patches for DPDK stable branches
 help / color / mirror / Atom feed
From: Thomas Monjalon <thomas@monjalon.net>
To: Ke Zhang <ke1x.zhang@intel.com>
Cc: dev@dpdk.org, stable@dpdk.org, xiaoyun.li@intel.com,
	aman.deep.singh@intel.com, yuying.zhang@intel.com,
	Ferruh Yigit <ferruh.yigit@xilinx.com>
Subject: Re: [PATCH v2] app/testpmd: fix quit testpmd with vfs and pf
Date: Wed, 22 Jun 2022 23:31:18 +0200	[thread overview]
Message-ID: <4030713.XrmoMso0CX@thomas> (raw)
In-Reply-To: <e4403b4a-dfbf-9ea3-e833-cb9601049cb7@xilinx.com>

Sorry, this patch looks really wrong, I cannot pull it into the main branch.
See below for an explanation.


21/06/2022 12:43, Ferruh Yigit:
> On 6/21/2022 10:24 AM, Ke Zhang wrote:
> > When testpmd startups with pf and vfs,this error occurs when quitting,
> > results in pf is released before vfs ,so the vf would access an
> > freed heap memory.
> > 
> > The solution is two steps:
> > 1. Fetch the valid port value from RTE_ETH_FOREACH_DEV.
> > 2. free the port in reverse order.
> > 
> > Fixes: 08fd782b8454 ("app/testpmd: fix quit to stop all ports before close")
> > Cc: stable@dpdk.org
> > 
> > Signed-off-by: Ke Zhang <ke1x.zhang@intel.com>
> 
> Acked-by: Aman Singh <aman.deep.singh@intel.com>
> Acked-by: Ferruh Yigit <ferruh.yigit@xilinx.com>
> 
> Applied to dpdk-next-net/main, thanks.
> 
> 
> > ---
> >   app/test-pmd/testpmd.c | 26 +++++++++++++++++++++-----
> >   1 file changed, 21 insertions(+), 5 deletions(-)
> > 
> > diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> > index 04c39adc21..c01ecf7279 100644
> > --- a/app/test-pmd/testpmd.c
> > +++ b/app/test-pmd/testpmd.c
> > @@ -3492,16 +3492,32 @@ pmd_test_exit(void)
> >   	}
> >   #endif
> >   	if (ports != NULL) {
> > +		portid_t ethports[RTE_MAX_ETHPORTS];
> > +		int count = 0;
> > +		int index = 0;
>  >   		no_link_check = 1;
> 
> No need to initialize 'index'.
> 
> And better to have an empty line after deceleration block.
> 
> > +
> > +		/* Fetch the valid port id from port list*/
> >   		RTE_ETH_FOREACH_DEV(pt_id) {
> > -			printf("\nStopping port %d...\n", pt_id);
> > +			ethports[count] = pt_id;
> > +			count++;
> > +		}
> > +
> > +		/*
> > +		 * Free the port from Reverse order, as general,
> > +		 * PF port < VF port, VF should be free before PF
> > +		 * be free.

No sorry, this is wrong.
The port ID says nothing.
If a port is closed before creating a VF,
it can be VF < PF.

> > +		 */
> > +		for (index = count - 1 ; index >= 0 ; index--) {
> 
> Space is not needed after ';'.
> 
> 
> Since these are minor, I will fix while merging.




  reply	other threads:[~2022-06-22 21:31 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20220322071833.199619-1-ke1x.zhang@intel.com>
2022-06-21  9:03 ` Ke Zhang
2022-06-21  9:20   ` Ferruh Yigit
2022-06-21  9:24 ` Ke Zhang
2022-06-21 10:43   ` Ferruh Yigit
2022-06-22 21:31     ` Thomas Monjalon [this message]
2022-06-23  6:41       ` Thomas Monjalon
2022-07-13  7:11   ` [PATCH v3] " Ke Zhang
2022-07-13  9:15     ` Thomas Monjalon
2022-07-15  9:03     ` [PATCH v4] net/i40e: fix the issue caused by PF and VF release order Ke Zhang
2022-08-02  2:16       ` Zhang, Yuying
2022-08-08  0:06         ` Zhang, Qi Z
2022-08-08  0:30           ` Zhang, Qi Z
2022-08-04  9:50       ` [PATCH v5] " Ke Zhang
2022-08-08  0:30         ` Zhang, Qi Z

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=4030713.XrmoMso0CX@thomas \
    --to=thomas@monjalon.net \
    --cc=aman.deep.singh@intel.com \
    --cc=dev@dpdk.org \
    --cc=ferruh.yigit@xilinx.com \
    --cc=ke1x.zhang@intel.com \
    --cc=stable@dpdk.org \
    --cc=xiaoyun.li@intel.com \
    --cc=yuying.zhang@intel.com \
    /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).