usb 1-1: config 0 has no interface number 0 usb 1-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=74.f9 usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 usb 1-1: config 0 descriptor?? ================================================================== BUG: KASAN: use-after-free in ds_probe+0x604/0x760 drivers/w1/masters/ds2490.c:1019 Read of size 1 at addr ffff88809d1fc202 by task kworker/1:1/21 CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.1.0-rc4-319354-g9a33b36 #3 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+0xe8/0x16e lib/dump_stack.c:113 print_address_description+0x6c/0x236 mm/kasan/report.c:187 kasan_report.cold+0x1a/0x3c mm/kasan/report.c:317 ds_probe+0x604/0x760 drivers/w1/masters/ds2490.c:1019 usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361 really_probe+0x2da/0xb10 drivers/base/dd.c:509 driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 __device_attach+0x223/0x3a0 drivers/base/dd.c:844 bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 device_add+0xad2/0x16e0 drivers/base/core.c:2106 usb_set_configuration+0xdf7/0x1740 drivers/usb/core/message.c:2021 generic_probe+0xa2/0xda drivers/usb/core/generic.c:210 usb_probe_device+0xc0/0x150 drivers/usb/core/driver.c:266 really_probe+0x2da/0xb10 drivers/base/dd.c:509 driver_probe_device+0x21d/0x350 drivers/base/dd.c:671 __device_attach_driver+0x1d8/0x290 drivers/base/dd.c:778 bus_for_each_drv+0x163/0x1e0 drivers/base/bus.c:454 __device_attach+0x223/0x3a0 drivers/base/dd.c:844 bus_probe_device+0x1f1/0x2a0 drivers/base/bus.c:514 device_add+0xad2/0x16e0 drivers/base/core.c:2106 usb_new_device.cold+0x537/0xccf 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+0x138e/0x3b00 drivers/usb/core/hub.c:5432 process_one_work+0x90f/0x1580 kernel/workqueue.c:2269 worker_thread+0x9b/0xe20 kernel/workqueue.c:2415 kthread+0x313/0x420 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Allocated by task 5440: 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+0xb7/0x200 lib/kobject.c:171 kobject_uevent_env+0x23f/0x13d0 lib/kobject_uevent.c:521 udc_bind_to_driver+0x33e/0x5e0 drivers/usb/gadget/udc/core.c:1357 usb_gadget_probe_driver+0x23f/0x380 drivers/usb/gadget/udc/core.c:1408 fuzzer_ioctl_run drivers/usb/gadget/fuzzer/fuzzer.c:699 [inline] fuzzer_ioctl+0x155e/0x1d40 drivers/usb/gadget/fuzzer/fuzzer.c:1111 full_proxy_unlocked_ioctl+0x11b/0x180 fs/debugfs/file.c:205 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xced/0x12f0 fs/ioctl.c:696 ksys_ioctl+0xa0/0xc0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x74/0xb0 fs/ioctl.c:718 do_syscall_64+0xcf/0x4f0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 5440: 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+0x5e/0x140 mm/slub.c:1456 slab_free mm/slub.c:3003 [inline] kfree+0xce/0x290 mm/slub.c:3958 kobject_uevent_env+0x287/0x13d0 lib/kobject_uevent.c:621 udc_bind_to_driver+0x33e/0x5e0 drivers/usb/gadget/udc/core.c:1357 usb_gadget_probe_driver+0x23f/0x380 drivers/usb/gadget/udc/core.c:1408 fuzzer_ioctl_run drivers/usb/gadget/fuzzer/fuzzer.c:699 [inline] fuzzer_ioctl+0x155e/0x1d40 drivers/usb/gadget/fuzzer/fuzzer.c:1111 full_proxy_unlocked_ioctl+0x11b/0x180 fs/debugfs/file.c:205 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xced/0x12f0 fs/ioctl.c:696 ksys_ioctl+0xa0/0xc0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x74/0xb0 fs/ioctl.c:718 do_syscall_64+0xcf/0x4f0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff88809d1fc1e0 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 34 bytes inside of 64-byte region [ffff88809d1fc1e0, ffff88809d1fc220) The buggy address belongs to the page: page:ffffea0002747f00 count:1 mapcount:0 mapping:ffff88812c3f5600 index:0x0 flags: 0xfff00000000200(slab) raw: 00fff00000000200 ffffea0002811240 0000000300000003 ffff88812c3f5600 raw: 0000000000000000 00000000802a002a 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809d1fc100: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc ffff88809d1fc180: 00 00 00 00 00 00 fc fc fc fc fc fc fb fb fb fb >ffff88809d1fc200: fb fb fb fb fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff88809d1fc280: fc fc fc fc 00 00 00 00 00 00 fc fc fc fc fc fc ffff88809d1fc300: 00 00 00 00 00 00 fc fc fc fc fc fc fb fb fb fb ==================================================================