From: Greg KH <gregkh@linuxfoundation.org>
To: Li Lingfeng <lilingfeng3@huawei.com>
Cc: stable@vger.kernel.org, mpatocka@redhat.com,
torvalds@linux-foundation.org, tglx@linutronix.de,
linux-kernel@vger.kernel.org, dm-devel@lists.linux.dev,
msnitzer@redhat.com, ignat@cloudflare.com, damien.lemoal@wdc.com,
bob.liu@oracle.com, houtao1@huawei.com, nhuck@google.com,
peterz@infradead.org, mingo@elte.hu, yukuai3@huawei.com,
yangerkun@huawei.com, yi.zhang@huawei.com,
lilingfeng@huaweicloud.com
Subject: Re: [PATCH 6.6] Revert "dm-crypt, dm-verity: disable tasklets"
Date: Thu, 11 Apr 2024 11:52:42 +0200 [thread overview]
Message-ID: <2024041103-reputable-bobsled-585f@gregkh> (raw)
In-Reply-To: <20240411091539.361470-1-lilingfeng3@huawei.com>
On Thu, Apr 11, 2024 at 05:15:39PM +0800, Li Lingfeng wrote:
> This reverts commit 5735a2671ffb70ea29ca83969fe01316ee2ed6fc which is
> commit 0a9bab391e336489169b95cb0d4553d921302189 upstream.
>
> Tasklet is thought to cause memory corruption [1], so it was disabled in
> dm-crypt and dm-verity. However, memory corruption may not happen since
> cc->io_queue is created without WQ_UNBOUND [2].
> Revert commit 5735a2671ffb ("dm-crypt, dm-verity: disable tasklets") to
> bring tasklet back.
>
> [1] https://lore.kernel.org/all/d390d7ee-f142-44d3-822a-87949e14608b@suse.de/T/
> [2] https://lore.kernel.org/all/4d331659-badd-749d-fba1-271543631a8a@huawei.com/
>
> Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com>
> ---
> drivers/md/dm-crypt.c | 38 +++++++++++++++++++++++++++++++++--
> drivers/md/dm-verity-target.c | 26 ++++++++++++++++++++++--
> drivers/md/dm-verity.h | 1 +
> 3 files changed, 61 insertions(+), 4 deletions(-)
What is the commit id of this in Linus's tree? And why only 6.6.y?
thanks,
greg k-h
next prev parent reply other threads:[~2024-04-11 9:52 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-11 9:15 [PATCH 6.6] Revert "dm-crypt, dm-verity: disable tasklets" Li Lingfeng
2024-04-11 9:52 ` Greg KH [this message]
2024-04-11 12:17 ` Li Lingfeng
2024-04-11 12:37 ` Mikulas Patocka
2024-04-12 2:06 ` Li Lingfeng
2024-04-15 15:04 ` Mikulas Patocka
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