5.10-stable review patch. If anyone has any objections, please let me know.
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From: Guenter Roeck linux@roeck-us.net
commit a18b14d8886614b3c7d290c4cfc33389822b0535 upstream.
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") Signed-off-by: Guenter Roeck linux@roeck-us.net Signed-off-by: Palmer Dabbelt palmerdabbelt@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/riscv/Kconfig | 1 + 1 file changed, 1 insertion(+)
--- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -450,6 +450,7 @@ config CC_HAVE_STACKPROTECTOR_TLS
config STACKPROTECTOR_PER_TASK def_bool y + depends on !GCC_PLUGIN_RANDSTRUCT depends on STACKPROTECTOR && CC_HAVE_STACKPROTECTOR_TLS
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