linux-kernel - [PATCH] modpost: add .text.fixup to OTHER_TEXT

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>] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 15 Apr 2015 11:48:31 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Quentin Casasnovas <quentin.casasnovas@...cle.com>,
	linux-kbuild@...r.kernel.org,
	Ard Biesheuvel <ard.biesheuvel@...aro.org>,
	Nicolas Pitre <nico@...aro.org>,
	Russell King <rmk+kernel@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] modpost: add .text.fixup to OTHER_TEXT_SECTIONS

Two correct patches for the 4.1 release clashed in a way that
caused modpost to fail badly, with hundreds warnings like

WARNING: vmlinux.o(__ex_table+0x1014): Section mismatch in reference from the (unknown reference) (unknown) to the (unknown reference) .text.fixup:(unknown)

The fix, as suggested by the warnings, is to add the new .text.fixup
section into the OTHER_TEXT_SECTIONS list.

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Fixes: 52dc0595d540 ("modpost: handle relocations mismatch in __ex_table")
Fixes: c4a84ae39b4a ("ARM: 8322/1: keep .text and .fixup regions closer together")
---
The mostpost patch has not made it into 4.1 yet, so it's probably best to
add this fix on top of that to avoid breaking when Linus pulls it in.

diff --git a/scripts/mod/modpost.c b/scripts/mod/modpost.c
index cbd53e08769d..dd7efba020a1 100644
--- a/scripts/mod/modpost.c
+++ b/scripts/mod/modpost.c
@@ -876,7 +876,7 @@ static void check_section(const char *modname, struct elf_info *elf,
 #define TEXT_SECTIONS ".text", ".text.unlikely", ".sched.text", \
 		".kprobes.text"
 #define OTHER_TEXT_SECTIONS ".ref.text", ".head.text", ".spinlock.text", \
-		".fixup", ".entry.text"
+		".fixup", ".text.fixup", ".entry.text"
 
 #define INIT_SECTIONS      ".init.*"
 #define MEM_INIT_SECTIONS  ".meminit.*"

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/