Merge tag 'objtool_urgent_for_v5.15_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Borislav Petkov:
- Remove an extra section.len member in favour of section.sh_size
- Align .altinstructions section creation with the kernel's by creating
them with entry size of 0
- Fix objtool to convert a reloc symbol to a section offset and not to
not warn about not knowing how
* tag 'objtool_urgent_for_v5.15_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Remove redundant 'len' field from struct section
objtool: Make .altinstructions section entry size consistent
objtool: Remove reloc symbol type checks in get_alt_entry()
diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index bc82105..0893436 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -684,7 +684,7 @@
sec = find_section_by_name(elf, ".altinstructions");
if (!sec) {
sec = elf_create_section(elf, ".altinstructions",
- SHF_ALLOC, size, 0);
+ SHF_ALLOC, 0, 0);
if (!sec) {
WARN_ELF("elf_create_section");
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index e5947fb..06b5c16 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -292,7 +292,7 @@
!strcmp(sec->name, ".entry.text"))
sec->noinstr = true;
- for (offset = 0; offset < sec->len; offset += insn->len) {
+ for (offset = 0; offset < sec->sh.sh_size; offset += insn->len) {
insn = malloc(sizeof(*insn));
if (!insn) {
WARN("malloc failed");
@@ -307,7 +307,7 @@
insn->offset = offset;
ret = arch_decode_instruction(file->elf, sec, offset,
- sec->len - offset,
+ sec->sh.sh_size - offset,
&insn->len, &insn->type,
&insn->immediate,
&insn->stack_ops);
@@ -349,9 +349,9 @@
{
struct instruction *insn = NULL;
unsigned int offset;
- unsigned int end = (sec->len > 10) ? sec->len - 10 : 0;
+ unsigned int end = (sec->sh.sh_size > 10) ? sec->sh.sh_size - 10 : 0;
- for (offset = sec->len - 1; offset >= end && !insn; offset--)
+ for (offset = sec->sh.sh_size - 1; offset >= end && !insn; offset--)
insn = find_insn(file, sec, offset);
return insn;
@@ -389,7 +389,7 @@
insn = find_insn(file, reloc->sym->sec, reloc->addend);
if (insn)
insn = list_prev_entry(insn, list);
- else if (reloc->addend == reloc->sym->sec->len) {
+ else if (reloc->addend == reloc->sym->sec->sh.sh_size) {
insn = find_last_insn(file, reloc->sym->sec);
if (!insn) {
WARN("can't find unreachable insn at %s+0x%x",
@@ -424,7 +424,7 @@
insn = find_insn(file, reloc->sym->sec, reloc->addend);
if (insn)
insn = list_prev_entry(insn, list);
- else if (reloc->addend == reloc->sym->sec->len) {
+ else if (reloc->addend == reloc->sym->sec->sh.sh_size) {
insn = find_last_insn(file, reloc->sym->sec);
if (!insn) {
WARN("can't find reachable insn at %s+0x%x",
@@ -1561,14 +1561,14 @@
return -1;
}
- if (sec->len % sizeof(struct unwind_hint)) {
+ if (sec->sh.sh_size % sizeof(struct unwind_hint)) {
WARN("struct unwind_hint size mismatch");
return -1;
}
file->hints = true;
- for (i = 0; i < sec->len / sizeof(struct unwind_hint); i++) {
+ for (i = 0; i < sec->sh.sh_size / sizeof(struct unwind_hint); i++) {
hint = (struct unwind_hint *)sec->data->d_buf + i;
reloc = find_reloc_by_dest(file->elf, sec, i * sizeof(*hint));
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index 8676c75..b18f005 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -286,10 +286,9 @@
return -1;
}
}
- sec->len = sec->sh.sh_size;
if (sec->sh.sh_flags & SHF_EXECINSTR)
- elf->text_size += sec->len;
+ elf->text_size += sec->sh.sh_size;
list_add_tail(&sec->list, &elf->sections);
elf_hash_add(section, &sec->hash, sec->idx);
@@ -734,8 +733,8 @@
data->d_size = strlen(str) + 1;
data->d_align = 1;
- len = strtab->len;
- strtab->len += data->d_size;
+ len = strtab->sh.sh_size;
+ strtab->sh.sh_size += data->d_size;
strtab->changed = true;
return len;
@@ -790,9 +789,9 @@
data->d_align = 1;
data->d_type = ELF_T_SYM;
- sym->idx = symtab->len / sizeof(sym->sym);
+ sym->idx = symtab->sh.sh_size / sizeof(sym->sym);
- symtab->len += data->d_size;
+ symtab->sh.sh_size += data->d_size;
symtab->changed = true;
symtab_shndx = find_section_by_name(elf, ".symtab_shndx");
@@ -814,7 +813,7 @@
data->d_align = 4;
data->d_type = ELF_T_WORD;
- symtab_shndx->len += 4;
+ symtab_shndx->sh.sh_size += 4;
symtab_shndx->changed = true;
}
@@ -855,7 +854,6 @@
}
sec->idx = elf_ndxscn(s);
- sec->len = size;
sec->changed = true;
sec->data = elf_newdata(s);
diff --git a/tools/objtool/include/objtool/elf.h b/tools/objtool/include/objtool/elf.h
index e343950..075d829 100644
--- a/tools/objtool/include/objtool/elf.h
+++ b/tools/objtool/include/objtool/elf.h
@@ -38,7 +38,6 @@
Elf_Data *data;
char *name;
int idx;
- unsigned int len;
bool changed, text, rodata, noinstr;
};
diff --git a/tools/objtool/orc_gen.c b/tools/objtool/orc_gen.c
index dc9b7dd31..b5865e2 100644
--- a/tools/objtool/orc_gen.c
+++ b/tools/objtool/orc_gen.c
@@ -204,7 +204,7 @@
/* Add a section terminator */
if (!empty) {
- orc_list_add(&orc_list, &null, sec, sec->len);
+ orc_list_add(&orc_list, &null, sec, sec->sh.sh_size);
nr++;
}
}
diff --git a/tools/objtool/special.c b/tools/objtool/special.c
index f1428e32a..06c3eac 100644
--- a/tools/objtool/special.c
+++ b/tools/objtool/special.c
@@ -58,22 +58,11 @@
{
}
-static bool reloc2sec_off(struct reloc *reloc, struct section **sec, unsigned long *off)
+static void reloc_to_sec_off(struct reloc *reloc, struct section **sec,
+ unsigned long *off)
{
- switch (reloc->sym->type) {
- case STT_FUNC:
- *sec = reloc->sym->sec;
- *off = reloc->sym->offset + reloc->addend;
- return true;
-
- case STT_SECTION:
- *sec = reloc->sym->sec;
- *off = reloc->addend;
- return true;
-
- default:
- return false;
- }
+ *sec = reloc->sym->sec;
+ *off = reloc->sym->offset + reloc->addend;
}
static int get_alt_entry(struct elf *elf, struct special_entry *entry,
@@ -109,13 +98,8 @@
WARN_FUNC("can't find orig reloc", sec, offset + entry->orig);
return -1;
}
- if (!reloc2sec_off(orig_reloc, &alt->orig_sec, &alt->orig_off)) {
- WARN_FUNC("don't know how to handle reloc symbol type %d: %s",
- sec, offset + entry->orig,
- orig_reloc->sym->type,
- orig_reloc->sym->name);
- return -1;
- }
+
+ reloc_to_sec_off(orig_reloc, &alt->orig_sec, &alt->orig_off);
if (!entry->group || alt->new_len) {
new_reloc = find_reloc_by_dest(elf, sec, offset + entry->new);
@@ -133,13 +117,7 @@
if (arch_is_retpoline(new_reloc->sym))
return 1;
- if (!reloc2sec_off(new_reloc, &alt->new_sec, &alt->new_off)) {
- WARN_FUNC("don't know how to handle reloc symbol type %d: %s",
- sec, offset + entry->new,
- new_reloc->sym->type,
- new_reloc->sym->name);
- return -1;
- }
+ reloc_to_sec_off(new_reloc, &alt->new_sec, &alt->new_off);
/* _ASM_EXTABLE_EX hack */
if (alt->new_off >= 0x7ffffff0)
@@ -181,13 +159,13 @@
if (!sec)
continue;
- if (sec->len % entry->size != 0) {
+ if (sec->sh.sh_size % entry->size != 0) {
WARN("%s size not a multiple of %d",
sec->name, entry->size);
return -1;
}
- nr_entries = sec->len / entry->size;
+ nr_entries = sec->sh.sh_size / entry->size;
for (idx = 0; idx < nr_entries; idx++) {
alt = malloc(sizeof(*alt));
