usb 5-1: config 2 has no interface number 0 usb 5-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=5a.88 usb 5-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 ================================================================== BUG: KASAN: use-after-free in ds_probe+0x5ff/0x750 drivers/w1/masters/ds2490.c:1019 Read of size 1 at addr ffff8881ca99fb02 by task kworker/1:3/12727 CPU: 1 PID: 12727 Comm: kworker/1:3 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 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417 kthread+0x30e/0x420 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Allocated by task 16804: 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 udc_bind_to_driver+0x401/0x531 drivers/usb/gadget/udc/core.c:1357 usb_gadget_probe_driver.cold+0x10/0xde drivers/usb/gadget/udc/core.c:1408 fuzzer_ioctl_run drivers/usb/gadget/fuzzer/fuzzer.c:718 [inline] fuzzer_ioctl+0x15b9/0x1d90 drivers/usb/gadget/fuzzer/fuzzer.c:1130 full_proxy_unlocked_ioctl+0x116/0x180 fs/debugfs/file.c:205 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xce8/0x12f0 fs/ioctl.c:696 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718 do_syscall_64+0xbd/0x500 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 16804: 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 udc_bind_to_driver+0x401/0x531 drivers/usb/gadget/udc/core.c:1357 usb_gadget_probe_driver.cold+0x10/0xde drivers/usb/gadget/udc/core.c:1408 fuzzer_ioctl_run drivers/usb/gadget/fuzzer/fuzzer.c:718 [inline] fuzzer_ioctl+0x15b9/0x1d90 drivers/usb/gadget/fuzzer/fuzzer.c:1130 full_proxy_unlocked_ioctl+0x116/0x180 fs/debugfs/file.c:205 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xce8/0x12f0 fs/ioctl.c:696 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718 do_syscall_64+0xbd/0x500 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8881ca99fae0 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 34 bytes inside of 64-byte region [ffff8881ca99fae0, ffff8881ca99fb20) The buggy address belongs to the page: page:ffffea00072a67c0 count:1 mapcount:0 mapping:ffff8881dac03600 index:0x0 flags: 0x200000000000200(slab) raw: 0200000000000200 ffffea00072d4840 0000000600000006 ffff8881dac03600 raw: 0000000000000000 00000000002a002a 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881ca99fa00: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc ffff8881ca99fa80: 00 00 00 00 00 00 fc fc fc fc fc fc fb fb fb fb >ffff8881ca99fb00: fb fb fb fb fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff8881ca99fb80: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc ffff8881ca99fc00: fb fb fb fb fb fb fb fb fc fc fc fc fb fb fb fb ==================================================================