[ovs-discuss] ovs-vswitchd aborted

Eli Britstein eli.britstein at toganetworks.com
Thu Mar 31 10:42:04 UTC 2016


I was able to take a backtrace, after attaching gdb to the process.
Please see attached.

> -----Original Message-----
> From: discuss [mailto:discuss-bounces at openvswitch.org] On Behalf Of Eli
> Britstein
> Sent: Thursday, 31 March, 2016 10:11 AM
> To: Flavio Leitner
> Cc: bugs at openvswitch.org
> Subject: Re: [ovs-discuss] ovs-vswitchd aborted
>
> Update:
>
> I changed log levels and now it has some more info in ovs-vswitchd.log.
> It shows a debug message in which I can see it received my packet:
>
> 2016-03-31T08:00:10.087Z|00274|poll_loop|DBG|wakeup due to [POLLIN] on
> fd 36 (FIFO pipe:[2229598]) at lib/dpif-netdev.c:2625
> 2016-03-31T08:00:10.124Z|00004|dpif_netdev(pmd60)|DBG|ovs-netdev:
> miss upcall:
> skb_priority(0),skb_mark(0),recirc_id(0),dp_hash(0),in_port(2),eth(src=3c:97
> :0e:a4:4f:d0,dst=46:61:ec:71:a3:30),eth_type(0x0800),ipv4(src=10.200.201.22
> 0,dst=255.255.255.255,proto=17,tos=0,ttl=128,frag=no),udp(src=60772,dst=2
> 008)
> udp,vlan_tci=0x0000,dl_src=3c:97:0e:a4:4f:d0,dl_dst=46:61:ec:71:a3:30,nw_s
> rc=10.200.201.220,nw_dst=255.255.255.255,nw_tos=0,nw_ecn=0,nw_ttl=128
> ,tp_src=60772,tp_dst=2008 udp_csum:fbe2
> 2016-03-
> 31T08:00:10.124Z|00005|ofproto_dpif_xlate(pmd60)|DBG|/proc/sys/net/co
> re/netdev_max_backlog: using 1000 max_backlog
>
>
>
> > -----Original Message-----
> > From: discuss [mailto:discuss-bounces at openvswitch.org] On Behalf Of
> > Eli Britstein
> > Sent: Thursday, 31 March, 2016 9:45 AM
> > To: Flavio Leitner
> > Cc: bugs at openvswitch.org
> > Subject: Re: [ovs-discuss] ovs-vswitchd aborted
> >
> > [eli at saturn94 ~]$ ll /proc/sys/kernel/core_* -rw-r--r--. 1 root root 0
> > Mar 21
> > 11:41 /proc/sys/kernel/core_pattern -rw-r--r--. 1 root root 0 Mar 21
> > 11:41 /proc/sys/kernel/core_pipe_limit -rw-r--r--. 1 root root 0 Mar
> > 21 11:41 /proc/sys/kernel/core_uses_pid
> >
> > [eli at saturn94 ~]$ cat /proc/sys/kernel/core_pattern
> > |/usr/libexec/abrt-hook-ccpp %s %c %p %u %g %t %e
> >
> > [eli at saturn94 ~]$ /usr/libexec/abrt-hook-ccpp
> > Usage: /usr/libexec/abrt-hook-ccpp SIGNO CORE_SIZE_LIMIT PID UID GID
> > TIME BINARY_NAME [HOSTNAME]
> >
> > [eli at saturn94 ~]$ cat /proc/sys/kernel/core_pipe_limit
> > 4
> > [eli at saturn94 ~]$ cat /proc/sys/kernel/core_uses_pid
> > 1
> >
> > [eli at saturn94 ~]$ coredumpctl list ovs-vswitchd No coredumps found.
> > [eli at saturn94 ~]$ coredumpctl list
> > No coredumps found.
> >
> > What's next?
> >
> > Thanks,
> > Eli
> >
> > > -----Original Message-----
> > > From: Flavio Leitner [mailto:fbl at sysclose.org]
> > > Sent: Thursday, 31 March, 2016 12:20 AM
> > > To: Eli Britstein
> > > Cc: bugs at openvswitch.org
> > > Subject: Re: [ovs-discuss] ovs-vswitchd aborted
> > >
> > > On Wed, Mar 30, 2016 at 01:52:04PM +0000, Eli Britstein wrote:
> > > > Hi
> > > >
> > > > I want to test performance and latency with dpdkr ports.
> > > > In order to do so, I configured 2 such ports, and wrote a test
> > > > program that
> > > lookup for the relevant rings, and streams traffic into the rings. I
> > > run this program as a secondary DPDK process.
> > > > Once I invoke the program, and I enqueuer mbufs to the rings, ovs-
> > > vswitchd is "killed by SIGABRT (core dumped)".
> > > > I first thought my packet might be corrupted, so I captured a
> > > > valid packet
> > > and initialize my packets with the bytes of it.
> > > > I have tried to invoke it with a log file, but there is no message
> > > > there when
> > > the problem occurs. Also, no message in "dmesg -w" when the problem
> > > occurs.
> > > > I also tried to invoke it after "ulimit -c unlimited", but I could
> > > > not find any
> > > core dump.
> > >
> > > You might want to look at /proc/sys/kernel/core_* and coredumpctl(1).
> > > fbl
> > >
> > >
> >
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This email and any files transmitted and/or attachments with it are confidential and proprietary information of
Toga Networks Ltd., and intended solely for the use of the individual or entity to whom they are addressed.
If you have received this email in error please notify the system manager. This message contains confidential
information of Toga Networks Ltd., and is intended only for the individual named. If you are not the named
addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately
by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not
the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on
the contents of this information is strictly prohibited.
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