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kernel: Enable GCC_PLUGIN_RANDSTRUCT on kernels supporting it

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On 4.13 and 4.14 kernels GCC_PLUGIN_RANDSTRUCT can be use to randomise
some kernel data structures such as structs with function pointers.

We also select GCC_PLUGIN_RANDSTRUCT_PERFORMANCE which
tries harder to restrict randomisation to cache-lines in order to reduce
performance impact.

Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
This commit is contained in:
Rolf Neugebauer 2017-11-20 15:10:02 +00:00
parent 8d16426644
commit 66342d0646
4 changed files with 12 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
kernel/config-4.13.x-aarch64
View File

@ -255,7 +255,8 @@ CONFIG_GCC_PLUGINS=y
# CONFIG_GCC_PLUGIN_LATENT_ENTROPY is not set
CONFIG_GCC_PLUGIN_STRUCTLEAK=y
# CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE is not set
# CONFIG_GCC_PLUGIN_RANDSTRUCT is not set
CONFIG_GCC_PLUGIN_RANDSTRUCT=y
CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR_NONE is not set
@ -298,7 +299,7 @@ CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
CONFIG_MODVERSIONS=y
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
# CONFIG_MODULE_COMPRESS is not set

5
kernel/config-4.13.x-x86_64
View File

@ -299,7 +299,8 @@ CONFIG_GCC_PLUGINS=y
# CONFIG_GCC_PLUGIN_LATENT_ENTROPY is not set
CONFIG_GCC_PLUGIN_STRUCTLEAK=y
# CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE is not set
# CONFIG_GCC_PLUGIN_RANDSTRUCT is not set
CONFIG_GCC_PLUGIN_RANDSTRUCT=y
CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR_NONE is not set
@ -353,7 +354,7 @@ CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
CONFIG_MODVERSIONS=y
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
# CONFIG_MODULE_COMPRESS is not set

5
kernel/config-4.14.x-aarch64
View File

@ -259,7 +259,8 @@ CONFIG_GCC_PLUGINS=y
CONFIG_GCC_PLUGIN_STRUCTLEAK=y
CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL=y
# CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE is not set
# CONFIG_GCC_PLUGIN_RANDSTRUCT is not set
CONFIG_GCC_PLUGIN_RANDSTRUCT=y
CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR_NONE is not set
@ -303,7 +304,7 @@ CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
CONFIG_MODVERSIONS=y
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
# CONFIG_MODULE_COMPRESS is not set

5
kernel/config-4.14.x-x86_64
View File

@ -302,7 +302,8 @@ CONFIG_GCC_PLUGINS=y
CONFIG_GCC_PLUGIN_STRUCTLEAK=y
CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL=y
# CONFIG_GCC_PLUGIN_STRUCTLEAK_VERBOSE is not set
# CONFIG_GCC_PLUGIN_RANDSTRUCT is not set
CONFIG_GCC_PLUGIN_RANDSTRUCT=y
CONFIG_GCC_PLUGIN_RANDSTRUCT_PERFORMANCE=y
CONFIG_HAVE_CC_STACKPROTECTOR=y
CONFIG_CC_STACKPROTECTOR=y
# CONFIG_CC_STACKPROTECTOR_NONE is not set
@ -357,7 +358,7 @@ CONFIG_MODULES=y
# CONFIG_MODULE_FORCE_LOAD is not set
CONFIG_MODULE_UNLOAD=y
# CONFIG_MODULE_FORCE_UNLOAD is not set
# CONFIG_MODVERSIONS is not set
CONFIG_MODVERSIONS=y
# CONFIG_MODULE_SRCVERSION_ALL is not set
# CONFIG_MODULE_SIG is not set
# CONFIG_MODULE_COMPRESS is not set