how to run dpdk app with valgrind

how to run dpdk app with valgrind

[Balakrishnan K]

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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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RE: how to run dpdk app with valgrind

[Pathak, Pravin]

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Is randomization turned off ?

echo 0 > /proc/sys/kernel/randomize_va_space

Pravin

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

[Stephen Hemminger]

On Tue, 5 Jul 2022 11:10:37 +0000
Balakrishnan K <Balakrishnan.K1@tatacommunications.com> wrote:

> 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

What architecture (x86)? What DPDK version? What version of valgrind?
Are you using VFIO, igb_uio or other method of hardware access?

Valgrind works for us on Arm64 and VFIO.

RE: how to run dpdk app with valgrind

[Balakrishnan K]

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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>
Sent: 05 July 2022 18:53
To: Balakrishnan K <Balakrishnan.K1@tatacommunications.com>; users@dpdk.org
Subject: RE: how to run dpdk app with valgrind


CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
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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RE: how to run dpdk app with valgrind

[Balakrishnan K]

Hi Stephen,
    Please find the response below.
What architecture (x86)?

Architecture is x86.
 
What DPDK version?

DPDK version 20.11

 What version of valgrind?
valgrind-3.19.0

Are you using VFIO, igb_uio or other method of hardware access?

Igbuio

Regards,
Bala 


-----Original Message-----
From: Stephen Hemminger <stephen@networkplumber.org> 
Sent: 05 July 2022 21:34
To: Balakrishnan K <Balakrishnan.K1@tatacommunications.com>
Cc: users@dpdk.org
Subject: Re: how to run dpdk app with valgrind

CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.

On Tue, 5 Jul 2022 11:10:37 +0000
Balakrishnan K <Balakrishnan.K1@tatacommunications.com> wrote:

> 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

What architecture (x86)? What DPDK version? What version of valgrind?
Are you using VFIO, igb_uio or other method of hardware access?

Valgrind works for us on Arm64 and VFIO.

RE: how to run dpdk app with valgrind

[Balakrishnan K]

Hi Stephen,
   Checked the valgrind log file during dpdk app start up.

The below warning is seen in logs.  Any tunning is need for large range allocation while using dpdk app with valgrind.
Because without valgrind application is running smoothly.
Any suggestion would be helpful .
==259414== Warning: set address range perms: large range [0x140000000, 0x980000000) (noaccess)
==259414== Warning: set address range perms: large range [0x940000000, 0x980000000) (noaccess)
==259414== Warning: set address range perms: large range [0x100b41b000, 0x184b41b000) (noaccess)
==259414== Warning: set address range perms: large range [0x100b41b000, 0x184b41b000) (noaccess)
==259414== Warning: set address range perms: large range [0x100b41b000, 0x184b41b000) (noaccess)
==259414== Warning: set address range perms: large range [0x100b41b000, 0x184b41b000) (noaccess)

Regards,
Bala 
-----Original Message-----
From: Balakrishnan K 
Sent: 06 July 2022 11:31
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: users@dpdk.org
Subject: RE: how to run dpdk app with valgrind

Hi Stephen,
    Please find the response below.
What architecture (x86)?

Architecture is x86.
 
What DPDK version?

DPDK version 20.11

 What version of valgrind?
valgrind-3.19.0

Are you using VFIO, igb_uio or other method of hardware access?

Igbuio

Regards,
Bala 


-----Original Message-----
From: Stephen Hemminger <stephen@networkplumber.org> 
Sent: 05 July 2022 21:34
To: Balakrishnan K <Balakrishnan.K1@tatacommunications.com>
Cc: users@dpdk.org
Subject: Re: how to run dpdk app with valgrind

CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.

On Tue, 5 Jul 2022 11:10:37 +0000
Balakrishnan K <Balakrishnan.K1@tatacommunications.com> wrote:

> 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

What architecture (x86)? What DPDK version? What version of valgrind?
Are you using VFIO, igb_uio or other method of hardware access?

Valgrind works for us on Arm64 and VFIO.

RE: how to run dpdk app with valgrind

[Pathak, Pravin]

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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.


From: Balakrishnan K <Balakrishnan.K1@tatacommunications.com>
Sent: Wednesday, July 6, 2022 1:54 AM
To: Pathak, Pravin <pravin.pathak@intel.com>; 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


CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
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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RE: how to run dpdk app with valgrind

[Balakrishnan K]

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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


CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe.
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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