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x86-64: Pad vDSO to a page boundary 

This avoids an information leak to userspace.

Signed-off-by: Andy Lutomirski <luto@mit.edu>
Link: http://lkml.kernel.org/r/a63380a3c58a0506a2f5a18ba1b12dbde1f25e58.1312378163.git.luto@mit.edu
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Andy Lutomirski 2011-08-03 09:31:49 -04:00 committed by H. Peter Anvin
parent 17b0436077
commit 1bdfac19b3
1 changed files with 1 additions and 0 deletions
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1
arch/x86/vdso/vdso.S
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@ -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