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authorMarkus Elfring <elfring@users.sourceforge.net>2017-11-21 13:40:17 +0100
committerPaolo Bonzini <pbonzini@redhat.com>2017-12-14 09:26:44 +0100
commit78588335065967993618106c664fe62d2e271435 (patch)
treebee6468b9129edaaab0de159608662990b7c4e7d /virt
parent52797bf9a875c4a30f846196386684e646e08a91 (diff)
downloadlinux-78588335065967993618106c664fe62d2e271435.tar.bz2
kvm_main: Use common error handling code in kvm_dev_ioctl_create_vm()
Add a jump target so that a bit of exception handling can be better reused at the end of this function. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c21
1 files changed, 11 insertions, 10 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 210bf820385a..bc092e3d1d73 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3186,21 +3186,18 @@ static int kvm_dev_ioctl_create_vm(unsigned long type)
return PTR_ERR(kvm);
#ifdef CONFIG_KVM_MMIO
r = kvm_coalesced_mmio_init(kvm);
- if (r < 0) {
- kvm_put_kvm(kvm);
- return r;
- }
+ if (r < 0)
+ goto put_kvm;
#endif
r = get_unused_fd_flags(O_CLOEXEC);
- if (r < 0) {
- kvm_put_kvm(kvm);
- return r;
- }
+ if (r < 0)
+ goto put_kvm;
+
file = anon_inode_getfile("kvm-vm", &kvm_vm_fops, kvm, O_RDWR);
if (IS_ERR(file)) {
put_unused_fd(r);
- kvm_put_kvm(kvm);
- return PTR_ERR(file);
+ r = PTR_ERR(file);
+ goto put_kvm;
}
/*
@@ -3218,6 +3215,10 @@ static int kvm_dev_ioctl_create_vm(unsigned long type)
fd_install(r, file);
return r;
+
+put_kvm:
+ kvm_put_kvm(kvm);
+ return r;
}
static long kvm_dev_ioctl(struct file *filp,