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 0C0D732D43C; Sat, 12 Sep 2026 18:27:48 +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=1789237670; cv=none; b=s4X2bSPrzdnGn4MX1Y2IXUyzoc5HuiDw4cxE1gmB1OxAyoTzmlKqeakql1m1r2o7rGcBhfg5d8lN6N4Uu4mQTbJG2Q6lPbuQZDTV8kVniP9QKGt4HYFIQfRld/E1JRfxwJoM+xvfSklJxOgOl3wf5VfM/iO0a1mwTP/IdNgZIkw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789237670; c=relaxed/simple; bh=5XJeeJpBJz68B4sYt+mFrtg92SYpAKuNqR9kONiCeUw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Km5wZWdVVUVZgthXMZXzIKdVFIQvJlHL1Oz8pmeOrdCtKZb9uqlVJOi3fkPFDN5Vaz4x9cgIViLMf7kWoRy5RHEaYUrEm1E2xXqwpIH2YCCzkTVO+vBUJpP1JlZmwqZIrxt2CZtQE/rT+CtIG2FNArnS3TVm0CpTHNLHjc7Ury0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=YBvI3NmD; 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="YBvI3NmD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A53B71F000FF; Sat, 12 Sep 2026 18:27:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789237668; bh=vT0UfSJMpVfKQvSdWqi8BHAMsVgckBNjKlULb8uRRGY=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=YBvI3NmDV6g/HMYr++v/13gXxrtBqFFQEQeRS2whrAYllXzk/ahhSwz415C0SFP7b evkZVb5Xk3Gc2gg4bZ1WPSwFWYBuamN3DzE4VvJ3HxTgsL3vSb009vLZGnx2lxHkba EbiQDO/TzMjMrxfVPFjNZ9PhrbU88jDK2gIdpg1I= 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 5.15 303/935] KVM: s390: Fix memory leak in guest debug handling Date: Sat, 12 Sep 2026 08:55:33 +0200 Message-ID: <20260912065533.759887058@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@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 5.15-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);