[dpdk-dev] [dpdk-stable] [PATCH] net/failsafe: fix fd leak

[Ali Alnubani]

Hi,

> -----Original Message-----
> From: dev <dev-bounces at dpdk.org> On Behalf Of Ferruh Yigit
> Sent: Monday, April 27, 2020 7:56 PM
> To: Gaëtan Rivet <grive at u256.net>; wangyunjian
> <wangyunjian at huawei.com>
> Cc: dev at dpdk.org; jerry.lilijun at huawei.com; xudingke at huawei.com;
> stable at dpdk.org
> Subject: Re: [dpdk-dev] [dpdk-stable] [PATCH] net/failsafe: fix fd leak
> 
> On 4/27/2020 12:12 PM, Gaëtan Rivet wrote:
> > On 27/04/20 18:44 +0800, wangyunjian wrote:
> >> From: Yunjian Wang <wangyunjian at huawei.com>
> >>
> >> Zero is a valid fd. The fd won't be closed thus leading fd leak, when
> >> it is zero.
> >>
> >> Fixes: f234e5bd996d ("net/failsafe: register slaves Rx interrupts")
> >> Fixes: 9e0360aebf23 ("net/failsafe: register as Rx interrupt mode")
> >> Cc: stable at dpdk.org
> >>
> >
> > Hello Yunjian,
> >
> > Nothing prevents a DPDK app from closing 0 and getting it from another
> > call, good catch.
> >
> >> Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
> >
> > Acked-by: Gaetan Rivet <grive at u256.net>
> 
> Applied to dpdk-next-net/master, thanks.

This patch is causing Testpmd to quit when I issue a "port stop" command. Testpmd log:

"""
x86_64-native-linuxapp-gcc/build/app/test-pmd/testpmd -n 4 -- -i --forward-mode=mac
EAL: Detected 8 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: No available hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: PCI device 0002:00:02.0 on NUMA socket 0
EAL:   probe driver: 15b3:1004 net_mlx4
Interactive-mode selected
Set mac packet forwarding mode
Warning: NUMA should be configured manually by using --port-numa-config and --ring-numa-config parameters along with --numa.
testpmd: create a new mbuf pool <mbuf_pool_socket_0>: n=203456, size=2176, socket=0
testpmd: preferred mempool ops selected: ring_mp_mc

Warning! port-topology=paired and odd forward ports number, the last port will pair with itself.

Configuring Port 1 (socket 0)
Port 1: 00:15:5D:26:2B:00
Checking link statuses...
Done
testpmd> port stop 1
Stopping ports...
Checking link statuses...
Done
testpmd>
Stopping port 1...
Stopping ports...
Done

Shutting down port 1...
Closing ports...
Done

Bye...
"""

My terminal gets broken at this point, and I have to reinitialize it with a "reset".

- Ali