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  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:	Wed, 02 Jul 2014 20:05:34 -0700
From:	Joe Perches <joe@...ches.com>
To:	"Maciej W. Rozycki" <macro@...ux-mips.org>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH v2] declance: Fix 64-bit compilation warnings

On Thu, 2014-07-03 at 03:34 +0100, Maciej W. Rozycki wrote:
> On Thu, 3 Jul 2014, Maciej W. Rozycki wrote:
> 
> > > > @@ -499,8 +499,9 @@ static void lance_init_ring(struct net_d
> > > >  						/* The ones required by tmd2 */
> > > >  		*lib_ptr(ib, btx_ring[i].misc, lp->type) = 0;
> > > >  		if (i < 3 && ZERO)
> > > > -			printk("%d: 0x%8.8x(0x%8.8x)\n",
> > > > -			       i, leptr, (uint)lp->tx_buf_ptr_cpu[i]);
> > > > +			printk("%d: 0x%8.8x(%#0*lx)\n",
> > > > +			       i, leptr, 2 * (int)sizeof(long) + 2,
> > > > +			       (long)lp->tx_buf_ptr_cpu[i]);
> > > 
> > > Please just use "%p", no casts required.
> > 
> >  Hmm, there was something about %p that made me reject it, however I can't 
> > recall what it was and I can get the desired output with this format 
> > specifier (the NULL special case difference can be ignored, the pointers 
> > printed here won't ever be NULL).  Sending an update right away.
> 
>  Ah, there it is:
> 
> drivers/net/ethernet/amd/declance.c: In function 'lance_init_ring':
> drivers/net/ethernet/amd/declance.c:503: warning: '#' flag used with '%p' printf format
> drivers/net/ethernet/amd/declance.c:520: warning: '#' flag used with '%p' printf format
> 
> That's obviously GCC's incompatibility to our implementation.  I'm not 
> sure if that can be worked around, but I'll see what I can do about it.

The kernel vsprintf implementation doesn't prefix
pointers with 0x, so you can use 0x%p if you really
want that with a leading prefix, but you don't have
to use it.




--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

Powered by blists - more mailing lists