/var/tmp/portage/app-emulation/virtualbox-modules-6.1.4-r1/work/vboxdrv/r0drv/linux/memobj-r0drv-linux.c: In function rtR0MemObjNativeMapKernel: /var/tmp/portage/app-emulation/virtualbox-modules-6.1.4-r1/work/vboxdrv/r0drv/linux/memobj-r0drv-linux.c:1465:32: error: implicit declaration of function ioremap_nocache; did you mean ioremap_cache? [-Werror=implicit-function-declaration] 1465 | ? ioremap_nocache(pMemLnxToMap->Core.u.Phys.PhysBase + offSub, cbSub) | ^~~~~~~~~~~~~~~ | ioremap_cache ------------------------------------------------------------------- This is an unstable amd64 chroot image at a tinderbox (==build bot) name: 17.1_no-multilib_hardened-libressl-20200403-101709 ------------------------------------------------------------------- gcc-config -l: [1] x86_64-pc-linux-gnu-9.3.0 * /usr/lib/llvm/10 10.0.0 Available Python interpreters, in order of preference: [1] python3.8 [2] python3.7 [3] python3.6 [4] python2.7 (fallback) Available Ruby profiles: [1] ruby24 (with Rubygems) [2] ruby25 (with Rubygems) * Available Rust versions: [1] rust-1.42.0 * The Glorious Glasgow Haskell Compilation System, version 8.0.2 timestamp of HEAD at this tinderbox image: /var/db/repos/gentoo Sat 04 Apr 2020 07:37:48 AM UTC /var/db/repos/libressl Fri 03 Apr 2020 07:10:10 PM UTC emerge -qpvO app-emulation/virtualbox-modules [ebuild N ] app-emulation/virtualbox-modules-6.1.4-r1 USE="-pax_kernel"
Created attachment 629804 [details] emerge-info.txt
Created attachment 629806 [details] app-emulation:virtualbox-modules-6.1.4-r1:20200404-082341.log
Created attachment 629808 [details] emerge-history.txt
Created attachment 629810 [details] environment
Created attachment 629812 [details] etc.portage.tbz2
Created attachment 629814 [details] logs.tbz2
Slightly different build error to bug 715726 but upstream are patching various new kernel issues in the same upstream bug. *** This bug has been marked as a duplicate of bug 715726 ***
I can confirm that the proposed patch in bug #715726 fixed this for me with kernel gentoo-sources-5.6.3
