linux-kernel - [PATCH 0/2] error-injection: Clarify the requirements of error injectable functions

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Message-Id: <167081319306.387937.10079195394503045678.stgit@devnote3>
Date:   Mon, 12 Dec 2022 11:46:33 +0900
From:   "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     bpf@...r.kernel.org, Borislav Petkov <bp@...en8.de>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Kees Cook <keescook@...omium.org>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        KP Singh <kpsingh@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Florent Revest <revest@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Christoph Hellwig <hch@...radead.org>,
        Chris Mason <clm@...a.com>, Jonathan Corbet <corbet@....net>,
        linux-doc@...r.kernel.org
Subject: [PATCH 0/2] error-injection: Clarify the requirements of error injectable functions

Hi,

Here are the patches for clarifying the requirement of error injectable
functions and remove confusing EI_ETYPE_NONE.

Here is the thread of discussions which leads this series.

https://lore.kernel.org/all/167019256481.3792653.4369637751468386073.stgit@devnote3/T/#u

I agreed that NACK the taint flag itself, and I thought I need to update
the function error injection so that the developers understand the
requirements and carefully use the ALLOW_ERROR_INJECTION() macro.
So I removed the confusing EI_ETYPE_NONE (this should not be there,
use errno instead), and update the document about error injectable
functions.

Thank you,

---

Masami Hiramatsu (Google) (2):
      error-injection: Remove EI_ETYPE_NONE
      docs: fault-injection: Add requirements of error injectable functions


 Documentation/fault-injection/fault-injection.rst |   65 +++++++++++++++++++++
 include/asm-generic/error-injection.h             |    7 +-
 include/linux/error-injection.h                   |    2 -
 lib/error-inject.c                                |    2 -
 4 files changed, 71 insertions(+), 5 deletions(-)

--
Masami Hiramatsu (Google) <mhiramat@...nel.org>