On Mon, Apr 26, 2021 at 02:12:20PM +0200, Michal Suchánek wrote:

On Mon, Apr 26, 2021 at 01:32:15PM +0200, Michal Suchánek wrote:

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On Sun, Apr 25, 2021 at 01:15:45PM +0200, Michal Suchánek wrote:

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On Fri, Apr 23, 2021 at 07:55:28PM +0200, Michal Suchánek wrote:

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On Fri, Apr 23, 2021 at 07:41:29AM -0700, Yonghong Song wrote:

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On 4/23/21 6:05 AM, Michal Suchánek wrote:

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Hello,

I see this build error in linux-next (config attached).

[ 4939s]   LD      vmlinux
[ 4959s]   BTFIDS  vmlinux
[ 4959s] FAILED unresolved symbol cubictcp_state
[ 4960s] make[1]: ***
[/home/abuild/rpmbuild/BUILD/kernel-vanilla-5.12~rc8.next.20210422/linux-5.12-rc8-next-20210422/Makefile:1277:
vmlinux] Error 255
[ 4960s] make: *** [../Makefile:222: __sub-make] Error 2

Looks like you have DYNAMIC_FTRACE config option enabled already.
Could you try a later version of pahole?

Is this requireent new?

I have pahole 1.20, and master does build without problems.

If newer version is needed can a check be added?

With dwarves 1.21 some architectures are fixed and some report other
missing symbol. Definitely an improvenent.

I see some new type support was added so it makes sense if that type is
used the new dwarves are needed.

Ok, here is the current failure with dwarves 1.21 on 5.12:

[ 2548s]   LD      vmlinux
[ 2557s]   BTFIDS  vmlinux
[ 2557s] FAILED unresolved symbol vfs_truncate
[ 2558s] make[1]: ***
[/home/abuild/rpmbuild/BUILD/kernel-kvmsmall-5.12.0/linux-5.12/Makefile:1213:
vmlinux] Error 255

Any idea where this one is coming from?

Attaching a complete config

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Thanks

Michal