From 1e3c8e7b3465fb8a49d3623d2d0f449c0b5b48f3 Mon Sep 17 00:00:00 2001 From: Christian Borntraeger Date: Tue, 11 Aug 2026 17:37:37 +0200 Subject: [PATCH] KVM: s390: pv: Fix rc/rrc offset for PVM_DUMP The rc/rrc value is copied to the cmd location of the cmd in the kvm_pv_cmd structure. Fix the offset. Fixes: 8aba09588d2a ("KVM: s390: Add CPU dump functionality") Cc: stable@vger.kernel.org Signed-off-by: Christian Borntraeger Reviewed-by: Claudio Imbrenda Signed-off-by: Claudio Imbrenda Message-ID: <20260811153738.206885-4-borntraeger@linux.ibm.com> --- arch/s390/kvm/kvm-s390.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index a3e55c613243..ed4190128812 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -5736,7 +5736,7 @@ long kvm_arch_vcpu_ioctl(struct file *filp, r = kvm_s390_handle_pv_vcpu_dump(vcpu, &cmd); /* Always copy over UV rc / rrc data */ - if (copy_to_user((__u8 __user *)argp, &cmd.rc, + if (copy_to_user(argp + offsetof(struct kvm_pv_cmd, rc), &cmd.rc, sizeof(cmd.rc) + sizeof(cmd.rrc))) r = -EFAULT; break;