linux-kernel - [PATCH] vmlinux.lds.h: Remove a reference to no longer used sections .text..refcount

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]

Message-Id: <20230711125054.9000-1-petr.pavlu@suse.com>
Date:   Tue, 11 Jul 2023 14:50:54 +0200
From:   Petr Pavlu <petr.pavlu@...e.com>
To:     arnd@...db.de
Cc:     keescook@...omium.org, will@...nel.org, linux-arch@...r.kernel.org,
        linux-kernel@...r.kernel.org, Petr Pavlu <petr.pavlu@...e.com>
Subject: [PATCH] vmlinux.lds.h: Remove a reference to no longer used sections .text..refcount

Sections .text..refcount were previously used to hold an error path code
for fast refcount overflow protection on x86, see commit 7a46ec0e2f48
("locking/refcounts, x86/asm: Implement fast refcount overflow
protection") and commit 564c9cc84e2a ("locking/refcounts, x86/asm: Use
unique .text section for refcount exceptions").

The code was replaced and removed in commit fb041bb7c0a9
("locking/refcount: Consolidate implementations of refcount_t") and no
sections .text..refcount are present since then.

Remove then a relic referencing these sections from TEXT_TEXT to avoid
confusing people, like me. This is a non-functional change.

Signed-off-by: Petr Pavlu <petr.pavlu@...e.com>
---
 include/asm-generic/vmlinux.lds.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 0587354ba678..9c59409104f6 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -578,7 +578,6 @@
 		*(.text.unlikely .text.unlikely.*)			\
 		*(.text.unknown .text.unknown.*)			\
 		NOINSTR_TEXT						\
-		*(.text..refcount)					\
 		*(.ref.text)						\
 		*(.text.asan.* .text.tsan.*)				\
 	MEM_KEEP(init.text*)						\
-- 
2.35.3