linux-kernel - Re: Linux 6.2-rc3

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Message-ID: <2128d543-33aa-b32d-68f6-5d3edad6cb47@roeck-us.net>
Date:   Mon, 9 Jan 2023 15:14:16 -0800
From:   Guenter Roeck <linux@...ck-us.net>
To:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Marco Elver <elver@...gle.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Kees Cook <kees@...nel.org>, Jaegeuk Kim <jaegeuk@...nel.org>,
        Vlastimil Babka <vbabka@...e.cz>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 6.2-rc3

On 1/9/23 14:18, Linus Torvalds wrote:
> On Mon, Jan 9, 2023 at 11:47 AM Guenter Roeck <linux@...ck-us.net> wrote:
>>
>> fs/f2fs/inline.c: In function 'f2fs_move_inline_dirents':
>> include/linux/fortify-string.h:59:33: error: '__builtin_memset' pointer overflow between offset [28, 898293814] and size [-898293787, -1] [-Werror=array-bounds]
> 
> Ok, I guess we'll have to disable this gcc warning for this version
> again. I don't think anybody figured out why it happens. We had
> several people look at it (Kees, Vlastimil, Jaegeuk) and I think
> everybody ended up going "tis looks like a compiler thing".
> 
> Does anybody remember - what was the compiler version again and what
> do we need to disable?
> 

I currently run my build tests with gcc 11.3. There is "config CC_NO_ARRAY_BOUNDS"
which disables it for gcc 12.

Guenter