From: Jens Axboe <axboe@kernel.dk>
To: "Matias Bjørling" <m@bjorling.me>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
axboe@fb.com
Subject: Re: [PATCH] lightnvm: wrong offset in bad blk lun calculation
Date: Tue, 29 Dec 2015 08:28:54 -0700 [thread overview]
Message-ID: <5682A6B6.1010909@kernel.dk> (raw)
In-Reply-To: <1451396276-2589-2-git-send-email-m@bjorling.me>
On 12/29/2015 06:37 AM, Matias Bjørling wrote:
> dev->nr_luns reports the total number of luns available in a device
> while dev->luns_per_chnl is the number of luns per channel.
>
> When multiple channels are available, the offset is calculated from a
> channel and lun id into a linear array. As it multiplies with
> the total number of luns, we go out of bound when channel id > 0 and
> causes the kernel to panic when we read a protected kernel memory area.
Added for 4.4, thanks.
--
Jens Axboe
prev parent reply other threads:[~2015-12-29 15:29 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-29 13:37 [PATCH] Fix for 4.4-rc7 Matias Bjørling
2015-12-29 13:37 ` [PATCH] lightnvm: wrong offset in bad blk lun calculation Matias Bjørling
2015-12-29 15:28 ` Jens Axboe [this message]
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