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Date: Fri, 5 Aug 2011 05:37:12 GMT From: tip-bot for Andy Lutomirski <luto@....edu> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com, luto@....edu, tglx@...utronix.de, hpa@...ux.intel.com, luto@....edu Subject: [tip:x86/vdso] x86-64: Pad vDSO to a page boundary Commit-ID: 1bdfac19b3ecfca545281c15c7aea7ebc2eaef31 Gitweb: http://git.kernel.org/tip/1bdfac19b3ecfca545281c15c7aea7ebc2eaef31 Author: Andy Lutomirski <luto@....EDU> AuthorDate: Wed, 3 Aug 2011 09:31:49 -0400 Committer: H. Peter Anvin <hpa@...ux.intel.com> CommitDate: Thu, 4 Aug 2011 16:13:34 -0700 x86-64: Pad vDSO to a page boundary This avoids an information leak to userspace. Signed-off-by: Andy Lutomirski <luto@....edu> Link: http://lkml.kernel.org/r/a63380a3c58a0506a2f5a18ba1b12dbde1f25e58.1312378163.git.luto@mit.edu Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com> --- arch/x86/vdso/vdso.S | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/vdso/vdso.S b/arch/x86/vdso/vdso.S index 1b979c1..01f5e3b 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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