From mboxrd@z Thu Jan  1 00:00:00 1970
From: Al Viro <viro@ZenIV.linux.org.uk>
Subject: Re: [revert request for commit 9fff2fa] Re: [git pull] signals pile 3
Date: Sun, 14 Oct 2012 20:56:11 +0100
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Cc: Linus Torvalds <torvalds@linux-foundation.org>, Russell King - ARM Linux <linux@arm.linux.org.uk>, linux-kernel@vger.kernel.org, linux-arch@vger.kernel.org, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, Catalin Marinas <catalin.marinas@arm.com>

On Sun, Oct 14, 2012 at 08:24:03PM +0100, Al Viro wrote:

> Russell, could you recall what those had been about?  I'm not sure if that
> had been oopsable that far back (again, oops scenario is userland stack
> page getting swapped out before we get to start_thread(), leading to
> direct read from an absent page in start_thread() by plain ldr, without
> anything in exception table about that insn), but it looks very odd
> regardless of that problem.

BTW, arm64 has copied that logics, so it also seems to be unsafe and very
odd - there we definitely have only ELF to cope with.  arm64 folks Cc'd...