On Wed, Dec 30, 2020 at 11:19:36AM -0300, Arnaldo Carvalho de Melo wrote: > Em Wed, Dec 30, 2020 at 02:28:52PM +0100, Jiri Olsa escreveu: > > On Wed, Dec 30, 2020 at 02:28:02PM +0100, Jiri Olsa wrote: > > > On Wed, Dec 30, 2020 at 10:03:37AM +0100, Jiri Olsa wrote: > > > > On Tue, Dec 29, 2020 at 11:28:35PM +0000, Qais Yousef wrote: > > > > > Hi Jiri > > > > > > > > > > On 12/29/20 18:34, Jiri Olsa wrote: > > > > > > On Tue, Dec 29, 2020 at 03:13:52PM +0000, Qais Yousef wrote: > > > > > > > Hi > > > > > > > > > > > > > > When I enable CONFIG_DEBUG_INFO_BTF I get the following error in the BTFIDS > > > > > > > stage > > > > > > > > > > > > > > FAILED unresolved symbol udp6_sock > > > > > > > > > > > > > > I cross compile for arm64. My .config is attached. > > > > > > > > > > > > > > I managed to reproduce the problem on v5.9 and v5.10. Plus 5.11-rc1. > > > > > > > > > > > > > > Have you seen this before? I couldn't find a specific report about this > > > > > > > problem. > > > > > > > > > > > > > > Let me know if you need more info. > > > > > > > > > > > > hi, > > > > > > this looks like symptom of the gcc DWARF bug we were > > > > > > dealing with recently: > > > > > > > > > > > > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97060 > > > > > > https://lore.kernel.org/lkml/CAE1WUT75gu9G62Q9uAALGN6vLX=o7vZ9uhqtVWnbUV81DgmFPw@xxxxxxxxxxxxxx/#r > > > > > > > > > > > > what pahole/gcc version are you using? > > > > > > > > > > I'm on gcc 9.3.0 > > > > > > > > > > aarch64-linux-gnu-gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0 > > > > > > > > > > I was on pahole v1.17. I moved to v1.19 but I still see the same problem. > > There are some changes post v1.19 in the git repo: > > [acme@five pahole]$ git log --oneline v1.19.. > b688e35970600c15 (HEAD -> master) btf_encoder: fix skipping per-CPU variables at offset 0 > 8c009d6ce762dfc9 btf_encoder: fix BTF variable generation for kernel modules > b94e97e015a94e6b dwarves: Fix compilation on 32-bit architectures > 17df51c700248f02 btf_encoder: Detect kernel module ftrace addresses > 06ca639505fc56c6 btf_encoder: Use address size based on ELF's class > aff60970d16b909e btf_encoder: Factor filter_functions function > 1e6a3fed6e52d365 (quaco/master) rpm: Fix changelog date > [acme@five pahole]$ > > But I think these won't matter in this case :-\ yep, it did not.. I used the latest dwarves code jirka
