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| author | Andy Lutomirski <luto@MIT.EDU> | 2011-08-03 09:31:49 -0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2011-08-04 16:13:34 -0700 |
| commit | 1bdfac19b3ecfca545281c15c7aea7ebc2eaef31 (patch) | |
| tree | 97e228c8e74b16451cd82fbc52abd674cda9e17e /arch/x86/vdso | |
| parent | 17b0436077d99211d8b26886235a36c5ec54ac57 (diff) | |
| download | blackbird-op-linux-1bdfac19b3ecfca545281c15c7aea7ebc2eaef31.tar.gz blackbird-op-linux-1bdfac19b3ecfca545281c15c7aea7ebc2eaef31.zip | |
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>
Diffstat (limited to 'arch/x86/vdso')
| -rw-r--r-- | 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 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 |
