linux-kernel - Re: KASAN: stack-out-of-bounds Read in iov_iter

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Date:   Sun, 2 May 2021 21:27:54 +0530
From:   Palash Oswal <oswalpalash@...il.com>
To:     Pavel Begunkov <asml.silence@...il.com>
Cc:     Jens Axboe <axboe@...nel.dk>, io-uring@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: KASAN: stack-out-of-bounds Read in iov_iter_revert

On Sun, May 2, 2021 at 9:25 PM Pavel Begunkov <asml.silence@...il.com> wrote:
>
> On 5/2/21 4:13 PM, Palash Oswal wrote:
> > On Sun, May 2, 2021 at 4:07 PM Pavel Begunkov <asml.silence@...il.com> wrote:
> >> May be related to
> >> http://mail.spinics.net/lists/io-uring/msg07874.html
> >>
> >> Was it raw bdev I/O, or a normal filesystem?
> >
> > Normal filesystem.
>
> To avoid delays when I get to it, can you tell what fs it was?
> Just it case it is an fs specific deviation
>
> --
> Pavel Begunkov

root@...kaller:~# mount
/dev/sda on / type ext4 (rw,relatime)

I used https://github.com/google/syzkaller/blob/master/tools/create-image.sh
to build the qemu image.