RE: how to run dpdk app with valgrind

[Balakrishnan K <Balakrishnan.K1@tatacommunications.com>]

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Hi Pravin,
     Thanks for the response.
I have changed the value to 0.
cat /proc/sys/kernel/randomize_va_space
0

Tried running dpdk sample application (helloworld ) before running my application but still same warning is reported.
The sample application is not starting up.
When I tired with valgrind from https://github.com/bisdn/valgrind-hugepages  application getting crashed.

Am I missing any other configuration?

/root/valgrind-3.19.0/val_install/bin/valgrind --soname-synonyms=somalloc=librte_malloc.so* --leak-check=full --log-file=valgrind-out.txt  ./dpdk-helloworld -l 0-3 -n 4
EAL: Detected 80 lcore(s)
EAL: Detected 2 NUMA nodes
EAL: Detected static linkage of DPDK
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: Probing VFIO support...
EAL: WARNING! Base virtual address hint (0xa80001000 != 0x1040000000) not respected!
EAL:    This may cause issues with mapping memory into secondary processes

From: Pathak, Pravin <pravin.pathak@intel.com>
Sent: 06 July 2022 17:15
To: Balakrishnan K <Balakrishnan.K1@tatacommunications.com>; users@dpdk.org
Subject: RE: how to run dpdk app with valgrind

DPDK documentation says so for multi-process case.


  *   The multi-process feature requires that the exact same hugepage memory mappings be present in all applications. The Linux security feature - Address-Space Layout Randomization (ASLR) can interfere with this mapping, so it may be necessary to disable this feature in order to reliably run multi-process applications.


Regards,
Bala

From: Balakrishnan K <Balakrishnan.K1@tatacommunications.com<mailto:Balakrishnan.K1@tatacommunications.com>>
Sent: Wednesday, July 6, 2022 1:54 AM
To: Pathak, Pravin <pravin.pathak@intel.com<mailto:pravin.pathak@intel.com>>; users@dpdk.org<mailto:users@dpdk.org>
Subject: RE: how to run dpdk app with valgrind

Hi Pravin,
   Randomization is not turned off.
cat /proc/sys/kernel/randomize_va_space
2

Do I need to turn off the randomization?

Regards,
Bala

From: Pathak, Pravin <pravin.pathak@intel.com<mailto:pravin.pathak@intel.com>>
Sent: 05 July 2022 18:53
To: Balakrishnan K <Balakrishnan.K1@tatacommunications.com<mailto:Balakrishnan.K1@tatacommunications.com>>; users@dpdk.org<mailto:users@dpdk.org>
Subject: RE: how to run dpdk app with valgrind


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Is randomization turned off ?

echo 0 > /proc/sys/kernel/randomize_va_space

Pravin

From: Balakrishnan K <Balakrishnan.K1@tatacommunications.com<mailto:Balakrishnan.K1@tatacommunications.com>>
Sent: Tuesday, July 5, 2022 7:11 AM
To: users@dpdk.org<mailto:users@dpdk.org>
Subject: how to run dpdk app with valgrind

Hi All,
    Is there any documents available to run the dpdk application with valgrind.
I am trying to run our application with dpdk getting warning and the process is not starting up.



IPv4 IP : 1.1.1.1
IPv6 IP : 0::0
EAL: Detected 80 lcore(s)
EAL: Detected 2 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Selected IOVA mode 'PA'
EAL: Probing VFIO support...
EAL: WARNING! Base virtual address hint (0xa80001000 != 0x1040000000) not respected!
EAL:    This may cause issues with mapping memory into secondary processes

Could you please help on this?

Regards,
Bala

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