From: Russell King - ARM Linux admin <linux@armlinux.org.uk>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: syzbot <syzbot+0b06ef9b44d00d600183@syzkaller.appspotmail.com>,
Arnd Bergmann <arnd@arndb.de>,
Linus Walleij <linus.walleij@linaro.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>,
syzkaller-bugs <syzkaller-bugs@googlegroups.com>
Subject: Re: [syzbot] kernel panic: corrupted stack end in openat
Date: Tue, 16 Mar 2021 09:24:21 +0000 [thread overview]
Message-ID: <20210316092420.GN1463@shell.armlinux.org.uk> (raw)
In-Reply-To: <CACT4Y+Yaq-zDh5FAzHt4g-5jXrXC3rSLw6CM=kjcfR6oxJ1+CA@mail.gmail.com>
On Tue, Mar 16, 2021 at 08:59:17AM +0100, Dmitry Vyukov wrote:
> On Tue, Mar 16, 2021 at 8:18 AM syzbot
> <syzbot+0b06ef9b44d00d600183@syzkaller.appspotmail.com> wrote:
> >
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: 1e28eed1 Linux 5.12-rc3
> > git tree: upstream
> > console output: https://syzkaller.appspot.com/x/log.txt?x=167535e6d00000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=e0cee1f53de33ca3
> > dashboard link: https://syzkaller.appspot.com/bug?extid=0b06ef9b44d00d600183
> > userspace arch: arm
> >
> > Unfortunately, I don't have any reproducer for this issue yet.
> >
> > IMPORTANT: if you fix the issue, please add the following tag to the commit:
> > Reported-by: syzbot+0b06ef9b44d00d600183@syzkaller.appspotmail.com
>
> +arm32 maintainer
> I think this is a real stack overflow on arm32, the stack is indeed deep.
There's no way to know for sure because there's no indication of the
stack pointer in this, so we don't know how much space remains.
Therefore we don't know whether this is something in the dumped
path, or an interrupt causing it.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 40Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2021-03-16 9:24 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-16 7:18 [syzbot] kernel panic: corrupted stack end in openat syzbot
2021-03-16 7:59 ` Dmitry Vyukov
2021-03-16 9:24 ` Russell King - ARM Linux admin [this message]
2021-03-16 9:51 ` Dmitry Vyukov
2021-03-16 10:02 ` Arnd Bergmann
2021-03-16 10:17 ` Dmitry Vyukov
2021-03-16 15:44 ` Arnd Bergmann
2021-03-16 15:51 ` Russell King - ARM Linux admin
2021-03-16 16:03 ` Dmitry Vyukov
2021-03-16 16:03 ` Arnd Bergmann
2021-03-16 16:13 ` Dmitry Vyukov
2021-03-16 16:28 ` Arnd Bergmann
2021-03-17 7:47 ` Dmitry Vyukov
2021-03-17 8:31 ` Arnd Bergmann
2021-03-17 8:50 ` Dmitry Vyukov
2021-03-16 10:37 ` Ard Biesheuvel
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