lkml.org 
[lkml]   [2020]   [Feb]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 5.4 54/96] powerpc/ptdump: Fix W+X verification call in mark_rodata_ro()
Date
From: Christophe Leroy <christophe.leroy@c-s.fr>

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>

---
arch/powerpc/mm/pgtable_32.c | 1 +
1 file changed, 1 insertion(+)

--- 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;
}


\
 
 \ /
  Last update: 2020-02-13 16:37    [W:0.340 / U:2.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site