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authorJoshua Lock <joshua.g.lock@intel.com>2016-08-11 15:58:41 +0100
committerJoshua Lock <joshua.g.lock@intel.com>2016-08-19 16:24:32 +0100
commitd7af57b9c8284eaa96fa6c0a560c0047b03fb911 (patch)
tree97fd612135de0ced3cb02ce6759588569bc5df14
parent3d0c1a2e16f3e7d08d2be97a4b9540f0ba713e94 (diff)
downloadopenembedded-core-contrib-d7af57b9c8284eaa96fa6c0a560c0047b03fb911.tar.gz
security_flags: pass ssp-buffer-size param to stack protector
This tells the compiler to use a canary to protect any function which declares a character array of 4 or more bytes on its stack, rather than the default of 8 or more bytes. Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
-rw-r--r--meta/conf/distro/include/security_flags.inc4
1 files changed, 2 insertions, 2 deletions
diff --git a/meta/conf/distro/include/security_flags.inc b/meta/conf/distro/include/security_flags.inc
index 77fade6d03..691cea1156 100644
--- a/meta/conf/distro/include/security_flags.inc
+++ b/meta/conf/distro/include/security_flags.inc
@@ -12,8 +12,8 @@ lcl_maybe_fortify = "${@base_conditional('DEBUG_BUILD','1','','-D_FORTIFY_SOURCE
# Error on use of format strings that represent possible security problems
SECURITY_STRINGFORMAT ?= "-Wformat -Wformat-security -Werror=format-security"
-SECURITY_CFLAGS ?= "-fstack-protector-strong -pie -fpie ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}"
-SECURITY_NO_PIE_CFLAGS ?= "-fstack-protector-strong ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}"
+SECURITY_CFLAGS ?= "-fstack-protector-strong --param ssp-buffer-size=4 -pie -fpie ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}"
+SECURITY_NO_PIE_CFLAGS ?= "-fstack-protector-strong --param ssp-buffer-size=4 ${lcl_maybe_fortify} ${SECURITY_STRINGFORMAT}"
SECURITY_LDFLAGS ?= "-Wl,-z,relro,-z,now"
SECURITY_X_LDFLAGS ?= "-Wl,-z,relro"