From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fTKvx-000887-TX for barebox@lists.infradead.org; Thu, 14 Jun 2018 05:36:35 +0000 Date: Thu, 14 Jun 2018 07:36:22 +0200 From: Sascha Hauer Message-ID: <20180614053621.tszsa7rpmpv4yega@pengutronix.de> References: <20180613083110.zgmknbdkzepldj5b@pengutronix.de> <20180613161755.2176-1-pmamonov@gmail.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20180613161755.2176-1-pmamonov@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: [RESEND v4] fs: fix memory access via /dev/mem for MIPS64 To: Peter Mamonov Cc: barebox@lists.infradead.org On Wed, Jun 13, 2018 at 07:17:55PM +0300, Peter Mamonov wrote: > lseek checks for non-negative in-memory offsets (addresses), failing otherwise. > However negative address 0xffffffffXXXXXXXX is a valid MIPS64 virtual address. > > Signed-off-by: Peter Mamonov > --- > fs/fs.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) Applied, thanks Sascha > > diff --git a/fs/fs.c b/fs/fs.c > index b66cc9b17..8a49e32b5 100644 > --- a/fs/fs.c > +++ b/fs/fs.c > @@ -962,7 +962,7 @@ loff_t lseek(int fildes, loff_t offset, int whence) > case SEEK_SET: > if (f->size != FILE_SIZE_STREAM && offset > f->size) > goto out; > - if (offset < 0) > + if (IS_ERR_VALUE(offset)) > goto out; > pos = offset; > break; > @@ -981,7 +981,7 @@ loff_t lseek(int fildes, loff_t offset, int whence) > } > > pos = fsdrv->lseek(&f->fsdev->dev, f, pos); > - if (pos < 0) { > + if (IS_ERR_VALUE(pos)) { > errno = -pos; > return -1; > } > -- > 2.17.0 > > -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox