em28xx 3-1:3.127: Closing input extension em28xx 3-1:3.127: Closing input extension em28xx 3-1:3.127: Closing input extension em28xx 3-1:3.127: Freeing device ================================================================== BUG: KASAN: use-after-free in __list_del_entry_valid+0xcc/0xf0 lib/list_debug.c:42 Read of size 8 at addr ffff888133188258 by task kworker/0:2/708 CPU: 0 PID: 708 Comm: kworker/0:2 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description.constprop.0.cold+0x8d/0x320 mm/kasan/report.c:247 __kasan_report mm/kasan/report.c:433 [inline] kasan_report.cold+0x83/0xdf mm/kasan/report.c:450 __list_del_entry_valid+0xcc/0xf0 lib/list_debug.c:42 __list_del_entry include/linux/list.h:134 [inline] list_del include/linux/list.h:148 [inline] em28xx_close_extension+0x10b/0x2a0 drivers/media/usb/em28xx/em28xx-core.c:1146 em28xx_usb_disconnect.cold+0xfc/0x260 drivers/media/usb/em28xx/em28xx-cards.c:4148 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 __device_release_driver+0x5d7/0x700 drivers/base/dd.c:1205 device_release_driver_internal drivers/base/dd.c:1236 [inline] device_release_driver+0x26/0x40 drivers/base/dd.c:1259 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x502/0xd60 drivers/base/core.c:3581 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x27a/0x78e drivers/usb/core/hub.c:2225 hub_port_connect drivers/usb/core/hub.c:5199 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x1c9c/0x4330 drivers/usb/core/hub.c:5716 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298 process_scheduled_works kernel/workqueue.c:2361 [inline] worker_thread+0x85c/0x11f0 kernel/workqueue.c:2447 kthread+0x40b/0x500 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 The buggy address belongs to the page: page:ffffea0004cc6200 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x133188 flags: 0x200000000000000(node=0|zone=2) raw: 0200000000000000 ffffea0004196b08 ffff8881f683d950 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 2, migratetype Unmovable, gfp_mask 0x140cc0(GFP_USER|__GFP_COMP), pid 708, ts 728280916580, free_ts 729190993453 prep_new_page mm/page_alloc.c:2418 [inline] get_page_from_freelist+0x122d/0x2940 mm/page_alloc.c:4149 __alloc_pages+0x1b2/0x500 mm/page_alloc.c:5369 alloc_pages+0x1a7/0x300 mm/mempolicy.c:2191 kmalloc_order+0x34/0xf0 mm/slab_common.c:949 kmalloc_order_trace+0x14/0x120 mm/slab_common.c:965 kmemdup+0x23/0x50 mm/util.c:128 kmemdup include/linux/fortify-string.h:304 [inline] em28xx_duplicate_dev drivers/media/usb/em28xx/em28xx-cards.c:3684 [inline] em28xx_usb_probe.cold+0x1313/0x2581 drivers/media/usb/em28xx/em28xx-cards.c:4032 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x245/0xcc0 drivers/base/dd.c:596 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:751 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:781 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:898 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:969 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc17/0x1ee0 drivers/base/core.c:3394 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1338 [inline] free_pcp_prepare+0x361/0x760 mm/page_alloc.c:1389 free_unref_page_prepare mm/page_alloc.c:3309 [inline] free_unref_page+0x19/0x580 mm/page_alloc.c:3388 kref_put include/linux/kref.h:65 [inline] em28xx_ir_fini.cold+0xaf/0x19b drivers/media/usb/em28xx/em28xx-input.c:874 em28xx_close_extension+0xc9/0x2a0 drivers/media/usb/em28xx/em28xx-core.c:1143 em28xx_usb_disconnect.cold+0xfc/0x260 drivers/media/usb/em28xx/em28xx-cards.c:4148 usb_unbind_interface+0x1d8/0x8e0 drivers/usb/core/driver.c:458 __device_release_driver+0x5d7/0x700 drivers/base/dd.c:1205 device_release_driver_internal drivers/base/dd.c:1236 [inline] device_release_driver+0x26/0x40 drivers/base/dd.c:1259 bus_remove_device+0x2eb/0x5a0 drivers/base/bus.c:529 device_del+0x502/0xd60 drivers/base/core.c:3581 usb_disable_device+0x35b/0x7b0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x27a/0x78e drivers/usb/core/hub.c:2225 hub_port_connect drivers/usb/core/hub.c:5199 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x1c9c/0x4330 drivers/usb/core/hub.c:5716 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298 process_scheduled_works kernel/workqueue.c:2361 [inline] worker_thread+0x85c/0x11f0 kernel/workqueue.c:2447 kthread+0x40b/0x500 kernel/kthread.c:327 Memory state around the buggy address: ffff888133188100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888133188180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888133188200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888133188280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888133188300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================