Build regressions were detected on the s390 architecture with the Linux next-20250813 tag when building with the allyesconfig configuration.
The failure is caused by unresolved symbol references to stmmac_simple_pm_ops in multiple STMMAC driver object files, resulting in a link error during vmlinux generation.
First seen on next-20250813 Good: next-20250812 Bad: next-20250813 and next-20250819
Regression Analysis: - New regression? yes - Reproducibility? yes
* s390, build - gcc-13-allyesconfig
Boot regression: next-20250813 s390 allyesconfig undefined reference to `stmmac_simple_pm_ops'
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
## Build log s390x-linux-gnu-ld: drivers/net/ethernet/stmicro/stmmac/dwmac-rk.o:(.data.rel+0xa0): undefined reference to `stmmac_simple_pm_ops' s390x-linux-gnu-ld: drivers/net/ethernet/stmicro/stmmac/dwmac-stm32.o:(.data.rel+0xa0): undefined reference to `stmmac_simple_pm_ops' s390x-linux-gnu-ld: drivers/net/ethernet/stmicro/stmmac/stmmac_pci.o:(.data.rel+0xe0): undefined reference to `stmmac_simple_pm_ops' s390x-linux-gnu-ld: drivers/net/ethernet/stmicro/stmmac/dwmac-loongson.o:(.data.rel+0xe0): undefined reference to `stmmac_simple_pm_ops' make[3]: *** [/scripts/Makefile.vmlinux:91: vmlinux.unstripped] Error 1
## Source * Kernel version: 6.17.0-rc2 * Git tree: https://kernel.googlesource.com/pub/scm/linux/kernel/git/next/linux-next.git * Git describe: next-20250818 * Git commit: 3ac864c2d9bb8608ee236e89bf561811613abfce * Architectures: s390 * Toolchains: gcc-13 * Kconfigs: allyesconfig
## Build * Build log: https://qa-reports.linaro.org/api/testruns/29579401/log_file/ * Build details: https://regressions.linaro.org/lkft/linux-next-master/next-20250818/build/gc... * Build plan: https://tuxapi.tuxsuite.com/v1/groups/linaro/projects/lkft/builds/31RcVYdjsd... * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/31RcVYdjsdhroYxXs4TJY... * Kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/31RcVYdjsdhroYxXs4TJY...
-- Linaro LKFT https://lkft.linaro.org