usb 4-1: [ueagle-atm] pre-firmware device, uploading firmware usb 4-1: [ueagle-atm] loading firmware ueagle-atm/eagleI.fw usb 4-1: [ueagle-atm] pre-firmware device, uploading firmware usb 4-1: [ueagle-atm] loading firmware ueagle-atm/eagleI.fw usb 4-1: USB disconnect, device number 2 ================================================================== BUG: KASAN: slab-out-of-bounds in __mutex_lock_common kernel/locking/mutex.c:625 [inline] BUG: KASAN: slab-out-of-bounds in __mutex_lock+0x15ca/0x1bd0 kernel/locking/mutex.c:821 Read of size 8 at addr ffff888106a93a60 by task kworker/0:2/779 CPU: 0 UID: 0 PID: 779 Comm: kworker/0:2 Not tainted syzkaller #0 PREEMPT(lazy) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x13d/0x4b0 mm/kasan/report.c:482 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595 __mutex_lock_common kernel/locking/mutex.c:625 [inline] __mutex_lock+0x15ca/0x1bd0 kernel/locking/mutex.c:821 usbatm_usb_disconnect+0x70/0x7e0 drivers/usb/atm/usbatm.c:1221 uea_disconnect+0x279/0x2b0 drivers/usb/atm/ueagle-atm.c:2605 usb_unbind_interface+0x1dd/0x9e0 drivers/usb/core/driver.c:461 device_remove drivers/base/dd.c:618 [inline] device_remove+0x12a/0x180 drivers/base/dd.c:610 __device_release_driver drivers/base/dd.c:1349 [inline] device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372 bus_remove_device+0x2bc/0x560 drivers/base/bus.c:664 device_del+0x376/0x9b0 drivers/base/core.c:3961 usb_disable_device+0x367/0x810 drivers/usb/core/message.c:1478 usb_disconnect+0x2e2/0x9a0 drivers/usb/core/hub.c:2345 hub_port_connect drivers/usb/core/hub.c:5407 [inline] hub_port_connect_change drivers/usb/core/hub.c:5707 [inline] port_event drivers/usb/core/hub.c:5871 [inline] hub_event+0x1d0c/0x4af0 drivers/usb/core/hub.c:5953 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322 process_scheduled_works kernel/workqueue.c:3405 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Allocated by task 2: kasan_save_stack+0x30/0x50 mm/kasan/common.c:57 kasan_save_track+0x14/0x30 mm/kasan/common.c:78 poison_kmalloc_redzone mm/kasan/common.c:398 [inline] __kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:415 kasan_kmalloc include/linux/kasan.h:263 [inline] __kmalloc_cache_node_noprof+0x2e0/0x670 mm/slub.c:5534 _kmalloc_node_noprof include/linux/slab.h:1174 [inline] __get_vm_area_node+0x101/0x330 mm/vmalloc.c:3215 __vmalloc_node_range_noprof+0x228/0x1630 mm/vmalloc.c:4042 __vmalloc_node_noprof+0xad/0xf0 mm/vmalloc.c:4143 alloc_thread_stack_node kernel/fork.c:359 [inline] dup_task_struct kernel/fork.c:929 [inline] copy_process+0x7fb/0x7dd0 kernel/fork.c:2115 kernel_clone+0x176/0x9d0 kernel/fork.c:2748 kernel_thread+0xdb/0x120 kernel/fork.c:2809 create_kthread kernel/kthread.c:459 [inline] kthreadd+0x498/0x7a0 kernel/kthread.c:817 ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 The buggy address belongs to the object at ffff888106a93a00 which belongs to the cache kmalloc-96 of size 96 The buggy address is located 24 bytes to the right of allocated 72-byte region [ffff888106a93a00, ffff888106a93a48) The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106a93 flags: 0x200000000000000(node=0|zone=2) page_type: f5(slab) raw: 0200000000000000 ffff888100041280 dead000000000100 dead000000000122 raw: 0000000000000000 0000000800200020 00000000f5000000 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 0xd2cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 3632134795, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1859 prep_new_page mm/page_alloc.c:1867 [inline] get_page_from_freelist+0xf25/0x3400 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x28f/0x2b90 mm/page_alloc.c:5304 alloc_slab_page mm/slub.c:3294 [inline] allocate_slab mm/slub.c:3408 [inline] new_slab+0xa2/0x670 mm/slub.c:3454 refill_objects+0xe3/0x410 mm/slub.c:7338 refill_sheaf mm/slub.c:2832 [inline] __pcs_replace_empty_main+0x376/0x680 mm/slub.c:4703 alloc_from_pcs mm/slub.c:4801 [inline] slab_alloc_node mm/slub.c:4933 [inline] __kmalloc_cache_node_noprof+0x4b3/0x670 mm/slub.c:5530 _kmalloc_node_noprof include/linux/slab.h:1174 [inline] alloc_node_nr_active kernel/workqueue.c:5005 [inline] __alloc_workqueue+0x781/0x1940 kernel/workqueue.c:5887 alloc_workqueue_va kernel/workqueue.c:5946 [inline] alloc_workqueue_noprof+0xc7/0x130 kernel/workqueue.c:5962 edac_workqueue_setup+0x20/0x50 drivers/edac/wq.c:31 edac_init+0x6e/0xc0 drivers/edac/edac_module.c:127 do_one_initcall+0x11d/0x700 init/main.c:1347 do_initcall_level init/main.c:1409 [inline] do_initcalls init/main.c:1425 [inline] do_basic_setup init/main.c:1445 [inline] kernel_init_freeable+0x6ea/0x7b0 init/main.c:1658 kernel_init+0x1f/0x1e0 init/main.c:1548 ret_from_fork+0x69a/0xc80 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 page_owner free stack trace missing Memory state around the buggy address: ffff888106a93900: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff888106a93980: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc >ffff888106a93a00: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc ^ ffff888106a93a80: fa fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff888106a93b00: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc 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