linux-kernel - MIPS: hang in kmalloc with seccomp writer locks

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Message-ID: <CAOLZvyFuDqi4+pEae=n7+ZJoAx-vca-pRS8ZAQqvTk-tSyPiwg@mail.gmail.com>
Date:	Mon, 11 Aug 2014 13:35:28 +0200
From:	Manuel Lauss <manuel.lauss@...il.com>
To:	Kees Cook <keescook@...omium.org>
Cc:	Linux-MIPS <linux-mips@...ux-mips.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: MIPS: hang in kmalloc with seccomp writer locks

Hi Kees,

My MIPS32 toys hang early during bootup at the first kmalloc() with
seccomp enabled.
I've bisected it to commit dbd952127d11bb44a4ea30b08cc60531b6a23d71
("seccomp: introduce writer locking").  And indeed, reverting this
commit fixes the hang.

I'm not sure if seccomp is even working on MIPS, but I've never had
problems with
it before so I thought I let you know.

Thanks, and have a nice day!
      Manuel
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