usb 3-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=92.f9 usb 3-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 3-1: config 0 descriptor?? ================================================================== BUG: KASAN: use-after-free in ds_probe+0x5ff/0x750 drivers/w1/masters/ds2490.c:1019 Read of size 1 at addr ffff8881caea9682 by task kworker/0:1/12 CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.1.0-rc3+ #8 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+0xca/0x13e lib/dump_stack.c:113 print_address_description+0x67/0x231 mm/kasan/report.c:187 kasan_report.cold+0x1a/0x35 mm/kasan/report.c:317 ds_probe+0x5ff/0x750 drivers/w1/masters/ds2490.c:1019 usb_probe_interface+0x30d/0x7b0 drivers/usb/core/driver.c:361 really_probe+0x296/0x680 drivers/base/dd.c:509 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454 __device_attach+0x21e/0x360 drivers/base/dd.c:844 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514 device_add+0xaf4/0x1700 drivers/base/core.c:2106 usb_set_configuration+0xdf2/0x1670 drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 drivers/usb/core/generic.c:210 usb_probe_device+0xa8/0x110 drivers/usb/core/driver.c:266 really_probe+0x296/0x680 drivers/base/dd.c:509 driver_probe_device+0xf9/0x200 drivers/base/dd.c:671 __device_attach_driver+0x1c4/0x230 drivers/base/dd.c:778 bus_for_each_drv+0x15e/0x1e0 drivers/base/bus.c:454 __device_attach+0x21e/0x360 drivers/base/dd.c:844 bus_probe_device+0x1ec/0x2a0 drivers/base/bus.c:514 device_add+0xaf4/0x1700 drivers/base/core.c:2106 usb_new_device.cold+0x8b8/0x1030 drivers/usb/core/hub.c:2534 hub_port_connect drivers/usb/core/hub.c:5089 [inline] hub_port_connect_change drivers/usb/core/hub.c:5204 [inline] port_event drivers/usb/core/hub.c:5350 [inline] hub_event+0x1ac9/0x35a0 drivers/usb/core/hub.c:5432 process_one_work+0x90a/0x1580 kernel/workqueue.c:2269 worker_thread+0x96/0xe20 kernel/workqueue.c:2415 kthread+0x30e/0x420 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Allocated by task 6333: set_track mm/kasan/common.c:87 [inline] __kasan_kmalloc mm/kasan/common.c:497 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:470 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:742 [inline] kobject_get_path+0xb9/0x190 lib/kobject.c:171 kobject_uevent_env+0x237/0x1110 lib/kobject_uevent.c:521 usb_gadget_remove_driver+0x7a/0x228 drivers/usb/gadget/udc/core.c:1286 usb_gadget_unregister_driver.cold+0xd/0xaa drivers/usb/gadget/udc/core.c:1425 fuzzer_release+0x155/0x1d0 drivers/usb/gadget/fuzzer/fuzzer.c:599 full_proxy_release+0x117/0x2e0 fs/debugfs/file.c:239 __fput+0x2d2/0x7d0 fs/file_table.c:278 task_work_run+0x144/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x8cb/0x2d10 kernel/exit.c:876 do_group_exit+0x125/0x350 kernel/exit.c:980 get_signal+0x39e/0x1cb0 kernel/signal.c:2577 do_signal+0x88/0x14c0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x195/0x1f0 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x3ed/0x500 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 6333: set_track mm/kasan/common.c:87 [inline] __kasan_slab_free+0x130/0x180 mm/kasan/common.c:459 slab_free_hook mm/slub.c:1429 [inline] slab_free_freelist_hook mm/slub.c:1456 [inline] slab_free mm/slub.c:3003 [inline] kfree+0xd7/0x290 mm/slub.c:3958 kobject_uevent_env+0x27a/0x1110 lib/kobject_uevent.c:621 usb_gadget_remove_driver+0x7a/0x228 drivers/usb/gadget/udc/core.c:1286 usb_gadget_unregister_driver.cold+0xd/0xaa drivers/usb/gadget/udc/core.c:1425 fuzzer_release+0x155/0x1d0 drivers/usb/gadget/fuzzer/fuzzer.c:599 full_proxy_release+0x117/0x2e0 fs/debugfs/file.c:239 __fput+0x2d2/0x7d0 fs/file_table.c:278 task_work_run+0x144/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x8cb/0x2d10 kernel/exit.c:876 do_group_exit+0x125/0x350 kernel/exit.c:980 get_signal+0x39e/0x1cb0 kernel/signal.c:2577 do_signal+0x88/0x14c0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x195/0x1f0 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x3ed/0x500 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8881caea9660 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 34 bytes inside of 64-byte region [ffff8881caea9660, ffff8881caea96a0) The buggy address belongs to the page: page:ffffea00072baa40 count:1 mapcount:0 mapping:ffff8881dac03600 index:0x0 flags: 0x200000000000200(slab) raw: 0200000000000200 ffffea00071444c0 0000000a0000000a ffff8881dac03600 raw: 0000000000000000 00000000802a002a 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881caea9580: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc ffff8881caea9600: 00 00 00 00 00 00 fc fc fc fc fc fc fb fb fb fb >ffff8881caea9680: fb fb fb fb fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff8881caea9700: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc ffff8881caea9780: fb fb fb fb fb fb fb fb fc fc fc fc 00 00 00 00 ==================================================================