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=-19.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 D1714C4338F for ; Tue, 24 Aug 2021 17:26:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B6BC261247 for ; Tue, 24 Aug 2021 17:26:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241312AbhHXR1b (ORCPT ); Tue, 24 Aug 2021 13:27:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:59084 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241134AbhHXRYS (ORCPT ); Tue, 24 Aug 2021 13:24:18 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id C61E9615A7; Tue, 24 Aug 2021 17:03:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1629824636; bh=XEx3BsTshcve17FoVWUVPdPLUyF639kNmMP5bNKnxeo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Aacihk6VUIYcwGFdHg5XXeUYC1PDl5Wa4TDUtTnGLdGpgEEf1gi6eKl3CMgljHgVd 9IbAWPIUh61rhcsS1KcgGBh/Nuc22R6LIpIkgFEUUQ/q1BMTalaS6jDVfAOGL3DvYf eHaGYFl0uBY7B1BAooilimc7Pj5+EssF2xPYYEmXhRW8oTzW6gJncny5GHA9NERZWO ORxr3iNxwmN0Rf2+2LAqTa6s2hyu9dNVUXWxZOSWw0ac1LAf0Wejdi3VfBwvbtmfLx ldsCwtQ9f6gp2RZMhXi4XWd1ZyBtahyBqH0I0lXSm1CIFIoFkO19IRdqIfoshNxl73 JDNIFkg8XNHnQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Dinghao Liu , Jakub Kicinski , Sasha Levin Subject: [PATCH 4.19 67/84] net: qlcnic: add missed unlock in qlcnic_83xx_flash_read32 Date: Tue, 24 Aug 2021 13:02:33 -0400 Message-Id: <20210824170250.710392-68-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210824170250.710392-1-sashal@kernel.org> References: <20210824170250.710392-1-sashal@kernel.org> MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.205-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-4.19.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 4.19.205-rc1 X-KernelTest-Deadline: 2021-08-26T17:02+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dinghao Liu [ Upstream commit 0a298d133893c72c96e2156ed7cb0f0c4a306a3e ] qlcnic_83xx_unlock_flash() is called on all paths after we call qlcnic_83xx_lock_flash(), except for one error path on failure of QLCRD32(), which may cause a deadlock. This bug is suggested by a static analysis tool, please advise. Fixes: 81d0aeb0a4fff ("qlcnic: flash template based firmware reset recovery") Signed-off-by: Dinghao Liu Link: https://lore.kernel.org/r/20210816131405.24024-1-dinghao.liu@zju.edu.cn Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin --- drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c index 6ed8294f7df8..a15845e511b2 100644 --- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c +++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c @@ -3158,8 +3158,10 @@ int qlcnic_83xx_flash_read32(struct qlcnic_adapter *adapter, u32 flash_addr, indirect_addr = QLC_83XX_FLASH_DIRECT_DATA(addr); ret = QLCRD32(adapter, indirect_addr, &err); - if (err == -EIO) + if (err == -EIO) { + qlcnic_83xx_unlock_flash(adapter); return err; + } word = ret; *(u32 *)p_data = word; -- 2.30.2