usb 4-1: Direct firmware load for ueagle-atm/eagleII.fw failed with error -2 usb 4-1: 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_next_descendant_post fs/kernfs/dir.c:1289 [inline] BUG: KASAN: use-after-free in kernfs_activate+0xd0/0x3a0 fs/kernfs/dir.c:1344 Read of size 8 at addr ffff888079194b10 by task kworker/1:12/5383 CPU: 1 PID: 5383 Comm: kworker/1:12 Not tainted 6.1.0-rc4-syzkaller-00011-g59f2f4b8a757 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 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+0x74/0x340 mm/kasan/report.c:284 print_report+0x107/0x220 mm/kasan/report.c:395 kasan_report+0x139/0x170 mm/kasan/report.c:495 kernfs_root fs/kernfs/kernfs-internal.h:66 [inline] kernfs_next_descendant_post fs/kernfs/dir.c:1289 [inline] kernfs_activate+0xd0/0x3a0 fs/kernfs/dir.c:1344 kernfs_add_one+0x465/0x560 fs/kernfs/dir.c:776 kernfs_create_dir_ns+0x1bf/0x220 fs/kernfs/dir.c:1021 sysfs_create_dir_ns+0x181/0x390 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6dd/0xd10 lib/kobject.c:223 kobject_add_varg lib/kobject.c:358 [inline] kobject_add+0x14c/0x210 lib/kobject.c:410 device_add+0x47d/0xf90 drivers/base/core.c:3452 fw_load_sysfs_fallback+0xd4/0x5e0 drivers/base/firmware_loader/fallback.c:82 fw_load_from_user_helper+0x12d/0x1f0 drivers/base/firmware_loader/fallback.c:158 _request_firmware+0x446/0x6a0 drivers/base/firmware_loader/main.c:856 request_firmware_work_func+0x125/0x270 drivers/base/firmware_loader/main.c:1105 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Allocated by task 5383: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x70 mm/kasan/common.c:52 __kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:325 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:737 [inline] 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+0x1cc/0x300 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:702 [inline] __kernfs_new_node+0xdb/0x730 fs/kernfs/dir.c:603 kernfs_new_node fs/kernfs/dir.c:665 [inline] kernfs_create_dir_ns+0x90/0x220 fs/kernfs/dir.c:1011 sysfs_create_dir_ns+0x181/0x390 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6dd/0xd10 lib/kobject.c:223 kobject_add_varg lib/kobject.c:358 [inline] kobject_add+0x14c/0x210 lib/kobject.c:410 device_add+0x47d/0xf90 drivers/base/core.c:3452 fw_load_sysfs_fallback+0xd4/0x5e0 drivers/base/firmware_loader/fallback.c:82 fw_load_from_user_helper+0x12d/0x1f0 drivers/base/firmware_loader/fallback.c:158 _request_firmware+0x446/0x6a0 drivers/base/firmware_loader/main.c:856 request_firmware_work_func+0x125/0x270 drivers/base/firmware_loader/main.c:1105 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Freed by task 3754: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x70 mm/kasan/common.c:52 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:511 ____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+0x12e/0x1a0 mm/slub.c:1750 slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x94/0x1d0 mm/slub.c:3683 kernfs_put+0x340/0x490 fs/kernfs/dir.c:557 __kernfs_remove+0x980/0xa90 fs/kernfs/dir.c:1443 kernfs_remove+0x76/0x90 fs/kernfs/dir.c:1463 __kobject_del+0xdc/0x300 lib/kobject.c:588 kobject_del+0x41/0x60 lib/kobject.c:611 device_del+0xa10/0xbe0 drivers/base/core.c:3715 usb_disconnect+0x56e/0x890 drivers/usb/core/hub.c:2261 hub_port_connect+0x296/0x2910 drivers/usb/core/hub.c:5197 hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5497 port_event+0xec6/0x13b0 drivers/usb/core/hub.c:5653 hub_event+0x5c1/0xd80 drivers/usb/core/hub.c:5735 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0xe16/0x1330 kernel/workqueue.c:2438 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 The buggy address belongs to the object at ffff888079194ae0 which belongs to the cache kernfs_node_cache of size 168 The buggy address is located 48 bytes inside of 168-byte region [ffff888079194ae0, ffff888079194b88) The buggy address belongs to the physical page: page:ffffea0001e46500 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x79194 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000200 ffffea00009ddc80 dead000000000004 ffff8880121d5dc0 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 3659, tgid 3659 (syz-executor.4), ts 217350520729, free_ts 217156331022 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x72b/0x7a0 mm/page_alloc.c:4288 __alloc_pages+0x259/0x560 mm/page_alloc.c:5555 alloc_slab_page+0x70/0xf0 mm/slub.c:1794 allocate_slab+0x5e/0x4b0 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0x7f4/0xeb0 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+0x24c/0x300 mm/slub.c:3422 kmem_cache_zalloc include/linux/slab.h:702 [inline] __kernfs_new_node+0xdb/0x730 fs/kernfs/dir.c:603 kernfs_new_node fs/kernfs/dir.c:665 [inline] kernfs_create_dir_ns+0x90/0x220 fs/kernfs/dir.c:1011 sysfs_create_dir_ns+0x181/0x390 fs/sysfs/dir.c:59 create_dir lib/kobject.c:63 [inline] kobject_add_internal+0x6dd/0xd10 lib/kobject.c:223 kset_register lib/kobject.c:846 [inline] kset_create_and_add+0x201/0x280 lib/kobject.c:983 register_queue_kobjects net/core/net-sysfs.c:1766 [inline] netdev_register_kobject+0x1a2/0x310 net/core/net-sysfs.c:2019 register_netdevice+0x136c/0x1a20 net/core/dev.c:10057 veth_newlink+0x638/0xd10 drivers/net/veth.c:1764 rtnl_newlink_create net/core/rtnetlink.c:3364 [inline] __rtnl_newlink net/core/rtnetlink.c:3581 [inline] rtnl_newlink+0x14ed/0x2060 net/core/rtnetlink.c:3594 rtnetlink_rcv_msg+0x7b8/0xe90 net/core/rtnetlink.c:6091 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+0x80c/0x8f0 mm/page_alloc.c:1509 free_unref_page_prepare mm/page_alloc.c:3387 [inline] free_unref_page+0x7d/0x630 mm/page_alloc.c:3483 free_slab mm/slub.c:2031 [inline] discard_slab mm/slub.c:2037 [inline] __unfreeze_partials+0x1ab/0x200 mm/slub.c:2586 put_cpu_partial+0x116/0x180 mm/slub.c:2662 qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slab.h:737 [inline] slab_alloc_node mm/slub.c:3398 [inline] __kmem_cache_alloc_node+0x1d7/0x310 mm/slub.c:3437 kmalloc_trace+0x26/0x60 mm/slab_common.c:1046 kmalloc include/linux/slab.h:576 [inline] kzalloc include/linux/slab.h:712 [inline] kobject_uevent_env+0x33a/0x8e0 lib/kobject_uevent.c:524 __kobject_del+0xcd/0x300 lib/kobject.c:585 kobject_cleanup+0x25d/0x470 lib/kobject.c:664 netdev_queue_update_kobjects+0x417/0x4c0 net/core/net-sysfs.c:1733 netif_set_real_num_tx_queues+0x16d/0x880 net/core/dev.c:2893 veth_init_queues+0x81/0x170 drivers/net/veth.c:1687 veth_newlink+0xa59/0xd10 drivers/net/veth.c:1813 Memory state around the buggy address: ffff888079194a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff888079194a80: fb fb fb fb fc fc fc fc fc fc fc fc fa fb fb fb >ffff888079194b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff888079194b80: fb fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 ffff888079194c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc fc ==================================================================