From: Yufeng Wang Add WARN_ON check before accessing cntx->vector.datap in kvm_riscv_vcpu_vreg_addr() to detect potential null pointer dereferences early, consistent with the pattern used in kvm_riscv_vcpu_vector_reset(). This helps catch initialization issues where vector context allocation may have failed. Signed-off-by: Yufeng Wang --- arch/riscv/kvm/vcpu_vector.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/kvm/vcpu_vector.c b/arch/riscv/kvm/vcpu_vector.c index 46fbf48f2503..e989cb9f1ac4 100644 --- a/arch/riscv/kvm/vcpu_vector.c +++ b/arch/riscv/kvm/vcpu_vector.c @@ -129,6 +129,7 @@ static int kvm_riscv_vcpu_vreg_addr(struct kvm_vcpu *vcpu, } else if (reg_num <= KVM_REG_RISCV_VECTOR_REG(31)) { if (reg_size != vlenb) return -EINVAL; + WARN_ON(!cntx->vector.datap); *reg_addr = cntx->vector.datap + (reg_num - KVM_REG_RISCV_VECTOR_REG(0)) * vlenb; } else { -- 2.34.1