Re: WARNING in corrupted/usb_submit_urb

[Andrey Konovalov]

On Wed, Jun 17, 2020 at 1:24 PM syzbot
<syzbot+120d387f677320f6a57c@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:    d6ff8147 usb: gadget: add raw-gadget interface
> git tree:       https://github.com/google/kasan.git usb-fuzzer
> console output: https://syzkaller.appspot.com/x/log.txt?x=140052c3e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=90a3d9bed5648419
> dashboard link: https://syzkaller.appspot.com/bug?extid=120d387f677320f6a57c
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=16195fd9e00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1610f2c3e00000
>
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+120d387f677320f6a57c@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> ati_remote 1-1:0.0: Unknown Medion X10 receiver, using default ati_remote Medion keymap
> ------------[ cut here ]------------
> usb 1-1: BOGUS urb xfer, pipe 1 != type 3
> WARNING: CPU: 1 PID: 81 at drivers/usb/core/urb.c:478 usb_submit_urb+0x1188/0x1460 drivers/usb/core/urb.c:478
> Kernel panic - not syncing: panic_on_warn set ...
> CPU: 1 PID: 81 Comm: kworker/1:1 Not tainted 5.6.0-rc3-syzkaller #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
> Workqueue: usb_hub_wq hub_event
> Call Trace:
>  __dump_stack lib/dump_stack.c:77 [inline]
>  dump_stack+0xef/0x16e lib/dump_stack.c:118
>  panic+0x2aa/0x6e1 kernel/panic.c:221
>  __warn.cold+0x2f/0x30 kernel/panic.c:582
>  report_bug+0x27b/0x2f0 lib/bug.c:195
>  fixup_bug arch/x86/kernel/traps.c:174 [inline]
>  fixup_bug arch/x86/kernel/traps.c:169 [inline]
>  do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:267
>  do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
>  invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
> RIP: 0010:usb_submit_urb+0x1188/0x1460 drivers/usb/core/urb.c:478
> Code: 4d 85 ed 74 46 e8 18 ce dd fd 4c 89 f7 e8 d0 5c 17 ff 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 e0 e7 3b 86 e8 a0 5f b2 fd <0f> 0b e9 20 f4 ff ff e8 ec cd dd fd 0f 1f 44 00 00 e8 e2 cd dd fd
> RSP: 0018:ffff8881d8a0f0b8 EFLAGS: 00010282
> RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000000000
>
>
> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxxx
>
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>
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Corrupted report, will be fixed by https://github.com/google/syzkaller/pull/1839