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    Subject[PATCH 6/8] x86: mark some standard sections as broken in a vDSO
    Date
    Some standard sections can't work in a vDSO. Although most of them
    are not very likely to ever appear there, it doesn't hurt to list
    them as a precaution.

    Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
    ---
    arch/x86/vdso/vdso-layout.lds.S | 19 +++++++++++++++++++
    1 files changed, 19 insertions(+), 0 deletions(-)

    diff --git a/arch/x86/vdso/vdso-layout.lds.S b/arch/x86/vdso/vdso-layout.lds.S
    index 2f0830f..0da3db0 100644
    --- a/arch/x86/vdso/vdso-layout.lds.S
    +++ b/arch/x86/vdso/vdso-layout.lds.S
    @@ -71,6 +71,25 @@ SECTIONS
    * if they get used by accident.
    */
    .broken : {
    + /* Code in the Procedure Linkage Table will segfault */
    + *(.plt)
    +
    + /* Relocation will not be done, so any pointers will
    + * still point to the prelinked address, which is wrong
    + */
    + *(.data.rel.ro*)
    + *(.gnu.linkonce.d.rel.ro.*)
    +
    + /* Initialization/termination won't work this way */
    + *(.init) *(.fini)
    + *(.preinit_array) *(.init_array*)
    + *(.fini_array*)
    +
    + /* Thread-local storage cannot be defined like this */
    + *(.tdata .tdata.* .gnu.linkonce.td.*)
    + *(.tbss .tbss.* .gnu.linkonce.tb.*)
    + *(.tcommon)
    +
    /* The vDSO setup code does not handle alternative
    * instructions.
    */
    --
    1.6.0.2


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