Re: wm(4): failed to aquire semaphore

[SAITOH Masanobu <msaitoh%execsw.org@localhost>]

On 2020/10/22 19:48, Manuel Bouyer wrote:
> Hello,
> I have an older desktop system with:
> wm0 at pci0 dev 25 function 0: 82801I (AMT) LAN Controller (rev. 0x02)
> wm0: interrupting at msi0 vec 0
> wm0: PCI-Express bus
> wm0: 2048 words FLASH, version 1.1.1
> wm0: Ethernet address 00:1a:a0:d5:a0:0d
> wm0: 0x2a4480<FLASH,IOH_VALID,PCIE,ASF_FIRM,AMT,WOL>
> igphy0 at wm0 phy 1: i82566 10/100/1000 media interface, rev. 0
> igphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
>
> running netbsd 9.1.
> Every 5mn, I see in dmesg:
> [ 78053.063361] wm0: failed to acquire semaphore
> [ 78053.073383] wm0: wm_gmii_i82544_readreg: failed to get semaphore
> [ 78353.800448] wm0: failed to acquire semaphore
> [ 78353.800448] wm0: wm_gmii_i82544_readreg: failed to get semaphore
> [ 78654.537999] wm0: failed to acquire semaphore
> [ 78654.537999] wm0: wm_gmii_i82544_readreg: failed to get semaphore
> [ 78955.275254] wm0: failed to acquire semaphore
> [ 78955.275254] wm0: wm_gmii_i82544_readreg: failed to get semaphore
> [ 79256.013287] wm0: failed to acquire semaphore
> [ 79256.013287] wm0: wm_gmii_i82544_readreg: failed to get semaphore
>
> and network traffic stops for a few seconds.
>
> Does it ring a bell to someone ? Is it a hardware failure or software issue ?

Does it work without any problem on 9.0?
If so, could you bisect wm's changes between 9.0 and 9.1?

--
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                SAITOH Masanobu (msaitoh%execsw.org@localhost
                                 msaitoh%netbsd.org@localhost)