linux-kernel - Re: [GIT PULL] ext4 changes for 4.2-rc1

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Message-ID: <20150629082703.GB11013@quack.suse.cz>
Date:	Mon, 29 Jun 2015 10:27:03 +0200
From:	Jan Kara <jack@...e.cz>
To:	Theodore Ts'o <tytso@....edu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jan Kara <jack@...e.cz>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>
Subject: Re: [GIT PULL] ext4 changes for 4.2-rc1

On Sat 27-06-15 10:07:43, Ted Tso wrote:
> On Sat, Jun 27, 2015 at 12:02:37AM -0400, Theodore Ts'o wrote:
> > 
> > I would tend to agree.  The weird thing though is that I haven't seen
> > this problem myself, despite running multiple regression tests before
> > I sent the pull request, as well as running it on my laptop and doing
> > kernel compiles with make -j16 and reading e-mail (I'm typing this
> > e-mail on a 4.1 kernel merged with the ext4 patches for this merge
> > window, so I have this commit running in my development laptop, and it
> > hasn't triggered for me).
> 
> Update: I've been able to reproduce the crash using a post merge
> kernel (of course, I had to use CONFIG_SLUB since CONFIG_SLAB is
> busted) a single time.  Unfortunately, I've not been able to reproduce
> it reliably so I can't speak to whether reverting 2143c1965a76 will
> fix things.  But it does seem very likely.

Sure, I agree with the revert Linus did. That's the best we can do now.
I'm now trying to figure out what could have gone wrong.

								Honza

-- 
Jan Kara <jack@...e.cz>
SUSE Labs, CR
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