Re: [PATCH] objtool: Add missing endianess conversion when checking annations

[Sven Schnelle]

Peter Zijlstra <peterz@xxxxxxxxxxxxx> writes:

> On Wed, Jul 02, 2025 at 10:30:51AM +0200, Sven Schnelle wrote:
>> Sven Schnelle <svens@xxxxxxxxxxxxx> writes:
>> 
>> > cross-compiling a kernel for x86 on s390 produces the following warning:
>> >
>> > drivers/mfd/mc13xxx-core.o: warning: objtool: mc13xxx_reg_rmw+0xc: Unknown annotation type: 50331648
>> >
>> > Fix this by adding the required endianess conversion.
>> >
>> > Fixes: 2116b349e29a ("objtool: Generic annotation infrastructure")
>> > Reported-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
>> > Signed-off-by: Sven Schnelle <svens@xxxxxxxxxxxxx>
>> > ---
>> >  tools/objtool/check.c | 2 +-
>> >  1 file changed, 1 insertion(+), 1 deletion(-)
>> >
>> > diff --git a/tools/objtool/check.c b/tools/objtool/check.c
>> > index b21b12ec88d9..35fb871b2c62 100644
>> > --- a/tools/objtool/check.c
>> > +++ b/tools/objtool/check.c
>> > @@ -2316,7 +2316,7 @@ static int read_annotate(struct objtool_file *file,
>> >  	}
>> >  
>> >  	for_each_reloc(sec->rsec, reloc) {
>> > -		type = *(u32 *)(sec->data->d_buf + (reloc_idx(reloc) * sec->sh.sh_entsize) + 4);
>> > +		type = bswap_if_needed(file->elf, *(u32 *)(sec->data->d_buf + (reloc_idx(reloc) * sec->sh.sh_entsize) + 4));
>> >  
>> >  		offset = reloc->sym->offset + reloc_addend(reloc);
>> >  		insn = find_insn(file, reloc->sym->sec, offset);
>> 
>> Gentle ping?
>
> Oh, I missed there were two of these. I merged this:
>
>  https://lkml.kernel.org/r/175137563313.406.6298042704364318030.tip-bot2@tip-bot2

Ok, thanks!