[PATCH v3 1/2] riscv: vdso: Prevent the compiler from inserting calls to memset()
Alexandre Ghiti
alexghiti at rivosinc.com
Wed Oct 16 01:36:24 PDT 2024
The compiler is smart enough to insert a call to memset() in
riscv_vdso_get_cpus(), which generates a dynamic relocation.
So prevent this by using -fno-builtin option.
Fixes: e2c0cdfba7f6 ("RISC-V: User-facing API")
Cc: stable at vger.kernel.org
Signed-off-by: Alexandre Ghiti <alexghiti at rivosinc.com>
---
arch/riscv/kernel/vdso/Makefile | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile
index 960feb1526ca..3f1c4b2d0b06 100644
--- a/arch/riscv/kernel/vdso/Makefile
+++ b/arch/riscv/kernel/vdso/Makefile
@@ -18,6 +18,7 @@ obj-vdso = $(patsubst %, %.o, $(vdso-syms)) note.o
ccflags-y := -fno-stack-protector
ccflags-y += -DDISABLE_BRANCH_PROFILING
+ccflags-y += -fno-builtin
ifneq ($(c-gettimeofday-y),)
CFLAGS_vgettimeofday.o += -fPIC -include $(c-gettimeofday-y)
--
2.39.2
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