From: Al Viro <viro@ZenIV.linux.org.uk>
To: Matthew McClintock <mmcclint@codeaurora.org>
Cc: Larry Finger <Larry.Finger@lwfinger.net>,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: Regression in 4.6.0-git - bisected to commit dd254f5a382c
Date: Wed, 25 May 2016 02:10:36 +0100 [thread overview]
Message-ID: <20160525011036.GB14480@ZenIV.linux.org.uk> (raw)
In-Reply-To: <1CDF0CFA-CCD2-440A-B956-2787BD8F2C4F@codeaurora.org>
On Tue, May 24, 2016 at 07:58:13PM -0500, Matthew McClintock wrote:
>
> > On May 24, 2016, at 6:41 PM, Al Viro <viro@ZenIV.linux.org.uk> wrote:
> >
> > Again, I understand what's going on kernel-side; the only tricky part is how
> > to fix it without bringing the nasal daemons back. I think I have a solution
> > and I'm going to post it tonight if it survives the local beating. In any
> > case, the testcase above deserves being added to LTP - it's a real regression.
>
> I’m running a simple busybox rootfs with the following init script:
>
> https://gist.github.com/7b12fdb5d7def9a835291a79c060fa07
>
> And inittab:
>
> https://gist.github.com/5a840b7eaa48f321836125f15147d0e9
>
> Happy to turn on ftrace, dyndbg, and provide more logs.
Slap the WARN_ON(!size); in the very beginning of iov_iter_advance(), see
where it's triggered...
next prev parent reply other threads:[~2016-05-25 1:10 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-23 21:30 Regression in 4.6.0-git - bisected to commit dd254f5a382c Larry Finger
2016-05-24 0:18 ` Al Viro
2016-05-24 2:55 ` Larry Finger
2016-05-24 16:10 ` Larry Finger
2016-05-24 16:28 ` Al Viro
2016-05-24 18:39 ` Larry Finger
2016-05-24 19:13 ` Matthew McClintock
2016-05-24 19:16 ` Larry Finger
2016-05-24 19:25 ` Matthew McClintock
2016-05-24 19:36 ` Larry Finger
2016-05-24 22:31 ` Matthew McClintock
2016-05-24 23:41 ` Al Viro
2016-05-25 0:58 ` Matthew McClintock
2016-05-25 1:10 ` Al Viro [this message]
2016-05-25 1:20 ` Matthew McClintock
2016-05-25 1:28 ` Al Viro
2016-05-25 2:06 ` Matthew McClintock
2016-05-25 3:21 ` Al Viro
2016-05-25 6:24 ` Al Viro
2016-05-25 14:28 ` Larry Finger
2016-05-25 15:27 ` Matthew McClintock
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