diff options
| author | Gregory Fong | 2013-06-12 17:08:54 +0000 |
|---|---|---|
| committer | Ralf Baechle | 2013-07-01 15:10:48 +0200 |
| commit | 36ecafc5ad17861e2bc1fb12af4cc97680e25942 (patch) | |
| tree | 8b1094782049660b366b417119d34a5a519e0c95 /arch/mips/kernel | |
| parent | 23df34155b29674465813b327647cd79722aa659 (diff) | |
MIPS: initial stack protector support
Implements basic stack protector support based on ARM version in
c743f38013aeff58ef6252601e397b5ba281c633 , with Kconfig option,
constant canary value set at boot time, and script to check if
compiler actually supports stack protector.
Tested by creating a kernel module that writes past end of char[].
Signed-off-by: Gregory Fong <gregory.0xf0@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Filippo Arcidiacono <filippo.arcidiacono@st.com>
Cc: Carmelo Amoroso <carmelo.amoroso@st.com>
Patchwork: https://patchwork.linux-mips.org/patch/5448/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel')
| -rw-r--r-- | arch/mips/kernel/process.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c index c6a041d9d05d..7d62894f7e23 100644 --- a/arch/mips/kernel/process.c +++ b/arch/mips/kernel/process.c @@ -201,6 +201,12 @@ int dump_task_fpu(struct task_struct *t, elf_fpregset_t *fpr) return 1; } +#ifdef CONFIG_CC_STACKPROTECTOR +#include <linux/stackprotector.h> +unsigned long __stack_chk_guard __read_mostly; +EXPORT_SYMBOL(__stack_chk_guard); +#endif + /* * */ |