RISC-V: Handle R_RISCV_32 in modules

With CONFIG_MODVERSIONS=y the R_RISCV_32 relocation is used by the
__kcrctab section.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/arch/riscv/kernel/module.c b/arch/riscv/kernel/module.c
index 5dddba301d0a..1d5e9b934b8c 100644
--- a/arch/riscv/kernel/module.c
+++ b/arch/riscv/kernel/module.c
@@ -17,6 +17,17 @@
 #include <linux/errno.h>
 #include <linux/moduleloader.h>
 
+static int apply_r_riscv_32_rela(struct module *me, u32 *location, Elf_Addr v)
+{
+        if (v != (u32)v) {
+                pr_err("%s: value %016llx out of range for 32-bit field\n",
+                       me->name, v);
+                return -EINVAL;
+        }
+        *location = v;
+        return 0;
+}
+
 static int apply_r_riscv_64_rela(struct module *me, u32 *location, Elf_Addr v)
 {
         *(u64 *)location = v;
@@ -265,6 +276,7 @@ static int apply_r_riscv_sub32_rela(struct module *me, u32 *location,
 
 static int (*reloc_handlers_rela[]) (struct module *me, u32 *location,
                                 Elf_Addr v) = {
+        [R_RISCV_32]                    = apply_r_riscv_32_rela,
         [R_RISCV_64]                    = apply_r_riscv_64_rela,
         [R_RISCV_BRANCH]                = apply_r_riscv_branch_rela,
         [R_RISCV_JAL]                   = apply_r_riscv_jal_rela,