We've also seen issues with Mellanox hardware on 4.19, like this one: * https://www.mail-archive.com/netdev@xxxxxxxxxxxxxxx/msg253346.html On Thu, Jan 10, 2019 at 6:12 AM Ignat Korchagin <ignat@xxxxxxxxxxxxxx> wrote: > > Thank you! > > > But really, you all should be using 4.19 at this point in time :) > > We're trying, but it crashes for us in netfilter code :(. Currently > we're applying a series of patches from the net-dev tree to the > nf_conncount code to see if it fixes the issues. Will definitely make > sure they go to stable, when confirming the issue is fixed. > > Regards, > Ignat > > On Thu, Jan 10, 2019 at 2:01 PM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > On Tue, Jan 08, 2019 at 06:52:35PM +0000, Ignat Korchagin wrote: > > > Good day, > > > > > > We have started to compile libbpf as part of our Linux compilation > > > build plan, however libbpf fails to cross-compile for arm64 on Linux > > > 4.14, but succeeds on Linux 4.19 tree. > > > > > > We compile libbpf with the following command: > > > make -C <whatever>/linux-4.14.91/tools/lib/bpf ARCH=arm64 > > > CROSS_COMPILE=aarch64-linux-gnu- install > > > > > > And get the below output on 4.14 tree: > > > Auto-detecting system features: > > > ... libelf: [ on ] > > > ... bpf: [ on ] > > > > > > CC /cfsetup_build/build/arm64/libbpf/libbpf.o > > > CC /cfsetup_build/build/arm64/libbpf/bpf.o > > > LD /cfsetup_build/build/arm64/libbpf/libbpf-in.o > > > ld: /cfsetup_build/build/arm64/libbpf/libbpf.o: Relocations in generic > > > ELF (EM: 183) > > > ld: /cfsetup_build/build/arm64/libbpf/libbpf.o: Relocations in generic > > > ELF (EM: 183) > > > ld: /cfsetup_build/build/arm64/libbpf/libbpf.o: Relocations in generic > > > ELF (EM: 183) > > > ld: /cfsetup_build/build/arm64/libbpf/libbpf.o: Relocations in generic > > > ELF (EM: 183) > > > ld: /cfsetup_build/build/arm64/libbpf/libbpf.o: Relocations in generic > > > ELF (EM: 183) > > > ld: /cfsetup_build/build/arm64/libbpf/libbpf.o: Relocations in generic > > > ELF (EM: 183) > > > /cfsetup_build/build/arm64/libbpf/libbpf.o: error adding symbols: File > > > in wrong format > > > /cfsetup_build/build/linux-4.14.91/tools/build/Makefile.build:144: > > > recipe for target '/cfsetup_build/build/arm64/libbpf/libbpf-in.o' > > > failed > > > make[2]: *** [/cfsetup_build/build/arm64/libbpf/libbpf-in.o] Error 1 > > > Makefile:158: recipe for target > > > '/cfsetup_build/build/arm64/libbpf/libbpf-in.o' failed > > > make[1]: *** [/cfsetup_build/build/arm64/libbpf/libbpf-in.o] Error 2 > > > > > > Backporting the following commit fixed the build: > > > 7ed1c1901fe52e6c5828deb155920b44b0adabb1: tools: fix cross-compile var > > > clobbering > > > > > > Can we have it officially applied to the Linux 4.14 tree, please? > > > > Now queued up, thanks. > > > > But really, you all should be using 4.19 at this point in time :) > > > > thanks, > > > > greg k-h
