IPVS: ftp: loaded support on port[0] = 21
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2483 Comm: syz-executor0 Not tainted 4.19.0-rc2+ #130
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:usb_find_alt_setting+0x38/0x310 drivers/usb/core/usb.c:231
Code: 89 fb 48 83 ec 18 48 89 7d c0 89 55 d4 89 75 d0 e8 ad c2 7e fc 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 84 02 00 00
RSP: 0018:ffff8801937f7608 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90001e50000
RDX: 0000000000000000 RSI: ffffffff85000c93 RDI: 0000000000000004
RBP: ffff8801937f7648 R08: ffff880192cde500 R09: ffffed00326feedf
R10: ffffed00326feee1 R11: ffff8801937f770f R12: 0000000000000000
R13: ffff8801ce6bea40 R14: ffff8801c8b08a80 R15: 0000000000000300
FS:  0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:00000000f5fcab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00007ffe37f65780 CR3: 00000001c08a9000 CR4: 00000000001406e0
Call Trace:
 check_ctrlrecip+0x1e6/0x320 drivers/usb/core/devio.c:828
 proc_control+0x151/0xef0 drivers/usb/core/devio.c:1074
 usbdev_do_ioctl+0x1eb8/0x3b50 drivers/usb/core/devio.c:2394
 usbdev_compat_ioctl+0x24/0x30 drivers/usb/core/devio.c:2562
 __do_compat_sys_ioctl fs/compat_ioctl.c:1419 [inline]
 __se_compat_sys_ioctl fs/compat_ioctl.c:1365 [inline]
 __ia32_compat_sys_ioctl+0x20e/0x630 fs/compat_ioctl.c:1365
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fceca9
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 0c 24 c3 8b 1c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f5fca0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000c0185500
RDX: 0000000020000080 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
IPVS: ftp: loaded support on port[0] = 21
kobject: 'kvm' (00000000e81f3462): kobject_uevent_env
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
---[ end trace 8601fdd9db156680 ]---
RIP: 0010:usb_find_alt_setting+0x38/0x310 drivers/usb/core/usb.c:231
Code: 89 fb 48 83 ec 18 48 89 7d c0 89 55 d4 89 75 d0 e8 ad c2 7e fc 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 84 02 00 00
IPVS: ftp: loaded support on port[0] = 21
RSP: 0018:ffff8801937f7608 EFLAGS: 00010247
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90001e50000
kobject: 'kvm' (00000000e81f3462): fill_kobj_path: path = '/devices/virtual/misc/kvm'
RDX: 0000000000000000 RSI: ffffffff85000c93 RDI: 0000000000000004
RBP: ffff8801937f7648 R08: ffff880192cde500 R09: ffffed00326feedf
R10: ffffed00326feee1 R11: ffff8801937f770f R12: 0000000000000000
R13: ffff8801ce6bea40 R14: ffff8801c8b08a80 R15: 0000000000000300
FS:  0000000000000000(0000) GS:ffff8801daf00000(0063) knlGS:00000000f5fcab40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 0000000032e33000 CR3: 00000001c08a9000 CR4: 00000000001426e0
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready