Re: [PATCH 5.15 00/72] 5.15.13-rc2 review

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Wed, Jan 05, 2022 at 06:32:43PM +0530, Jeffrin Jose T wrote:
> On Tue, 2022-01-04 at 08:41 +0100, Greg Kroah-Hartman wrote:
> > This is the start of the stable review cycle for the 5.15.13 release.
> > There are 72 patches in this series, all will be posted as a response
> > to this one.  If anyone has any issues with these being applied, please
> > let me know.
> > 
> > Responses should be made by Thu, 06 Jan 2022 07:38:29 +0000.
> > Anything received after that time might be too late.
> > 
> > The whole patch series can be found in one patch at:
> >         
> > https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.15.13-rc2.gz
> > or in the git tree and branch at:
> >         git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-
> > stable-rc.git linux-5.15.y
> > and the diffstat can be found below.
> > 
> > thanks,
> > 
> > greg k-h
> > 
>  hello,
> 
> There was a compilation error....
> 
> -----------x--------------x------------------x--
> MODPOST vmlinux.symvers
>   MODINFO modules.builtin.modinfo
>   GEN     modules.builtin
> BTF: .tmp_vmlinux.btf: pahole (pahole) is not available
> Failed to generate BTF for vmlinux
> Try to disable CONFIG_DEBUG_INFO_BTF
> make: *** [Makefile:1183: vmlinux] Error 1

Is this a regression?  If so, what commit caused this?

> i did CONFIG_DEBUG_INFO_BTF=n  in .config and then compilation was
> success.

Or you can install pahole, right?  That's a requirement for that build
option I think.

thanks,

greg k-h