usb 1-1: Direct firmware load for ueagle-atm/eagleI.fw failed with error -2 usb 1-1: Falling back to sysfs fallback for: ueagle-atm/eagleI.fw ================================================================== BUG: KASAN: use-after-free in kernfs_root fs/kernfs/kernfs-internal.h:66 [inline] BUG: KASAN: use-after-free in kernfs_add_one+0x40a/0x8f0 fs/kernfs/dir.c:805 Read of size 8 at addr ffff888029db1bf8 by task kworker/0:2/128 CPU: 0 PID: 128 Comm: kworker/0:2 Not tainted 6.1.138-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Workqueue: events request_firmware_work_func Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0xa8/0x220 mm/kasan/report.c:427 kasan_report+0x10b/0x140 mm/kasan/report.c:531 kernfs_root fs/kernfs/kernfs-internal.h:66 [inline] kernfs_add_one+0x40a/0x8f0 fs/kernfs/dir.c:805 kernfs_create_dir_ns+0xda/0x120 fs/kernfs/dir.c:1056 sysfs_create_dir_ns+0x120/0x280 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6b8/0xc80 lib/kobject.c:231 kobject_add_varg lib/kobject.c:366 [inline] kobject_add+0x152/0x210 lib/kobject.c:418 class_dir_create_and_add drivers/base/core.c:3234 [inline] get_device_parent+0x380/0x3f0 drivers/base/core.c:3289 device_add+0x335/0xfb0 drivers/base/core.c:3618 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+0x2e5/0x930 drivers/base/firmware_loader/fallback.c:234 _request_firmware+0xcad/0x1290 drivers/base/firmware_loader/main.c:884 request_firmware_work_func+0xac/0x1b0 drivers/base/firmware_loader/main.c:1135 process_one_work+0x898/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 128: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x6b/0x80 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x123/0x2f0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:689 [inline] __kernfs_new_node+0xd4/0x7d0 fs/kernfs/dir.c:614 kernfs_new_node+0x148/0x250 fs/kernfs/dir.c:690 kernfs_create_dir_ns+0x40/0x120 fs/kernfs/dir.c:1046 sysfs_create_dir_ns+0x120/0x280 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6b8/0xc80 lib/kobject.c:231 kobject_add_varg lib/kobject.c:366 [inline] kobject_add+0x152/0x210 lib/kobject.c:418 class_dir_create_and_add drivers/base/core.c:3234 [inline] get_device_parent+0x380/0x3f0 drivers/base/core.c:3289 device_add+0x335/0xfb0 drivers/base/core.c:3618 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+0x2e5/0x930 drivers/base/firmware_loader/fallback.c:234 _request_firmware+0xcad/0x1290 drivers/base/firmware_loader/main.c:884 request_firmware_work_func+0xac/0x1b0 drivers/base/firmware_loader/main.c:1135 process_one_work+0x898/0x1160 kernel/workqueue.c:2292 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Freed by task 4307: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x2d/0x50 mm/kasan/generic.c:516 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook+0x131/0x1a0 mm/slub.c:1750 slab_free mm/slub.c:3661 [inline] kmem_cache_free+0xf7/0x290 mm/slub.c:3683 kernfs_put+0x319/0x490 fs/kernfs/dir.c:568 __kernfs_remove+0x5db/0x6d0 fs/kernfs/dir.c:1480 kernfs_remove+0x76/0x90 fs/kernfs/dir.c:1500 __kobject_del+0xe1/0x2f0 lib/kobject.c:596 kobject_del+0x41/0x60 lib/kobject.c:619 device_del+0x8f8/0xa70 drivers/base/core.c:3907 usb_disconnect+0x573/0x8a0 drivers/usb/core/hub.c:2312 hub_port_connect drivers/usb/core/hub.c:5333 [inline] hub_port_connect_change drivers/usb/core/hub.c:5629 [inline] port_event drivers/usb/core/hub.c:5785 [inline] hub_event+0x1d20/0x5210 drivers/usb/core/hub.c:5867 process_one_work+0x898/0x1160 kernel/workqueue.c:2292 process_scheduled_works kernel/workqueue.c:2355 [inline] worker_thread+0xd62/0x1250 kernel/workqueue.c:2441 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff888029db1bc8 which belongs to the cache kernfs_node_cache of size 168 The buggy address is located 48 bytes inside of 168-byte region [ffff888029db1bc8, ffff888029db1c70) The buggy address belongs to the physical page: page:ffffea0000a76c40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x29db1 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea000167c800 dead000000000003 ffff888017639c80 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 4268, tgid 4268 (syz-executor), ts 92292299236, free_ts 92290238383 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2532 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x1a26/0x1ac0 mm/page_alloc.c:4328 __alloc_pages+0x1df/0x4e0 mm/page_alloc.c:5606 alloc_slab_page+0x5d/0x160 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x87/0x2c0 mm/slub.c:1992 ___slab_alloc+0xbc6/0x1220 mm/slub.c:3180 __slab_alloc mm/slub.c:3279 [inline] slab_alloc_node mm/slub.c:3364 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x1b7/0x2f0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:689 [inline] __kernfs_new_node+0xd4/0x7d0 fs/kernfs/dir.c:614 kernfs_new_node+0x148/0x250 fs/kernfs/dir.c:690 __kernfs_create_file+0x47/0x2e0 fs/kernfs/file.c:1049 sysfs_add_file_mode_ns+0x234/0x2f0 fs/sysfs/file.c:294 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x487/0xce0 fs/sysfs/group.c:148 netdev_queue_add_kobject net/core/net-sysfs.c:1670 [inline] netdev_queue_update_kobjects+0x224/0x480 net/core/net-sysfs.c:1716 register_queue_kobjects net/core/net-sysfs.c:1777 [inline] netdev_register_kobject+0x265/0x310 net/core/net-sysfs.c:2017 register_netdevice+0x12b9/0x1aa0 net/core/dev.c:10192 veth_newlink+0x7a0/0xbe0 drivers/net/veth.c:1755 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1459 [inline] free_pcp_prepare mm/page_alloc.c:1509 [inline] free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3384 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3479 free_slab mm/slub.c:2031 [inline] discard_slab mm/slub.c:2037 [inline] __unfreeze_partials+0x1a5/0x200 mm/slub.c:2586 put_cpu_partial+0x17c/0x250 mm/slub.c:2662 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x144/0x160 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1e/0x80 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x4b/0x480 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] __kmem_cache_alloc_node+0x140/0x260 mm/slub.c:3437 kmalloc_trace+0x26/0xe0 mm/slab_common.c:1026 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:699 [inline] kset_create lib/kobject.c:950 [inline] kset_create_and_add+0x56/0x160 lib/kobject.c:993 register_queue_kobjects net/core/net-sysfs.c:1764 [inline] netdev_register_kobject+0x1a0/0x310 net/core/net-sysfs.c:2017 register_netdevice+0x12b9/0x1aa0 net/core/dev.c:10192 veth_newlink+0x7a0/0xbe0 drivers/net/veth.c:1755 rtnl_newlink_create net/core/rtnetlink.c:3422 [inline] __rtnl_newlink net/core/rtnetlink.c:3642 [inline] rtnl_newlink+0x14c4/0x1ff0 net/core/rtnetlink.c:3655 rtnetlink_rcv_msg+0x79b/0xed0 net/core/rtnetlink.c:6153 Memory state around the buggy address: ffff888029db1a80: fb fb fb fb fc fc fc fc fc fc fc fc fb fb fb fb ffff888029db1b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff888029db1b80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb ^ ffff888029db1c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc ffff888029db1c80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb ==================================================================