linux-kernel - [tip: objtool/core] objtool: Skip ORC entry creation for non-text sections

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:   Thu, 10 Sep 2020 18:54:39 -0000
From:   "tip-bot2 for Julien Thierry" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Miroslav Benes <mbenes@...e.cz>,
        Julien Thierry <jthierry@...hat.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: objtool/core] objtool: Skip ORC entry creation for non-text sections

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     3eaecac88a17f7fdf29561a197dc728f7f697c60
Gitweb:        https://git.kernel.org/tip/3eaecac88a17f7fdf29561a197dc728f7f697c60
Author:        Julien Thierry <jthierry@...hat.com>
AuthorDate:    Tue, 25 Aug 2020 13:47:41 +01:00
Committer:     Josh Poimboeuf <jpoimboe@...hat.com>
CommitterDate: Tue, 01 Sep 2020 17:19:11 -05:00

objtool: Skip ORC entry creation for non-text sections

Orc generation is only done for text sections, but some instructions
can be found in non-text sections (e.g. .discard.text sections).

Skip setting their orc sections since their whole sections will be
skipped for orc generation.

Reviewed-by: Miroslav Benes <mbenes@...e.cz>
Signed-off-by: Julien Thierry <jthierry@...hat.com>
Signed-off-by: Josh Poimboeuf <jpoimboe@...hat.com>
---
 tools/objtool/orc_gen.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/objtool/orc_gen.c b/tools/objtool/orc_gen.c
index e6b2363..22fe439 100644
--- a/tools/objtool/orc_gen.c
+++ b/tools/objtool/orc_gen.c
@@ -18,6 +18,9 @@ int create_orc(struct objtool_file *file)
 		struct cfi_reg *cfa = &insn->cfi.cfa;
 		struct cfi_reg *bp = &insn->cfi.regs[CFI_BP];
 
+		if (!insn->sec->text)
+			continue;
+
 		orc->end = insn->cfi.end;
 
 		if (cfa->base == CFI_UNDEFINED) {