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=-9.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 C29B5C433FF for ; Fri, 9 Aug 2019 03:03:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 92BC6216C8 for ; Fri, 9 Aug 2019 03:03:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405001AbfHIDDX (ORCPT ); Thu, 8 Aug 2019 23:03:23 -0400 Received: from mail-pf1-f193.google.com ([209.85.210.193]:45253 "EHLO mail-pf1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404934AbfHIDDX (ORCPT ); Thu, 8 Aug 2019 23:03:23 -0400 Received: by mail-pf1-f193.google.com with SMTP id r1so45214193pfq.12 for ; Thu, 08 Aug 2019 20:03:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=kAmSEzK1L/Io+llOkawSkizujLPqRh81CkzlWmJDPPU=; b=o0VgDbWFEmoRx92BW72GJNNHeinCL6yjYFyHSR8Ek6B8dav5TYU9McfUQp0VJf+2+I BDrk5YWzfLDROezsCt43VQ1CCHsxltX6vWMDkIAwZBLRYbUZzPdEv5buYGoV/ONs8PpU REmcLTnaF/i+TBSRwxTje8MkaLZdBFlGNccftcr5BPjYHyiqXRcgkMpWMxLsyacdbS20 xHWr1ZrZ8VJRA0hn3KE/UWvuiC+sLJ8nbrYmS1PqiozAljVLQP/sB2gy9ImEZodek3/T oDCpPtlkciJYTl+50ToWEqwMarz0m6jeM4d+h04TRimsqn9wA3leZy/ySmixBppM7v+k Gx4w== X-Gm-Message-State: APjAAAW3oLZZt6smE8QbpMVp/RWM4qK+zpgzIsB4Zmeecnxlm29zFybt O8LSuuyEvkmvz661wDp7Ov0= X-Google-Smtp-Source: APXvYqyXO6nJybmapjVSjX9lIZ9k6ByBtOz7abesx+1EvaL4RuQjbohSlTUCYfnSi+onF6KcX78tow== X-Received: by 2002:a62:be02:: with SMTP id l2mr19360419pff.63.1565319802196; Thu, 08 Aug 2019 20:03:22 -0700 (PDT) Received: from asus.hsd1.ca.comcast.net ([2601:647:4001:6530:8f02:649d:771a:4703]) by smtp.gmail.com with ESMTPSA id g2sm111787580pfi.26.2019.08.08.20.03.20 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 08 Aug 2019 20:03:20 -0700 (PDT) From: Bart Van Assche To: "Martin K . Petersen" , "James E . J . Bottomley" Cc: linux-scsi@vger.kernel.org, Bart Van Assche , Himanshu Madhani Subject: [PATCH v2 34/58] qla2xxx: Check the PCI info string output buffer size Date: Thu, 8 Aug 2019 20:01:55 -0700 Message-Id: <20190809030219.11296-35-bvanassche@acm.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190809030219.11296-1-bvanassche@acm.org> References: <20190809030219.11296-1-bvanassche@acm.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Pass the output buffer size to the code that generates a PCI info string and check the output buffer size while generating a PCI info string. Cc: Himanshu Madhani Signed-off-by: Bart Van Assche --- drivers/scsi/qla2xxx/qla_attr.c | 3 +- drivers/scsi/qla2xxx/qla_def.h | 2 +- drivers/scsi/qla2xxx/qla_gbl.h | 2 +- drivers/scsi/qla2xxx/qla_mr.c | 8 ++--- drivers/scsi/qla2xxx/qla_os.c | 59 ++++++++++++++------------------- 5 files changed, 32 insertions(+), 42 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c index e3de20918efb..e9c449ef515c 100644 --- a/drivers/scsi/qla2xxx/qla_attr.c +++ b/drivers/scsi/qla2xxx/qla_attr.c @@ -1125,7 +1125,8 @@ qla2x00_pci_info_show(struct device *dev, struct device_attribute *attr, char pci_info[30]; return scnprintf(buf, PAGE_SIZE, "%s\n", - vha->hw->isp_ops->pci_info_str(vha, pci_info)); + vha->hw->isp_ops->pci_info_str(vha, pci_info, + sizeof(pci_info))); } static ssize_t diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h index 1c6811bd5625..8c8279ef3e32 100644 --- a/drivers/scsi/qla2xxx/qla_def.h +++ b/drivers/scsi/qla2xxx/qla_def.h @@ -3112,7 +3112,7 @@ struct isp_operations { void (*update_fw_options) (struct scsi_qla_host *); int (*load_risc) (struct scsi_qla_host *, uint32_t *); - char * (*pci_info_str) (struct scsi_qla_host *, char *); + char * (*pci_info_str)(struct scsi_qla_host *, char *, size_t); char * (*fw_version_str)(struct scsi_qla_host *, char *, size_t); irq_handler_t intr_handler; diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h index fc54e7c86463..2d9664086f15 100644 --- a/drivers/scsi/qla2xxx/qla_gbl.h +++ b/drivers/scsi/qla2xxx/qla_gbl.h @@ -732,7 +732,7 @@ extern int qlafx00_initialize_adapter(struct scsi_qla_host *); extern int qlafx00_soft_reset(scsi_qla_host_t *); extern int qlafx00_chip_diag(scsi_qla_host_t *); extern void qlafx00_config_rings(struct scsi_qla_host *); -extern char *qlafx00_pci_info_str(struct scsi_qla_host *, char *); +extern char *qlafx00_pci_info_str(struct scsi_qla_host *, char *, size_t); extern char *qlafx00_fw_version_str(struct scsi_qla_host *, char *, size_t); extern irqreturn_t qlafx00_intr_handler(int, void *); extern void qlafx00_enable_intrs(struct qla_hw_data *); diff --git a/drivers/scsi/qla2xxx/qla_mr.c b/drivers/scsi/qla2xxx/qla_mr.c index 9e3f2f462a2e..759fcfecc310 100644 --- a/drivers/scsi/qla2xxx/qla_mr.c +++ b/drivers/scsi/qla2xxx/qla_mr.c @@ -688,14 +688,12 @@ qlafx00_config_rings(struct scsi_qla_host *vha) } char * -qlafx00_pci_info_str(struct scsi_qla_host *vha, char *str) +qlafx00_pci_info_str(struct scsi_qla_host *vha, char *str, size_t str_len) { struct qla_hw_data *ha = vha->hw; - if (pci_is_pcie(ha->pdev)) { - strcpy(str, "PCIe iSA"); - return str; - } + if (pci_is_pcie(ha->pdev)) + strlcpy(str, "PCIe iSA", str_len); return str; } diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c index e91681cbd75d..a247dce0cb95 100644 --- a/drivers/scsi/qla2xxx/qla_os.c +++ b/drivers/scsi/qla2xxx/qla_os.c @@ -536,80 +536,70 @@ static void qla2x00_free_queues(struct qla_hw_data *ha) } static char * -qla2x00_pci_info_str(struct scsi_qla_host *vha, char *str) +qla2x00_pci_info_str(struct scsi_qla_host *vha, char *str, size_t str_len) { struct qla_hw_data *ha = vha->hw; - static char *pci_bus_modes[] = { + static const char *const pci_bus_modes[] = { "33", "66", "100", "133", }; uint16_t pci_bus; - strcpy(str, "PCI"); pci_bus = (ha->pci_attr & (BIT_9 | BIT_10)) >> 9; if (pci_bus) { - strcat(str, "-X ("); - strcat(str, pci_bus_modes[pci_bus]); + snprintf(str, str_len, "PCI-X (%s MHz)", + pci_bus_modes[pci_bus]); } else { pci_bus = (ha->pci_attr & BIT_8) >> 8; - strcat(str, " ("); - strcat(str, pci_bus_modes[pci_bus]); + snprintf(str, str_len, "PCI (%s MHz)", pci_bus_modes[pci_bus]); } - strcat(str, " MHz)"); - return (str); + return str; } static char * -qla24xx_pci_info_str(struct scsi_qla_host *vha, char *str) +qla24xx_pci_info_str(struct scsi_qla_host *vha, char *str, size_t str_len) { - static char *pci_bus_modes[] = { "33", "66", "100", "133", }; + static const char *const pci_bus_modes[] = { + "33", "66", "100", "133", + }; struct qla_hw_data *ha = vha->hw; uint32_t pci_bus; if (pci_is_pcie(ha->pdev)) { - char lwstr[6]; uint32_t lstat, lspeed, lwidth; + const char *speed_str; pcie_capability_read_dword(ha->pdev, PCI_EXP_LNKCAP, &lstat); lspeed = lstat & PCI_EXP_LNKCAP_SLS; lwidth = (lstat & PCI_EXP_LNKCAP_MLW) >> 4; - strcpy(str, "PCIe ("); switch (lspeed) { case 1: - strcat(str, "2.5GT/s "); + speed_str = "2.5GT/s"; break; case 2: - strcat(str, "5.0GT/s "); + speed_str = "5.0GT/s"; break; case 3: - strcat(str, "8.0GT/s "); + speed_str = "8.0GT/s"; break; default: - strcat(str, " "); + speed_str = ""; break; } - snprintf(lwstr, sizeof(lwstr), "x%d)", lwidth); - strcat(str, lwstr); + snprintf(str, str_len, "PCIe (%s x%d)", speed_str, lwidth); return str; } - strcpy(str, "PCI"); pci_bus = (ha->pci_attr & CSRX_PCIX_BUS_MODE_MASK) >> 8; - if (pci_bus == 0 || pci_bus == 8) { - strcat(str, " ("); - strcat(str, pci_bus_modes[pci_bus >> 3]); - } else { - strcat(str, "-X "); - if (pci_bus & BIT_2) - strcat(str, "Mode 2"); - else - strcat(str, "Mode 1"); - strcat(str, " ("); - strcat(str, pci_bus_modes[pci_bus & ~BIT_2]); - } - strcat(str, " MHz)"); + if (pci_bus == 0 || pci_bus == 8) + snprintf(str, str_len, "PCI (%s MHz)", + pci_bus_modes[pci_bus >> 3]); + else + snprintf(str, str_len, "PCI-X Mode %d (%s MHz)", + pci_bus & 4 ? 2 : 1, + pci_bus_modes[pci_bus & 3]); return str; } @@ -3460,7 +3450,8 @@ qla2x00_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) "QLogic %s - %s.\n", ha->model_number, ha->model_desc); ql_log(ql_log_info, base_vha, 0x00fc, "ISP%04X: %s @ %s hdma%c host#=%ld fw=%s.\n", - pdev->device, ha->isp_ops->pci_info_str(base_vha, pci_info), + pdev->device, ha->isp_ops->pci_info_str(base_vha, pci_info, + sizeof(pci_info)), pci_name(pdev), ha->flags.enable_64bit_addressing ? '+' : '-', base_vha->host_no, ha->isp_ops->fw_version_str(base_vha, fw_str, sizeof(fw_str))); -- 2.22.0