snd_usb_toneport 5-1:0.0: set_interface failed
snd_usb_toneport: probe of 2-1:0.0 failed with error -71
snd_usb_toneport 5-1:0.0: Line 6 POD Studio UX2 now disconnected
==================================================================
usb 2-1: USB disconnect, device number 9
BUG: KASAN: use-after-free in __list_del_entry_valid+0xe0/0xef lib/list_debug.c:51
Read of size 8 at addr ffff8880949209a8 by task kworker/0:4/5658

CPU: 0 PID: 5658 Comm: kworker/0:4 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
 __list_del_entry_valid+0xe0/0xef lib/list_debug.c:51
 __list_del_entry include/linux/list.h:117 [inline]
 list_del include/linux/list.h:125 [inline]
 snd_info_free_entry+0x137/0x340 sound/core/info.c:795
 snd_info_card_free+0x43/0x90 sound/core/info.c:606
 snd_card_do_free sound/core/init.c:469 [inline]
 release_card_device+0x8b/0x100 sound/core/init.c:156
 device_release+0x7d/0x210 drivers/base/core.c:1064
 kobject_cleanup lib/kobject.c:662 [inline]
 kobject_release lib/kobject.c:691 [inline]
 kref_put include/linux/kref.h:67 [inline]
 kobject_put+0x1df/0x4f0 lib/kobject.c:708
 put_device+0x21/0x30 drivers/base/core.c:2205
 snd_card_free_when_closed+0x3a/0x50 sound/core/init.c:493
 line6_disconnect.cold+0xa3/0xbc sound/usb/line6/driver.c:833
 line6_probe+0xb23/0x1150 sound/usb/line6/driver.c:799
 usb_probe_interface+0x31d/0x820 drivers/usb/core/driver.c:361
 really_probe+0x2da/0xb10 drivers/base/dd.c:509
 driver_probe_device+0x21d/