Linux 5.3.0-rc4-rk3399: GPL-incompatible module zfs.ko uses GPL-only symbol 'preempt_schedule_notrace'

[mrhaoxx]

System information

Type	Version/Name
Distribution Name	Debian
Distribution Version	buster
Linux Kernel	Linux 5.3.0-rc4-rk3399
Architecture	aarch64-linux
ZFS Version	0.8.2/0.8.3
SPL Version	None

Describe the problem you're observing

  Building modules, stage 2.
  MODPOST 8 modules
FATAL: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'preempt_schedule_notrace'
make[4]: *** [scripts/Makefile.modpost:103: modules-modpost] Error 1

Similar Issue:
#8545 #9745 #6146

[mrhaoxx]

Also failed on linux 5.3.11-rockchip64

dkms build zfs/0.8.2

Building module:
cleaning build area...
make -j6 KERNELRELEASE=5.3.11-rockchip64....................................(bad exit status: 2)
Error! Bad return status for module build on kernel: 5.3.11-rockchip64 (aarch64)
Consult /var/lib/dkms/zfs/0.8.2/build/make.log for more information.

  Building modules, stage 2.
  MODPOST 8 modules
FATAL: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'preempt_schedule_notrace'
make[4]: *** [scripts/Makefile.modpost:103: modules-modpost] Error 1

[neszt]

Also failed on Linux rock64 5.4.20-rockchip64:

root@rock64:~# dkms build zfs/0.8.3
Building module:
cleaning build area...
make -j4 KERNELRELEASE=5.4.20-rockchip64...................................................................................................(bad exit status: 2)
Error! Bad return status for module build on kernel: 5.4.20-rockchip64 (aarch64)
Consult /var/lib/dkms/zfs/0.8.3/build/make.log for more information.

root@rock64:~# tail -15 /var/lib/dkms/zfs/0.8.3/build/make.log 
  CC [M]  /var/lib/dkms/zfs/0.8.3/build/module/zfs/qat_crypt.o
  CC [M]  /var/lib/dkms/zfs/0.8.3/build/module/zfs/vdev_raidz_math_aarch64_neon.o
  CC [M]  /var/lib/dkms/zfs/0.8.3/build/module/zfs/vdev_raidz_math_aarch64_neonx2.o
  LD [M]  /var/lib/dkms/zfs/0.8.3/build/module/zfs/zfs.o
  Building modules, stage 2.
  MODPOST 8 modules
FATAL: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'preempt_schedule_notrace'
make[4]: *** [scripts/Makefile.modpost:94: __modpost] Error 1
make[3]: *** [Makefile:1609: modules] Error 2
make[3]: Leaving directory '/usr/src/linux-headers-5.4.20-rockchip64'
make[2]: *** [Makefile:30: modules] Error 2
make[2]: Leaving directory '/var/lib/dkms/zfs/0.8.3/build/module'
make[1]: *** [Makefile:805: all-recursive] Error 1
make[1]: Leaving directory '/var/lib/dkms/zfs/0.8.3/build'
make: *** [Makefile:674: all] Error 2

[Titaniumtown]

Same issue, Raspberry pi 4 4gb, running arch linux arm aarch64.
Linux kernel: 5.4.42-1-ARCH+

Interesting thing: it works fine on kernel 4.19

[satmandu]

If this is on your own system, then nobody is going to come after you for messing with the licenses on your modules.

So run this before building the zfs modules:

#!/bin/bash
set -ex
modify_zfs() {
        cd /usr/src/$(ls /usr/src | grep zfs | tail -n 1)
        ./autogen.sh
}
(sed -i 's/CDDL/GPL/g' /usr/src/zfs-*/META && modify_zfs) || true
exit 0

It worked for me.

zfs, 0.8.4, 5.4.44-v8+, aarch64: installed

[satmandu]

(This problem also goes away if you disable preempt on your kernel.)

See #8545 for more info.