[PATCH v3 10/17] arm64: disable kretprobes with SCS

From: samitolvanen
Date: Thu Oct 31 2019 - 12:47:15 EST


With CONFIG_KRETPROBES, function return addresses are modified to
redirect control flow to kretprobe_trampoline. This is incompatible
with SCS.

Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
---
arch/arm64/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 3f047afb982c..e7b57a8a5531 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -165,7 +165,7 @@ config ARM64
select HAVE_STACKPROTECTOR
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_KPROBES
- select HAVE_KRETPROBES
+ select HAVE_KRETPROBES if !SHADOW_CALL_STACK
select HAVE_GENERIC_VDSO
select IOMMU_DMA if IOMMU_SUPPORT
select IRQ_DOMAIN
--
2.24.0.rc0.303.g954a862665-goog