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Date: Sun, 11 Aug 2024 17:27:40 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Hardik Garg <hargar@linux.microsoft.com>
Cc: stable@vger.kernel.org, chen.dylane@gmail.com, t-anchiang@microsoft.com
Subject: Re: bpf tool build failure in latest stable-rc 6.1.103-rc3 due to
 missing backport
Message-ID: <2024081130-backlight-preseason-5a9f@gregkh>
References: <1722571545-7009-1-git-send-email-hargar@linux.microsoft.com>
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In-Reply-To: <1722571545-7009-1-git-send-email-hargar@linux.microsoft.com>

On Thu, Aug 01, 2024 at 09:05:45PM -0700, Hardik Garg wrote:
> bpf tool build fails for the latest stable-rc 6.1.103-rc3
> The error details are as follows:
> prog.c: In function 'load_with_options':
> prog.c:1710:23: warning: implicit declaration of function 'create_and_mount_bpffs_dir' [-Wimplicit-function-declaration]
>  1710 |                 err = create_and_mount_bpffs_dir(pinmaps);
>       |                       ^~~~~~~~~~~~~~~~~~~~~~~~~~
>   CC      struct_ops.o
>   CC      tracelog.o
>   CC      xlated_dumper.o
>   CC      jit_disasm.o
>   CC      disasm.o
>   LINK    bpftool
> /usr/bin/ld: prog.o: in function `load_with_options':
> prog.c:(.text+0x346a): undefined reference to `create_and_mount_bpffs_dir'
> 
> The commit causing this failure in 6.1.103-rc3: bc1605fcb33bf7a300cd3ac5c409a16bda1626ba
> 
> It appears that the commit from the 6.10 series is missing in this release candidate:
> 478a535ae54a ("bpftool: Mount bpffs on provided dir instead of parent dir")

That commit does not apply to 6.1.y, sorry.

greg k-h