usb 1-1: Direct firmware load for ueagle-atm/eagleII.fw failed with error -2 usb 1-1: 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_add_one+0x3fe/0x850 fs/kernfs/dir.c:805 Read of size 8 at addr ffff888018afcce0 by task kworker/1:5/4294 CPU: 1 PID: 4294 Comm: kworker/1:5 Tainted: G W 6.1.121-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events request_firmware_work_func Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:427 kasan_report+0x136/0x160 mm/kasan/report.c:531 kernfs_root fs/kernfs/kernfs-internal.h:66 [inline] kernfs_add_one+0x3fe/0x850 fs/kernfs/dir.c:805 kernfs_create_dir_ns+0xd5/0x120 fs/kernfs/dir.c:1056 sysfs_create_dir_ns+0x185/0x390 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6df/0xd10 lib/kobject.c:231 kobject_add_varg lib/kobject.c:366 [inline] kobject_add+0x14e/0x210 lib/kobject.c:418 class_dir_create_and_add drivers/base/core.c:3233 [inline] get_device_parent+0x391/0x400 drivers/base/core.c:3288 device_add+0x336/0xfd0 drivers/base/core.c:3617 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+0x2fd/0x940 drivers/base/firmware_loader/fallback.c:234 _request_firmware+0xcf0/0x12b0 drivers/base/firmware_loader/main.c:884 request_firmware_work_func+0x126/0x270 drivers/base/firmware_loader/main.c:1135 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Allocated by task 4294: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 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+0x10c/0x2d0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:689 [inline] __kernfs_new_node+0xd4/0x870 fs/kernfs/dir.c:614 kernfs_new_node+0x136/0x230 fs/kernfs/dir.c:690 kernfs_create_dir_ns+0x3f/0x120 fs/kernfs/dir.c:1046 sysfs_create_dir_ns+0x185/0x390 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6df/0xd10 lib/kobject.c:231 kobject_add_varg lib/kobject.c:366 [inline] kobject_add+0x14e/0x210 lib/kobject.c:418 class_dir_create_and_add drivers/base/core.c:3233 [inline] get_device_parent+0x391/0x400 drivers/base/core.c:3288 device_add+0x336/0xfd0 drivers/base/core.c:3617 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+0x2fd/0x940 drivers/base/firmware_loader/fallback.c:234 _request_firmware+0xcf0/0x12b0 drivers/base/firmware_loader/main.c:884 request_firmware_work_func+0x126/0x270 drivers/base/firmware_loader/main.c:1135 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 worker_thread+0xa47/0x1200 kernel/workqueue.c:2439 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Freed by task 22: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516 ____kasan_slab_free+0xd6/0x120 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 mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x292/0x510 mm/slub.c:3683 kernfs_put+0x325/0x4a0 fs/kernfs/dir.c:568 __kernfs_remove+0x5fc/0x710 fs/kernfs/dir.c:1480 kernfs_remove+0x76/0x90 fs/kernfs/dir.c:1500 __kobject_del+0xe2/0x310 lib/kobject.c:596 kobject_del+0x41/0x60 lib/kobject.c:619 device_del+0x9fe/0xbd0 drivers/base/core.c:3906 usb_disconnect+0x58f/0x8c0 drivers/usb/core/hub.c:2301 hub_port_connect drivers/usb/core/hub.c:5321 [inline] hub_port_connect_change drivers/usb/core/hub.c:5617 [inline] port_event drivers/usb/core/hub.c:5773 [inline] hub_event+0x1f78/0x5730 drivers/usb/core/hub.c:5855 process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292 process_scheduled_works kernel/workqueue.c:2355 [inline] worker_thread+0xd04/0x1200 kernel/workqueue.c:2441 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the object at ffff888018afccb0 which belongs to the cache kernfs_node_cache of size 168 The buggy address is located 48 bytes inside of 168-byte region [ffff888018afccb0, ffff888018afcd58) The buggy address belongs to the physical page: page:ffffea000062bf00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x18afc flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 0000000000000000 dead000000000001 ffff888017e39c80 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 10959, tgid 10958 (syz.2.2815), ts 279847953592, free_ts 279719119239 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2532 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x3731/0x38d0 mm/page_alloc.c:4328 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5605 alloc_slab_page+0x6a/0x150 mm/slub.c:1794 allocate_slab mm/slub.c:1939 [inline] new_slab+0x84/0x2d0 mm/slub.c:1992 ___slab_alloc+0xc20/0x1270 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+0x1a5/0x2d0 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:689 [inline] __kernfs_new_node+0xd4/0x870 fs/kernfs/dir.c:614 kernfs_new_node+0x136/0x230 fs/kernfs/dir.c:690 __kernfs_create_file+0x45/0x2e0 fs/kernfs/file.c:1049 sysfs_add_file_mode_ns+0x246/0x300 fs/sysfs/file.c:294 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x545/0xed0 fs/sysfs/group.c:148 internal_create_groups fs/sysfs/group.c:188 [inline] sysfs_create_groups+0x52/0x110 fs/sysfs/group.c:214 create_dir lib/kobject.c:68 [inline] kobject_add_internal+0x725/0xd10 lib/kobject.c:231 kobject_add_varg lib/kobject.c:366 [inline] kobject_init_and_add+0x120/0x190 lib/kobject.c:449 ext4_register_sysfs+0xb2/0x2b0 fs/ext4/sysfs.c:531 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+0x12a6/0x15b0 mm/page_alloc.c:3384 free_unref_page_list+0x663/0x900 mm/page_alloc.c:3525 release_pages+0x24c4/0x27a0 mm/swap.c:1035 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu+0xfc/0x210 mm/mmu_gather.c:261 tlb_finish_mmu+0xce/0x1f0 mm/mmu_gather.c:361 exit_mmap+0x3b3/0x980 mm/mmap.c:3250 __mmput+0x115/0x3c0 kernel/fork.c:1200 exit_mm+0x226/0x300 kernel/exit.c:565 do_exit+0x9f6/0x26a0 kernel/exit.c:858 do_group_exit+0x202/0x2b0 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1030 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Memory state around the buggy address: ffff888018afcb80: fb fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb ffff888018afcc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc >ffff888018afcc80: fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb fb ^ ffff888018afcd00: fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fc ffff888018afcd80: fc fc fc fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================