From patchwork Wed Sep 8 07:28:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nilesh Javali X-Patchwork-Id: 508201 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6DF48C433EF for ; Wed, 8 Sep 2021 07:30:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5D90961164 for ; Wed, 8 Sep 2021 07:30:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350621AbhIHHbp (ORCPT ); Wed, 8 Sep 2021 03:31:45 -0400 Received: from mx0b-0016f401.pphosted.com ([67.231.156.173]:49448 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350281AbhIHHbh (ORCPT ); Wed, 8 Sep 2021 03:31:37 -0400 Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.16.1.2/8.16.1.2) with SMTP id 1883JW4e018275; Wed, 8 Sep 2021 00:30:23 -0700 Received: from dc5-exch01.marvell.com ([199.233.59.181]) by mx0b-0016f401.pphosted.com with ESMTP id 3axcmjaeaw-5 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Wed, 08 Sep 2021 00:30:23 -0700 Received: from DC5-EXCH02.marvell.com (10.69.176.39) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Wed, 8 Sep 2021 00:30:20 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server id 15.0.1497.18 via Frontend Transport; Wed, 8 Sep 2021 00:30:20 -0700 Received: from dut1171.mv.qlogic.com (unknown [10.112.88.18]) by maili.marvell.com (Postfix) with ESMTP id 343C13F70AE; Wed, 8 Sep 2021 00:30:20 -0700 (PDT) Received: from dut1171.mv.qlogic.com (localhost [127.0.0.1]) by dut1171.mv.qlogic.com (8.14.7/8.14.7) with ESMTP id 1887UKFH010154; Wed, 8 Sep 2021 00:30:20 -0700 Received: (from root@localhost) by dut1171.mv.qlogic.com (8.14.7/8.14.7/Submit) id 1887UKUj010153; Wed, 8 Sep 2021 00:30:20 -0700 From: Nilesh Javali To: , CC: , , , Subject: [PATCH 09/10] qla2xxx: Fix use after free in eh_abort path Date: Wed, 8 Sep 2021 00:28:45 -0700 Message-ID: <20210908072846.10011-10-njavali@marvell.com> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20210908072846.10011-1-njavali@marvell.com> References: <20210908072846.10011-1-njavali@marvell.com> MIME-Version: 1.0 X-Proofpoint-GUID: FTmLUtrwRpHqzgv5uHB0oGINzBr5JCkx X-Proofpoint-ORIG-GUID: FTmLUtrwRpHqzgv5uHB0oGINzBr5JCkx X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.182.1, Aquarius:18.0.790, Hydra:6.0.391, FMLib:17.0.607.475 definitions=2021-09-08_02,2021-09-07_02,2020-04-07_01 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Quinn Tran In eh_abort path, driver prematurely exit the call to upper layer. This patch would check for command is aborted / completed by FW before exiting the call. 9 [ffff8b1ebf803c00] page_fault at ffffffffb0389778 [exception RIP: qla2x00_status_entry+0x48d] RIP: ffffffffc04fa62d RSP: ffff8b1ebf803cb0 RFLAGS: 00010082 RAX: 00000000ffffffff RBX: 00000000000e0000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 00000000000013d8 RDI: fffff3253db78440 RBP: ffff8b1ebf803dd0 R8: ffff8b1ebcd9b0c0 R9: 0000000000000000 R10: ffff8b1e38a30808 R11: 0000000000001000 R12: 00000000000003e9 R13: 0000000000000000 R14: ffff8b1ebcd9d740 R15: 0000000000000028 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 10 [ffff8b1ebf803cb0] enqueue_entity at ffffffffafce708f 11 [ffff8b1ebf803d00] enqueue_task_fair at ffffffffafce7b88 12 [ffff8b1ebf803dd8] qla24xx_process_response_queue at ffffffffc04fc9a6 [qla2xxx] 13 [ffff8b1ebf803e78] qla24xx_msix_rsp_q at ffffffffc04ff01b [qla2xxx] 14 [ffff8b1ebf803eb0] __handle_irq_event_percpu at ffffffffafd50714 Fixes: f45bca8c5052 ("scsi: qla2xxx: Fix double scsi_done for abort path") Signed-off-by: David Jeffery Signed-off-by: Laurence Oberman Signed-off-by: Quinn Tran Signed-off-by: Nilesh Javali --- drivers/scsi/qla2xxx/qla_os.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index 0454f79a8047..0f3048723965 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -1258,6 +1258,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd) uint32_t ratov_j; struct qla_qpair *qpair; unsigned long flags; + int fast_fail_status = SUCCESS; if (qla2x00_isp_reg_stat(ha)) { ql_log(ql_log_info, vha, 0x8042, @@ -1266,9 +1267,10 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd) return FAILED; } + /* Save any FAST_IO_FAIL value to return later if abort succeeds */ ret = fc_block_scsi_eh(cmd); if (ret != 0) - return ret; + fast_fail_status = ret; sp = scsi_cmd_priv(cmd); qpair = sp->qpair; @@ -1276,7 +1278,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd) vha->cmd_timeout_cnt++; if ((sp->fcport && sp->fcport->deleted) || !qpair) - return SUCCESS; + return fast_fail_status != SUCCESS ? fast_fail_status : FAILED; spin_lock_irqsave(qpair->qp_lock_ptr, flags); sp->comp = ∁ @@ -1311,7 +1313,7 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd) __func__, ha->r_a_tov/10); ret = FAILED; } else { - ret = SUCCESS; + ret = fast_fail_status; } break; default: