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Fix a cold functions related false-positive objtool warning

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that triggers on Clang.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fix from Ingo Molnar:
 "Fix a cold functions related false-positive objtool warning that
  triggers on Clang"

* tag 'objtool-urgent-2023-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix _THIS_IP_ detection for cold functions
This commit is contained in:
Linus Torvalds 2023-09-17 10:59:37 -07:00
commit e54ca3c81f
1 changed files with 2 additions and 1 deletions
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3
tools/objtool/check.c
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@ -4333,7 +4333,8 @@ static int validate_ibt_insn(struct objtool_file *file, struct instruction *insn
continue;
}
if (insn_func(dest) && insn_func(dest) == insn_func(insn)) {
if (insn_func(dest) && insn_func(insn) &&
insn_func(dest)->pfunc == insn_func(insn)->pfunc) {
/*
* Anything from->to self is either _THIS_IP_ or
* IRET-to-self.