linux-kernel - [PATCH v2 0/2] cfi: free old cfi shadow asynchronously

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Message-ID: <20220704014046.34596-1-haibo.li@mediatek.com>
Date:   Mon, 4 Jul 2022 09:40:44 +0800
From:   Haibo Li <haibo.li@...iatek.com>
To:     Sami Tolvanen <samitolvanen@...gle.com>
CC:     <xiaoming.yu@...iatek.com>, Kees Cook <keescook@...omium.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        André Almeida <andrealmeid@...lia.com>,
        Luis Chamberlain <mcgrof@...nel.org>,
        Juergen Gross <jgross@...e.com>,
        Haibo Li <haibo.li@...iatek.com>,
        Tiezhu Yang <yangtiezhu@...ngson.cn>,
        Aaron Tomlin <atomlin@...hat.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        <linux-kernel@...r.kernel.org>, <llvm@...ts.linux.dev>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: [PATCH v2 0/2] cfi: free old cfi shadow asynchronously

This patchset changes synchronize_rcu to call_rcu in update_shadow.

Patch 1 enables the CFI sanitization for cfi.c and 
bypass __cfi_slowpath_diag.
It is the prerequisite for using call_rcu in cfi.c.

Patch 2 changes synchronize_rcu to call_rcu and
free old cfi shadow in rcu cb

Changes in v2:
 - Remove _run_cfi_check,add __nocfi to __cfi_slowpath_diag directly
 - Rename _cfi_shadow_free_rcu to free_shadow

Haibo Li (2):
  cfi: enable sanitize for cfi.c
  cfi: free old cfi shadow asynchronously

 kernel/Makefile |  3 ---
 kernel/cfi.c    | 14 +++++++++++---
 2 files changed, 11 insertions(+), 6 deletions(-)

-- 
2.25.1