linux-kernel - Re: [RFC] memdup

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Message-ID: <20180107084833.GA5511@avx2>
Date:   Sun, 7 Jan 2018 11:48:33 +0300
From:   Alexey Dobriyan <adobriyan@...il.com>
To:     viro@...iv.linux.org.uk
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [RFC] memdup_user() and friends

> Objections?

No objections in particular except the amount of mirrored allocator
interfaces is getting pretty ridiculous.

Another thing, blindly changing kmalloc+copy_from_user to memdup_user
can be wrong because of GFP_KERNEL_ACCOUNT if the memory is allocated
persistently.