x86, relocs: Move __vvar_page from S_ABS to S_REL

The __vvar_page relocation should actually be listed in S_REL instead
of S_ABS. Oddly, this didn't always cause things to break, presumably
because there are no users for relocation information on 64 bits yet.

[ hpa: Not for stable - new code in 3.10 ]

Signed-off-by: Kees Cook <keescook@chromium.org>
Link: http://lkml.kernel.org/r/20130611185652.GA23674@www.outflux.net
Reported-by: Michael Davidson <md@google.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index 590be10..f7bab68 100644 (file)
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -42,9 +42,6 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = {
        "^(xen_irq_disable_direct_reloc$|"
        "xen_save_fl_direct_reloc$|"
        "VDSO|"
-#if ELF_BITS == 64
-       "__vvar_page|"
-#endif
        "__crc_)",
 
 /*
@@ -72,6 +69,7 @@ static const char * const sym_regex_kernel[S_NSYMTYPES] = {
        "__per_cpu_load|"
        "init_per_cpu__.*|"
        "__end_rodata_hpage_align|"
+       "__vvar_page|"
 #endif
        "_end)$"
 };