usb 4-1: config 0 descriptor?? ================================================================== BUG: KASAN: slab-out-of-bounds in usb_endpoint_xfer_bulk include/uapi/linux/usb/ch9.h:518 [inline] BUG: KASAN: slab-out-of-bounds in usb_endpoint_is_bulk_out include/uapi/linux/usb/ch9.h:586 [inline] BUG: KASAN: slab-out-of-bounds in prism2sta_probe_usb+0x26c/0x810 drivers/staging/wlan-ng/prism2usb.c:80 Read of size 1 at addr ffff8881c9a1a7a3 by task kworker/1:1/12277 CPU: 1 PID: 12277 Comm: kworker/1:1 Not tainted 5.8.0-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:77 [inline] dump_stack+0xf6/0x16e lib/dump_stack.c:118 print_address_description.constprop.0+0x1a/0x210 mm/kasan/report.c:383 __kasan_report mm/kasan/report.c:513 [inline] kasan_report.cold+0x37/0x7c mm/kasan/report.c:530 usb_endpoint_xfer_bulk include/uapi/linux/usb/ch9.h:518 [inline] usb_endpoint_is_bulk_out include/uapi/linux/usb/ch9.h:586 [inline] prism2sta_probe_usb+0x26c/0x810 drivers/staging/wlan-ng/prism2usb.c:80 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:374 really_probe+0x291/0xde0 drivers/base/dd.c:553 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:738 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:844 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:912 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xb51/0x1c70 drivers/base/core.c:2930 usb_set_configuration+0xf05/0x18a0 drivers/usb/core/message.c:2032 usb_generic_driver_probe+0xba/0xf2 drivers/usb/core/generic.c:239 usb_probe_device+0xd9/0x250 drivers/usb/core/driver.c:272 really_probe+0x291/0xde0 drivers/base/dd.c:553 driver_probe_device+0x26b/0x3d0 drivers/base/dd.c:738 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:844 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:431 __device_attach+0x228/0x4a0 drivers/base/dd.c:912 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0xb51/0x1c70 drivers/base/core.c:2930 usb_new_device.cold+0x71d/0xfd4 drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x2361/0x4390 drivers/usb/core/hub.c:5576 process_one_work+0x94c/0x15f0 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2417 kthread+0x392/0x470 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Allocated by task 12277: save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:494 kmalloc include/linux/slab.h:560 [inline] kzalloc include/linux/slab.h:669 [inline] usb_parse_interface drivers/usb/core/config.c:571 [inline] usb_parse_configuration drivers/usb/core/config.c:795 [inline] usb_get_configuration+0x13d7/0x3a50 drivers/usb/core/config.c:944 usb_enumerate_device drivers/usb/core/hub.c:2387 [inline] usb_new_device+0x42c/0x7a0 drivers/usb/core/hub.c:2523 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x2361/0x4390 drivers/usb/core/hub.c:5576 process_one_work+0x94c/0x15f0 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x82b/0x1120 kernel/workqueue.c:2417 kthread+0x392/0x470 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Freed by task 4625: save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] kasan_set_free_info mm/kasan/common.c:316 [inline] __kasan_slab_free+0x116/0x160 mm/kasan/common.c:455 slab_free_hook mm/slub.c:1474 [inline] slab_free_freelist_hook+0x53/0x140 mm/slub.c:1507 slab_free mm/slub.c:3072 [inline] kfree+0xbc/0x2c0 mm/slub.c:4052 urb_destroy drivers/usb/core/urb.c:26 [inline] kref_put include/linux/kref.h:65 [inline] usb_free_urb+0xb9/0x110 drivers/usb/core/urb.c:96 usb_start_wait_urb+0x1e1/0x4c0 drivers/usb/core/message.c:80 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 get_port_status drivers/usb/core/hub.c:573 [inline] hub_ext_port_status+0x112/0x450 drivers/usb/core/hub.c:590 hub_port_status drivers/usb/core/hub.c:612 [inline] hub_port_debounce+0x1d6/0x3b0 drivers/usb/core/hub.c:4409 hub_port_debounce_be_stable drivers/usb/core/hub.h:164 [inline] hub_port_connect drivers/usb/core/hub.c:5071 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x2cca/0x4390 drivers/usb/core/hub.c:5576 process_one_work+0x94c/0x15f0 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x392/0x470 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 The buggy address belongs to the object at ffff8881c9a1a700 which belongs to the cache kmalloc-192 of size 192 The buggy address is located 163 bytes inside of 192-byte region [ffff8881c9a1a700, ffff8881c9a1a7c0) The buggy address belongs to the page: page:ffffea0007268680 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 flags: 0x200000000000200(slab) raw: 0200000000000200 ffffea0007226500 0000000200000002 ffff8881da002a00 raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881c9a1a680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ffff8881c9a1a700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff8881c9a1a780: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff8881c9a1a800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c9a1a880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ==================================================================