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Date: Tue, 10 Aug 2021 19:29:25 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>, Palmer Dabbelt <palmerdabbelt@...gle.com>, Sasha Levin <sashal@...nel.org> Subject: [PATCH 5.13 057/175] riscv: Disable STACKPROTECTOR_PER_TASK if GCC_PLUGIN_RANDSTRUCT is enabled From: Guenter Roeck <linux@...ck-us.net> [ Upstream commit a18b14d8886614b3c7d290c4cfc33389822b0535 ] 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@...ck-us.net> Signed-off-by: Palmer Dabbelt <palmerdabbelt@...gle.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- arch/riscv/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 18ec0f9bb8d5..3c3647ac33cb 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -489,6 +489,7 @@ 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 -- 2.30.2
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