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 3CA822594BD; Sat, 12 Sep 2026 14:01:29 +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=1789221691; cv=none; b=iZ1n4p6aQ7z3tp4qrlBj1ShKGYYZmTGOSbr9H7WI0QnzvjCevTD0bJMHZ77g3K1W1m8OWDJ9VdrI3IDtrSRa5k8pX7goZuf5FTr5H4HxAdyR1fFlPGdvLMU+kv9OQpvZu827Ocv+h2l5XpwE6tXDK2GavYbXngVusXfyHKxeWDY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789221691; c=relaxed/simple; bh=BsMhMNP0eZabs17+GjbfjfdMLn1v8+nXGOPN/fpwvkc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NCjwEDErO4hffBkxyTJCFzBWBTnJFNyxIy5nyAziEYVE7oCZ+LU6uO2tpQDuYAVl7TDPLtynqQAP37Wr257xBd0QEnKkU0s7c92i6XGmQhyURD9LzEls/ye864d2LuTdyLIMwD/ah16LYyVx1CEdqJBU2X9PYARhCx1JtLeQP3A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=kFRP7YZc; 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="kFRP7YZc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9A34E1F00898; Sat, 12 Sep 2026 14:01:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789221689; bh=noNtOUTtzifc2aQQITzLdanpDYO0R4AaxoLMsbDSnyA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=kFRP7YZcHDQ8NCu8T3GBkgTNyUH3tsJ1ApEGUIZN/6SFUwbpkjTyrBcVYx2XMNLZL 3Sk7VsZTUGAqkwQxUvBALBSrwLtgGKLi5+mCSPKpAm4b04GuWvb/hqRgkOpSiWg25A aA/hhG/0H4AFfkS3mOvOrbdHj5madZpKY/0DQFiw= 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 6.6 0432/1424] KVM: s390: Fix memory leak in guest debug handling Date: Sat, 12 Sep 2026 08:47:44 +0200 Message-ID: <20260912065616.958193199@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.279695368@linuxfoundation.org> References: <20260912065607.279695368@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 6.6-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 @@ -271,6 +271,7 @@ 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);