diff options
| author | Alexandre Ghiti <alexghiti@rivosinc.com> | 2024-10-09 09:27:49 +0200 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-10-25 06:18:36 -0700 |
| commit | afedc3126e11ff1404b32e538657b68022e933ca (patch) | |
| tree | 2eb8f5024178b893a172bff83758bc6f11e8a750 /arch/riscv/errata | |
| parent | 1966db682f064172891275cb951aa8c98a0a809b (diff) | |
riscv: Do not use fortify in early code
Early code designates the code executed when the MMU is not yet enabled,
and this comes with some limitations (see
Documentation/arch/riscv/boot.rst, section "Pre-MMU execution").
FORTIFY_SOURCE must be disabled then since it can trigger kernel panics
as reported in [1].
Reported-by: Jason Montleon <jmontleo@redhat.com>
Closes: https://lore.kernel.org/linux-riscv/CAJD_bPJes4QhmXY5f63GHV9B9HFkSCoaZjk-qCT2NGS7Q9HODg@mail.gmail.com/ [1]
Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head")
Fixes: 26e7aacb83df ("riscv: Allow to downgrade paging mode from the command line")
Cc: stable@vger.kernel.org
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Link: https://lore.kernel.org/r/20241009072749.45006-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/errata')
| -rw-r--r-- | arch/riscv/errata/Makefile | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/riscv/errata/Makefile b/arch/riscv/errata/Makefile index 8a2739485123..f0da9d7b39c3 100644 --- a/arch/riscv/errata/Makefile +++ b/arch/riscv/errata/Makefile @@ -2,6 +2,12 @@ ifdef CONFIG_RELOCATABLE KBUILD_CFLAGS += -fno-pie endif +ifdef CONFIG_RISCV_ALTERNATIVE_EARLY +ifdef CONFIG_FORTIFY_SOURCE +KBUILD_CFLAGS += -D__NO_FORTIFY +endif +endif + obj-$(CONFIG_ERRATA_ANDES) += andes/ obj-$(CONFIG_ERRATA_SIFIVE) += sifive/ obj-$(CONFIG_ERRATA_THEAD) += thead/ |