On Fri, 3 Jan 2020, syzbot wrote: > Hello, > > syzbot has tested the proposed patch and the reproducer did not trigger > crash: > > Reported-and-tested-by: > syzbot+10e5f68920f13587ab12@xxxxxxxxxxxxxxxxxxxxxxxxx > > Tested on: > > commit: ecdf2214 usb: gadget: add raw-gadget interface > git tree: https://github.com/google/kasan.git > kernel config: https://syzkaller.appspot.com/x/.config?x=b06a019075333661 > dashboard link: https://syzkaller.appspot.com/bug?extid=10e5f68920f13587ab12 > compiler: gcc (GCC) 9.0.0 20181231 (experimental) > patch: https://syzkaller.appspot.com/x/patch.diff?x=177f06e1e00000 > > Note: testing is done by a robot and is best-effort only. Andrey: Clearly something strange is going on here. First, the patch should not have changed the behavior; all it did was add some log messages. Second, I don't see how the warning could have been triggered at all -- it seems to be complaining that 2 != 2. Does the reproducer really work? Alan Stern