Created attachment 461040 [details] emerge.log ebuild for this version is exist, but patch is missing. 4.4.43 is last that applies.
https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=fb47f2b6153e7916b944da756793c3772557a11f
fixed please reinstall gentoo-sources 4.4.44
*** Bug 606906 has been marked as a duplicate of this bug. ***
*** Bug 607314 has been marked as a duplicate of this bug. ***