Hello Hengqi, On Fri, May 31, 2024 at 10:17:53AM +0800, Hengqi Chen wrote: > Hi Tony, > > On Fri, May 31, 2024 at 9:30 AM Tony Ambardar <tony.ambardar@xxxxxxxxx> wrote: > > > > Hello, > > > > For some time now I'm seeing multiple issues during BTF generation while > > building recent kernels targeting mips64el, and would appreciate some help > > to understand and fix the problems. > > > SNIP > > > > > CC [M] net/ipv6/netfilter/nft_fib_ipv6.mod.o > > > CC [M] net/ipv6/netfilter/ip6t_REJECT.mod.o > > > CC [M] net/psample/psample.mod.o > > > LD [M] crypto/cmac.ko > > > BTF [M] crypto/cmac.ko > > > die__process: DW_TAG_compile_unit, DW_TAG_type_unit, DW_TAG_partial_unit > > > or DW_TAG_skeleton_unit expected got member (0xd)! > > The issue seems to be related to elfutils. Have you tried build from > the latest elfutils source ? > I saw the latest MIPS backend in elfutils already implemented the > reloc_simple_type hook. Good idea. I tried rebuilding elfutils from the latest upstream commit: https://sourceware.org/git/?p=elfutils.git;a=commit;h=935ee131cf7c87296df9412b7e3370085e7c7508 I then linked this elfutils with pahole built from the latest pahole/next: https://git.kernel.org/pub/scm/devel/pahole/pahole.git/commit/?h=next&id=a9ae414fef421bdeb13ff7ffe13271e1e4f58993 I also confirmed resolve_btfids links to the new elfutils, and then rebuilt the kernel with the same config. Unfortunately, the warnings/errors from resolve_btfids and pahole still occur. > SNIP > > > > I'd be grateful if some of the BTF/pahole experts could please review this > > issue and share next steps or other details I might provide. > > > > Thanks, > > Tony Ambardar > > > > Link: https://lore.kernel.org/all/202401211357.OCX9yllM-lkp@xxxxxxxxx/ [1] > > Link: https://github.com/acmel/dwarves/issues/45 [2] > > Cheers, > Hengqi Thanks for the suggestion, Tony
