From: Roland Hieber <rhi@pengutronix.de>
To: distrokit@pengutronix.de
Cc: Roland Hieber <rhi@pengutronix.de>
Subject: [DistroKit] [PATCH v2 11/12] v8a: enable gcc stack clash protection
Date: Mon, 11 Mar 2019 00:40:44 +0100 [thread overview]
Message-ID: <20190310234045.29600-12-rhi@pengutronix.de> (raw)
In-Reply-To: <20190310234045.29600-1-rhi@pengutronix.de>
This setting was introduced in PTXdist 2019.03.0:
Generate code to prevent stack clash style attacks. When this
option is enabled, the compiler will only allocate one page of
stack space at a time and each page is accessed immediately after
allocation. Thus, it prevents allocations from jumping over any
stack guard page provided by the operating system.
Make use of it to get more secure binaries with gcc-8's new
-fstack-clash-protection option.
Signed-off-by: Roland Hieber <rhi@pengutronix.de>
---
configs/platform-v8a/platformconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/configs/platform-v8a/platformconfig b/configs/platform-v8a/platformconfig
index 711e261..0755c55 100644
--- a/configs/platform-v8a/platformconfig
+++ b/configs/platform-v8a/platformconfig
@@ -78,7 +78,7 @@ PTXCONF_COMPILER_PREFIX_BOOTLOADER="${PTXCONF_COMPILER_PREFIX}"
PTXCONF_TARGET_HARDEN_STACK=y
# PTXCONF_TARGET_HARDEN_STACK_STRONG is not set
# PTXCONF_TARGET_HARDEN_STACK_ALL is not set
-# PTXCONF_TARGET_HARDEN_STACKCLASH is not set
+PTXCONF_TARGET_HARDEN_STACKCLASH=y
PTXCONF_TARGET_HARDEN_FORTIFY=y
PTXCONF_TARGET_HARDEN_RELRO=y
PTXCONF_TARGET_HARDEN_BINDNOW=y
--
2.20.1
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next prev parent reply other threads:[~2019-03-10 23:40 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-10 23:40 [DistroKit] [PATCH v2 00/12] ptxdist and toolchain version bump Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 01/12] gitignore all old config files Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 02/12] scripts: add helper to run PTXdist on all platformconfigs Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 03/12] ptxdist: version bump 2019.02.0 → 2019.03.0 Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 04/12] rpi: toolchain version bump 2018.02 → 2018.12 Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 05/12] rpi: enable gcc stack clash protection Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 06/12] rpi: sync kernelconfig Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 07/12] v7a: toolchain version bump 2018.02 → 2018.12 Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 08/12] v7a: enable gcc stack clash protection Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 09/12] v7a: sync kernelconfig Roland Hieber
2019-03-10 23:40 ` [DistroKit] [PATCH v2 10/12] v8a: toolchain version bump 2018.02 → 2018.12 Roland Hieber
2019-03-10 23:40 ` Roland Hieber [this message]
2019-03-10 23:40 ` [DistroKit] [PATCH v2 12/12] v8a: sync kernelconfig Roland Hieber
2019-03-11 5:51 ` [DistroKit] [PATCH v2 00/12] ptxdist and toolchain version bump Robert Schwebel
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