From: Jan Glauber <jang@linux.vnet.ibm.com>
Date: Wed, 20 Apr 2011 08:15:31 +0000 (+0200)
Subject: [S390] prng: prevent access beyond end of stack
X-Git-Tag: v2.6.39-rc5~4^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c708c57e247775928b9a6bce7b4d8d14883bf39b;p=pandora-kernel.git

[S390] prng: prevent access beyond end of stack

While initializing the state of the prng only the first 8 bytes of
random data where used, the second 8 bytes were read from the memory
after the stack. If only 64 bytes of the kernel stack are used and
CONFIG_DEBUG_PAGEALLOC is enabled a kernel panic may occur because of
the invalid page access. Use the correct multiplicator to stay within
the random data buffer.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

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