From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: kbuild test robot <lkp@intel.com>,
kbuild-all@01.org, linux-usb@vger.kernel.org,
Johan Hovold <johan@kernel.org>
Subject: Re: [usb:usb-linus 3/10] drivers/media//usb/siano/smsusb.c:447:37: warning: 'in_maxp' may be used uninitialized in this function
Date: Tue, 21 May 2019 16:08:05 +0200 [thread overview]
Message-ID: <20190521140805.GA24615@kroah.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1905210948590.1634-100000@iolanthe.rowland.org>
On Tue, May 21, 2019 at 09:49:36AM -0400, Alan Stern wrote:
> On Tue, 21 May 2019, Greg Kroah-Hartman wrote:
>
> > On Tue, May 21, 2019 at 04:48:47PM +0800, kbuild test robot wrote:
> > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-linus
> > > head: 53c7b63f797c96a30c21dd3b781fafaae096a12b
> > > commit: 31e0456de5be379b10fea0fa94a681057114a96e [3/10] media: usb: siano: Fix general protection fault in smsusb
> > > config: mips-allmodconfig (attached as .config)
> > > compiler: mips-linux-gcc (GCC) 8.1.0
> > > reproduce:
> > > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> > > chmod +x ~/bin/make.cross
> > > git checkout 31e0456de5be379b10fea0fa94a681057114a96e
> > > # save the attached .config to linux build tree
> > > GCC_VERSION=8.1.0 make.cross ARCH=mips
> > >
> > > If you fix the issue, kindly add following tag
> > > Reported-by: kbuild test robot <lkp@intel.com>
> > >
> > > Note: it may well be a FALSE warning. FWIW you are at least aware of it now.
> > > http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings
> >
> > False positive, gcc isn't smart enough here.
>
> Should I send a patch initializing the value to 0 anyway?
Probably :(
next prev parent reply other threads:[~2019-05-21 14:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-21 8:48 [usb:usb-linus 3/10] drivers/media//usb/siano/smsusb.c:447:37: warning: 'in_maxp' may be used uninitialized in this function kbuild test robot
2019-05-21 13:09 ` Greg Kroah-Hartman
2019-05-21 13:49 ` Alan Stern
2019-05-21 14:08 ` Greg Kroah-Hartman [this message]
2019-05-21 15:38 ` [PATCH] media: usb: siano: Fix false-positive "uninitialized variable" warning Alan Stern
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