From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,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 CC821C43381 for ; Mon, 11 Mar 2019 19:56:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 92DA0214AE for ; Mon, 11 Mar 2019 19:56:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552334208; bh=FNkRr7RwNCN2Na6l1UKtQEWUsA50uoadcO6ZRkI5E/4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZHwcCL8INxdRbpZWNhA/q0g1l0/5fZ48O/aqwhVG8+p2zBIhkrTe6SBBZlfhnAnnb mj0FHQxUt5yEzo4BtttaS01vhKbTv6n5UaC618Er/x8ska+XsFjm7ZNQ7QlRqfKIAE /1GokG2nvTavcVo5I4a2EpwYdNG1M/t6YtJdnsIA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728876AbfCKT4r (ORCPT ); Mon, 11 Mar 2019 15:56:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:34020 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728814AbfCKT4n (ORCPT ); Mon, 11 Mar 2019 15:56:43 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8F204214D8; Mon, 11 Mar 2019 19:56:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1552334202; bh=FNkRr7RwNCN2Na6l1UKtQEWUsA50uoadcO6ZRkI5E/4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WIAHJdOMr7Q+wm5Y+zNkRNFhtKor6CpWihsC1ryiDuKxDvgTZv4Z2KgXbVcxwexrf BTvEjVmlbW/z33TroSE3ZWiMB29uVBtx9YWu504lO3fmQxZZQV9/huU4ARmAYzOFCR FlC8EQaETwk4AAjGxiZ6GcW6cMkpbjMeMsg1v3VE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Bill Kuzeja , Bill Kuzeja , "Martin K . Petersen" , Sasha Levin , linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 4.20 43/52] scsi: qla2xxx: Fix panic from use after free in qla2x00_async_tm_cmd Date: Mon, 11 Mar 2019 15:55:07 -0400 Message-Id: <20190311195516.137772-43-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190311195516.137772-1-sashal@kernel.org> References: <20190311195516.137772-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Bill Kuzeja [ Upstream commit 388a49959ee4e4e99f160241d9599efa62cd4299 ] In qla2x00_async_tm_cmd, we reference off sp after it has been freed. This caused a panic on a system running a slub debug kernel. Since fcport is passed in anyways, just use that instead. Signed-off-by: Bill Kuzeja Acked-by: Giridhar Malavali Acked-by: Himanshu Madhani Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/qla2xxx/qla_init.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c index eb59c796a795..1986b3347a01 100644 --- a/drivers/scsi/qla2xxx/qla_init.c +++ b/drivers/scsi/qla2xxx/qla_init.c @@ -1787,13 +1787,13 @@ qla2x00_async_tm_cmd(fc_port_t *fcport, uint32_t flags, uint32_t lun, /* Issue Marker IOCB */ qla2x00_marker(vha, vha->hw->req_q_map[0], - vha->hw->rsp_q_map[0], sp->fcport->loop_id, lun, + vha->hw->rsp_q_map[0], fcport->loop_id, lun, flags == TCF_LUN_RESET ? MK_SYNC_ID_LUN : MK_SYNC_ID); } done_free_sp: sp->free(sp); - sp->fcport->flags &= ~FCF_ASYNC_SENT; + fcport->flags &= ~FCF_ASYNC_SENT; done: return rval; } -- 2.19.1