linux-kernel - Re: [PATCH 0/9] [v3] x86, pkeys: two protection keys bug fixes

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]

Message-ID: <20180428082904.ekzsbqx3ohqxygbg@gmail.com>
Date:   Sat, 28 Apr 2018 10:29:04 +0200
From:   Ingo Molnar <mingo@...nel.org>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, linux-mm@...ck.org,
        linuxram@...ibm.com, tglx@...utronix.de, dave.hansen@...el.com,
        mpe@...erman.id.au, akpm@...ux-foundation.org, shuah@...nel.org,
        shakeelb@...gle.com
Subject: Re: [PATCH 0/9] [v3] x86, pkeys: two protection keys bug fixes


* Ingo Molnar <mingo@...nel.org> wrote:

> The hang problem is still there, if I run a script like this:
> 
>  while :; do date; echo -n "32-bit: "; ./protection_keys_32 >/dev/null; date; echo -n "64-bit: "; ./protection_keys_64 >/dev/null; done
> 
> then within a minute one of the testcases hangs reliably.
> 
> Out of 4 attempts so far one hang was in the 32-bit testcase, 3 hangs were in the 
> 64-bit testcase - so 64-bit appears to trigger it more frequently.

Note that even with all fixes in this series applied the self-test hang still 
triggers.

Thanks,

	Ingo