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Mon, 24 Jan 2022 22:08:17 +0000 (GMT) Received: from b03ledav004.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D3FFC7807B; Mon, 24 Jan 2022 22:08:15 +0000 (GMT) Received: from farosas.linux.ibm.com.com (unknown [9.163.24.67]) by b03ledav004.gho.boulder.ibm.com (Postfix) with ESMTP; Mon, 24 Jan 2022 22:08:15 +0000 (GMT) From: Fabiano Rosas To: kvm-ppc@vger.kernel.org Subject: [PATCH v2 3/4] KVM: PPC: Book3S HV: Free allocated memory if module init fails Date: Mon, 24 Jan 2022 19:08:02 -0300 Message-Id: <20220124220803.1011673-4-farosas@linux.ibm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220124220803.1011673-1-farosas@linux.ibm.com> References: <20220124220803.1011673-1-farosas@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: gwMRTZ-qyP_bKQxTFGMxukPgipz8w1B6 X-Proofpoint-GUID: oXeNi09-mwkZsJR_qz8UZoA6PDu4lgv- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.816,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2022-01-24_09,2022-01-24_02,2021-12-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 bulkscore=0 spamscore=0 mlxscore=0 clxscore=1015 lowpriorityscore=0 adultscore=0 phishscore=0 mlxlogscore=999 suspectscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2201110000 definitions=main-2201240143 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, npiggin@gmail.com, aik@ozlabs.ru Errors-To: linuxppc-dev-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" The module's exit function is not called when the init fails, we need to do cleanup before returning. Signed-off-by: Fabiano Rosas Reviewed-by: Nicholas Piggin --- arch/powerpc/kvm/book3s_hv.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index b9aace212599..87a49651a402 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -6104,7 +6104,7 @@ static int kvmppc_book3s_init_hv(void) if (!cpu_has_feature(CPU_FTR_ARCH_300)) { r = kvm_init_subcore_bitmap(); if (r) - return r; + goto err; } /* @@ -6120,7 +6120,8 @@ static int kvmppc_book3s_init_hv(void) np = of_find_compatible_node(NULL, NULL, "ibm,opal-intc"); if (!np) { pr_err("KVM-HV: Cannot determine method for accessing XICS\n"); - return -ENODEV; + r = -ENODEV; + goto err; } /* presence of intc confirmed - node can be dropped again */ of_node_put(np); @@ -6133,12 +6134,12 @@ static int kvmppc_book3s_init_hv(void) r = kvmppc_mmu_hv_init(); if (r) - return r; + goto err; if (kvmppc_radix_possible()) { r = kvmppc_radix_init(); if (r) - return r; + goto err; } r = kvmppc_uvmem_init(); @@ -6151,6 +6152,12 @@ static int kvmppc_book3s_init_hv(void) kvmppc_hv_ops = &kvm_ops_hv; return 0; + +err: + kvmhv_nested_exit(); + kvmppc_radix_exit(); + + return r; } static void kvmppc_book3s_exit_hv(void)