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From: "tip-bot2 for Kees Cook" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: linux-ia64@vger.kernel.org,
	Dave Hansen <dave.hansen@linux.intel.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	"H. Peter Anvin" <hpa@zytor.com>, Will Deacon <will@kernel.org>,
	Ingo Molnar <mingo@kernel.org>,
	linux-arch@vger.kernel.org, linux-s390@vger.kernel.org,
	Yoshinori Sato <ysato@users.sourceforge.jp>,
	x86-ml <x86@kernel.org>, Ingo Molnar <mingo@redhat.com>,
	Borislav Petkov <bp@suse.de>,
	Thomas Lendacky <Thomas.Lendacky@amd.com>,
	Kees Cook <keescook@chromium.org>, Arnd Bergmann <arnd@arndb.de>,
	Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	linux-arm-kernel@lists.infradead.org,
	linux-c6x-dev@linux-c6x.org, Michal Simek <monstr@monstr.eu>,
	linux-kernel@vger.kernel.org, Ross Zwisler <zwisler@chromium.org>,
	linux-alpha@vger.kernel.org,
	Rick Edgecombe <rick.p.edgecombe@intel.com>,
	linuxppc-dev@lists.ozlabs.org
Subject: [tip: x86/build] x86/vmlinux: Move EXCEPTION_TABLE to RO_DATA segment
Date: Tue, 05 Nov 2019 09:27:30 -0000
Message-ID: <157294605067.29376.15944354524301929135.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20191029211351.13243-17-keescook@chromium.org>

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

Commit-ID:     f0d7ee17d57c7a8510518a1e60366d053e2f3ff5
Gitweb:        https://git.kernel.org/tip/f0d7ee17d57c7a8510518a1e60366d053e2f3ff5
Author:        Kees Cook <keescook@chromium.org>
AuthorDate:    Tue, 29 Oct 2019 14:13:38 -07:00
Committer:     Borislav Petkov <bp@suse.de>
CommitterDate: Mon, 04 Nov 2019 17:55:02 +01:00

x86/vmlinux: Move EXCEPTION_TABLE to RO_DATA segment

The exception table was needlessly marked executable. In preparation
for execute-only memory, move the table into the RO_DATA segment via
the new macro that can be used by any architectures that want to make
a similar consolidation.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: linux-alpha@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-c6x-dev@linux-c6x.org
Cc: linux-ia64@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Ross Zwisler <zwisler@chromium.org>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Lendacky <Thomas.Lendacky@amd.com>
Cc: Will Deacon <will@kernel.org>
Cc: x86-ml <x86@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: https://lkml.kernel.org/r/20191029211351.13243-17-keescook@chromium.org
---
 arch/x86/kernel/vmlinux.lds.S | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index a1a758e..b06d6e1 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -22,6 +22,7 @@
 #endif
 
 #define EMITS_PT_NOTE
+#define RO_EXCEPTION_TABLE_ALIGN	16
 
 #include <asm-generic/vmlinux.lds.h>
 #include <asm/asm-offsets.h>
@@ -145,8 +146,6 @@ SECTIONS
 #endif
 	} :text = 0x9090
 
-	EXCEPTION_TABLE(16)
-
 	/* End of text section, which should occupy whole number of pages */
 	_etext = .;
 	. = ALIGN(PAGE_SIZE);

  reply index

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-29 21:13 [PATCH v3 00/29] vmlinux.lds.h: Refactor EXCEPTION_TABLE and NOTES Kees Cook
2019-10-29 21:13 ` [PATCH v3 01/29] powerpc: Rename "notes" PT_NOTE to "note" Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 02/29] powerpc: Remove PT_NOTE workaround Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 03/29] powerpc: Rename PT_LOAD identifier "kernel" to "text" Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 04/29] alpha: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 05/29] ia64: Rename PT_LOAD identifier "code" " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 06/29] s390: Move RO_DATA into "text" PT_LOAD Program Header Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 07/29] x86: Restore "text" Program Header with dummy section Kees Cook
2019-11-05  9:27   ` [tip: x86/build] x86/vmlinux: " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 08/29] vmlinux.lds.h: Provide EMIT_PT_NOTE to indicate export of .notes Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 09/29] vmlinux.lds.h: Move Program Header restoration into NOTES macro Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 10/29] vmlinux.lds.h: Move NOTES into RO_DATA Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 11/29] vmlinux.lds.h: Replace RODATA with RO_DATA Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 12/29] vmlinux.lds.h: Replace RO_DATA_SECTION " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 13/29] vmlinux.lds.h: Replace RW_DATA_SECTION with RW_DATA Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 14/29] vmlinux.lds.h: Allow EXCEPTION_TABLE to live in RO_DATA Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 15/29] x86: Actually use _etext for end of text segment Kees Cook
2019-11-05  9:27   ` [tip: x86/build] x86/vmlinux: Actually use _etext for the end of the " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 16/29] x86: Move EXCEPTION_TABLE to RO_DATA segment Kees Cook
2019-11-05  9:27   ` tip-bot2 for Kees Cook [this message]
2019-10-29 21:13 ` [PATCH v3 17/29] alpha: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 18/29] arm64: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 19/29] c6x: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 20/29] h8300: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 21/29] ia64: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 22/29] microblaze: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 23/29] parisc: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 24/29] powerpc: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 25/29] xtensa: " Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 26/29] x86/mm: Remove redundant &s on addresses Kees Cook
2019-11-05  9:27   ` [tip: x86/build] x86/mm: Remove redundant address-of operators " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 27/29] x86/mm: Report which part of kernel image is freed Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 28/29] x86/mm: Report actual image regions in /proc/iomem Kees Cook
2019-11-05  9:27   ` [tip: x86/build] " tip-bot2 for Kees Cook
2019-10-29 21:13 ` [PATCH v3 29/29] x86: Use INT3 instead of NOP for linker fill bytes Kees Cook
2019-11-05  9:27   ` [tip: x86/build] x86/vmlinux: " tip-bot2 for Kees Cook

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