linux-kernel - memory corruption after "Fix race when checking i

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Message-ID: <20140208204522.GG8801@fieldses.org>
Date:	Sat, 8 Feb 2014 15:45:22 -0500
From:	"J. Bruce Fields" <bfields@...ldses.org>
To:	Steven Whitehouse <swhiteho@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	linux-nfs@...r.kernel.org
Subject: memory corruption after "Fix race when checking i_size on direct i/o
 read"

I'm getting warnings about corruption of the kmalloc-32 slab on an nfs
server while running some regression tests.

A bisect lands on 9fe55eea7e4b444bafc42fa0000cc2d1d2847275 "Fix race
when checking i_size on direct i/o read".  Is there any known problem
here?

It doesn't reproduce immediately and it's possible I could have made a
mistake on the bisect.

I'll verify and try to narrow down the reproducer.

--b.
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