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objtool: Don't report end of section error after an empty unwind hint
commit 00d96180dc
upstream.
If asm code specifies an UNWIND_HINT_EMPTY hint, don't warn if the
section ends unexpectedly. This can happen with the xen-head.S code
because the hypercall_page is "text" but it's all zeros.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: Juergen Gross <jgross@suse.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/ddafe199dd8797e40e3c2777373347eba1d65572.1505764066.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
c09061aec2
commit
42314edefa
1 changed files with 5 additions and 2 deletions
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@ -1757,11 +1757,14 @@ static int validate_branch(struct objtool_file *file, struct instruction *first,
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if (insn->dead_end)
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return 0;
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insn = next_insn;
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if (!insn) {
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if (!next_insn) {
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if (state.cfa.base == CFI_UNDEFINED)
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return 0;
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WARN("%s: unexpected end of section", sec->name);
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return 1;
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}
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insn = next_insn;
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}
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return 0;
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