From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2E668492E2A; Wed, 9 Sep 2026 14:03:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788962606; cv=none; b=iZtcjgkC4yOfrl0d2fztbikamfB/A9ROWMvkH5uW+pcbZ9G66oroJuANCd+DSZqlRmbqphzGkwrxqDyFcCICx4V5eo6qskBQXa+58+f5yR4biXj/dpr/jc2EW8e6MAoeIpVpP/JxZInrbwVWrsqOM4wzUwFhJNdtFeph6b0lYCI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788962606; c=relaxed/simple; bh=diPHB0PXiKd7bssCNZfOyPMBIzH66zMe3yDyiPQAjgI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rFSEGsi/XXnzU2tuoEv7cHcuPyFN6Z89ctJ8WaVivcGK9jOYrbyJ3H4qLLRqll7WcrOfAAtP3iZwAI5O4s9LuN2bs4WDOUZPqI2IOAdzliol0HGoj22BVadeUUokTZhkGrMMP0VW+/4/2oh6CelhUzmKWFpTnrqfHGly2KCdn40= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=HJfZOUxz; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="HJfZOUxz" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8625C1F00A3A; Wed, 9 Sep 2026 14:03:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788962605; bh=IbHMNQb6fFdgnpvKzN3AxCXLXgEY3DoL85ZMcDYQxmo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=HJfZOUxz0YO+70OqxuWb384Rb7Eh8f7lRcfLvWcC7OT/KWi1JfLeeAI5w8njQg1nQ 7zfO2f+gWuw1ySr0cCSZfUcHrmi1U7Kv/LqX7qgKuyzRsfXUL6YUFSjfLKWmZEP9Ft AWntQ2msMyHFZSgJFEDXHltKEyYIcSJjt5u9bfBc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Christian Borntraeger , Matthew Rosato , Claudio Imbrenda Subject: [PATCH 7.2 304/556] KVM: s390: Fix memory leak in guest debug handling Date: Wed, 9 Sep 2026 15:39:44 +0200 Message-ID: <20260909134241.374740661@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260909134230.441546314@linuxfoundation.org> References: <20260909134230.441546314@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Christian Borntraeger commit 121ea1de927c8b9bfdf53c31cad27b86d5de0293 upstream. bp_data is freed only for the error case by kfree(bp_data). Every successful KVM_SET_GUEST_DEBUG will leak bp_data. Fixes: 27291e2165b6 ("KVM: s390: hardware support for guest debugging") Cc: stable@vger.kernel.org Signed-off-by: Christian Borntraeger Reviewed-by: Matthew Rosato Reviewed-by: Claudio Imbrenda Signed-off-by: Claudio Imbrenda Message-ID: <20260805110455.7200-5-borntraeger@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman --- arch/s390/kvm/guestdbg.c | 1 + 1 file changed, 1 insertion(+) --- a/arch/s390/kvm/guestdbg.c +++ b/arch/s390/kvm/guestdbg.c @@ -267,6 +267,7 @@ int kvm_s390_import_bp_data(struct kvm_v vcpu->arch.guestdbg.hw_bp_info = bp_info; vcpu->arch.guestdbg.nr_hw_wp = nr_wp; vcpu->arch.guestdbg.hw_wp_info = wp_info; + kfree(bp_data); return 0; error: kfree(bp_data);