From: Greg KH <gregkh@linuxfoundation.org>
To: Giuliano Procida <gprocida@google.com>
Cc: stable@vger.kernel.org
Subject: Re: backport request for use-after-free blk_mq_queue_tag_busy_iter
Date: Wed, 1 Apr 2020 19:55:37 +0200 [thread overview]
Message-ID: <20200401175537.GC2586614@kroah.com> (raw)
In-Reply-To: <CAGvU0HkVUE_mQY8AUjieRcRrD38gdJRE+CbDuenMxnU6DAFOSA@mail.gmail.com>
On Wed, Apr 01, 2020 at 05:47:02PM +0000, Giuliano Procida wrote:
> This issue was found in 4.14 and is present in earlier kernels.
>
> Please backport
>
> f5bbbbe4d635 blk-mq: sync the update nr_hw_queues with
> blk_mq_queue_tag_busy_iter
> 530ca2c9bd69 blk-mq: Allow blocking queue tag iter callbacks
>
> onto the stable branches that don't have these. The second is a fix
> for the first. Thank you.
>
> 4.19.y and later - commits already present
> 4.14.y - f5bbbbe4d635 doesn't patch cleanly but it's still
> straightforward, just drop the comment and code mentioning switching
> to 'none' in the trailing context
> 4.9.y - ditto
> 4.4.y - there was a refactoring of the code in commit
> 0bf6cd5b9531bcc29c0a5e504b6ce2984c6fd8d8 making this non-trivial
> 3.16.y - ditto
>
> I am happy to try to produce clean patches, but it may be a day or so.
Clean patches would be good, as there are -rcs out right now so I can't
do anything until they are released in a few days.
thanks,
greg k-h
next prev parent reply other threads:[~2020-04-01 17:55 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-01 17:47 backport request for use-after-free blk_mq_queue_tag_busy_iter Giuliano Procida
2020-04-01 17:55 ` Greg KH [this message]
2020-04-03 9:20 ` Greg KH
2020-04-03 22:30 ` Giuliano Procida
2020-04-07 16:31 ` Giuliano Procida
2020-04-07 16:55 ` [PATCH 0/4] " Giuliano Procida
2020-04-10 9:04 ` Greg KH
2020-04-07 16:55 ` [PATCH 1/4] block: more locking around delayed work Giuliano Procida
2020-04-10 9:03 ` Greg KH
2020-04-15 12:03 ` Giuliano Procida
2020-04-07 16:55 ` [PATCH 2/4] blk-mq: Allow timeouts to run while queue is freezing Giuliano Procida
2020-04-07 16:55 ` Giuliano Procida
2020-04-07 16:55 ` [PATCH 3/4] blk-mq: sync things with blk_mq_queue_tag_busy_iter Giuliano Procida
2020-04-07 16:55 ` [PATCH 4/4] blk-mq: Allow blocking queue tag iter callbacks Giuliano Procida
2020-04-07 21:02 ` backport request for use-after-free blk_mq_queue_tag_busy_iter Giuliano Procida
2020-04-15 13:00 ` [PATCH v2 0/4] " Giuliano Procida
2020-05-18 7:27 ` Greg KH
2020-04-15 13:00 ` [PATCH v2 1/4] block: more locking around delayed work Giuliano Procida
2020-04-15 13:00 ` [PATCH v2 2/4] blk-mq: Allow timeouts to run while queue is freezing Giuliano Procida
2020-04-15 13:00 ` Giuliano Procida
2020-04-15 13:00 ` [PATCH v2 3/4] blk-mq: sync the update nr_hw_queues with blk_mq_queue_tag_busy_iter Giuliano Procida
2020-04-15 13:00 ` [PATCH v2 4/4] blk-mq: Allow blocking queue tag iter callbacks Giuliano Procida
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