[PATCH] riscv: Disable STACKPROTECTOR_PER_TASK if GCC_PLUGIN_RANDSTRUCT is enabled
Guenter Roeck
linux at roeck-us.net
Tue Jul 6 09:26:21 PDT 2021
riscv uses the value of TSK_STACK_CANARY to set
stack-protector-guard-offset. With GCC_PLUGIN_RANDSTRUCT enabled, that
value is non-deterministic, and with riscv:allmodconfig often results
in build errors such as
cc1: error: '8120' is not a valid offset in '-mstack-protector-guard-offset='
Enable STACKPROTECTOR_PER_TASK only if GCC_PLUGIN_RANDSTRUCT is disabled
to fix the problem.
Fixes: fea2fed201ee5 ("riscv: Enable per-task stack canaries")
Cc: Guo Ren <guoren at linux.alibaba.com>
Signed-off-by: Guenter Roeck <linux at roeck-us.net>
---
arch/riscv/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 469a70bd8da6..3afb84fa2190 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -486,6 +486,7 @@ config CC_HAVE_STACKPROTECTOR_TLS
config STACKPROTECTOR_PER_TASK
def_bool y
+ depends on !GCC_PLUGIN_RANDSTRUCT
depends on STACKPROTECTOR && CC_HAVE_STACKPROTECTOR_TLS
config PHYS_RAM_BASE_FIXED
--
2.25.1
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