From: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Mon, 5 Jan 2015 15:27:51 +0000 (+0100)
Subject: x86/xen: avoid freeing static 'name' when kasprintf() fails
X-Git-Tag: omap-for-v4.1/prcm-dts-mfd-syscon-fix~288^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7be0772d19103b3eac3c2e9ac325df2563273fdc;p=pandora-kernel.git

x86/xen: avoid freeing static 'name' when kasprintf() fails

In case kasprintf() fails in xen_setup_timer() we assign name to the
static string "<timer kasprintf failed>". We, however, don't check
that fact before issuing kfree() in xen_teardown_timer(), kernel is
supposed to crash with 'kernel BUG at mm/slub.c:3341!'

Solve the issue by making name a fixed length string inside struct
xen_clock_event_device. 16 bytes should be enough.

Suggested-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
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