This is likely caused by the fact that the Android AArch64 toolchain uses -fpic by default. Could you try adding -fno-pic to the CFLAGS?
> On 30 mei 2016, at 12:21, Arend Van Spriel <[email protected]> > wrote: > > I got myself an arm64 HiKey board from LeMaker and build an Android AOSP > image for it (see [1]). For development I would like to use > CONFIG_MODULES. However, when I try to insmod the build module I get: > > [ 287.903653] module cfg80211: overflow in relocation type 261 val > ffffffbffc006530 > > Looking AArch64 ELF documentation [2], section 4.6.5, it has: > code|name |operation |overflow check | > 261 |R_AARCH64_PREL32|S + A - P |-2^31 <= X < 2^32| > > So basically the highest 32 bits should all be one and so ffffffbf is > invalid. From what I could find searching internet it could be an issue > with linker options so I build kernel and modules with V=1. Here the > linker invocation for them: > > + aarch64-linux-android-ld -EL -p --no-undefined -X --build-id -o vmlinux \ > -T ./arch/arm64/kernel/vmlinux.lds arch/arm64/kernel/head.o > init/built-in.o \ > --start-group usr/built-in.o arch/arm64/kernel/built-in.o > arch/arm64/mm/built-in.o \ > arch/arm64/net/built-in.o arch/arm64/kvm/built-in.o > arch/arm64/crypto/built-in.o \ > ./drivers/firmware/efi/libstub/lib.a kernel/built-in.o certs/built-in.o > mm/built-in.o \ > fs/built-in.o ipc/built-in.o security/built-in.o crypto/built-in.o > block/built-in.o \ > arch/arm64/lib/lib.a lib/lib.a arch/arm64/lib/built-in.o lib/built-in.o > drivers/built-in.o \ > sound/built-in.o firmware/built-in.o net/built-in.o virt/built-in.o > --end-group .tmp_kallsyms2.o > > aarch64-linux-android-ld -EL -r -T ./scripts/module-common.lds > --build-id \ > -o net/wireless/cfg80211.ko net/wireless/cfg80211.o > net/wireless/cfg80211.mod.o > > Attached are vmlinux.lds and module-common.lds. I also tried taking > upstream arch/arm64/kernel/module.lds in hikey-linaro tree. If someone > can give a hint or educated guess at what to try it would be appreciated. > > Regards, > Arend > > [1] https://source.android.com/source/devices.html#building-kernel > [2] > http://infocenter.arm.com/help/topic/com.arm.doc.ihi0056b/IHI0056B_aaelf64.pdf > <module-common.lds> > <vmlinux.lds>
