Can you please share the following details?

1- Your command line arguments.
2- Contents of mos.conf file.
3- Contents of simple_firewall.conf file.
4. Backtrace without gcc's "-O3" switch
5. Output of cat /proc/cpuinfo
6. The values of mctx->cpu and num_cpus.

Thanks!
The program crashes during initialisation which means that the start-up parameters are not correctly being set (which also means that I am missing some error handling in api.c as well). I will patch-up the code once I know more details.

from mos-networking-stack.

It is long but here it is:

1- Your command line arguments.
/home/dpdk/mOS-networking-stack/samples/simple_firewall# ./simple_firewall

EAL: Detected lcore 0 as core 0 on socket 0
EAL: Detected lcore 1 as core 0 on socket 0
EAL: Detected lcore 2 as core 1 on socket 0
EAL: Detected lcore 3 as core 1 on socket 0
EAL: Detected lcore 4 as core 2 on socket 0
EAL: Detected lcore 5 as core 2 on socket 0
EAL: Detected lcore 6 as core 3 on socket 0
EAL: Detected lcore 7 as core 3 on socket 0
EAL: Support maximum 128 logical core(s) by configuration.
EAL: Detected 8 lcore(s)
.....................CUT.........

===== MOS configuration =====
| num_cores: 8 <================ 8 logical cores
| nb_mem_channels: 4
| max_concurrency: 100000
| rmem_size: 8192
| wmem_size: 8192
| tcp_tw_interval: 0
| tcp_timeout: 30000
| multiprocess: false
| mos_log: logs/
| stat_print: dpdk0 dpdk1
| forward: forward
...........................CUT...............
+===== NIC Forwarding table configuration (1 entries) =====
| NIC Forwarding Entry: dpdk0 <---> dpdk1 |
| NIC Forwarding Index Table: |
| 0 --> 1 |
| 1 --> 0 |
| 2 --> -1 |
| 3 --> -1 |
| 4 --> -1 |
| 5 --> -1 |
| 6 --> -1 |
| 7 --> -1 |
| 8 --> -1 |
| 9 --> -1 |
| 10 --> -1 |
| 11 --> -1 |
| 12 --> -1 |
| 13 --> -1 |
| 14 --> -1 |
| 15 --> -1 |

Configuration updated by mtcp_setconf().
Segmentation fault (core dumped)

I ran gdb ./simple_firewall to get the backtrace.

2- Contents of mos.conf file.

root@r210:/home/dpdk/mOS-networking-stack/samples/simple_firewall# cat config/mos.conf
############### MOS configuration file ###############

#######################

MOS-RELATED OPTIONS

#######################
mos {
forward = 1

    #######################
    ##### I/O OPTIONS #####
    #######################
    # number of memory channels per socket [mandatory for DPDK]
    nb_mem_channels = 4

    # devices used for MOS applications [mandatory]
    netdev {
            dpdk0 0x00FF
            dpdk1 0x00FF
    }

    #######################
    ### LOGGING OPTIONS ###
    #######################
    # NICs to print network statistics per second
    # if enabled, mTCP will print xx Gbps and xx pps for RX and TX
    stat_print = dpdk0 dpdk1

    # A directory contains MOS system log files
    mos_log = logs/

    ########################
    ## NETWORK PARAMETERS ##
    ########################
    # This to configure static arp table
    # (Destination IP address) (Destination MAC address)
    arp_table {
    }

    # This is to configure static routing table
    # (Destination address)/(Prefix) (Device name)
    route_table {
    }

    # This is to configure static bump-in-the-wire NIC forwarding table
    # DEVNIC_A DEVNIC_B ## (e.g. dpdk0 dpdk1)
    nic_forward_table {
            dpdk0 dpdk1
    }

    ########################
    ### ADVANCED OPTIONS ###
    ########################
    # if required, uncomment the following options and change them

    # maximum concurrency per core [optional / default : 100000]
    # (MOS-specific parameter for preallocation)
    # max_concurrency = 100000

    # disable the ring buffer [optional / default : 0]
    # use disabled buffered managment only for standalone monitors.
    # end host applications always need recv buffers for TCP!
    # no_ring_buffers = 1

    # receive buffer size of sockets [optional / default : 8192]
    # rmem_size = 8192

    # send buffer size of sockets [optional / default : 8192]
    # wmem_size = 8192

    # tcp timewait seconds [optional / default : 0]
    # tcp_tw_interval = 30

    # tcp timeout seconds [optional / default : 30]
    # (set tcp_timeout = -1 to disable timeout checking)
    # tcp_timeout = 30

}

3- Contents of simple_firewall.conf file.
root@r210:/home/dpdk/mOS-networking-stack/samples/simple_firewall# cat config/simple_firewall.conf

Simple firewall rules

#(act) (src) (dst) (port)
#ACCEPT 10.0.0.7/24 10.0.0.8/24 dport:80
DROP 10.0.0.0/24 10.0.0.0/24 dport:80
ACCEPT 10.0.1.7 10.0.1.9 sport:1024
ACCEPT 10.0.2.7 10.0.2.9
ACCEPT 10.0.3.0/24 10.0.3.0/24

4. Backtrace without gcc's "-O3" switch

Program received signal SIGSEGV, Segmentation fault.
0x00000000004403ff in GetMTCPManager (mctx=0x7fffffffd290) at api.c:64
64 if (g_mtcp[mctx->cpu]->ctx->done || g_mtcp[mctx->cpu]->ctx->exit) {
(gdb) bt
#0 0x00000000004403ff in GetMTCPManager (mctx=0x7fffffffd290) at api.c:64
#1 0x00000000004733c6 in mtcp_define_event (event=1, filter=0x43410c , arg=0x0) at scalable_event.c:718
#2 0x00000000004345d2 in main (argc=1, argv=0x7fffffffe6c8) at simple_firewall.c:475

5. Output of cat /proc/cpuinfo

root@r210:/home/dpdk/mOS-networking-stack/samples/simple_firewall# cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping : 7
microcode : 0x14
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 6400.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping : 7
microcode : 0x14
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 6400.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 2
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping : 7
microcode : 0x14
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 1
cpu cores : 4
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 6400.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 3
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping : 7
microcode : 0x14
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 1
cpu cores : 4
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 6400.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 4
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping : 7
microcode : 0x14
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 2
cpu cores : 4
apicid : 4
initial apicid : 4
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 6400.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 5
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping : 7
microcode : 0x14
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 2
cpu cores : 4
apicid : 5
initial apicid : 5
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 6400.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 6
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping : 7
microcode : 0x14
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 3
cpu cores : 4
apicid : 6
initial apicid : 6
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 6400.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 42
model name : Intel(R) Xeon(R) CPU E31230 @ 3.20GHz
stepping : 7
microcode : 0x14
cpu MHz : 1600.000
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 3
cpu cores : 4
apicid : 7
initial apicid : 7
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid
bogomips : 6400.26
clflush size : 64
cache_alignment : 64
address sizes : 36 bits physical, 48 bits virtual
power management:

6. The values of mctx->cpu and num_cpus.

(gdb) p mctx->cpu
$1 = 0

(gdb) p num_cpus
$2 = 8

from mos-networking-stack.

Hi Vincent,

I added some error checks that will hopefully fix the crash that you are seeing.

from mos-networking-stack.

yes it fixed the crash.

from mos-networking-stack.