Re: Linux 6.18.17 -- build regression

[Sasha Levin]

On Thu, Mar 12, 2026 at 06:24:19PM -0400, Cal Peake wrote:
> On Thu, 12 Mar 2026, Sasha Levin wrote:
>
> > I'm announcing the release of the 6.18.17 kernel.
> >
> > All users of the 6.18 kernel series must upgrade.
>
> Hi,
>
> This release breaks my build with the following output:
>
>  LD      .tmp_vmlinux1
> ld: drivers/cxl/acpi.o: in function `add_root_nvdimm_bridge':
> acpi.c:(.text+0x16f): undefined reference to `devm_cxl_add_nvdimm_bridge'
> make[2]: *** [scripts/Makefile.vmlinux:72: vmlinux.unstripped] Error 1
> make[1]: *** [/home/cal/linux/kernel/build/linux-6.18.17/Makefile:1242: vmlinux] Error 2
> make: *** [Makefile:248: __sub-make] Error 2
>
> I've attached my gzipped config. Commit af9bf9889663 looks possibly
> guilty, but I don't have time at the moment to fully verify.
>
> Please let me know if I can provide anything else.

Hey,

Thanks for the report!

Could you please confirm that cherry-picking 93d0fcdddc9e ("cxl/acpi: Fix
CXL_ACPI and CXL_PMEM Kconfig tristate mismatch") fixes the issue you're
seeing?

--
Thanks,
Sasha