linux-kernel - Re: [PATCH] arm64: kaslr: Use standard early random function

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Fri, 7 Aug 2020 12:09:23 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Daniel Díaz <daniel.diaz@...aro.org>,
        tytso@....edu, Qian Cai <cai@....pw>
Subject: Re: [PATCH] arm64: kaslr: Use standard early random function

On Thu, Aug 06, 2020 at 05:49:04PM -0700, Guenter Roeck wrote:

> Use arch_get_random_seed_long_early() instead of arm64 specific functions
> to solve the problem. As a side effect of this change, the code no longer
> bypasses ARCH_RANDOM, which I consider desirable (after all, ARCH_RANDOM
> was disabled for a reason).

This should be fine since the entire implementation is still static
inline in the header other than the prints in the WARN_ON() which should
never be triggered here so it should be fine.

Reviewed-by: Mark Brown <broonie@...nel.org>
Tested-by: Mark Brown <broonie@...nel.org>

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)