------------[ cut here ]------------ usb usb7: BOGUS urb flags, 1 --> 0 WARNING: CPU: 0 PID: 3841 at drivers/usb/core/urb.c:503 usb_submit_urb+0x717/0x14e0 drivers/usb/core/urb.c:502 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 3841 Comm: syz-executor2 Not tainted 4.19.0-rc7-next-20181012+ #93 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 panic+0x238/0x4e7 kernel/panic.c:184 kobject: 'loop4' (00000000bc21e95b): kobject_uevent_env kobject: 'loop4' (00000000bc21e95b): fill_kobj_path: path = '/devices/virtual/block/loop4' __warn.cold.8+0x163/0x1ba kernel/panic.c:536 report_bug+0x254/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969 RIP: 0010:usb_submit_urb+0x717/0x14e0 drivers/usb/core/urb.c:502 Code: 7b fc 48 8b 45 d0 48 8d b8 a0 00 00 00 e8 a1 63 44 ff 45 89 e0 44 89 e9 4c 89 fa 48 89 c6 48 c7 c7 a0 f7 71 88 e8 09 87 45 fc <0f> 0b e8 42 f9 7b fc 48 c7 c6 a0 f8 71 88 4c 89 f7 e8 83 fa 7b fc RSP: 0018:ffff880182567268 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffff880187535e00 RCX: ffffc90007a45000 RDX: 000000000000bdda RSI: ffffffff8164bc15 RDI: 0000000000000005 RBP: ffff8801825672d8 R08: ffff8801855465c0 R09: ffffed003b5c5008 R10: ffffed003b5c5008 R11: ffff8801dae28047 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801cdcd17c0 proc_do_submiturb+0x1b78/0x4010 drivers/usb/core/devio.c:1781 proc_submiturb_compat+0x544/0x800 drivers/usb/core/devio.c:2015 usbdev_do_ioctl+0x19a2/0x3b50 drivers/usb/core/devio.c:2492 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: 0033:0x457569 Code: fd b3 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff78e2cac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000020000080 RSI: 00000000802c550a RDI: 0000000000000003 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff78e2cb6d4 R13: 00000000004bf6ac R14: 00000000004cf598 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..