I moved up to using 5.18.x kernel and virtualbox-modules-6.1.34 failed compile with this error: sh ./scripts/modules-check.sh /var/tmp/portage/app-emulation/virtualbox-modules-6.1.34/work/vboxnetadp/modules.order /var/tmp/portage/app-emulation/virtualbox-modules-6.1.34/work/vboxnetflt/linux/VBoxNetFlt-linux.c: In function ‘vboxNetFltPortOsXmit’: /var/tmp/portage/app-emulation/virtualbox-modules-6.1.34/work/vboxnetflt/linux/VBoxNetFlt-linux.c:2314:23: error: implicit declaration of function ‘netif_rx_ni’; did you mean ‘netif_rx’? [-Werror=implicit-function-declaration] 2314 | err = netif_rx_ni(pBuf); | ^~~~~~~~~~~ | netif_rx make -f ./scripts/Makefile.modpost scripts/Makefile.modpost:134: warning: overriding recipe for target '/var/tmp/portage/app-emulation/virtualbox-modules-6.1.34/work/vboxnetadp/Module.symvers' scripts/Makefile.modpost:117: warning: ignoring old recipe for target '/var/tmp/portage/app-emulation/virtualbox-modules-6.1.34/work/vboxnetadp/Module.symvers' I did not experience this error with 5.17 kernels and I searched, but did not find this bug reported anywhere. The simple fix was to err = netif_rx_ni(pBuf); to err = netif_rx(pBuf); and using ebuild to compile and merge.
I would strongly recommend against using non-LTS kernels with out-of-tree modules. *** This bug has been marked as a duplicate of bug 847094 ***
