vbox-dkms modules (vboxnetadp vboxdrv) compilation error against kernel 4.20.0-rc6 -> fixed after (not in) 5.2.22

[Tyler A]

I am on ArchLinux and decided to to use the ​mainline kernel ie "vanilla" with ​mainline-headers. That is currently ​4.20.0-rc6-mainline and noticed these compilation failures:

$ cat /var/lib/dkms/vboxhost/5.2.22_OSE/build/make.log
DKMS make.log for vboxhost-5.2.22_OSE for kernel 4.20.0-rc6-mainline (x86_64)
Sat Dec 15 17:29:02 ACDT 2018
make: Entering directory '/usr/lib/modules/4.20.0-rc6-mainline/build'
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetflt/linux/VBoxNetFlt-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetadp/linux/VBoxNetAdp-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetflt/VBoxNetFlt.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetadp/VBoxNetAdp.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetflt/SUPR0IdcClient.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/linux/SUPDrv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxpci/linux/VBoxPci-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxpci/VBoxPci.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetflt/SUPR0IdcClientComponent.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetflt/linux/SUPR0IdcClient-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxpci/SUPR0IdcClient.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxpci/SUPR0IdcClientComponent.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxpci/linux/SUPR0IdcClient-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/SUPDrv.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/SUPDrvGip.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/SUPDrvSem.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/SUPDrvTracer.o
/var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetadp/linux/VBoxNetAdp-linux.c:132:6: error: ‘const struct ethtool_ops’ has no member named ‘get_settings’; did you mean ‘get_strings’?
     .get_settings       = vboxNetAdpEthGetSettings,
      ^~~~~~~~~~~~
      get_strings
/var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetadp/linux/VBoxNetAdp-linux.c:132:27: error: initialization of ‘int (*)(struct net_device *)’ from incompatible pointer type ‘int (*)(struct net_device *, struct ethtool_cmd *)’ [-Werror=incompatible-pointer-types]
     .get_settings       = vboxNetAdpEthGetSettings,
                           ^~~~~~~~~~~~~~~~~~~~~~~~
/var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetadp/linux/VBoxNetAdp-linux.c:132:27: note: (near initialization for ‘gEthToolOpsVBoxNetAdp.get_regs_len’)
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:291: /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetadp/linux/VBoxNetAdp-linux.o] Error 1
make[1]: *** [scripts/Makefile.build:516: /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetadp] Error 2
make[1]: *** Waiting for unfinished jobs....
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/SUPLibAll.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/alloc-r0drv.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/initterm-r0drv.o
  LD [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxpci/vboxpci.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/memobj-r0drv.o
  LD [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxnetflt/vboxnetflt.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/mpnotification-r0drv.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/powernotification-r0drv.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/assert-r0drv-linux.o
/var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/.tmp_SUPDrvTracer.o: warning: objtool: .text+0x7: indirect jump found in RETPOLINE build
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/alloc-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/initterm-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/memobj-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/memuserkernel-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/mp-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/mpnotification-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/process-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/rtStrFormatKernelAddress-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/semevent-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/semeventmulti-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/semfastmutex-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/semmutex-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/spinlock-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/thread-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/thread2-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/threadctxhooks-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/time-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/timer-r0drv-linux.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/generic/semspinmutex-r0drv-generic.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/common/alloc/alloc.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/common/checksum/crc32.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/common/checksum/ipv4.o
  CC [M]  /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/common/checksum/ipv6.o
/var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/time-r0drv-linux.c: In function ‘VBoxHost_RTTimeNow’:
/var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/time-r0drv-linux.c:175:5: error: implicit declaration of function ‘ktime_get_real_ts’; did you mean ‘ktime_get_real_ns’? [-Werror=implicit-function-declaration]
     ktime_get_real_ts(&Ts);
     ^~~~~~~~~~~~~~~~~
     ktime_get_real_ns
cc1: some warnings being treated as errors
make[2]: *** [scripts/Makefile.build:291: /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv/r0drv/linux/time-r0drv-linux.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [scripts/Makefile.build:516: /var/lib/dkms/vboxhost/5.2.22_OSE/build/vboxdrv] Error 2
make: *** [Makefile:1565: _module_/var/lib/dkms/vboxhost/5.2.22_OSE/build] Error 2
make: Leaving directory '/usr/lib/modules/4.20.0-rc6-mainline/build'

[Tyler A]

Looks like this has already been discussed:

• Fixes for API changes in kernel 4.20 (November 2018)
• Fixes for API changes in kernel 4.20 (December 2018)

[Tyler A]

Can confirm that the current test version 5.2.23 r127495 solves this issue and this ticket should be closed after the next stable version comes out.