DPDK patches and discussions
 help / color / mirror / Atom feed
From: Bruce Richardson <bruce.richardson@intel.com>
To: Andy Green <andy@warmcat.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH 05/18] drivers: net: nfp: nfpcore: fix strncpy misuse
Date: Tue, 8 May 2018 10:03:11 +0100	[thread overview]
Message-ID: <20180508090310.GD20636@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <ae8f8a5a-17c8-64a7-ff5f-9efc7785bf29@warmcat.com>

On Tue, May 08, 2018 at 05:00:21PM +0800, Andy Green wrote:
> 
> 
> On 05/08/2018 04:58 PM, Bruce Richardson wrote:
> > On Tue, May 08, 2018 at 12:29:53PM +0800, Andy Green wrote:
> > > 
> > > ---
> > >   drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c |    3 ++-
> > >   1 file changed, 2 insertions(+), 1 deletion(-)
> > > 
> > > diff --git a/drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c b/drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c
> > > index 4e6c66624..9f6704a7f 100644
> > > --- a/drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c
> > > +++ b/drivers/net/nfp/nfpcore/nfp_cpp_pcie_ops.c
> > > @@ -846,7 +846,8 @@ nfp6000_init(struct nfp_cpp *cpp, const char *devname)
> > >   	memset(desc->busdev, 0, BUSDEV_SZ);
> > > -	strncpy(desc->busdev, devname, strlen(devname));
> > > +	strncpy(desc->busdev, devname, sizeof(desc->busdev) - 1);
> > > +	desc->busdev[sizeof(desc->busdev) - 1] = '\0';
> > >   	ret = nfp_acquire_process_lock(desc);
> > >   	if (ret)
> > As with previous patch, a better fix is to use strlcpy. This would apply to
> > just about all uses of strncpy in the code.
> 
> OK.
> 
> But the strncpy() was already there, it's not introduced by the patch.
> 
> I agree just doing it in one hit with strlcpy() is nicer.
> 
> -Andy
> 
Thanks for the fixes!

  reply	other threads:[~2018-05-08  9:03 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-08  4:29 [dpdk-dev] [PATCH 00/18] Fix build on gcc8 and various bugs Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 01/18] lib: ret_table: workaround hash function cast error Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 02/18] drivers: bus: pci: fix strncpy dangerous code Andy Green
2018-05-08  8:57   ` Bruce Richardson
2018-05-08  4:29 ` [dpdk-dev] [PATCH 03/18] drivers: bus: dpaa: fix inconsistent struct alignment Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 04/18] drivers: net: axgbe: fix broken eeprom string comp Andy Green
2018-05-08  4:29 ` [dpdk-dev] [PATCH 05/18] drivers: net: nfp: nfpcore: fix strncpy misuse Andy Green
2018-05-08  8:58   ` Bruce Richardson
2018-05-08  9:00     ` Andy Green
2018-05-08  9:03       ` Bruce Richardson [this message]
2018-05-08  4:29 ` [dpdk-dev] [PATCH 06/18] drivers: net: nfp: nfpcore fix off-by-one and no NUL on strncpy use Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 07/18] drivers: net: nfp: don't memcpy out of source range Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 08/18] drivers: net: nfp: fix buffer overflow in fw_name Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 09/18] drivers: net: qede: fix strncpy constant and NUL Andy Green
2018-05-08 17:59   ` Shaikh, Shahed
2018-05-08 19:53     ` Bruce Richardson
2018-05-08 20:02       ` Shaikh, Shahed
2018-05-08 22:07         ` Andy Green
2018-05-08 23:33           ` Shaikh, Shahed
2018-05-08  4:30 ` [dpdk-dev] [PATCH 10/18] drivers: net: qede: fix broken strncpy Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 11/18] drivers:net:sfc: fix strncpy length Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 12/18] drivers: net: sfc: fix another strncpy size and NUL Andy Green
2018-05-08  7:36   ` Andrew Rybchenko
2018-05-08  8:18     ` Andy Green
2018-05-08  9:02       ` Bruce Richardson
2018-05-08  9:08       ` Andrew Rybchenko
2018-05-08  4:30 ` [dpdk-dev] [PATCH 13/18] drivers: net: vdev: readlink inputs cannot be aliased Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 14/18] drivers: net: vdev: fix 3 x strncpy misuse Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 15/18] test-pmd: can't find include Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 16/18] app: fix sprintf overrun bug Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 17/18] app: test-bbdev: strcpy ok for allocated string Andy Green
2018-05-08  4:30 ` [dpdk-dev] [PATCH 18/18] app: test-bbdev: strcpy ok for allocated string 2 Andy Green

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20180508090310.GD20636@bricha3-MOBL.ger.corp.intel.com \
    --to=bruce.richardson@intel.com \
    --cc=andy@warmcat.com \
    --cc=dev@dpdk.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).