Unverified Commit bf40167d authored by Alexandre Ghiti's avatar Alexandre Ghiti Committed by Palmer Dabbelt
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riscv: vdso: Prevent the compiler from inserting calls to memset() 



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: e2c0cdfb ("RISC-V: User-facing API")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarAlexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: default avatarGuo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20241016083625.136311-2-alexghiti@rivosinc.com


Signed-off-by: default avatarPalmer Dabbelt <palmer@rivosinc.com>
parent 9852d85e

arch/riscv/kernel/vdso/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -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)