4.17-stable review patch. If anyone has any objections, please let me know.
------------------
From: Andreas Schwab <schwab@xxxxxxx>
[ Upstream commit 781c8fe2da3d2c7c95cd7ffddbab63b80a79da4d ]
The R_RISCV_ADD32/R_RISCV_SUB32 relocations should add/subtract the
address of the symbol (without overflow check), not its contents.
Signed-off-by: Andreas Schwab <schwab@xxxxxxx>
Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/riscv/kernel/module.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/riscv/kernel/module.c
+++ b/arch/riscv/kernel/module.c
@@ -252,14 +252,14 @@ static int apply_r_riscv_align_rela(stru
static int apply_r_riscv_add32_rela(struct module *me, u32 *location,
Elf_Addr v)
{
- *(u32 *)location += (*(u32 *)v);
+ *(u32 *)location += (u32)v;
return 0;
}
static int apply_r_riscv_sub32_rela(struct module *me, u32 *location,
Elf_Addr v)
{
- *(u32 *)location -= (*(u32 *)v);
+ *(u32 *)location -= (u32)v;
return 0;
}
