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_root fs/kernfs/kernfs-internal.h:66 [inline] BUG: KASAN: use-after-free in kernfs_next_descendant_post fs/kernfs/dir.c:1313 [inline] BUG: KASAN: use-after-free in kernfs_activate fs/kernfs/dir.c:1368 [inline] BUG: KASAN: use-after-free in kernfs_add_one+0x4ae/0x850 fs/kernfs/dir.c:800 Read of size 8 at addr ffff888016faf688 by task kworker/1:6/3636 CPU: 1 PID: 3636 Comm: kworker/1:6 Not tainted 6.1.87-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 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:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 kernfs_root fs/kernfs/kernfs-internal.h:66 [inline] kernfs_next_descendant_post fs/kernfs/dir.c:1313 [inline] kernfs_activate fs/kernfs/dir.c:1368 [inline] kernfs_add_one+0x4ae/0x850 fs/kernfs/dir.c:800 kernfs_create_link+0x160/0x1f0 fs/kernfs/symlink.c:48 sysfs_do_create_link_sd+0x85/0x100 fs/sysfs/symlink.c:44 device_add_class_symlinks drivers/base/core.c:3415 [inline] device_add+0x6b5/0xfd0 drivers/base/core.c:3634 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+0xc13/0x1200 drivers/base/firmware_loader/main.c:856 request_firmware_work_func+0x126/0x270 drivers/base/firmware_loader/main.c:1105 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:308 Allocated by task 3636: 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:682 [inline] __kernfs_new_node+0xd4/0x870 fs/kernfs/dir.c:608 kernfs_new_node+0x136/0x230 fs/kernfs/dir.c:684 kernfs_create_link+0xa1/0x1f0 fs/kernfs/symlink.c:39 sysfs_do_create_link_sd+0x85/0x100 fs/sysfs/symlink.c:44 device_add_class_symlinks drivers/base/core.c:3415 [inline] device_add+0x6b5/0xfd0 drivers/base/core.c:3634 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+0xc13/0x1200 drivers/base/firmware_loader/main.c:856 request_firmware_work_func+0x126/0x270 drivers/base/firmware_loader/main.c:1105 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:308 Freed by task 154: 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:562 __kernfs_remove+0x5fc/0x710 fs/kernfs/dir.c:1467 kernfs_remove+0x76/0x90 fs/kernfs/dir.c:1487 __kobject_del+0xe2/0x310 lib/kobject.c:596 kobject_del+0x41/0x60 lib/kobject.c:619 device_del+0x9fe/0xbd0 drivers/base/core.c:3896 usb_disconnect+0x58f/0x8c0 drivers/usb/core/hub.c:2295 hub_port_connect drivers/usb/core/hub.c:5309 [inline] hub_port_connect_change drivers/usb/core/hub.c:5605 [inline] port_event drivers/usb/core/hub.c:5761 [inline] hub_event+0x1f78/0x5730 drivers/usb/core/hub.c:5843 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:308 The buggy address belongs to the object at ffff888016faf658 which belongs to the cache kernfs_node_cache of size 168 The buggy address is located 48 bytes inside of 168-byte region [ffff888016faf658, ffff888016faf700) The buggy address belongs to the physical page: page:ffffea00005bebc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x16faf flags: 0xfff80000000200(slab|node=0|zone=1|lastcpupid=0xfff) raw: 00fff80000000200 dead000000000100 dead000000000122 ffff888140009c80 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 3805, tgid 3805 (syz-executor.4), ts 86653843181, free_ts 86555785473 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513 prep_new_page mm/page_alloc.c:2520 [inline] get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5547 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:682 [inline] __kernfs_new_node+0xd4/0x870 fs/kernfs/dir.c:608 kernfs_new_node+0x136/0x230 fs/kernfs/dir.c:684 __kernfs_create_file+0x45/0x2e0 fs/kernfs/file.c:1043 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 netdev_queue_add_kobject net/core/net-sysfs.c:1666 [inline] netdev_queue_update_kobjects+0x1f2/0x480 net/core/net-sysfs.c:1718 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1440 [inline] free_pcp_prepare mm/page_alloc.c:1490 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3358 free_unref_page_list+0x663/0x900 mm/page_alloc.c:3499 release_pages+0x2836/0x2b40 mm/swap.c:1055 __pagevec_release+0x80/0xf0 mm/swap.c:1075 pagevec_release include/linux/pagevec.h:71 [inline] folio_batch_release include/linux/pagevec.h:135 [inline] truncate_inode_pages_range+0x48a/0x1340 mm/truncate.c:372 kill_bdev block/bdev.c:76 [inline] blkdev_flush_mapping+0x154/0x2b0 block/bdev.c:664 blkdev_put_whole block/bdev.c:695 [inline] blkdev_put+0x4c0/0x750 block/bdev.c:955 deactivate_locked_super+0xa0/0x110 fs/super.c:332 cleanup_mnt+0x490/0x520 fs/namespace.c:1186 task_work_run+0x246/0x300 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 Memory state around the buggy address: ffff888016faf580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888016faf600: 00 00 00 fc fc fc fc fc fc fc fc fa fb fb fb fb >ffff888016faf680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888016faf700: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb ffff888016faf780: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc ==================================================================