From: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
commit 74016701fe5f873ae23bf02835407227138d874d upstream.
'thread' doesn't exist in kuap_check() macro.
Use 'current' instead.
Fixes: a68c31fc01ef ("powerpc/32s: Implement Kernel Userspace Access Protection")
Cc: stable@xxxxxxxxxxxxxxx
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/b459e1600b969047a74e34251a84a3d6fdf1f312.1590858925.git.christophe.leroy@xxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/book3s/32/kup.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/powerpc/include/asm/book3s/32/kup.h
+++ b/arch/powerpc/include/asm/book3s/32/kup.h
@@ -2,6 +2,7 @@
#ifndef _ASM_POWERPC_BOOK3S_32_KUP_H
#define _ASM_POWERPC_BOOK3S_32_KUP_H
+#include <asm/bug.h>
#include <asm/book3s/32/mmu-hash.h>
#ifdef __ASSEMBLY__
@@ -75,7 +76,7 @@
.macro kuap_check current, gpr
#ifdef CONFIG_PPC_KUAP_DEBUG
- lwz \gpr, KUAP(thread)
+ lwz \gpr, THREAD + KUAP(\current)
999: twnei \gpr, 0
EMIT_BUG_ENTRY 999b, __FILE__, __LINE__, (BUGFLAG_WARNING | BUGFLAG_ONCE)
#endif
