* Cross-compiling libbpf from Linux 4.14 tree @ 2019-01-08 18:52 Ignat Korchagin 2019-01-10 14:01 ` Greg KH 0 siblings, 1 reply; 5+ messages in thread From: Ignat Korchagin @ 2019-01-08 18:52 UTC (permalink / raw) To: stable; +Cc: Ivan Babrou, Daniel Dao, Alex Forster 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? Regards, Ignat ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Cross-compiling libbpf from Linux 4.14 tree 2019-01-08 18:52 Cross-compiling libbpf from Linux 4.14 tree Ignat Korchagin @ 2019-01-10 14:01 ` Greg KH 2019-01-10 14:12 ` Ignat Korchagin 0 siblings, 1 reply; 5+ messages in thread From: Greg KH @ 2019-01-10 14:01 UTC (permalink / raw) To: Ignat Korchagin; +Cc: stable, Ivan Babrou, Daniel Dao, Alex Forster 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 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Cross-compiling libbpf from Linux 4.14 tree 2019-01-10 14:01 ` Greg KH @ 2019-01-10 14:12 ` Ignat Korchagin 2019-01-10 16:03 ` Ivan Babrou 0 siblings, 1 reply; 5+ messages in thread From: Ignat Korchagin @ 2019-01-10 14:12 UTC (permalink / raw) To: Greg KH; +Cc: stable, Ivan Babrou, Daniel Dao, Alex Forster 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@linuxfoundation.org> 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 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Cross-compiling libbpf from Linux 4.14 tree 2019-01-10 14:12 ` Ignat Korchagin @ 2019-01-10 16:03 ` Ivan Babrou 2019-01-10 16:13 ` Greg KH 0 siblings, 1 reply; 5+ messages in thread From: Ivan Babrou @ 2019-01-10 16:03 UTC (permalink / raw) To: Ignat Korchagin; +Cc: Greg KH, stable, Daniel Dao, Alex Forster We've also seen issues with Mellanox hardware on 4.19, like this one: * https://www.mail-archive.com/netdev@vger.kernel.org/msg253346.html On Thu, Jan 10, 2019 at 6:12 AM Ignat Korchagin <ignat@cloudflare.com> 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@linuxfoundation.org> 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 ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Cross-compiling libbpf from Linux 4.14 tree 2019-01-10 16:03 ` Ivan Babrou @ 2019-01-10 16:13 ` Greg KH 0 siblings, 0 replies; 5+ messages in thread From: Greg KH @ 2019-01-10 16:13 UTC (permalink / raw) To: Ivan Babrou; +Cc: Ignat Korchagin, stable, Daniel Dao, Alex Forster On Thu, Jan 10, 2019 at 08:03:53AM -0800, Ivan Babrou wrote: > We've also seen issues with Mellanox hardware on 4.19, like this one: > > * https://www.mail-archive.com/netdev@vger.kernel.org/msg253346.html Ugh, ok, thanks for testing and letting people know about this type of thing. Sorry it's causing problems. I wonder why the "normal" netfilter testing didn't catch your issues, that might be good to add to the test suite after it's all done... thanks, greg k-h ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2019-01-10 16:14 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2019-01-08 18:52 Cross-compiling libbpf from Linux 4.14 tree Ignat Korchagin 2019-01-10 14:01 ` Greg KH 2019-01-10 14:12 ` Ignat Korchagin 2019-01-10 16:03 ` Ivan Babrou 2019-01-10 16:13 ` Greg KH
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