[dpdk-dev] [Bug 462] command kvargs_autotest excute failed on freebsd with gcc and clang

[bugzilla at dpdk.org]

https://bugs.dpdk.org/show_bug.cgi?id=462

            Bug ID: 462
           Summary: command kvargs_autotest excute failed on freebsd with
                    gcc and clang
           Product: DPDK
           Version: 20.05
          Hardware: x86
                OS: FreeBSD
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: testpmd
          Assignee: dev at dpdk.org
          Reporter: zhiminx.huang at intel.com
  Target Milestone: ---

---------------------------------Description-----------------------------------
when i start up testpmd and excuted 'kvargs_autotest' with gcc and clang on
freebsd,the dpdk output 'Segmentation fault' and testpmd drop out,the expected
output is 'test ok'.
---------------------------------reproduce steps-------------------------------
1.compile dpdk by clang
export RTE_SDK=`pwd`
export RTE_TARGET=x86_64-native-bsdapp-clang
gmake -j install T=x86_64-native-bsdapp-clang

2.load driver and bind nic driver in freebsd
kldload ./x86_64-native-bsdapp-clang/kmod/contigmem.ko
kldload ./x86_64-native-bsdapp-clang/kmod/nic_uio.ko
Pciconf -l
kenv hw.nic_uio.bdfs="134:0:0,134:0:1"

3.start testpmd
./x86_64-native-bsdapp-clang/app/test -l 1,2,4,6 -n 4

4.execute command
kvargs_autotest

5.output
RTE>>kvargs_autotest
== test valid case ==
== test invalid case ==
Segmentation fault

6.Expected Result
RTE>>kvargs_autotest
== test valid case ==
== test invalid case ==
Test OK

comments：gcc have the same issue as clang.

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