On Thu, 6 Jun 2019 at 11:40, Rolf Eike Beer <eb@xxxxxxxxx> wrote: > > Ard Biesheuvel wrote: > > On Thu, 6 Jun 2019 at 09:50, Rolf Eike Beer <eb@xxxxxxxxx> wrote: > > > Am Donnerstag, 6. Juni 2019, 09:38:41 CEST schrieb Rolf Eike Beer: > > > > Greg KH wrote: > > > > > On Wed, Jun 05, 2019 at 05:19:40PM +0200, Rolf Eike Beer wrote: > > > > > > I decided to dig out a toy project which uses a DragonBoard 410c. > > > > > > This > > > > > > has > > > > > > been "running" with kernel 4.9, which I would keep this way for > > > > > > unrelated > > > > > > reasons. The vanilla 4.9 kernel wasn't bootable back then, but it > > > > > > was > > > > > > buildable, which was good enough. > > > > > > > > > > > > Upgrading the kernel to 4.9.180 caused the boot to suddenly fail: > > > > > > > > > > > > aarch64-unknown-linux-gnueabi-ld: > > > > > > ./drivers/firmware/efi/libstub/lib.a(arm64- stub.stub.o): in > > > > > > function > > > > > > `handle_kernel_image': > > > > > > /tmp/e2/build/linux-4.9.139/drivers/firmware/efi/libstub/arm64-stub. > > > > > > c:63 > > > > > > > > > > > > undefined reference to `__efistub__GLOBAL_OFFSET_TABLE_' > > > > > > aarch64-unknown-linux-gnueabi-ld: > > > > > > ./drivers/firmware/efi/libstub/lib.a(arm64- stub.stub.o): relocation > > > > > > R_AARCH64_ADR_PREL_PG_HI21 against symbol > > > > > > `__efistub__GLOBAL_OFFSET_TABLE_' which may bind externally can not > > > > > > be > > > > > > used when making a shared object; recompile with -fPIC > > > > > > /tmp/e2/build/linux-4.9.139/drivers/firmware/efi/libstub/arm64-stub. > > > > > > c:63 > > > > > > > > > > > > (.init.text+0xc): dangerous relocation: unsupported relocation > > > > > > /tmp/e2/build/linux-4.9.139/Makefile:1001: recipe for target > > > > > > 'vmlinux' > > > > > > failed -make[1]: *** [vmlinux] Error 1 > > > > > > > > > > > > This is caused by commit 27b5ebf61818749b3568354c64a8ec2d9cd5ecca > > > > > > from > > > > > > linux-4.9.y (which is 91ee5b21ee026c49e4e7483de69b55b8b47042be), > > > > > > reverting > > > > > > this commit fixes the build. > > > > > > > > > > > > This happens with vanilla binutils 2.32 and gcc 8.3.0 as well as > > > > > > 9.1.0. > > > > > > See > > > > > > the attached .config for reference. > > > > > > > > > > > > If you have questions or patches just ping me. > > > > > > > > > > Does Linus's latest tree also fail for you (or 5.1)? > > > > > > > > 5.1.7 with the same config as before and "make olddefconfig" builds for > > > > me. > > > > > > Just for the fun of it: both 4.19 and 4.19.48 also work. > > > Could you please check whether patch > > 60f38de7a8d4e816100ceafd1b382df52527bd50 applies cleanly, and whether > > it fixes the problem? Thanks. > > The part in drivers/firmware/efi/libstub/arm-stub.c needs to be applied by > hand, but afterwards things build fine. > Thanks. I'll send out a backport.
