From: Keith Busch <keith.busch@intel.com>
To: Ming Lei <tom.leiming@gmail.com>
Cc: Sasha Levin <sasha.levin@oracle.com>,
Jens Axboe <axboe@kernel.dk>,
Christoph Hellwig <hch@infradead.org>,
jonathan.derrick@intel.com, LKML <linux-kernel@vger.kernel.org>,
linux-block@vger.kernel.org
Subject: Re: blk: accessing invalid memory with "blk-mq: dynamic h/w context count"
Date: Fri, 12 Feb 2016 18:50:10 +0000 [thread overview]
Message-ID: <20160212185010.GA28832@localhost.localdomain> (raw)
In-Reply-To: <20160212162435.1e809790@tom-T450>
On Fri, Feb 12, 2016 at 04:24:35PM +0800, Ming Lei wrote:
> On Fri, 12 Feb 2016 00:41:28 -0500
> Hi Sasha,
>
> It should be about timing of setting q->mq_ops, and
> I believe the following patch may fix the issue, could
> you give a test?
Thanks, Ming, that looks better and looks like the same as the 0-day
failure from when this was posted a couple months ago. I thought this
was potentially risky looking, but haven't had time to make changes.
I also didn't see that this was applied yet either. I've a broken filter
moving important emails to the junk... On the plus side, the exposure
led to a potential fix.
prev parent reply other threads:[~2016-02-12 18:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-12 5:41 blk: accessing invalid memory with "blk-mq: dynamic h/w context count" Sasha Levin
2016-02-12 8:24 ` Ming Lei
2016-02-12 18:50 ` Keith Busch [this message]
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