From: Peter Zijlstra <peterz@infradead.org>
To: tglx@linutronix.de, jpoimboe@redhat.com
Cc: linux-kernel@vger.kernel.org, x86@kernel.org
Subject: Re: [RFC][PATCH 04/16] objtool: Annotate identity_mapped()
Date: Fri, 13 Mar 2020 15:34:29 +0100 [thread overview]
Message-ID: <20200313143429.GB12521@hirez.programming.kicks-ass.net> (raw)
In-Reply-To: <20200312135041.641079164@infradead.org>
On Thu, Mar 12, 2020 at 02:41:11PM +0100, Peter Zijlstra wrote:
> --- a/tools/objtool/check.c
> +++ b/tools/objtool/check.c
> @@ -416,7 +416,7 @@ static void add_ignores(struct objtool_f
>
> case STT_SECTION:
> func = find_symbol_by_offset(rela->sym->sec, rela->addend);
> - if (!func || func->type != STT_FUNC)
> + if (!func || (func->type != STT_FUNC && func->type != STT_NOTYPE))
> continue;
> break;
>
> @@ -425,7 +425,7 @@ static void add_ignores(struct objtool_f
> continue;
> }
>
> - func_for_each_insn(file, func, insn)
> + sym_for_each_insn(file, func, insn)
> insn->ignore = true;
> }
> }
This conflicts with:
7acfe5315312 ("objtool: Improve call destination function detection")
which wasn't in the tree we were working against :/
I've resolved it something like so.
---
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -406,7 +406,7 @@ static void add_ignores(struct objtool_f
{
struct instruction *insn;
struct section *sec;
- struct symbol *func;
+ struct symbol *sym;
struct rela *rela;
sec = find_section_by_name(file->elf, ".rela.discard.func_stack_frame_non_standard");
@@ -416,12 +416,12 @@ static void add_ignores(struct objtool_f
list_for_each_entry(rela, &sec->rela_list, list) {
switch (rela->sym->type) {
case STT_FUNC:
- func = rela->sym;
+ sym = rela->sym;
break;
case STT_SECTION:
- func = find_func_by_offset(rela->sym->sec, rela->addend);
- if (!func)
+ sym = find_symbol_by_offset(rela->sym->sec, rela->addend);
+ if (!sym || (sym->type != STT_FUNC || sym->type != STT_NOTYPE))
continue;
break;
@@ -430,7 +430,7 @@ static void add_ignores(struct objtool_f
continue;
}
- sym_for_each_insn(file, func, insn)
+ sym_for_each_insn(file, sym, insn)
insn->ignore = true;
}
}
next prev parent reply other threads:[~2020-03-13 14:34 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-12 13:41 [RFC][PATCH 00/16] objtool: vmlinux.o and noinstr validation Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 01/16] objtool: Introduce validate_return() Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 02/16] objtool: Rename func_for_each_insn() Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 03/16] objtool: Rename func_for_each_insn_all() Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 04/16] objtool: Annotate identity_mapped() Peter Zijlstra
2020-03-13 14:34 ` Peter Zijlstra [this message]
2020-03-15 15:45 ` Josh Poimboeuf
2020-03-13 16:46 ` Brian Gerst
2020-03-13 17:22 ` Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 05/16] objtool: Optimize find_symbol_by_index() Peter Zijlstra
2020-03-15 16:09 ` Josh Poimboeuf
2020-03-15 16:18 ` Josh Poimboeuf
2020-03-15 16:10 ` Josh Poimboeuf
2020-03-17 11:55 ` Miroslav Benes
2020-03-17 14:08 ` Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 06/16] objtool: Add a statistics mode Peter Zijlstra
2020-03-15 16:20 ` Josh Poimboeuf
2020-03-12 13:41 ` [RFC][PATCH 07/16] objtool: Optimize find_section_by_index() Peter Zijlstra
2020-03-15 16:24 ` Josh Poimboeuf
2020-03-12 13:41 ` [RFC][PATCH 08/16] Optimize find_section_by_name() Peter Zijlstra
2020-03-15 16:25 ` Josh Poimboeuf
2020-03-17 12:22 ` Miroslav Benes
2020-03-17 14:10 ` Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 09/16] objtool: Optimize find_symbol_*() and read_symbols() Peter Zijlstra
2020-03-15 15:48 ` Josh Poimboeuf
2020-03-15 16:41 ` Josh Poimboeuf
2020-03-12 13:41 ` [RFC][PATCH 10/16] objtool: Resize insn_hash Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 11/16] objtool: Optimize find_symbol_by_name() Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 12/16] objtool: Optimize read_sections() Peter Zijlstra
2020-03-15 16:53 ` Josh Poimboeuf
2020-03-12 13:41 ` [RFC][PATCH 13/16] objtool: Delete cleanup() Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 14/16] objtool: Optimize find_rela_by_dest_range() Peter Zijlstra
2020-03-12 13:41 ` [RFC][PATCH 15/16] objtool: Implement noinstr validation Peter Zijlstra
2020-03-15 18:03 ` Josh Poimboeuf
2020-03-16 13:24 ` Peter Zijlstra
2020-03-16 16:19 ` Josh Poimboeuf
2020-03-16 16:21 ` Josh Poimboeuf
2020-03-16 16:46 ` Peter Zijlstra
2020-03-16 16:48 ` Peter Zijlstra
2020-03-16 19:20 ` Josh Poimboeuf
2020-03-12 13:41 ` [RFC][PATCH 16/16] objtool: Optimize !vmlinux.o again Peter Zijlstra
2020-03-12 21:57 ` [RFC][PATCH v2 " Peter Zijlstra
2020-03-12 16:23 ` [RFC][PATCH 00/16] objtool: vmlinux.o and noinstr validation Peter Zijlstra
2020-03-12 17:44 ` Josh Poimboeuf
2020-03-12 22:23 ` Peter Zijlstra
2020-03-17 0:56 ` Masami Hiramatsu
2020-03-17 9:26 ` Thomas Gleixner
2020-03-17 14:20 ` Masami Hiramatsu
2020-03-17 12:14 ` Peter Zijlstra
2020-03-15 18:12 ` Josh Poimboeuf
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