usb 1-1: config 0 has no interface number 0 usb 1-1: New USB device found, idVendor=04fa, idProduct=2490, bcdDevice=f5.2f 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 ffff8880a7a6a082 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 701: 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_node include/linux/slab.h:585 [inline] kzalloc_node include/linux/slab.h:753 [inline] __get_vm_area_node+0x12d/0x3b0 mm/vmalloc.c:1394 __vmalloc_node_range+0xea/0x790 mm/vmalloc.c:1766 __vmalloc_node mm/vmalloc.c:1826 [inline] __vmalloc_node_flags mm/vmalloc.c:1840 [inline] vzalloc+0x6c/0x90 mm/vmalloc.c:1885 n_tty_open+0x1b/0x160 drivers/tty/n_tty.c:1914 tty_ldisc_open.isra.0+0x85/0xd0 drivers/tty/tty_ldisc.c:469 tty_ldisc_setup+0x48/0x110 drivers/tty/tty_ldisc.c:778 tty_init_dev drivers/tty/tty_io.c:1361 [inline] tty_init_dev+0x20a/0x450 drivers/tty/tty_io.c:1317 ptmx_open drivers/tty/pty.c:845 [inline] ptmx_open+0x111/0x350 drivers/tty/pty.c:811 chrdev_open+0x220/0x5d0 fs/char_dev.c:417 do_dentry_open+0x49c/0x1130 fs/open.c:777 do_last fs/namei.c:3416 [inline] path_openat+0x147d/0x40b0 fs/namei.c:3533 do_filp_open+0x1a6/0x280 fs/namei.c:3563 do_sys_open+0x3c5/0x590 fs/open.c:1069 do_syscall_64+0xcf/0x4f0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 701: 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 __vunmap+0x335/0x430 mm/vmalloc.c:1543 __vfree+0x41/0xd0 mm/vmalloc.c:1584 vfree+0x5f/0x90 mm/vmalloc.c:1614 n_tty_close+0xbe/0x120 drivers/tty/n_tty.c:1895 tty_ldisc_close.isra.0+0xfc/0x180 drivers/tty/tty_ldisc.c:494 tty_ldisc_kill+0x99/0x160 drivers/tty/tty_ldisc.c:642 tty_ldisc_release+0xc3/0x270 drivers/tty/tty_ldisc.c:814 tty_release_struct+0x1b/0x50 drivers/tty/tty_io.c:1612 tty_release+0xbd8/0x1140 drivers/tty/tty_io.c:1785 __fput+0x2df/0x8c0 fs/file_table.c:278 task_work_run+0x149/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x243/0x270 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x40c/0x4f0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8880a7a6a060 which belongs to the cache kmalloc-64 of size 64 The buggy address is located 34 bytes inside of 64-byte region [ffff8880a7a6a060, ffff8880a7a6a0a0) The buggy address belongs to the page: page:ffffea00029e9a80 count:1 mapcount:0 mapping:ffff88812c3f5600 index:0x0 flags: 0xfff00000000200(slab) raw: 00fff00000000200 ffffea000260bd80 0000000c0000000c ffff88812c3f5600 raw: 0000000000000000 00000000802a002a 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a7a69f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880a7a6a000: 00 00 00 00 00 00 fc fc fc fc fc fc fb fb fb fb >ffff8880a7a6a080: fb fb fb fb fc fc fc fc fb fb fb fb fb fb fb fb ^ ffff8880a7a6a100: fc fc fc fc fb fb fb fb fb fb fb fb fc fc fc fc ffff8880a7a6a180: fb fb fb fb fb fb fb fb fc fc fc fc fb fb fb fb ==================================================================