powerpc/ptdump: Fix W+X verification call in mark_rodata_ro()

commit e26ad936dd89d79f66c2b567f700e0c2a7103070 upstream.

ptdump_check_wx() also have to be called when pages are mapped
by blocks.

Fixes: 453d87f6a8ae ("powerpc/mm: Warn if W+X pages found on boot")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/37517da8310f4457f28921a4edb88fb21d27b62a.1578989531.git.christophe.leroy@c-s.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index 8ec5dfb..784cae9 100644 (file)
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -221,6 +221,7 @@ void mark_rodata_ro(void)
 
        if (v_block_mapped((unsigned long)_sinittext)) {
                mmu_mark_rodata_ro();
+               ptdump_check_wx();
                return;
        }