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. I can reproduce with your .config, but make 'defconfig' works, so I guess it's some config option issue, I'll check later today jirka
