lkml.org 
[lkml]   [2011]   [Aug]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    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@MIT.EDU>
    AuthorDate: Wed, 3 Aug 2011 09:31:49 -0400
    Committer: H. Peter Anvin <hpa@linux.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@mit.edu>
    Link: http://lkml.kernel.org/r/a63380a3c58a0506a2f5a18ba1b12dbde1f25e58.1312378163.git.luto@mit.edu
    Signed-off-by: H. Peter Anvin <hpa@linux.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


    \
     
     \ /
      Last update: 2011-08-05 07:39    [W:0.024 / U:31.380 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site