usb 2-1: claimed gadget: Vendor=0424 ProdID=c001 Bus=02 Device=22 usb 2-1: device path: /sys/bus/usb/devices/2-1:2.210 most_core: registered new device mdev0 (2-1:2.210) usb 2-1: USB disconnect, device number 34 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN CPU: 0 PID: 2843 Comm: kworker/0:5 Not tainted 5.2.0-rc6+ #14 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event RIP: 0010:device_del+0x7a/0xb80 drivers/base/core.c:2229 Code: c7 40 04 00 07 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 80 00 00 00 31 c0 e8 d1 9d d5 fe 48 8d 7b 40 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 79 0a 00 00 48 8b 43 40 4c 8d a3 80 00 00 00 31 RSP: 0018:ffff8881ce9677d0 EFLAGS: 00010202 RAX: 0000000000000008 RBX: 0000000000000000 RCX: ffffc9000ebd5000 RDX: 0000000000005107 RSI: ffffffff82673ddf RDI: 0000000000000040 RBP: dffffc0000000000 R08: ffff8881d05e1800 R09: ffffed103a0c9b26 R10: ffffed103a0c9b25 R11: ffff8881d064d92f R12: ffff8881cd4291a8 R13: ffff8881d064d860 R14: ffff8881cd429130 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000006bffd0 CR3: 00000001d31b4000 CR4: 00000000001406f0 Call Trace: device_unregister+0x11/0x30 drivers/base/core.c:2306 hdm_disconnect+0xdf/0x200 drivers/staging/most/usb/usb.c:1208 usb_unbind_interface+0x1bd/0x8a0 drivers/usb/core/driver.c:423 __device_release_driver drivers/base/dd.c:1081 [inline] device_release_driver_internal+0x404/0x4c0 drivers/base/dd.c:1112 bus_remove_device+0x2dc/0x4a0 drivers/base/bus.c:556 device_del+0x460/0xb80 drivers/base/core.c:2274 usb_disable_device+0x211/0x690 drivers/usb/core/message.c:1237 usb_disconnect+0x284/0x830 drivers/usb/core/hub.c:2199 hub_port_connect drivers/usb/core/hub.c:4949 [inline] hub_port_connect_change drivers/usb/core/hub.c:5213 [inline] port_event drivers/usb/core/hub.c:5359 [inline] hub_event+0x143d/0x35f0 drivers/usb/core/hub.c:5441 process_one_work+0x905/0x1570 kernel/workqueue.c:2269 process_scheduled_works kernel/workqueue.c:2331 [inline] worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417 kthread+0x30b/0x410 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace e5f54436bd281bf4 ]--- RIP: 0010:device_del+0x7a/0xb80 drivers/base/core.c:2229 Code: c7 40 04 00 07 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 84 24 80 00 00 00 31 c0 e8 d1 9d d5 fe 48 8d 7b 40 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 79 0a 00 00 48 8b 43 40 4c 8d a3 80 00 00 00 31 RSP: 0018:ffff8881ce9677d0 EFLAGS: 00010202 RAX: 0000000000000008 RBX: 0000000000000000 RCX: ffffc9000ebd5000 RDX: 0000000000005107 RSI: ffffffff82673ddf RDI: 0000000000000040 RBP: dffffc0000000000 R08: ffff8881d05e1800 R09: ffffed103a0c9b26 R10: ffffed103a0c9b25 R11: ffff8881d064d92f R12: ffff8881cd4291a8 R13: ffff8881d064d860 R14: ffff8881cd429130 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881db200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000006bffd0 CR3: 00000001d31b4000 CR4: 00000000001406f0