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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 17:39:57 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 17:39:57 +0000
commitdc50eab76b709d68175a358d6e23a5a3890764d3 (patch)
treec754d0390db060af0213ff994f0ac310e4cfd6e9 /tools/objtool
parentAdding debian version 6.6.15-2. (diff)
downloadlinux-dc50eab76b709d68175a358d6e23a5a3890764d3.tar.xz
linux-dc50eab76b709d68175a358d6e23a5a3890764d3.zip
Merging upstream version 6.7.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/objtool')
-rw-r--r--tools/objtool/arch/x86/decode.c6
-rw-r--r--tools/objtool/check.c16
-rw-r--r--tools/objtool/elf.c14
-rw-r--r--tools/objtool/noreturns.h3
4 files changed, 28 insertions, 11 deletions
diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index c0f25d0018..e327cd8271 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -291,7 +291,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
switch (modrm_reg & 7) {
case 5:
imm = -imm;
- /* fallthrough */
+ fallthrough;
case 0:
/* add/sub imm, %rsp */
ADD_OP(op) {
@@ -375,7 +375,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
break;
}
- /* fallthrough */
+ fallthrough;
case 0x88:
if (!rex_w)
break;
@@ -656,7 +656,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
break;
}
- /* fallthrough */
+ fallthrough;
case 0xca: /* retf */
case 0xcb: /* retf */
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index e308d1ba66..e94756e09c 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -1611,6 +1611,22 @@ static int add_jump_destinations(struct objtool_file *file)
}
/*
+ * An intra-TU jump in retpoline.o might not have a relocation
+ * for its jump dest, in which case the above
+ * add_{retpoline,return}_call() didn't happen.
+ */
+ if (jump_dest->sym && jump_dest->offset == jump_dest->sym->offset) {
+ if (jump_dest->sym->retpoline_thunk) {
+ add_retpoline_call(file, insn);
+ continue;
+ }
+ if (jump_dest->sym->return_thunk) {
+ add_return_call(file, insn, true);
+ continue;
+ }
+ }
+
+ /*
* Cross-function jump.
*/
if (insn_func(insn) && insn_func(jump_dest) &&
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c
index 081befa467..3d27983dc9 100644
--- a/tools/objtool/elf.c
+++ b/tools/objtool/elf.c
@@ -22,8 +22,6 @@
#include <objtool/elf.h>
#include <objtool/warn.h>
-#define MAX_NAME_LEN 128
-
static inline u32 str_hash(const char *str)
{
return jhash(str, strlen(str), 0);
@@ -515,7 +513,7 @@ static int read_symbols(struct elf *elf)
/* Create parent/child links for any cold subfunctions */
list_for_each_entry(sec, &elf->sections, list) {
sec_for_each_sym(sec, sym) {
- char pname[MAX_NAME_LEN + 1];
+ char *pname;
size_t pnamelen;
if (sym->type != STT_FUNC)
continue;
@@ -531,15 +529,15 @@ static int read_symbols(struct elf *elf)
continue;
pnamelen = coldstr - sym->name;
- if (pnamelen > MAX_NAME_LEN) {
- WARN("%s(): parent function name exceeds maximum length of %d characters",
- sym->name, MAX_NAME_LEN);
+ pname = strndup(sym->name, pnamelen);
+ if (!pname) {
+ WARN("%s(): failed to allocate memory",
+ sym->name);
return -1;
}
- strncpy(pname, sym->name, pnamelen);
- pname[pnamelen] = '\0';
pfunc = find_symbol_by_name(elf, pname);
+ free(pname);
if (!pfunc) {
WARN("%s(): can't find parent function",
diff --git a/tools/objtool/noreturns.h b/tools/objtool/noreturns.h
index 80a3e6acf3..1685d7ea6a 100644
--- a/tools/objtool/noreturns.h
+++ b/tools/objtool/noreturns.h
@@ -10,9 +10,12 @@ NORETURN(__kunit_abort)
NORETURN(__module_put_and_kthread_exit)
NORETURN(__reiserfs_panic)
NORETURN(__stack_chk_fail)
+NORETURN(__tdx_hypercall_failed)
NORETURN(__ubsan_handle_builtin_unreachable)
NORETURN(arch_call_rest_init)
NORETURN(arch_cpu_idle_dead)
+NORETURN(bch2_trans_in_restart_error)
+NORETURN(bch2_trans_restart_error)
NORETURN(cpu_bringup_and_idle)
NORETURN(cpu_startup_entry)
NORETURN(do_exit)