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| author | Alexander Popov <alex.popov@linux.com> | 2018-08-17 00:17:03 +0200 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2018-09-04 19:35:48 +0200 |
| commit | 964c9dff0091893a9a74a88edf984c6da0b779f7 (patch) | |
| tree | 162d45af3ac44401db524294e67e396ddee476f4 /scripts/gcc-plugins | |
| parent | doc: self-protection: Add information about STACKLEAK feature (diff) | |
| download | linux-964c9dff0091893a9a74a88edf984c6da0b779f7.tar.xz linux-964c9dff0091893a9a74a88edf984c6da0b779f7.zip | |
stackleak: Allow runtime disabling of kernel stack erasing
Introduce CONFIG_STACKLEAK_RUNTIME_DISABLE option, which provides
'stack_erasing' sysctl. It can be used in runtime to control kernel
stack erasing for kernels built with CONFIG_GCC_PLUGIN_STACKLEAK.
Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Alexander Popov <alex.popov@linux.com>
Tested-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'scripts/gcc-plugins')
| -rw-r--r-- | scripts/gcc-plugins/Kconfig | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/scripts/gcc-plugins/Kconfig b/scripts/gcc-plugins/Kconfig index b0a015ef5268..0d5c799688f0 100644 --- a/scripts/gcc-plugins/Kconfig +++ b/scripts/gcc-plugins/Kconfig @@ -182,4 +182,12 @@ config STACKLEAK_METRICS can be useful for estimating the STACKLEAK performance impact for your workloads. +config STACKLEAK_RUNTIME_DISABLE + bool "Allow runtime disabling of kernel stack erasing" + depends on GCC_PLUGIN_STACKLEAK + help + This option provides 'stack_erasing' sysctl, which can be used in + runtime to control kernel stack erasing for kernels built with + CONFIG_GCC_PLUGIN_STACKLEAK. + endif |