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| author | Josh Poimboeuf <jpoimboe@redhat.com> | 2017-09-18 21:43:30 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-09-28 09:39:02 +0200 |
| commit | 00d96180dc38ef872ac471c2d3e14b067cbd895d (patch) | |
| tree | d60b5723b0e77a0e02fc4c15813d9b22a4bd74ca /tools/objtool | |
| parent | 607a4029d439cdfa258aff5da32bb9cd6ed1a66d (diff) | |
| download | linux-stable-00d96180dc38ef872ac471c2d3e14b067cbd895d.tar.gz linux-stable-00d96180dc38ef872ac471c2d3e14b067cbd895d.tar.bz2 linux-stable-00d96180dc38ef872ac471c2d3e14b067cbd895d.zip | |
objtool: Don't report end of section error after an empty unwind hint
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>
Diffstat (limited to 'tools/objtool')
| -rw-r--r-- | tools/objtool/check.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index a0c518ecf085..83f370fa00c2 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -1752,11 +1752,14 @@ static int validate_branch(struct objtool_file *file, struct instruction *first, if (insn->dead_end) return 0; - insn = next_insn; - if (!insn) { + if (!next_insn) { + if (state.cfa.base == CFI_UNDEFINED) + return 0; WARN("%s: unexpected end of section", sec->name); return 1; } + + insn = next_insn; } return 0; |