From: Christian Borntraeger <borntraeger@de.ibm.com>
Date: Thu, 21 Jan 2010 11:19:07 +0000 (+0100)
Subject: KVM: S390: fix potential array overrun in intercept handling
X-Git-Tag: v2.6.27.45~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=244e540e0c37b917a62e56e733c10fb7c85767ce;p=pandora-kernel.git

KVM: S390: fix potential array overrun in intercept handling

commit 062d5e9b0d714f449b261bb522eadaaf6f00f438 upstream.

kvm_handle_sie_intercept uses a jump table to get the intercept handler
for a SIE intercept. Static code analysis revealed a potential problem:
the intercept_funcs jump table was defined to contain (0x48 >> 2) entries,
but we only checked for code > 0x48 which would cause an off-by-one
array overflow if code == 0x48.

Use the compiler and ARRAY_SIZE to automatically set the limits.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

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