kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 3 PID: 28612 Comm: syz-executor3 Not tainted 4.14.0-rc8-next-20171110+ #12 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff88000c1303c0 task.stack: ffff88002b468000 RIP: 0010:usb_find_alt_setting+0x38/0x310 drivers/usb/core/usb.c:231 RSP: 0018:ffff88002b46f610 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff83bf4473 RDX: 0000000000000000 RSI: ffffc90000892000 RDI: 0000000000000004 RBP: ffff88002b46f650 R08: ffffed000568dee2 R09: ffffed000568dee2 R10: 0000000000000003 R11: ffffed000568dee1 R12: ffff88002a9cc300 R13: 00000000000000fd R14: 00000000000007fd R15: 0000000000000000 FS: 00007f27208b6700(0000) GS:ffff88007fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd6c212f78 CR3: 000000001d124000 CR4: 00000000000006e0 Call Trace: check_ctrlrecip+0xf3/0x290 drivers/usb/core/devio.c:831 proc_control+0x13f/0xe30 drivers/usb/core/devio.c:1078 usbdev_do_ioctl+0x2097/0x3670 drivers/usb/core/devio.c:2396 usbdev_ioctl+0x25/0x30 drivers/usb/core/devio.c:2553 vfs_ioctl fs/ioctl.c:46 [inline] do_vfs_ioctl+0x1b1/0x1530 fs/ioctl.c:686 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:692 entry_SYSCALL_64_fastpath+0x1f/0x96 RIP: 0033:0x447c99 RSP: 002b:00007f27208b5bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f27208b66cc RCX: 0000000000447c99 RDX: 000000002003dffa RSI: 00000000c0185500 RDI: 0000000000000014 RBP: 0000000000000086 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000000086a0 R14: 00000000006ec740 R15: 00007f27208b6700 Code: 89 d5 53 48 89 fb 48 83 ec 18 48 89 7d c8 89 75 d0 e8 2d 3c b0 fd 48 8d 7b 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 a1 02 00 RIP: usb_find_alt_setting+0x38/0x310 drivers/usb/core/usb.c:231 RSP: ffff88002b46f610 ---[ end trace 240b5fa4bba8772f ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..