Re: [PATCH 6.6] Revert "dm-crypt, dm-verity: disable tasklets"

From: Greg KH
Date: Thu Apr 11 2024 - 05:52:58 EST


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@xxxxxxx/T/
> [2] https://lore.kernel.org/all/4d331659-badd-749d-fba1-271543631a8a@xxxxxxxxxx/
>
> Signed-off-by: Li Lingfeng <lilingfeng3@xxxxxxxxxx>
> ---
> 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