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| author | Alexandre Ghiti <alexghiti@rivosinc.com> | 2024-10-16 10:36:24 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-11-08 16:26:45 +0100 |
| commit | 23304adf298133e58f0390b2ca26fa2a05b0245a (patch) | |
| tree | 8a09b627477cd19058d1973ffa3e43d6c7043b63 | |
| parent | 71f14a9f5c7db72fdbc56e667d4ed42a1a760494 (diff) | |
| download | linux-23304adf298133e58f0390b2ca26fa2a05b0245a.tar.gz linux-23304adf298133e58f0390b2ca26fa2a05b0245a.tar.bz2 linux-23304adf298133e58f0390b2ca26fa2a05b0245a.zip | |
riscv: vdso: Prevent the compiler from inserting calls to memset()
[ Upstream commit bf40167d54d55d4b54d0103713d86a8638fb9290 ]
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@vger.kernel.org
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Guo Ren <guoren@kernel.org>
Link: https://lore.kernel.org/r/20241016083625.136311-2-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | arch/riscv/kernel/vdso/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/kernel/vdso/Makefile b/arch/riscv/kernel/vdso/Makefile index 06e6b27f3bcc..c1b68f962bad 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) |