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| author |   David Hildenbrand <dahi@linux.vnet.ibm.com> | 2016-09-02 12:33:49 +0200 |
|---|---|---|
| committer |   Cornelia Huck <cornelia.huck@de.ibm.com> | 2016-09-05 13:48:50 +0200 |
| commit | 4d21cef3ea00ba3ac508eb61fb8db70e3e31df67 (patch) | |
| tree | 29f00dd2113996d4764b655e5bc245f3d7da7b20 /arch/s390/kvm | |
| parent | Merge tag 'kvm-s390-master-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-master (diff) | |
| download | linux-dev-4d21cef3ea00ba3ac508eb61fb8db70e3e31df67.tar.xz linux-dev-4d21cef3ea00ba3ac508eb61fb8db70e3e31df67.zip | |
KVM: s390: vsie: fix riccbd
We store the address of riccbd at the wrong location, overwriting
gvrd. This means that our nested guest will not be able to use runtime
instrumentation. Also, a memory leak, if our KVM guest actually sets gvrd.
Not noticed until now, as KVM guests never make use of gvrd and runtime
instrumentation wasn't completely tested yet.
Reported-by: Fan Zhang <zhangfan@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Diffstat (limited to 'arch/s390/kvm')
| -rw-r--r-- | arch/s390/kvm/vsie.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index c106488b4137..d8673e243f13 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -584,7 +584,7 @@ static int pin_blocks(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) /* Validity 0x0044 will be checked by SIE */ if (rc) goto unpin; - scb_s->gvrd = hpa; + scb_s->riccbd = hpa; } return 0; unpin: |