When copy_from_user() fails, this code returns the number of bytes
remaining instead of a negative error code. The positive number is
returned to the user but otherwise it is harmless.
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
I am not able to compile this.
diff --git a/arch/s390/kvm/guestdbg.c b/arch/s390/kvm/guestdbg.c
index 757ccef..3e8d409 100644
--- a/arch/s390/kvm/guestdbg.c
+++ b/arch/s390/kvm/guestdbg.c
@@ -223,9 +223,10 @@ int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
goto error;
}
- ret = copy_from_user(bp_data, dbg->arch.hw_bp, size);
- if (ret)
+ if (copy_from_user(bp_data, dbg->arch.hw_bp, size)) {
+ ret = -EFAULT;
goto error;
+ }
for (i = 0; i < dbg->arch.nr_hw_bp; i++) {
switch (bp_data[i].type) {
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
