_firmware_work_func+0x126/0x270 drivers/base/firmware_loader/main.c:1127 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 worker_thread+0xaca/0x1280 kernel/workqueue.c:2457 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Freed by task 2303: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x91/0x1f0 mm/slub.c:3515 kernfs_put+0x325/0x4a0 fs/kernfs/dir.c:547 __kernfs_remove+0x99e/0xc80 fs/kernfs/dir.c:1393 kernfs_remove+0x1d/0x30 fs/kernfs/dir.c:1406 __kobject_del+0xe2/0x310 lib/kobject.c:628 kobject_del+0x41/0x60 lib/kobject.c:651 device_del+0x9fe/0xbd0 drivers/base/core.c:3612 usb_disconnect+0x58f/0x8c0 drivers/usb/core/hub.c:2274 hub_port_connect drivers/usb/core/hub.c:5299 [inline] hub_port_connect_change drivers/usb/core/hub.c:5595 [inline] port_event drivers/usb/core/hub.c:5741 [inline] hub_event+0x1d58/0x54c0 drivers/usb/core/hub.c:5823 process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310 process_scheduled_works kernel/workqueue.c:2373 [inline] worker_thread+0xdcf/0x1280 kernel/workqueue.c:2459 kthread+0x3f6/0x4f0 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 The buggy address belongs to the object at ffff8880604a19f8 which belongs to the cache kernfs_node_cache of size 168 The buggy address is located 152 bytes inside of 168-byte region [ffff8880604a19f8, ffff8880604a1aa0) The buggy address belongs to the page: page:ffffea0001812840 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x604a1 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea0001817c40 0000000c0000000c ffff8880175eab40 raw: 0000000000000000 0000000000110011 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 4173, ts 62741494066, free_ts 19214583140 prep_new_page mm/page_alloc.c:2426 [inline] get_page_from_freelist+0x3b78/0x3d40 mm/page_alloc.c:4192 __alloc_pages+0x272/0x700 mm/page_alloc.c:5465 alloc_slab_page mm/slub.c:1775 [inline] allocate_slab mm/slub.c:1912 [inline] new_slab+0xbb/0x4b0 mm/slub.c:1975 ___slab_alloc+0x6f6/0xe10 mm/slub.c:3008 __slab_alloc mm/slub.c:3095 [inline] slab_alloc_node mm/slub.c:3186 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x18e/0x280 mm/slub.c:3233 kmem_cache_zalloc include/linux/slab.h:711 [inline] __kernfs_new_node+0xdb/0x750 fs/kernfs/dir.c:593 kernfs_new_node+0x136/0x230 fs/kernfs/dir.c:669 __kernfs_create_file+0x45/0x2e0 fs/kernfs/file.c:985 sysfs_add_file_mode_ns+0x308/0x3e0 fs/sysfs/file.c:317 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x573/0xf00 fs/sysfs/group.c:149 internal_create_groups fs/sysfs/group.c:189 [inline] sysfs_create_groups+0x52/0x110 fs/sysfs/group.c:215 create_dir lib/kobject.c:100 [inline] kobject_add_internal+0x83b/0xe00 lib/kobject.c:263 kobject_add_varg lib/kobject.c:398 [inline] kobject_init_and_add+0x120/0x190 lib/kobject.c:481 netdev_queue_add_kobject net/core/net-sysfs.c:1666 [inline] netdev_queue_update_kobjects+0x186/0x3f0 net/core/net-sysfs.c:1711 register_queue_kobjects net/core/net-sysfs.c:1772 [inline] netdev_register_kobject+0x263/0x310 net/core/net-sysfs.c:2018 register_netdevice+0x108c/0x1720 net/core/dev.c:10365 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1340 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0xc34/0xcf0 mm/page_alloc.c:3317 free_unref_page+0x95/0x2d0 mm/page_alloc.c:3396 free_contig_range+0x95/0xf0 mm/page_alloc.c:9384 destroy_args+0xfe/0x980 mm/debug_vm_pgtable.c:1018 debug_vm_pgtable+0x40d/0x470 mm/debug_vm_pgtable.c:1331 do_one_initcall+0x22b/0x7a0 init/main.c:1302 do_initcall_level+0x157/0x210 init/main.c:1375 do_initcalls+0x49/0x90 init/main.c:1391 kernel_init_freeable+0x425/0x5c0 init/main.c:1615 kernel_init+0x19/0x290 init/main.c:1506 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Memory state around the buggy address: ffff8880604a1980: fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc fa ffff8880604a1a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8880604a1a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb ^ ffff8880604a1b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8880604a1b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb ==================================================================