linux-kernel - Re: [PATCH] vfio/pci: use correct format characters

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 for Android: free password hash cracker in your pocket

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

Date:   Wed, 3 Apr 2019 12:52:20 -0600
From:   Alex Williamson <alex.williamson@...hat.com>
To:     Louis Taylor <louis@...gniz.eu>
Cc:     aik@...abs.ru, kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        clang-built-linux@...glegroups.com, ndesaulniers@...gle.com,
        jflat@...omium.org
Subject: Re: [PATCH] vfio/pci: use correct format characters

On Thu, 28 Feb 2019 19:48:12 +0000
Louis Taylor <louis@...gniz.eu> wrote:

> When compiling with -Wformat, clang emits the following warnings:
> 
> drivers/vfio/pci/vfio_pci.c:1601:5: warning: format specifies type
>       'unsigned short' but the argument has type 'unsigned int' [-Wformat]
>                                 vendor, device, subvendor, subdevice,
>                                 ^~~~~~
> 
> drivers/vfio/pci/vfio_pci.c:1601:13: warning: format specifies type
>       'unsigned short' but the argument has type 'unsigned int' [-Wformat]
>                                 vendor, device, subvendor, subdevice,
>                                         ^~~~~~
> 
> drivers/vfio/pci/vfio_pci.c:1601:21: warning: format specifies type
>       'unsigned short' but the argument has type 'unsigned int' [-Wformat]
>                                 vendor, device, subvendor, subdevice,
>                                                 ^~~~~~~~~
> 
> drivers/vfio/pci/vfio_pci.c:1601:32: warning: format specifies type
>       'unsigned short' but the argument has type 'unsigned int' [-Wformat]
>                                 vendor, device, subvendor, subdevice,
>                                                            ^~~~~~~~~
> 
> drivers/vfio/pci/vfio_pci.c:1605:5: warning: format specifies type
>       'unsigned short' but the argument has type 'unsigned int' [-Wformat]
>                                 vendor, device, subvendor, subdevice,
>                                 ^~~~~~
> 
> drivers/vfio/pci/vfio_pci.c:1605:13: warning: format specifies type
>       'unsigned short' but the argument has type 'unsigned int' [-Wformat]
>                                 vendor, device, subvendor, subdevice,
>                                         ^~~~~~
> 
> drivers/vfio/pci/vfio_pci.c:1605:21: warning: format specifies type
>       'unsigned short' but the argument has type 'unsigned int' [-Wformat]
>                                 vendor, device, subvendor, subdevice,
>                                                 ^~~~~~~~~
> 
> drivers/vfio/pci/vfio_pci.c:1605:32: warning: format specifies type
>       'unsigned short' but the argument has type 'unsigned int' [-Wformat]
>                                 vendor, device, subvendor, subdevice,
>                                                            ^~~~~~~~~
> The types of these arguments are unconditionally defined, so this patch
> updates the format character to the correct ones for unsigned ints.
> 
> Link: https://github.com/ClangBuiltLinux/linux/issues/378
> Signed-off-by: Louis Taylor <louis@...gniz.eu>
> ---

Applied to vfio for-linus branch for v5.1 with Nick's R-b.  Thanks!

Alex

>  drivers/vfio/pci/vfio_pci.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/vfio/pci/vfio_pci.c b/drivers/vfio/pci/vfio_pci.c
> index a25659b5a5d1..3fa20e95a6bb 100644
> --- a/drivers/vfio/pci/vfio_pci.c
> +++ b/drivers/vfio/pci/vfio_pci.c
> @@ -1661,11 +1661,11 @@ static void __init vfio_pci_fill_ids(void)
>  		rc = pci_add_dynid(&vfio_pci_driver, vendor, device,
>  				   subvendor, subdevice, class, class_mask, 0);
>  		if (rc)
> -			pr_warn("failed to add dynamic id [%04hx:%04hx[%04hx:%04hx]] class %#08x/%08x (%d)\n",
> +			pr_warn("failed to add dynamic id [%04x:%04x[%04x:%04x]] class %#08x/%08x (%d)\n",
>  				vendor, device, subvendor, subdevice,
>  				class, class_mask, rc);
>  		else
> -			pr_info("add [%04hx:%04hx[%04hx:%04hx]] class %#08x/%08x\n",
> +			pr_info("add [%04x:%04x[%04x:%04x]] class %#08x/%08x\n",
>  				vendor, device, subvendor, subdevice,
>  				class, class_mask);
>  	}