Messages in this thread | | | Subject | Re: [kbuild-all] Re: [ammarfaizi2-block:stable/linux-stable-rc/queue/5.15 146/150] kernel/futex.o: warning: objtool: futex_atomic_op_inuser()+0xb8: unreachable instruction | From | "Chen, Rong A" <> | Date | Thu, 12 May 2022 17:30:20 +0800 |
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On 5/12/2022 4:17 PM, Peter Zijlstra wrote: > On Thu, May 12, 2022 at 10:00:33AM +0800, kernel test robot wrote: >> tree: https://github.com/ammarfaizi2/linux-block stable/linux-stable-rc/queue/5.15 >> head: 305e905f70311e1b49cc730931a19c3e364f4d8c >> commit: 45dc9d706619a6814e4063d5431483f94badb5a1 [146/150] x86: Add straight-line-speculation mitigation >> config: x86_64-randconfig-m001-20220509 (https://download.01.org/0day-ci/archive/20220512/202205120956.qLpGQurX-lkp@intel.com/config) >> compiler: gcc-11 (Debian 11.2.0-20) 11.2.0 >> reproduce (this is a W=1 build): >> # https://github.com/ammarfaizi2/linux-block/commit/45dc9d706619a6814e4063d5431483f94badb5a1 >> git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block >> git fetch --no-tags ammarfaizi2-block stable/linux-stable-rc/queue/5.15 >> git checkout 45dc9d706619a6814e4063d5431483f94badb5a1 >> # save the config file >> mkdir build_dir && cp config build_dir/.config >> make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash >> >> If you fix the issue, kindly add following tag as appropriate >> Reported-by: kernel test robot <lkp@intel.com> >> >> All warnings (new ones prefixed by >>): >> >>>> kernel/futex.o: warning: objtool: futex_atomic_op_inuser()+0xb8: unreachable instruction >> -- >>>> mm/madvise.o: warning: objtool: madvise_behavior()+0x69: unreachable instruction >> -- >>>> kernel/bpf/btf.o: warning: objtool: __btf_resolve_size()+0x72: unreachable instruction > > Would it be possible for the robot to include the output of this script:
Hi Peter,
Thanks for your advice, we'll support it asap.
Best Regards, Rong Chen
> > https://lkml.kernel.org/r/3eb3f091fd6bd9caba50392ceab98ce756804f3b.1650578171.git.jpoimboe@redhat.com > > for each objtool warning it gives (as run on vmlinux.o): > > $ ./scripts/objdump-func build-output/vmlinux.o futex_atomic_op_inuser > $ ./scripts/objdump-func build-output/vmlinux.o madvise_behavior > $ ./scripts/objdump-func build-output/vmlinux.o __btf_resolve_size > > etc.. that would make it easier to see what the problem is without > having to reproduce the build. > > A super wild guess; but try this commit: > > 1ffbe4e935f9 ("objtool: Default ignore INT3 for unreachable") > > _______________________________________________ > kbuild-all mailing list -- kbuild-all@lists.01.org > To unsubscribe send an email to kbuild-all-leave@lists.01.org >
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