objtool: Add missing endian conversion to read_annotate()

Trying to compile an x86 kernel on big endian results in this error:

net/ipv4/netfilter/iptable_nat.o: warning: objtool: iptable_nat_table_init+0x150: Unknown annotation type: 50331648
make[5]: *** [scripts/Makefile.build:287: net/ipv4/netfilter/iptable_nat.o] Error 255

Reason is a missing endian conversion in read_annotate().
Add the missing conversion to fix this.

Fixes: 2116b349e29a ("objtool: Generic annotation infrastructure")
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20250630131230.4130185-1-hca@linux.ibm.com

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index f23bdda737aaa5e0a104540402d18e8861573ab9..d967ac001498bb716cb7accef43aec973829e67f 100644 (file)
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -2318,6 +2318,7 @@ 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, type);
 
                offset = reloc->sym->offset + reloc_addend(reloc);
                insn = find_insn(file, reloc->sym->sec, offset);