Subject: Re: [next-20260122] Build failure on IBM Power Server

From: Venkat Rao Bagalkote <[email-masked]>
Date: Fri, 23 Jan 2026 14:41:35 +0530

On 23/01/26 1:17 pm, Randy Dunlap wrote:
>
> On 1/22/26 8:15 PM, Venkat Rao Bagalkote wrote:
>> Greetings!!
>>
>> IBM CI has reported build failure of 20260122 on IBM Power server.
>>
>>
>> Error:
>>
>>
>> ERROR: modpost: "phy_get_rx_polarity" [drivers/net/phy/air_en8811h.ko] undefined!
>> ERROR: modpost: "phy_get_tx_polarity" [drivers/net/phy/air_en8811h.ko] undefined!
>> make[2]: *** [scripts/Makefile.modpost:147: Module.symvers] Error 1
>> make[1]: *** [/home/upstreamci/linux/Makefile:2040: modpost] Error 2
>> make: *** [Makefile:248: __sub-make] Error 2
>>
>>
>> IBM CI has bisected this issue and below is the bisection log.
>>
>>
>> git bisect log
>> git bisect log
>> git bisect start
>> # status: waiting for both good and bad commits
>> # good: [24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7] Linux 6.19-rc6
>> git bisect good 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7
>> # status: waiting for bad commit, 1 good commit known
>> # bad: [a0c666c25aeefd16f4b088c6549a6fb6b65a8a1d] Add linux-next specific files for 20260122
>> git bisect bad a0c666c25aeefd16f4b088c6549a6fb6b65a8a1d
>> # good: [2574bcf1765ec13bf3ef469aa5b15cce293aebb6] Merge branch 'master' of https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git
>> git bisect good 2574bcf1765ec13bf3ef469aa5b15cce293aebb6
>> # good: [2ad38467d20c16f38d0cffad711ef4f4acdb8b29] Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux.git
>> git bisect good 2ad38467d20c16f38d0cffad711ef4f4acdb8b29
>> # good: [a954370fea56ee1bf995524255a34da7a1ddb524] Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86.git
>> git bisect good a954370fea56ee1bf995524255a34da7a1ddb524
>> # good: [c7ec480f05dd0185a26f190471905ddf1215bc52] Merge branch 'staging-next' of https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
>> git bisect good c7ec480f05dd0185a26f190471905ddf1215bc52
>> # good: [4427398fed2b8e07a62fd4f3f6fcf9ffcf56829a] Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl.git
>> git bisect good 4427398fed2b8e07a62fd4f3f6fcf9ffcf56829a
>> # good: [852ccea1ca3144beb7003976d4fa04dbf81b307b] Merge branch 'next' of https://git.kernel.org/pub/scm/linux/kernel/git/mic/linux.git
>> git bisect good 852ccea1ca3144beb7003976d4fa04dbf81b307b
>> # good: [f174dabd307dfd92edacb34e8bee0384daa1bd2e] Merge branch 'next' of https://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git
>> git bisect good f174dabd307dfd92edacb34e8bee0384daa1bd2e
>> # good: [e31f3c967c66cf03eecdf50fe138d05f635e3698] doc: Add housekeeping documentation
>> git bisect good e31f3c967c66cf03eecdf50fe138d05f635e3698
>> # good: [0cc83fc23debf3e2df19c4510a77fe2d60ab2693] gpu: nova-core: don't print raw PMU table entries
>> git bisect good 0cc83fc23debf3e2df19c4510a77fe2d60ab2693
>> # good: [75df6953fed6b7274f9c5080925ae4c8d3e424e6] Merge branch 'for-next' of https://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git
>> git bisect good 75df6953fed6b7274f9c5080925ae4c8d3e424e6
>> # good: [086714bbb96f63785da251e1f8d1ce3e716a6e42] Merge tag 'v6.19-rc5' into drm-rust-next
>> git bisect good 086714bbb96f63785da251e1f8d1ce3e716a6e42
>> # good: [6ea52b6d8f33ae627f4dcf43b12b6e713a8b9331] drm/tyr: use read_poll_timeout
>> git bisect good 6ea52b6d8f33ae627f4dcf43b12b6e713a8b9331
>> # good: [b956937ce78fae5fa785f6a95f291e2137502c5e] drm: tyr: Mark BROKEN
>> git bisect good b956937ce78fae5fa785f6a95f291e2137502c5e
>> # first bad commit: [a0c666c25aeefd16f4b088c6549a6fb6b65a8a1d] Add linux-next specific files for 20260122
>>
>>
>> If you happen to fix, this please add below tag.
>>
>>
>> Reported-by: Venkat Rao Bagalkote <[email-masked]>
> I don't think that bisection helps very much.
>
> Can you post the kernel config file?
>

Attached is the .config file.

GCC: gcc version 11.5.0 20240719 (Red Hat 11.5.0-2) (GCC)

ld: GNU ld version 2.35.2-54.el9

Regards,

Venkat.