linux-kernel - Re: linux-next: manual merge of the kspp tree with the bpf-next tree

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Date:   Tue, 27 Sep 2022 12:30:14 -0700
From:   Kees Cook <keescook@...omium.org>
To:     broonie@...nel.org
Cc:     Daniel Borkmann <daniel@...earbox.net>,
        Jiri Olsa <jolsa@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Sami Tolvanen <samitolvanen@...gle.com>,
        Thomas Gleixner <tglx@...utronix.de>
Subject: Re: linux-next: manual merge of the kspp tree with the bpf-next tree

On Tue, Sep 27, 2022 at 08:08:11PM +0100, broonie@...nel.org wrote:
> Hi all,
> 
> Today's linux-next merge of the kspp tree got a conflict in:
> 
>   tools/objtool/check.c
> 
> between commit:
> 
>   9440155ccb948 ("ftrace: Add HAVE_DYNAMIC_FTRACE_NO_PATCHABLE")
> 
> from the bpf-next tree and commit:
> 
>   3c68a92d17add ("objtool: Disable CFI warnings")
> 
> from the kspp tree.
> 
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
> 
> diff --cc tools/objtool/check.c
> index fcc4d8ea8cec3,48e18737a2d18..0000000000000
> --- a/tools/objtool/check.c
> +++ b/tools/objtool/check.c
> @@@ -4124,7 -4118,7 +4128,8 @@@ static int validate_ibt(struct objtool_
>   		    !strcmp(sec->name, "__ex_table")			||
>   		    !strcmp(sec->name, "__jump_table")			||
>   		    !strcmp(sec->name, "__mcount_loc")			||
>  -		    !strcmp(sec->name, ".kcfi_traps"))
> ++		    !strcmp(sec->name, ".kcfi_traps"))			||
>  +		    strstr(sec->name, "__patchable_function_entries"))
>   			continue;
>   
>   		list_for_each_entry(reloc, &sec->reloc->reloc_list, list)

Thanks, yes; this matches what I had when I did a test merge yesterday
too.

-- 
Kees Cook