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We will be enabling THREAD_INFO_IN_TASK support for ARM, which means that we can no longer load the stack canary value by masking the stack pointer and taking the copy that lives in thread_info. Instead, we will be able to load it from the task_struct directly, by using the TPIDRURO register which will hold the current task pointer when THREAD_INFO_IN_TASK is in effect. This is much more straight-forward, and allows us to declutter this code a bit while at it. Note that this means that ARMv6 (non-v6K) SMP systems can no longer use this feature, but those are quite rare to begin with, so this is a reasonable trade off. Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Amit Daniel Kachhap <amit.kachhap@arm.com> |
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| .. | ||
| .gitignore | ||
| arm_ssp_per_task_plugin.c | ||
| cyc_complexity_plugin.c | ||
| gcc-common.h | ||
| gcc-generate-gimple-pass.h | ||
| gcc-generate-ipa-pass.h | ||
| gcc-generate-rtl-pass.h | ||
| gcc-generate-simple_ipa-pass.h | ||
| gen-random-seed.sh | ||
| Kconfig | ||
| latent_entropy_plugin.c | ||
| Makefile | ||
| randomize_layout_plugin.c | ||
| sancov_plugin.c | ||
| stackleak_plugin.c | ||
| structleak_plugin.c | ||