From: Jens Axboe <axboe@fb.com>
To: Mike Krinkin <krinkin.m.u@gmail.com>
Cc: <avanzini@google.com>, <paolo.valente@unimore.it>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] null_blk: fix use-after-free error
Date: Tue, 22 Dec 2015 10:43:08 -0700 [thread overview]
Message-ID: <56798BAC.5010208@fb.com> (raw)
In-Reply-To: <1450173400-18287-1-git-send-email-krinkin.m.u@gmail.com>
On 12/15/2015 02:56 AM, Mike Krinkin wrote:
> blk_end_request_all may free request, so we need to save
> request_queue pointer before blk_end_request_all call.
>
> The problem was introduced in commit cf8ecc5a8455266f8d51
> ("null_blk: guarantee device restart in all irq modes")
> and causes general protection fault with slab poisoning
> enabled.
>
> Fixes: cf8ecc5a8455266f8d51 ("null_blk: guarantee device
> restart in all irq modes")
Added for 4.4, thanks.
--
Jens Axboe
prev parent reply other threads:[~2015-12-22 17:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-15 9:56 [PATCH] null_blk: fix use-after-free error Mike Krinkin
2015-12-22 2:11 ` Ming Lei
2015-12-22 17:43 ` Jens Axboe [this message]
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