linux-kernel - Re: [RFC PATCH 0/1] Integer overflows while scanning for integers

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Message-ID: <447684945.3699459.1686241412894.JavaMail.zimbra@nod.at>
Date:   Thu, 8 Jun 2023 18:23:32 +0200 (CEST)
From:   Richard Weinberger <richard@....at>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Petr Mladek <pmladek@...e.com>, Kees Cook <keescook@...omium.org>,
        linux-hardening <linux-hardening@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        senozhatsky <senozhatsky@...omium.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        davem <davem@...emloft.net>, edumazet <edumazet@...gle.com>,
        kuba <kuba@...nel.org>, pabeni <pabeni@...hat.com>,
        Miguel Ojeda <ojeda@...nel.org>,
        Alex Gaynor <alex.gaynor@...il.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>,
        Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>,
        Björn Roy Baron <bjorn3_gh@...tonmail.com>,
        Benno Lossin <benno.lossin@...ton.me>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>
Subject: Re: [RFC PATCH 0/1] Integer overflows while scanning for integers

----- Ursprüngliche Mail -----
> Von: "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
> "some users" == "most major cloud providers and a few billion Android
> phones"  So in pure numbers, the huge majority of Linux systems running
> in the world have that option enabled.
> 
> So please don't use WARN() to catch issues that can be triggered by
> userspace, that can cause data loss and worse at times.

Sorry for being unclear. My goal is not having the WARN patch immediately
applied without fixing known call sites which can trigger it.

Thanks,
//richard