linux-kernel - Re: [PATCH] vfio: selftests: fix format conversion compiler warning

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]

Message-ID: <CALzav=dMhycS2iBxkhPCz3tMUKxkfgr1dCLFGYzGuXZCeYhijw@mail.gmail.com>
Date: Wed, 28 Jan 2026 11:06:03 -0800
From: David Matlack <dmatlack@...gle.com>
To: Ted Logan <tedlogan@...com>
Cc: Alex Williamson <alex@...zbot.org>, Shuah Khan <shuah@...nel.org>, 
	Raghavendra Rao Ananta <rananta@...gle.com>, Alex Mastro <amastro@...com>, kvm@...r.kernel.org, 
	linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
	kernel test robot <lkp@...el.com>
Subject: Re: [PATCH] vfio: selftests: fix format conversion compiler warning

On Wed, Jan 28, 2026 at 10:38 AM Ted Logan <tedlogan@...com> wrote:
>
> Use the standard format conversion macro PRIx64 to generate the
> appropriate format conversion for 64-bit integers. Fixes a compiler
> warning with -Wformat on i386.
>
> Signed-off-by: Ted Logan <tedlogan@...com>
> Reported-by: kernel test robot <lkp@...el.com>
> Closes: https://lore.kernel.org/oe-kbuild-all/202601211830.aBEjmEFD-lkp@intel.com/

Thanks for the patch.

I've been seeing these i386 reports as well. I find the PRIx64, etc.
format specifiers make format strings very hard to read. And I think
there were some other issues when building VFIO selftests with i386
the last time I tried.

I was thinking instead we should just not support i386 builds of VFIO
selftests. But I hadn't gotten around to figuring out the right
Makefile magic to make that happen.