input input186: cannot allocate more than FF_MAX_EFFECTS effects
vhci_hcd: invalid port number 0
vhci_hcd: invalid port number 76
vhci_hcd: invalid port number 76
==================================================================
BUG: KASAN: use-after-free in vhci_hub_control+0x1b6d/0x1be0 drivers/usb/usbip/vhci_hcd.c:441
Read of size 4 at addr ffff8801cda344bc by task syz-executor0/14031

CPU: 0 PID: 14031 Comm: syz-executor0 Not tainted 4.19.0-rc7-next-20181010+ #91
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x244/0x3ab lib/dump_stack.c:113
 print_address_description.cold.7+0x9/0x1ff mm/kasan/report.c:256
 kasan_report_error mm/kasan/report.c:354 [inline]
 kasan_report.cold.8+0x242/0x309 mm/kasan/report.c:412
 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432
 vhci_hub_control+0x1b6d/0x1be0 drivers/usb/usbip/vhci_hcd.c:441
 rh_call_control drivers/usb/core/hcd.c:679 [inline]
 rh_urb_enqueue drivers/usb/core/hcd.c:838 [inline]
 usb_hcd_submit_urb+0x17bb/0x20a0 drivers/usb/core/hcd.c:1651
 usb_submit_urb+0x893/0x14e0 drivers/usb/core/urb.c:570
 usb_start_wait_urb+0x13d/0x370 drivers/usb/core/message.c:57
 usb_internal_control_msg drivers/usb/core/message.c:101 [inline]
 usb_control_msg+0x332/0x4e0 drivers/usb/core/message.c:152
 proc_control+0x9ae/0xf00 drivers/usb/core/devio.c:1106
 usbdev_do_ioctl+0x1eb8/0x3b50 drivers/usb/core/devio.c:2412
 usbdev_ioctl+0x25/0x30 drivers/usb/core/devio.c:2569
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:501 [inline]
 do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702
 __do_sys_ioctl fs/ioctl.c:709 [inline]
 __se_sys_ioctl fs/ioctl.c:707 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x457519
Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f71a5f2fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457519
RDX: 0000000020000000 RSI: 00000000c0185500 RDI: 0000000000000004
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f71a5f306d4
R13: 00000000004bf65f R14: 00000000004cf538 R15: 00000000ffffffff

The buggy address belongs to the page:
page:ffffea0007368d00 count:0 mapcount:-128 mapping:0000000000000000 index:0xffff8801cda340c0
flags: 0x2fffc0000000000()
raw: 02fffc0000000000 ffffea0006eb6188 ffffea0007185a08 0000000000000000
raw: ffff8801cda340c0 0000000000000001 00000000ffffff7f 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8801cda34380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8801cda34400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff8801cda34480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                        ^
 ffff8801cda34500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff8801cda34580: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================