From 1bdfac19b3ecfca545281c15c7aea7ebc2eaef31 Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Wed, 3 Aug 2011 09:31:49 -0400 Subject: [PATCH] x86-64: Pad vDSO to a page boundary This avoids an information leak to userspace. Signed-off-by: Andy Lutomirski Link: http://lkml.kernel.org/r/a63380a3c58a0506a2f5a18ba1b12dbde1f25e58.1312378163.git.luto@mit.edu Signed-off-by: H. Peter Anvin --- arch/x86/vdso/vdso.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/vdso/vdso.S b/arch/x86/vdso/vdso.S index 1b979c12ba85..01f5e3b4613c 100644 --- a/arch/x86/vdso/vdso.S +++ b/arch/x86/vdso/vdso.S @@ -9,6 +9,7 @@ __PAGE_ALIGNED_DATA vdso_start: .incbin "arch/x86/vdso/vdso.so" vdso_end: + .align PAGE_SIZE /* extra data here leaks to userspace. */ .previous -- GitLab