Re: linux-next: runtime warnings after merge of the bpf-next tree

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Hi Daniel,

On Wed, 31 Jan 2024 20:55:43 -0700 Daniel Xu <dxu@xxxxxxxxx> wrote:
>
> Hi Stephen,
> 
> Thanks for the report.
> 
> On Thu, Feb 01, 2024 at 02:23:48PM +1100, Stephen Rothwell wrote:
> > Hi all,
> > 
> > After merging the bpf-next tree, today's linux-next build (powerpc
> > pseries_le_defconfig) produced these runtime warnings in my qemu boot  
> 
> I can't quite find that config in-tree. Mind giving me a pointer?

Its a constructed config ("make pseries_le_config")

$ grep BPF .config
CONFIG_BPF=y
CONFIG_HAVE_EBPF_JIT=y
CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y
# BPF subsystem
CONFIG_BPF_SYSCALL=y
CONFIG_BPF_JIT=y
# CONFIG_BPF_JIT_ALWAYS_ON is not set
CONFIG_BPF_JIT_DEFAULT_ON=y
CONFIG_BPF_UNPRIV_DEFAULT_OFF=y
# CONFIG_BPF_PRELOAD is not set
CONFIG_BPF_LSM=y
# end of BPF subsystem
CONFIG_CGROUP_BPF=y
CONFIG_NETFILTER_BPF_LINK=y
CONFIG_NET_CLS_BPF=m
CONFIG_NET_ACT_BPF=m
# CONFIG_BPF_STREAM_PARSER is not set
# HID-BPF support
# end of HID-BPF support
CONFIG_BPF_EVENTS=y
CONFIG_TEST_BPF=m

> My guess is the config does not enable CONFIG_DEBUG_INFO_BTF which
> causes compilation to use the dummy definitions for BTF_KFUNCS_START().

Correct, see above.

-- 
Cheers,
Stephen Rothwell

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