linux-kernel - Re: Re: memory leak in hub

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Message-ID: <CAAeHK+z0Lb_5zw-fQF6AXLzL=+P6kizOJ7yu=t4SP_5UPK66kg@mail.gmail.com>
Date:   Mon, 23 Nov 2020 19:29:10 +0100
From:   Andrey Konovalov <andreyknvl@...gle.com>
To:     Alan Stern <stern@...land.harvard.edu>,
        syzbot <syzbot+44e64397bd81d5e84cba@...kaller.appspotmail.com>
Cc:     Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        LKML <linux-kernel@...r.kernel.org>,
        USB list <linux-usb@...r.kernel.org>,
        syzkaller-bugs <syzkaller-bugs@...glegroups.com>
Subject: Re: Re: memory leak in hub_event

On Fri, Nov 20, 2020 at 6:00 PM Alan Stern <stern@...land.harvard.edu> wrote:
>
> On Fri, Nov 20, 2020 at 08:56:11AM -0800, syzbot wrote:
> > > On Fri, Nov 20, 2020 at 07:15:20AM -0800, syzbot wrote:
> > >> Hello,
> > >>
> > >> syzbot found the following issue on:
> > >>
> > >> HEAD commit:    4d02da97 Merge tag 'net-5.10-rc5' of git://git.kernel.org/..
> > >> git tree:       upstream
> > >> console output: https://syzkaller.appspot.com/x/log.txt?x=13a7d2b6500000
> > >> kernel config:  https://syzkaller.appspot.com/x/.config?x=c5353ac514ca5a43
> > >> dashboard link: https://syzkaller.appspot.com/bug?extid=44e64397bd81d5e84cba
> > >> compiler:       gcc (GCC) 10.1.0-syz 20200507
> > >> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14925089500000
> > >> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16810051500000
>
> > > #syz test: upstream 4d02da97
> >
> > "upstream" does not look like a valid git repo address.
>
> Okay, Andrey.  If "upstream" is not accepted as a valid git repo
> address, why does syzkaller list it on the "git tree:" line?  It seems
> to me that syzkaller should be willing to accept as input anything it
> produces as output.
>
> And what repo should I put here?

Hi Alan,

Yeah, this is confusing, sorry. I've filed
https://github.com/google/syzkaller/issues/2265 for this.

Here "upstream" stands for the mainline tree, so something like this
should work:

#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
4d02da97

Thanks!

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