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| author |   Josh Poimboeuf <jpoimboe@redhat.com> | 2019-07-17 20:36:48 -0500 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2019-07-18 21:01:07 +0200 |
| commit | e10cd8fe8ddfd28a172d2be57ae0e90c7f752e6a (patch) | |
| tree | 819c6225b6167c23c52a230860eb4424157146d9 /tools/objtool/elf.c | |
| parent | objtool: Track original function across branches (diff) | |
| download | linux-dev-e10cd8fe8ddfd28a172d2be57ae0e90c7f752e6a.tar.xz linux-dev-e10cd8fe8ddfd28a172d2be57ae0e90c7f752e6a.zip | |
objtool: Refactor function alias logic
- Add an alias check in validate_functions(). With this change, aliases
no longer need uaccess_safe set.
- Add an alias check in decode_instructions(). With this change, the
"if (!insn->func)" check is no longer needed.
- Don't create aliases for zero-length functions, as it can have
unexpected results. The next patch will spit out a warning for
zero-length functions anyway.
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/26a99c31426540f19c9a58b9e10727c385a147bc.1563413318.git.jpoimboe@redhat.com
Diffstat (limited to '')
| -rw-r--r-- | tools/objtool/elf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/objtool/elf.c b/tools/objtool/elf.c index e18698262837..9194732a673d 100644 --- a/tools/objtool/elf.c +++ b/tools/objtool/elf.c @@ -278,7 +278,7 @@ static int read_symbols(struct elf *elf) } if (sym->offset == s->offset) { - if (sym->len == s->len && alias == sym) + if (sym->len && sym->len == s->len && alias == sym) alias = s; if (sym->len >= s->len) { |