diff options
| author | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2026-03-26 14:17:16 +0100 |
|---|---|---|
| committer | Claudio Imbrenda <imbrenda@linux.ibm.com> | 2026-03-26 16:12:25 +0100 |
| commit | 0ec456b8a53d78644af7363a225c182494c1dacf (patch) | |
| tree | 143ab4d161168ea80595e9363d557db08b218e25 /arch | |
| parent | fd7bc612cf27f7c98764e86e2fba3511610fff20 (diff) | |
KVM: s390: vsie: Fix refcount overflow for shadow gmaps
In most cases gmap_put() was not called when it should have.
Add the missing gmap_put() in vsie_run().
Fixes: e38c884df921 ("KVM: s390: Switch to new gmap")
Reviewed-by: Steffen Eiden <seiden@linux.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kvm/vsie.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/kvm/vsie.c b/arch/s390/kvm/vsie.c index 0330829b4046..72895dddc39a 100644 --- a/arch/s390/kvm/vsie.c +++ b/arch/s390/kvm/vsie.c @@ -1328,7 +1328,7 @@ static void unregister_shadow_scb(struct kvm_vcpu *vcpu) static int vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) { struct kvm_s390_sie_block *scb_s = &vsie_page->scb_s; - struct gmap *sg; + struct gmap *sg = NULL; int rc = 0; while (1) { @@ -1368,6 +1368,8 @@ static int vsie_run(struct kvm_vcpu *vcpu, struct vsie_page *vsie_page) sg = gmap_put(sg); cond_resched(); } + if (sg) + sg = gmap_put(sg); if (rc == -EFAULT) { /* |