From: Jean PIHET <jpihet@mvista.com>
Date: Mon, 23 Nov 2009 16:03:32 +0000 (+0100)
Subject: ARM: 5793/1: ARM: Check put_user fail in do_signal when enable OABI_COMPAT
X-Git-Tag: v2.6.32~36^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3336f4f08e0dad7a2b6493c80b49b685141d53ad;p=pandora-kernel.git

ARM: 5793/1: ARM: Check put_user fail in do_signal when enable OABI_COMPAT

Using OABI, the call to put_user in do_signal can fail causing the
calling app to hang.

The solution is to check if put_user fails and force the app to
seg fault in that case.

Tested with multiple sleeping apps/threads (using the nanosleep syscall)
and suspend/resume.

Signed-off-by: janboe <janboe.ye at gmail.com>
Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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