linux-kernel - Re: [PATCH] padata: Fix list iterator in padata_do

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Message-ID: <Y4COxhOZk1wcEbzy@gondor.apana.org.au>
Date:   Fri, 25 Nov 2022 17:45:42 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Daniel Jordan <daniel.m.jordan@...cle.com>
Cc:     Steffen Klassert <steffen.klassert@...unet.com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] padata: Fix list iterator in padata_do_serial()

On Wed, Nov 16, 2022 at 08:28:04PM -0500, Daniel Jordan wrote:
> list_for_each_entry_reverse() assumes that the iterated list is nonempty
> and that every list_head is embedded in the same type, but its use in
> padata_do_serial() breaks both rules.
> 
> This doesn't cause any issues now because padata_priv and padata_list
> happen to have their list fields at the same offset, but we really
> shouldn't be relying on that.
> 
> Fixes: bfde23ce200e ("padata: unbind parallel jobs from specific CPUs")
> Signed-off-by: Daniel Jordan <daniel.m.jordan@...cle.com>
> ---
>  kernel/padata.c | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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