linux-kernel - Re: Warnings whilst building 5.2.0+

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-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue, 9 Jul 2019 12:37:35 +0200
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Chris Clayton <chris2553@...glemail.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: Warnings whilst building 5.2.0+

On 09.07.19 08:06, Chris Clayton wrote:

Hi,

> I've pulled Linus' tree this morning and, after running 'make oldconfig', tried a build. During that build I got the
> following warnings, which look to me like they should be fixed. 'git describe' shows v5.2-915-g5ad18b2e60b7 and my
> compiler is the 20190706 snapshot of gcc 9.

Thanks for the report. I'm rebuilding right know anyways, so I'll look
out for it.

> In file included from arch/x86/kernel/head64.c:35:
> In function 'sanitize_boot_params',
>     inlined from 'copy_bootdata' at arch/x86/kernel/head64.c:391:2:
> ./arch/x86/include/asm/bootparam_utils.h:40:3: warning: 'memset' offset [197, 448] from the object at 'boot_params' is
> out of the bounds of referenced subobject 'ext_ramdisk_image' with type 'unsigned int' at offset 192 [-Warray-bounds]
>    40 |   memset(&boot_params->ext_ramdisk_image, 0,
>       |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    41 |          (char *)&boot_params->efi_info -
>       |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    42 |    (char *)&boot_params->ext_ramdisk_image);
>       |    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ./arch/x86/include/asm/bootparam_utils.h:43:3: warning: 'memset' offset [493, 497] from the object at 'boot_params' is
> out of the bounds of referenced subobject 'kbd_status' with type 'unsigned char' at offset 491 [-Warray-bounds]
>    43 |   memset(&boot_params->kbd_status, 0,
>       |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    44 |          (char *)&boot_params->hdr -
>       |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>    45 |          (char *)&boot_params->kbd_status);
>       |          ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Can you check older versions, too ? Maybe also trying older gcc ?


--mtx

-- 
Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287