diff options
| author | Will Deacon <will.deacon@arm.com> | 2014-08-26 16:13:23 +0200 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2014-08-27 22:49:45 +0200 |
| commit | bd218bce92d3868ba4fe5e9e3eb8199d2aa614af (patch) | |
| tree | 18c3956239fc631afa20162018c40cf2c97e9f12 /arch/arm/kvm | |
| parent | KVM: ARM/arm64: avoid returning negative error code as bool (diff) | |
| download | linux-bd218bce92d3868ba4fe5e9e3eb8199d2aa614af.tar.xz linux-bd218bce92d3868ba4fe5e9e3eb8199d2aa614af.zip | |
KVM: ARM/arm64: return -EFAULT if copy_from_user fails in set_timer_reg
We currently return the number of bytes not copied if set_timer_reg
fails, which is almost certainly not what userspace would like.
This patch returns -EFAULT instead.
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm/kvm')
| -rw-r--r-- | arch/arm/kvm/guest.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/kvm/guest.c b/arch/arm/kvm/guest.c index 813e49258690..cc0b78769bd8 100644 --- a/arch/arm/kvm/guest.c +++ b/arch/arm/kvm/guest.c @@ -163,7 +163,7 @@ static int set_timer_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) ret = copy_from_user(&val, uaddr, KVM_REG_SIZE(reg->id)); if (ret != 0) - return ret; + return -EFAULT; return kvm_arm_timer_set_reg(vcpu, reg->id, val); } |