WARNING in usb_submit_urb (3)

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit:    9dcd936c5312 Merge tag 'for-4.19/dm-fixes-4' of git://git...
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=123b8da1400000
kernel config:  https://syzkaller.appspot.com/x/.config?x=88e9a8a39dc0be2d
dashboard link: https://syzkaller.appspot.com/bug?extid=24a30223a4b609bb802e
compiler:       gcc (GCC) 8.0.1 20180413 (experimental)
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13888991400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1476e5e6400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+24a30223a4b609bb802e@xxxxxxxxxxxxxxxxxxxxxxxxx

IPVS: ftp: loaded support on port[0] = 21
------------[ cut here ]------------
usb usb7: BOGUS urb flags, 1 --> 0
WARNING: CPU: 0 PID: 5828 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: 5828 Comm: syz-executor149 Not tainted 4.19.0-rc7+ #278
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+0x1c4/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 __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+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
RIP: 0010:usb_submit_urb+0x717/0x14e0 drivers/usb/core/urb.c:502
Code: 83 fc 48 8b 45 d0 48 8d b8 a0 00 00 00 e8 d1 be 44 ff 45 89 e0 44 89  
e9 4c 89 fa 48 89 c6 48 c7 c7 00 72 71 88 e8 09 b3 4d fc <0f> 0b e8 12 e0  
83 fc 48 c7 c6 00 73 71 88 4c 89 f7 e8 53 e1 83 fc
RSP: 0018:ffff8801bb42f268 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8801d754d300 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff81650405 RDI: 0000000000000005
RBP: ffff8801bb42f2d8 R08: ffff8801d8fa6200 R09: fffffbfff12720fc
R10: fffffbfff12720fc R11: ffffffff893907e3 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff8801cdc41bc0
 proc_do_submiturb+0x1b7d/0x4020 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: 0033:0x444769
Code: 25 02 00 85 c0 b8 00 00 00 00 48 0f 44 c3 5b c3 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 2b d7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00000000007eff78 EFLAGS: 00000213 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffc1a2515c0 RCX: 0000000000444769
RDX: 0000000020000080 RSI: 00000000802c550a RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000120080522 R09: 0000000120080522
R10: 000000000000000f R11: 0000000000000213 R12: 0000000000402320
R13: 00000000004023b0 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..


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