linux-kernel - Re: [PATCH v4 2/3] PCI/AER: Print UNCOR

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <0a93b8bd-c50b-4ffd-8d6c-ba3b20b601b5@linux.intel.com>
Date: Thu, 13 Jun 2024 14:28:55 -0700
From: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>
To: Zhenzhong Duan <zhenzhong.duan@...el.com>, linux-pci@...r.kernel.org
Cc: linuxppc-dev@...ts.ozlabs.org, linux-acpi@...r.kernel.org,
 rafael@...nel.org, lenb@...nel.org, james.morse@....com,
 tony.luck@...el.com, bp@...en8.de, dave@...olabs.net,
 jonathan.cameron@...wei.com, dave.jiang@...el.com,
 alison.schofield@...el.com, vishal.l.verma@...el.com, ira.weiny@...el.com,
 bhelgaas@...gle.com, helgaas@...nel.org, mahesh@...ux.ibm.com,
 oohall@...il.com, linmiaohe@...wei.com, shiju.jose@...wei.com,
 adam.c.preble@...el.com, lukas@...ner.de,
 Smita.KoralahalliChannabasappa@....com, rrichter@....com,
 linux-cxl@...r.kernel.org, linux-edac@...r.kernel.org,
 linux-kernel@...r.kernel.org, erwin.tsaur@...el.com,
 sathyanarayanan.kuppuswamy@...el.com, dan.j.williams@...el.com,
 feiting.wanyan@...el.com, yudong.wang@...el.com, chao.p.peng@...el.com,
 qingshun.wang@...ux.intel.com
Subject: Re: [PATCH v4 2/3] PCI/AER: Print UNCOR_STATUS bits that might be
 ANFE


On 5/9/24 1:48 AM, Zhenzhong Duan wrote:
> When an Advisory Non-Fatal error(ANFE) triggers, both correctable error(CE)
> status and ANFE related uncorrectable error(UE) status will be printed:
>
>   AER: Correctable error message received from 0000:b7:02.0
>   PCIe Bus Error: severity=Correctable, type=Transaction Layer, (Receiver ID)
>     device [8086:0db0] error status/mask=00002000/00000000
>      [13] NonFatalErr
>     Uncorrectable errors that may cause Advisory Non-Fatal:
>      [18] TLP
>
> Tested-by: Yudong Wang <yudong.wang@...el.com>
> Co-developed-by: "Wang, Qingshun" <qingshun.wang@...ux.intel.com>
> Signed-off-by: "Wang, Qingshun" <qingshun.wang@...ux.intel.com>
> Signed-off-by: Zhenzhong Duan <zhenzhong.duan@...el.com>
> ---

LGTM

Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@...ux.intel.com>

>  drivers/pci/pcie/aer.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
>
> diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
> index f2839b51321a..ed435f09ac27 100644
> --- a/drivers/pci/pcie/aer.c
> +++ b/drivers/pci/pcie/aer.c
> @@ -681,6 +681,7 @@ static void __aer_print_error(struct pci_dev *dev,
>  {
>  	const char **strings;
>  	unsigned long status = info->status & ~info->mask;
> +	unsigned long anfe_status = info->anfe_status;
>  	const char *level, *errmsg;
>  	int i;
>  
> @@ -701,6 +702,20 @@ static void __aer_print_error(struct pci_dev *dev,
>  				info->first_error == i ? " (First)" : "");
>  	}
>  	pci_dev_aer_stats_incr(dev, info);
> +
> +	if (!anfe_status)
> +		return;
> +
> +	strings = aer_uncorrectable_error_string;
> +	pci_printk(level, dev, "Uncorrectable errors that may cause Advisory Non-Fatal:\n");
> +
> +	for_each_set_bit(i, &anfe_status, 32) {
> +		errmsg = strings[i];
> +		if (!errmsg)
> +			errmsg = "Unknown Error Bit";
> +
> +		pci_printk(level, dev, "   [%2d] %s\n", i, errmsg);
> +	}
>  }
>  
>  void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)

-- 
Sathyanarayanan Kuppuswamy
Linux Kernel Developer