Since correctable errors have been corrected (and counted), the dmesg output
should not be reported as a warning, but rather as "informational".
Otherwise, using a certain well known vendor's PCIe parts in a USB4 docking
station, the dmesg buffer can be spammed with correctable errors, 717 bytes
per instance, potentially many MB per day.
Given the "WARN" priority, these messages have already confused the typical
user that stumbles across them, support staff (triaging feedback reports),
and more than a few linux kernel devs. Changing to INFO will hide these
messages from most audiences.
Signed-off-by: Grant Grundler <[email protected]>
---
drivers/pci/pcie/aer.c | 20 ++++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c
index f6c24ded134c..d7bfc6070ddb 100644
--- a/drivers/pci/pcie/aer.c
+++ b/drivers/pci/pcie/aer.c
@@ -692,7 +692,7 @@ static void __aer_print_error(struct pci_dev *dev,
if (info->severity == AER_CORRECTABLE) {
strings = aer_correctable_error_string;
- level = KERN_WARNING;
+ level = KERN_INFO;
} else {
strings = aer_uncorrectable_error_string;
level = KERN_ERR;
@@ -724,7 +724,7 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info)
layer = AER_GET_LAYER_ERROR(info->severity, info->status);
agent = AER_GET_AGENT(info->severity, info->status);
- level = (info->severity == AER_CORRECTABLE) ? KERN_WARNING : KERN_ERR;
+ level = (info->severity == AER_CORRECTABLE) ? KERN_INFO : KERN_ERR;
pci_printk(level, dev, "PCIe Bus Error: severity=%s, type=%s, (%s)\n",
aer_error_severity_string[info->severity],
@@ -797,14 +797,22 @@ void cper_print_aer(struct pci_dev *dev, int aer_severity,
info.mask = mask;
info.first_error = PCI_ERR_CAP_FEP(aer->cap_control);
- pci_err(dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask);
+ if (aer_severity == AER_CORRECTABLE)
+ pci_info(dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask);
+ else
+ pci_err(dev, "aer_status: 0x%08x, aer_mask: 0x%08x\n", status, mask);
+
__aer_print_error(dev, &info);
- pci_err(dev, "aer_layer=%s, aer_agent=%s\n",
- aer_error_layer[layer], aer_agent_string[agent]);
- if (aer_severity != AER_CORRECTABLE)
+ if (aer_severity == AER_CORRECTABLE) {
+ pci_info(dev, "aer_layer=%s, aer_agent=%s\n",
+ aer_error_layer[layer], aer_agent_string[agent]);
+ } else {
+ pci_err(dev, "aer_layer=%s, aer_agent=%s\n",
+ aer_error_layer[layer], aer_agent_string[agent]);
pci_err(dev, "aer_uncor_severity: 0x%08x\n",
aer->uncor_severity);
+ }
if (tlp_header_valid)
__print_tlp_header(dev, &aer->header_log);
--
2.41.0.rc0.172.g3f132b7071-goog
Tested-by: David Heidelberg <[email protected]>
For PATCH v4 please fix the typo reported by the bot :)
Seeing messages as
__aer_print_error: 72 callbacks suppressed
but it still prints many errors on my laptop. Anyway, the log is less
filled with this patch, so great!
Thank you
David
--
David Heidelberg
Certified Linux Magician
On Sat, Aug 12, 2023 at 5:45 PM David Heidelberg <[email protected]> wrote:
>
> Tested-by: David Heidelberg <[email protected]>
Thanks David!
> For PATCH v4 please fix the typo reported by the bot :)
Sorry - I'll do that today.
> Seeing messages as
>
> __aer_print_error: 72 callbacks suppressed
>
> but it still prints many errors on my laptop. Anyway, the log is less
> filled with this patch, so great!
Awesome! That's what I'm hoping for. :)
cheers,
grant
>
>
> Thank you
> David
>
> --
> David Heidelberg
> Certified Linux Magician
>
On Mon, 2023-08-14 at 08:40 -0700, Grant Grundler wrote:
> On Sat, Aug 12, 2023 at 5:45 PM David Heidelberg <[email protected]>
> wrote:
> >
> > Tested-by: David Heidelberg <[email protected]>
>
> Thanks David!
>
> > For PATCH v4 please fix the typo reported by the bot :)
>
> Sorry - I'll do that today.
Hi Grant,
Is there an update of this series?
My workstation suffers from too much correctable AER reporting as well
(related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
Generate Correctable Errors" and/or the motherboard design, I guess).
--
Xi Ruoyao <[email protected]>
School of Aerospace Science and Technology, Xidian University
On Mon, Sep 18, 2023 at 07:42:30PM +0800, Xi Ruoyao wrote:
> ...
> My workstation suffers from too much correctable AER reporting as well
> (related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
> Generate Correctable Errors" and/or the motherboard design, I guess).
We should rate-limit correctable error reporting so it's not
overwhelming.
At the same time, I'm *also* interested in the cause of these errors,
in case there's a Linux defect or a hardware erratum that we can work
around. Do you have a bug report with any more details, e.g., a dmesg
log and "sudo lspci -vv" output?
Bjorn
On Mon, Sep 18, 2023 at 4:42 AM Xi Ruoyao <[email protected]> wrote:
>
> On Mon, 2023-08-14 at 08:40 -0700, Grant Grundler wrote:
> > On Sat, Aug 12, 2023 at 5:45 PM David Heidelberg <[email protected]>
> > wrote:
> > >
> > > Tested-by: David Heidelberg <[email protected]>
> >
> > Thanks David!
> >
> > > For PATCH v4 please fix the typo reported by the bot :)
> >
> > Sorry - I'll do that today.
>
> Hi Grant,
>
> Is there an update of this series?
Sorry, while I had good intentions, my work has completely derailed my
attempts to make time for this. :(
I'll give this another run.
I'm also not offended if someone else picks this up and improves the situation.
cheers,
grant
>
> My workstation suffers from too much correctable AER reporting as well
> (related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
> Generate Correctable Errors" and/or the motherboard design, I guess).
>
> --
> Xi Ruoyao <[email protected]>
> School of Aerospace Science and Technology, Xidian University
On Mon, 2023-09-18 at 14:39 -0500, Bjorn Helgaas wrote:
> On Mon, Sep 18, 2023 at 07:42:30PM +0800, Xi Ruoyao wrote:
> > ...
>
> > My workstation suffers from too much correctable AER reporting as well
> > (related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
> > Generate Correctable Errors" and/or the motherboard design, I guess).
>
> We should rate-limit correctable error reporting so it's not
> overwhelming.
>
> At the same time, I'm *also* interested in the cause of these errors,
> in case there's a Linux defect or a hardware erratum that we can work
> around. Do you have a bug report with any more details, e.g., a dmesg
> log and "sudo lspci -vv" output?
Hi Bjorn,
Sorry for the *very* late reply (somehow I didn't see the reply at all
before it was removed by my cron job, and now I just savaged it from
lore.kernel.org...)
The dmesg is like:
[ 882.456994] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
[ 882.457002] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
[ 882.457003] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
[ 883.545763] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
[ 883.545789] pcieport 0000:00:1c.1: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
[ 883.545790] pcieport 0000:00:1c.1: device [8086:7a39] error status/mask=00000001/00002000
[ 883.545792] pcieport 0000:00:1c.1: [ 0] RxErr (First)
[ 883.545794] pcieport 0000:00:1c.1: AER: Error of this Agent is reported first
[ 883.545798] r8169 0000:06:00.0: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Transmitter ID)
[ 883.545799] r8169 0000:06:00.0: device [10ec:8125] error status/mask=00001101/0000e000
[ 883.545800] r8169 0000:06:00.0: [ 0] RxErr (First)
[ 883.545801] r8169 0000:06:00.0: [ 8] Rollover
[ 883.545802] r8169 0000:06:00.0: [12] Timeout
[ 883.545815] pcieport 0000:00:1c.1: AER: Correctable error message received from 0000:00:1c.1
[ 883.545823] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
[ 883.545824] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
lspci output attached.
Intel has issued an errata "RPL013" saying:
"Under complex microarchitectural conditions, the PCIe controller may
transmit an incorrectly formed Transaction Layer Packet (TLP), which
will fail CRC checks. When this erratum occurs, the PCIe end point may
record correctable errors resulting in either a NAK or link recovery.
Intel® has not observed any functional impact due to this erratum."
But I'm really unsure if it describes my issue.
Do you think I have some broken hardware and I should replace the CPU
and/or the motherboard (where the r8169 is soldered)? I've noticed that
my 13900K is almost impossible to overclock (despite it's a K), but I've
not encountered any issue other than these AER reporting so far after I
gave up overclocking.
--
Xi Ruoyao <[email protected]>
School of Aerospace Science and Technology, Xidian University
On 3/25/2024 1:19 AM, Xi Ruoyao wrote:
> On Mon, 2023-09-18 at 14:39 -0500, Bjorn Helgaas wrote:
>> On Mon, Sep 18, 2023 at 07:42:30PM +0800, Xi Ruoyao wrote:
>>> ...
>>> My workstation suffers from too much correctable AER reporting as well
>>> (related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
>>> Generate Correctable Errors" and/or the motherboard design, I guess).
>> We should rate-limit correctable error reporting so it's not
>> overwhelming.
>>
>> At the same time, I'm *also* interested in the cause of these errors,
>> in case there's a Linux defect or a hardware erratum that we can work
>> around. Do you have a bug report with any more details, e.g., a dmesg
>> log and "sudo lspci -vv" output?
> Hi Bjorn,
>
> Sorry for the *very* late reply (somehow I didn't see the reply at all
> before it was removed by my cron job, and now I just savaged it from
> lore.kernel.org...)
>
> The dmesg is like:
>
> [ 882.456994] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
> [ 882.457002] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
> [ 882.457003] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
> [ 883.545763] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
> [ 883.545789] pcieport 0000:00:1c.1: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
> [ 883.545790] pcieport 0000:00:1c.1: device [8086:7a39] error status/mask=00000001/00002000
> [ 883.545792] pcieport 0000:00:1c.1: [ 0] RxErr (First)
> [ 883.545794] pcieport 0000:00:1c.1: AER: Error of this Agent is reported first
> [ 883.545798] r8169 0000:06:00.0: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Transmitter ID)
> [ 883.545799] r8169 0000:06:00.0: device [10ec:8125] error status/mask=00001101/0000e000
> [ 883.545800] r8169 0000:06:00.0: [ 0] RxErr (First)
> [ 883.545801] r8169 0000:06:00.0: [ 8] Rollover
> [ 883.545802] r8169 0000:06:00.0: [12] Timeout
> [ 883.545815] pcieport 0000:00:1c.1: AER: Correctable error message received from 0000:00:1c.1
> [ 883.545823] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
> [ 883.545824] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
>
> lspci output attached.
>
> Intel has issued an errata "RPL013" saying:
>
> "Under complex microarchitectural conditions, the PCIe controller may
> transmit an incorrectly formed Transaction Layer Packet (TLP), which
> will fail CRC checks. When this erratum occurs, the PCIe end point may
> record correctable errors resulting in either a NAK or link recovery.
> Intel® has not observed any functional impact due to this erratum."
>
> But I'm really unsure if it describes my issue.
>
> Do you think I have some broken hardware and I should replace the CPU
> and/or the motherboard (where the r8169 is soldered)? I've noticed that
> my 13900K is almost impossible to overclock (despite it's a K), but I've
> not encountered any issue other than these AER reporting so far after I
> gave up overclocking.
Seems there are two r8169 nics on your board, only 0000:06:00.0 reports
aer errors, how about another one the 0000:07:00.0 nic ?
Thanks,
Ethan
On Mon, 2024-03-25 at 16:45 +0800, Ethan Zhao wrote:
> On 3/25/2024 1:19 AM, Xi Ruoyao wrote:
> > On Mon, 2023-09-18 at 14:39 -0500, Bjorn Helgaas wrote:
> > > On Mon, Sep 18, 2023 at 07:42:30PM +0800, Xi Ruoyao wrote:
> > > > ...
> > > > My workstation suffers from too much correctable AER reporting as well
> > > > (related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
> > > > Generate Correctable Errors" and/or the motherboard design, I guess).
> > > We should rate-limit correctable error reporting so it's not
> > > overwhelming.
> > >
> > > At the same time, I'm *also* interested in the cause of these errors,
> > > in case there's a Linux defect or a hardware erratum that we can work
> > > around. Do you have a bug report with any more details, e.g., a dmesg
> > > log and "sudo lspci -vv" output?
> > Hi Bjorn,
> >
> > Sorry for the *very* late reply (somehow I didn't see the reply at all
> > before it was removed by my cron job, and now I just savaged it from
> > lore.kernel.org...)
> >
> > The dmesg is like:
> >
> > [ 882.456994] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
> > [ 882.457002] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
> > [ 882.457003] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
> > [ 883.545763] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
> > [ 883.545789] pcieport 0000:00:1c.1: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
> > [ 883.545790] pcieport 0000:00:1c.1: device [8086:7a39] error status/mask=00000001/00002000
> > [ 883.545792] pcieport 0000:00:1c.1: [ 0] RxErr (First)
> > [ 883.545794] pcieport 0000:00:1c.1: AER: Error of this Agent is reported first
> > [ 883.545798] r8169 0000:06:00.0: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Transmitter ID)
> > [ 883.545799] r8169 0000:06:00.0: device [10ec:8125] error status/mask=00001101/0000e000
> > [ 883.545800] r8169 0000:06:00.0: [ 0] RxErr (First)
> > [ 883.545801] r8169 0000:06:00.0: [ 8] Rollover
> > [ 883.545802] r8169 0000:06:00.0: [12] Timeout
> > [ 883.545815] pcieport 0000:00:1c.1: AER: Correctable error message received from 0000:00:1c.1
> > [ 883.545823] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
> > [ 883.545824] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
> >
> > lspci output attached.
> >
> > Intel has issued an errata "RPL013" saying:
> >
> > "Under complex microarchitectural conditions, the PCIe controller may
> > transmit an incorrectly formed Transaction Layer Packet (TLP), which
> > will fail CRC checks. When this erratum occurs, the PCIe end point may
> > record correctable errors resulting in either a NAK or link recovery.
> > Intel® has not observed any functional impact due to this erratum."
> >
> > But I'm really unsure if it describes my issue.
> >
> > Do you think I have some broken hardware and I should replace the CPU
> > and/or the motherboard (where the r8169 is soldered)? I've noticed that
> > my 13900K is almost impossible to overclock (despite it's a K), but I've
> > not encountered any issue other than these AER reporting so far after I
> > gave up overclocking.
>
> Seems there are two r8169 nics on your board, only 0000:06:00.0 reports
> aer errors, how about another one the 0000:07:00.0 nic ?
It never happens to 0000:07:00.0, even if I plug the ethernet cable into
it instead of 0000:06:00.0.
Maybe I should just use 0000:07:00.0 and blacklist 0000:06:00.0 as I
don't need two NICs?
--
Xi Ruoyao <[email protected]>
School of Aerospace Science and Technology, Xidian University
On Mon, 2024-03-25 at 18:15 +0800, Xi Ruoyao wrote:
> On Mon, 2024-03-25 at 16:45 +0800, Ethan Zhao wrote:
> > On 3/25/2024 1:19 AM, Xi Ruoyao wrote:
> > > On Mon, 2023-09-18 at 14:39 -0500, Bjorn Helgaas wrote:
> > > > On Mon, Sep 18, 2023 at 07:42:30PM +0800, Xi Ruoyao wrote:
> > > > > ...
> > > > > My workstation suffers from too much correctable AER reporting as well
> > > > > (related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
> > > > > Generate Correctable Errors" and/or the motherboard design, I guess).
> > > > We should rate-limit correctable error reporting so it's not
> > > > overwhelming.
> > > >
> > > > At the same time, I'm *also* interested in the cause of these errors,
> > > > in case there's a Linux defect or a hardware erratum that we can work
> > > > around. Do you have a bug report with any more details, e.g., a dmesg
> > > > log and "sudo lspci -vv" output?
> > > Hi Bjorn,
> > >
> > > Sorry for the *very* late reply (somehow I didn't see the reply at all
> > > before it was removed by my cron job, and now I just savaged it from
> > > lore.kernel.org...)
> > >
> > > The dmesg is like:
> > >
> > > [ 882.456994] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
> > > [ 882.457002] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
> > > [ 882.457003] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
> > > [ 883.545763] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
> > > [ 883.545789] pcieport 0000:00:1c.1: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
> > > [ 883.545790] pcieport 0000:00:1c.1: device [8086:7a39] error status/mask=00000001/00002000
> > > [ 883.545792] pcieport 0000:00:1c.1: [ 0] RxErr (First)
> > > [ 883.545794] pcieport 0000:00:1c.1: AER: Error of this Agent is reported first
> > > [ 883.545798] r8169 0000:06:00.0: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Transmitter ID)
> > > [ 883.545799] r8169 0000:06:00.0: device [10ec:8125] error status/mask=00001101/0000e000
> > > [ 883.545800] r8169 0000:06:00.0: [ 0] RxErr (First)
> > > [ 883.545801] r8169 0000:06:00.0: [ 8] Rollover
> > > [ 883.545802] r8169 0000:06:00.0: [12] Timeout
> > > [ 883.545815] pcieport 0000:00:1c.1: AER: Correctable error message received from 0000:00:1c.1
> > > [ 883.545823] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
> > > [ 883.545824] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
> > >
> > > lspci output attached.
> > >
> > > Intel has issued an errata "RPL013" saying:
> > >
> > > "Under complex microarchitectural conditions, the PCIe controller may
> > > transmit an incorrectly formed Transaction Layer Packet (TLP), which
> > > will fail CRC checks. When this erratum occurs, the PCIe end point may
> > > record correctable errors resulting in either a NAK or link recovery.
> > > Intel® has not observed any functional impact due to this erratum."
> > >
> > > But I'm really unsure if it describes my issue.
> > >
> > > Do you think I have some broken hardware and I should replace the CPU
> > > and/or the motherboard (where the r8169 is soldered)? I've noticed that
> > > my 13900K is almost impossible to overclock (despite it's a K), but I've
> > > not encountered any issue other than these AER reporting so far after I
> > > gave up overclocking.
> >
> > Seems there are two r8169 nics on your board, only 0000:06:00.0 reports
> > aer errors, how about another one the 0000:07:00.0 nic ?
>
> It never happens to 0000:07:00.0, even if I plug the ethernet cable into
> it instead of 0000:06:00.0.
>
> Maybe I should just use 0000:07:00.0 and blacklist 0000:06:00.0 as I
> don't need two NICs?
Plugging the ethernet cable into 0000:07:00.0 and then
"echo 1 > /sys/bus/pci/devices/0000:00:1c.1/remove" work for me...
--
Xi Ruoyao <[email protected]>
School of Aerospace Science and Technology, Xidian University
On 3/25/2024 6:15 PM, Xi Ruoyao wrote:
> On Mon, 2024-03-25 at 16:45 +0800, Ethan Zhao wrote:
>> On 3/25/2024 1:19 AM, Xi Ruoyao wrote:
>>> On Mon, 2023-09-18 at 14:39 -0500, Bjorn Helgaas wrote:
>>>> On Mon, Sep 18, 2023 at 07:42:30PM +0800, Xi Ruoyao wrote:
>>>>> ...
>>>>> My workstation suffers from too much correctable AER reporting as well
>>>>> (related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
>>>>> Generate Correctable Errors" and/or the motherboard design, I guess).
>>>> We should rate-limit correctable error reporting so it's not
>>>> overwhelming.
>>>>
>>>> At the same time, I'm *also* interested in the cause of these errors,
>>>> in case there's a Linux defect or a hardware erratum that we can work
>>>> around. Do you have a bug report with any more details, e.g., a dmesg
>>>> log and "sudo lspci -vv" output?
>>> Hi Bjorn,
>>>
>>> Sorry for the *very* late reply (somehow I didn't see the reply at all
>>> before it was removed by my cron job, and now I just savaged it from
>>> lore.kernel.org...)
>>>
>>> The dmesg is like:
>>>
>>> [ 882.456994] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
>>> [ 882.457002] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
>>> [ 882.457003] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
>>> [ 883.545763] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
>>> [ 883.545789] pcieport 0000:00:1c.1: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
>>> [ 883.545790] pcieport 0000:00:1c.1: device [8086:7a39] error status/mask=00000001/00002000
>>> [ 883.545792] pcieport 0000:00:1c.1: [ 0] RxErr (First)
>>> [ 883.545794] pcieport 0000:00:1c.1: AER: Error of this Agent is reported first
>>> [ 883.545798] r8169 0000:06:00.0: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Transmitter ID)
>>> [ 883.545799] r8169 0000:06:00.0: device [10ec:8125] error status/mask=00001101/0000e000
>>> [ 883.545800] r8169 0000:06:00.0: [ 0] RxErr (First)
>>> [ 883.545801] r8169 0000:06:00.0: [ 8] Rollover
>>> [ 883.545802] r8169 0000:06:00.0: [12] Timeout
>>> [ 883.545815] pcieport 0000:00:1c.1: AER: Correctable error message received from 0000:00:1c.1
>>> [ 883.545823] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
>>> [ 883.545824] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
>>>
>>> lspci output attached.
>>>
>>> Intel has issued an errata "RPL013" saying:
>>>
>>> "Under complex microarchitectural conditions, the PCIe controller may
>>> transmit an incorrectly formed Transaction Layer Packet (TLP), which
>>> will fail CRC checks. When this erratum occurs, the PCIe end point may
>>> record correctable errors resulting in either a NAK or link recovery.
>>> Intel® has not observed any functional impact due to this erratum."
>>>
>>> But I'm really unsure if it describes my issue.
>>>
>>> Do you think I have some broken hardware and I should replace the CPU
>>> and/or the motherboard (where the r8169 is soldered)? I've noticed that
>>> my 13900K is almost impossible to overclock (despite it's a K), but I've
>>> not encountered any issue other than these AER reporting so far after I
>>> gave up overclocking.
>> Seems there are two r8169 nics on your board, only 0000:06:00.0 reports
>> aer errors, how about another one the 0000:07:00.0 nic ?
> It never happens to 0000:07:00.0, even if I plug the ethernet cable into
> it instead of 0000:06:00.0.
So something is wrong with the physical layer, I guess.
>
> Maybe I should just use 0000:07:00.0 and blacklist 0000:06:00.0 as I
> don't need two NICs?
Yup,
ratelimit the AER warning is another choice instead of change WARN to INFO.
if corrected error flood happens, even the function is working, suggests
something was already wrong, likely will be worse, that is the meaning of
WARN I think.
Thanks,
Ethan
>
On Tue, Mar 26, 2024 at 09:39:54AM +0800, Ethan Zhao wrote:
> On 3/25/2024 6:15 PM, Xi Ruoyao wrote:
> > On Mon, 2024-03-25 at 16:45 +0800, Ethan Zhao wrote:
> > > On 3/25/2024 1:19 AM, Xi Ruoyao wrote:
> > > > On Mon, 2023-09-18 at 14:39 -0500, Bjorn Helgaas wrote:
> > > > > On Mon, Sep 18, 2023 at 07:42:30PM +0800, Xi Ruoyao wrote:
> > > > > > ...
> > > > > > My workstation suffers from too much correctable AER reporting as well
> > > > > > (related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
> > > > > > Generate Correctable Errors" and/or the motherboard design, I guess).
> > > > > We should rate-limit correctable error reporting so it's not
> > > > > overwhelming.
> > > > >
> > > > > At the same time, I'm *also* interested in the cause of these errors,
> > > > > in case there's a Linux defect or a hardware erratum that we can work
> > > > > around. Do you have a bug report with any more details, e.g., a dmesg
> > > > > log and "sudo lspci -vv" output?
> > > > Hi Bjorn,
> > > >
> > > > Sorry for the *very* late reply (somehow I didn't see the reply at all
> > > > before it was removed by my cron job, and now I just savaged it from
> > > > lore.kernel.org...)
> > > >
> > > > The dmesg is like:
> > > >
> > > > [ 882.456994] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
> > > > [ 882.457002] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
> > > > [ 882.457003] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
> > > > [ 883.545763] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
> > > > [ 883.545789] pcieport 0000:00:1c.1: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
> > > > [ 883.545790] pcieport 0000:00:1c.1: device [8086:7a39] error status/mask=00000001/00002000
> > > > [ 883.545792] pcieport 0000:00:1c.1: [ 0] RxErr (First)
> > > > [ 883.545794] pcieport 0000:00:1c.1: AER: Error of this Agent is reported first
> > > > [ 883.545798] r8169 0000:06:00.0: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Transmitter ID)
> > > > [ 883.545799] r8169 0000:06:00.0: device [10ec:8125] error status/mask=00001101/0000e000
> > > > [ 883.545800] r8169 0000:06:00.0: [ 0] RxErr (First)
> > > > [ 883.545801] r8169 0000:06:00.0: [ 8] Rollover
> > > > [ 883.545802] r8169 0000:06:00.0: [12] Timeout
> > > > [ 883.545815] pcieport 0000:00:1c.1: AER: Correctable error message received from 0000:00:1c.1
> > > > [ 883.545823] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
> > > > [ 883.545824] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
> > > >
> > > > lspci output attached.
> > > >
> > > > Intel has issued an errata "RPL013" saying:
> > > >
> > > > "Under complex microarchitectural conditions, the PCIe controller may
> > > > transmit an incorrectly formed Transaction Layer Packet (TLP), which
> > > > will fail CRC checks. When this erratum occurs, the PCIe end point may
> > > > record correctable errors resulting in either a NAK or link recovery.
> > > > Intel® has not observed any functional impact due to this erratum."
> > > >
> > > > But I'm really unsure if it describes my issue.
> > > >
> > > > Do you think I have some broken hardware and I should replace the CPU
> > > > and/or the motherboard (where the r8169 is soldered)? I've noticed that
> > > > my 13900K is almost impossible to overclock (despite it's a K), but I've
> > > > not encountered any issue other than these AER reporting so far after I
> > > > gave up overclocking.
> > > Seems there are two r8169 nics on your board, only 0000:06:00.0 reports
> > > aer errors, how about another one the 0000:07:00.0 nic ?
> > It never happens to 0000:07:00.0, even if I plug the ethernet cable into
> > it instead of 0000:06:00.0.
>
> So something is wrong with the physical layer, I guess.
>
> > Maybe I should just use 0000:07:00.0 and blacklist 0000:06:00.0 as I
> > don't need two NICs?
>
> Yup,
> ratelimit the AER warning is another choice instead of change WARN to INFO.
> if corrected error flood happens, even the function is working, suggests
> something was already wrong, likely will be worse, that is the meaning of
> WARN I think.
We should fix this. IMHO Correctable Errors should be "info" level,
non-alarming, and rate-limited. They're basically hints about link
integrity.
Bjorn
On 3/27/2024 5:17 AM, Bjorn Helgaas wrote:
> On Tue, Mar 26, 2024 at 09:39:54AM +0800, Ethan Zhao wrote:
>> On 3/25/2024 6:15 PM, Xi Ruoyao wrote:
>>> On Mon, 2024-03-25 at 16:45 +0800, Ethan Zhao wrote:
>>>> On 3/25/2024 1:19 AM, Xi Ruoyao wrote:
>>>>> On Mon, 2023-09-18 at 14:39 -0500, Bjorn Helgaas wrote:
>>>>>> On Mon, Sep 18, 2023 at 07:42:30PM +0800, Xi Ruoyao wrote:
>>>>>>> ...
>>>>>>> My workstation suffers from too much correctable AER reporting as well
>>>>>>> (related to Intel's errata "RPL013: Incorrectly Formed PCIe Packets May
>>>>>>> Generate Correctable Errors" and/or the motherboard design, I guess).
>>>>>> We should rate-limit correctable error reporting so it's not
>>>>>> overwhelming.
>>>>>>
>>>>>> At the same time, I'm *also* interested in the cause of these errors,
>>>>>> in case there's a Linux defect or a hardware erratum that we can work
>>>>>> around. Do you have a bug report with any more details, e.g., a dmesg
>>>>>> log and "sudo lspci -vv" output?
>>>>> Hi Bjorn,
>>>>>
>>>>> Sorry for the *very* late reply (somehow I didn't see the reply at all
>>>>> before it was removed by my cron job, and now I just savaged it from
>>>>> lore.kernel.org...)
>>>>>
>>>>> The dmesg is like:
>>>>>
>>>>> [ 882.456994] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
>>>>> [ 882.457002] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
>>>>> [ 882.457003] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
>>>>> [ 883.545763] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:00:1c.1
>>>>> [ 883.545789] pcieport 0000:00:1c.1: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
>>>>> [ 883.545790] pcieport 0000:00:1c.1: device [8086:7a39] error status/mask=00000001/00002000
>>>>> [ 883.545792] pcieport 0000:00:1c.1: [ 0] RxErr (First)
>>>>> [ 883.545794] pcieport 0000:00:1c.1: AER: Error of this Agent is reported first
>>>>> [ 883.545798] r8169 0000:06:00.0: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Transmitter ID)
>>>>> [ 883.545799] r8169 0000:06:00.0: device [10ec:8125] error status/mask=00001101/0000e000
>>>>> [ 883.545800] r8169 0000:06:00.0: [ 0] RxErr (First)
>>>>> [ 883.545801] r8169 0000:06:00.0: [ 8] Rollover
>>>>> [ 883.545802] r8169 0000:06:00.0: [12] Timeout
>>>>> [ 883.545815] pcieport 0000:00:1c.1: AER: Correctable error message received from 0000:00:1c.1
>>>>> [ 883.545823] pcieport 0000:00:1c.1: AER: found no error details for 0000:00:1c.1
>>>>> [ 883.545824] pcieport 0000:00:1c.1: AER: Multiple Correctable error message received from 0000:06:00.0
>>>>>
>>>>> lspci output attached.
>>>>>
>>>>> Intel has issued an errata "RPL013" saying:
>>>>>
>>>>> "Under complex microarchitectural conditions, the PCIe controller may
>>>>> transmit an incorrectly formed Transaction Layer Packet (TLP), which
>>>>> will fail CRC checks. When this erratum occurs, the PCIe end point may
>>>>> record correctable errors resulting in either a NAK or link recovery.
>>>>> Intel® has not observed any functional impact due to this erratum."
>>>>>
>>>>> But I'm really unsure if it describes my issue.
>>>>>
>>>>> Do you think I have some broken hardware and I should replace the CPU
>>>>> and/or the motherboard (where the r8169 is soldered)? I've noticed that
>>>>> my 13900K is almost impossible to overclock (despite it's a K), but I've
>>>>> not encountered any issue other than these AER reporting so far after I
>>>>> gave up overclocking.
>>>> Seems there are two r8169 nics on your board, only 0000:06:00.0 reports
>>>> aer errors, how about another one the 0000:07:00.0 nic ?
>>> It never happens to 0000:07:00.0, even if I plug the ethernet cable into
>>> it instead of 0000:06:00.0.
>> So something is wrong with the physical layer, I guess.
>>
>>> Maybe I should just use 0000:07:00.0 and blacklist 0000:06:00.0 as I
>>> don't need two NICs?
>> Yup,
>> ratelimit the AER warning is another choice instead of change WARN to INFO.
>> if corrected error flood happens, even the function is working, suggests
>> something was already wrong, likely will be worse, that is the meaning of
>> WARN I think.
> We should fix this. IMHO Correctable Errors should be "info" level,
> non-alarming, and rate-limited. They're basically hints about link
> integrity.
This case, hit following errors:
[ 883.545800] r8169 0000:06:00.0: [ 0] RxErr
[ 883.545801] r8169 0000:06:00.0: [ 8] Rollover
[ 883.545802] r8169 0000:06:00.0: [12] Timeout
#1 Timeout -- replay timer timeout, means endpoint didn't response with ACK DLLP or
NACK in time, that caused the re-send timer timeout, the sender will re-send the
packet.
#2 Rollover -- the counter of re-transmission reaches 0 (from 11b ->00b), means the
sender had tried 3 times. that would trigger link retraining to recover.
#1 & #2 happened together, but no uncorrected errors reported, means the link was
recovered, the issue mostly caused by improper TxEQ, receiver equalization, bad
signal integrity.
#3 RxErr -- bad DLLP, bad TLP, clock issue, signal integrity issue etc.
so, yup, basically, the signal integrity is not good enough.
Though the function could work, its performance will be impacted.
If we change it to "info" level, by default, users wouldn't see such errors, they
might hit more serious data corruption/malfunction in the future without WARN
precaution to them.
Thanks,
Ethan
> Bjorn
>
On Wed, 2024-03-27 at 11:49 +0800, Ethan Zhao wrote:
> so, yup, basically, the signal integrity is not good enough.
> Though the function could work, its performance will be impacted.
FWIW I've replaced the motherboard and this is gone. So it's likely a
signal integrity issue of the motherboard.
--
Xi Ruoyao <[email protected]>
School of Aerospace Science and Technology, Xidian University