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Date:	Mon, 26 Oct 2009 13:55:54 +0100
From:	Tejun Heo <>
To:	Jens Axboe <>
CC:	Neil Brown <>,
Subject: Re: [PATCH] use after free bug in __blkdev_get

Jens Axboe wrote:
> On Mon, Oct 26 2009, Neil Brown wrote:
>> commit 0762b8bde9729f10f8e6249809660ff2ec3ad735
>> (from 14 months ago) introduced a use-after-free bug which has just
>> recently started manifesting in my md testing.
>> I tried git bisect to find out what caused the bug to start
>> manifesting, and it could have been the recent change to
>> blk_unregister_queue (48c0d4d4c04) but the results were inconclusive.
>> This patch certainly fixes my symptoms and looks correct as the two
>> calls are now in the same order as elsewhere in that function.
>> Signed-off-by: NeilBrown <>

Oops, thanks for catching it.

Acked-by: Tejun Heo <>

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