linux-kernel - [tip: x86/build] xtensa: Move EXCEPTION_TABLE to RO

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Message-ID: <157294604726.29376.12527593781479789931.tip-bot2@tip-bot2>
Date:   Tue, 05 Nov 2019 09:27:27 -0000
From:   "tip-bot2 for Kees Cook" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Kees Cook <keescook@...omium.org>, Borislav Petkov <bp@...e.de>,
        Max Filippov <jcmvbkbc@...il.com>,
        Andy Lutomirski <luto@...nel.org>,
        Arnd Bergmann <arnd@...db.de>, Chris Zankel <chris@...kel.net>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        linux-alpha@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-c6x-dev@...ux-c6x.org,
        linux-ia64@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-s390@...r.kernel.org, linux-xtensa@...ux-xtensa.org,
        Michael Ellerman <mpe@...erman.id.au>,
        Michal Simek <monstr@...str.eu>,
        Rick Edgecombe <rick.p.edgecombe@...el.com>,
        Segher Boessenkool <segher@...nel.crashing.org>,
        Will Deacon <will@...nel.org>, "x86-ml" <x86@...nel.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/build] xtensa: Move EXCEPTION_TABLE to RO_DATA segment

The following commit has been merged into the x86/build branch of tip:

Commit-ID:     94174c9b71c62a0e1a4364c2594e1422ba8fffcd
Gitweb:        https://git.kernel.org/tip/94174c9b71c62a0e1a4364c2594e1422ba8fffcd
Author:        Kees Cook <keescook@...omium.org>
AuthorDate:    Tue, 29 Oct 2019 14:13:47 -07:00
Committer:     Borislav Petkov <bp@...e.de>
CommitterDate: Mon, 04 Nov 2019 18:42:27 +01:00

xtensa: Move EXCEPTION_TABLE to RO_DATA segment

Since the EXCEPTION_TABLE is read-only, collapse it into RO_DATA.

Signed-off-by: Kees Cook <keescook@...omium.org>
Signed-off-by: Borislav Petkov <bp@...e.de>
Acked-by: Max Filippov <jcmvbkbc@...il.com>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Arnd Bergmann <arnd@...db.de>
Cc: Chris Zankel <chris@...kel.net>
Cc: Dave Hansen <dave.hansen@...ux.intel.com>
Cc: Geert Uytterhoeven <geert@...ux-m68k.org>
Cc: Heiko Carstens <heiko.carstens@...ibm.com>
Cc: linux-alpha@...r.kernel.org
Cc: linux-arch@...r.kernel.org
Cc: linux-arm-kernel@...ts.infradead.org
Cc: linux-c6x-dev@...ux-c6x.org
Cc: linux-ia64@...r.kernel.org
Cc: linuxppc-dev@...ts.ozlabs.org
Cc: linux-s390@...r.kernel.org
Cc: linux-xtensa@...ux-xtensa.org
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Michal Simek <monstr@...str.eu>
Cc: Rick Edgecombe <rick.p.edgecombe@...el.com>
Cc: Segher Boessenkool <segher@...nel.crashing.org>
Cc: Will Deacon <will@...nel.org>
Cc: x86-ml <x86@...nel.org>
Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
Link: https://lkml.kernel.org/r/20191029211351.13243-26-keescook@chromium.org
---
 arch/xtensa/kernel/vmlinux.lds.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/xtensa/kernel/vmlinux.lds.S b/arch/xtensa/kernel/vmlinux.lds.S
index bdbd7c4..0043d58 100644
--- a/arch/xtensa/kernel/vmlinux.lds.S
+++ b/arch/xtensa/kernel/vmlinux.lds.S
@@ -14,6 +14,8 @@
  * Joe Taylor <joe@...silica.com, joetylr@...oo.com>
  */
 
+#define RO_EXCEPTION_TABLE_ALIGN	16
+
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/page.h>
 #include <asm/thread_info.h>
@@ -130,7 +132,6 @@ SECTIONS
 
   .fixup   : { *(.fixup) }
 
-  EXCEPTION_TABLE(16)
   /* Data section */
 
   _sdata = .;