From f6a3b168e56abe094b5c93dbafc2f0a0bf64e702 Mon Sep 17 00:00:00 2001 From: Markus Elfring Date: Sun, 22 Jan 2017 11:30:21 +0100 Subject: [PATCH] KVM: Return directly after a failed copy_from_user() in kvm_vm_compat_ioctl() * Return directly after a call of the function "copy_from_user" failed in a case block. This issue was detected by using the Coccinelle software. * Delete the jump label "out" which became unnecessary with this refactoring. Signed-off-by: Markus Elfring Signed-off-by: Paolo Bonzini --- virt/kvm/kvm_main.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 263a80513ad9..bd131c539c1e 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -3148,10 +3148,9 @@ static long kvm_vm_compat_ioctl(struct file *filp, struct compat_kvm_dirty_log compat_log; struct kvm_dirty_log log; - r = -EFAULT; if (copy_from_user(&compat_log, (void __user *)arg, sizeof(compat_log))) - goto out; + return -EFAULT; log.slot = compat_log.slot; log.padding1 = compat_log.padding1; log.padding2 = compat_log.padding2; @@ -3163,8 +3162,6 @@ static long kvm_vm_compat_ioctl(struct file *filp, default: r = kvm_vm_ioctl(filp, ioctl, arg); } - -out: return r; } #endif -- 2.20.1