When I built 4.3.0-7-generic on arm64(mustang) Wily with the following steps,
fakeroot debian/rules clean fakeroot debian/rules binary-generic by this compiler: ubuntu@ubuntu:~$ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/aarch64-linux-gnu/5/lto-wrapper Target: aarch64-linux-gnu Configured with: ../src/configure -v --with-pkgversion='Ubuntu 5.2.1-22ubuntu2' --with-bugurl=file:///usr/share/doc/gcc-5/README.Bugs --enable-languages=c,ada,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-5 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libquadmath --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-5-arm64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-5-arm64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-5-arm64 --with-arch-directory=aarch64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-multiarch --disable-werror --enable-checking=release --build=aarch64-linux-gnu --host=aarch64-linux-gnu --target=aarch64-linux-gnu the built image just works well: ubuntu@ubuntu:~$ uname -a Linux ubuntu 4.3.0-7-generic #18 SMP Tue Jan 12 10:19:24 EST 2016 aarch64 aarch64 aarch64 GNU/Linux But I can see the issue when booting a kernel from the following package[1]: http://launchpadlibrarian.net/230287220/linux- image-4.3.0-5-generic_4.3.0-5.16_arm64.deb It is a build environment issue instead of kernel issue, please see comments from Ard Biesheuvel <ard.biesheu...@linaro.org> [2]: RELA #275 is the relocation against ADRP instructions, which GCC should not emit anymore when -mcmodel=large is in effect. Can you confirm that the modules have been rebuilt with this config as well? Can you double check the GCC command line (with V=1) when doing 'make modules' to ensure that '-mcmodel=large' is being passed? Can you check with 'readelf -r' which objects still contain R_AARCH64_ADR_PREL_PG_HI21 relocations? I have checked the gcc flag in my building environment, and '-mcmodel=large' is passed, and CONFIG_ARM64_ERRATUM_843419 is enabled too. I don't know how the image in [1] is built, so could anyone check the build environment for this building? [1] http://launchpadlibrarian.net/230287220/linux-image-4.3.0-5-generic_4.3.0-5.16_arm64.deb [2] http://www.spinics.net/lists/arm-kernel/msg449991.html On Tue, Jan 12, 2016 at 7:47 PM, Raghuram Kota <raghuram.k...@canonical.com> wrote: > ** Tags added: hs-arm64 > > -- > You received this bug notification because you are subscribed to linux > in Ubuntu. > https://bugs.launchpad.net/bugs/1533009 > > Title: > arm64: "unsupported RELA relocation" > > Status in linux package in Ubuntu: > Confirmed > > Bug description: > linux-image-4.3.0-5-generic 4.3.0-5.16 arm64 fails to load modules > (and therefore boot). It emits messages like the following for each > attempted module load: > > [ 2.156817] module libahci: unsupported RELA relocation: 275 > > This is reminiscent of LP: #1502946 - except that fix appears to still > be in-tact. What has changed, however, is the build environment. If I > rebuild the same kernel source in a wily chroot, it boots fine. > > Marking "Confirmed" because Paulo Pisatti reported this to me, and I > reproduced. > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1533009/+subscriptions -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1533009 Title: arm64: "unsupported RELA relocation" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1533009/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs