31 lines
922 B
Diff
31 lines
922 B
Diff
References: CVE-2013-0154 XSA-37 bnc#797031
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# HG changeset patch
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# User Jan Beulich <jbeulich@suse.com>
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# Date 1357564826 -3600
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# Node ID e1facbde56ff4e5e85f9a4935abc99eb24367cd0
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# Parent 8e942f2f3b45edc5bb1f7a6e05de288342426f0d
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x86: fix assertion in get_page_type()
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c/s 22998:e9fab50d7b61 (and immediately following ones) made it
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possible that __get_page_type() returns other than -EINVAL, in
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particular -EBUSY. Consequently, the assertion in get_page_type()
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should check for only the return values we absolutely don't expect to
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see there.
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This is XSA-37 / CVE-2013-0154.
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Signed-off-by: Jan Beulich <jbeulich@suse.com>
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--- a/xen/arch/x86/mm.c
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+++ b/xen/arch/x86/mm.c
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@@ -2603,7 +2603,7 @@ int get_page_type(struct page_info *page
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int rc = __get_page_type(page, type, 0);
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if ( likely(rc == 0) )
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return 1;
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- ASSERT(rc == -EINVAL);
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+ ASSERT(rc != -EINTR && rc != -EAGAIN);
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return 0;
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}
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