ERROR: v4l2 capture: mxc_v4l_dqueue() interrupt received PU: Power-off latency exceeded, new value 27667 ns segmentation fault while running test-video application for hardware caam with libsrtp.

[veeranjaneyulug]

Hi all,

we compiled/build libsrtp-1.5.3 source and cryptodev module ,openssl ,caam (cryptodev 1.6 installed on target board).kernel version 3.14.28 with yocto 1.7.

we added hardware engine support code in libsrtp source file .file path given below.

libsrtp-1.5.3/crypto/cipher/aes_icm_ossl.c

libsrtp and openssl changes patches attached .crypto modules patch same as openssl .

we added ctr support in openssl and crypto module eng_cryptodev.c file.

First on target board we inserted #modprobe cryptodev

#./test-video

pc side:

gst-launch-1.0 -v rtspsrc location=rtsps://192.168.2.224:8554/test  tls-validation-flags=generic-error user-id=user user-pw=password ! decodebin ! autovideosink

we observed streaming .at that time we checked on target board

#lsmod

cryptodev  is showing 1.with out running streaming cryptodev is 0.

===>with out cryptodev and software srtp the cpu % is 20+

#top

with cryptodev and hardware srtp support cpu % is 3%

streaming happening but after min 5 seconds on tar get we got segmentation fault issue came .

we dont know whis is the problem .for test-video application or libsrtp support code and openssl.

can you any body clarify me..

root@imx6_zcam:/home# ./test-video

stream ready at rtsps://127.0.0.1:8554/test

ERROR: v4l2 capture: slave not found!

====== IMXV4L2SRC: 4.0.3 build on May  3 2016 12:44:34. ======

null_cipher.c:crypto/cipher/null_cipher.c null_cipher_alloc

null_cipher.c:crypto/cipher/null_cipher.c null_cipher_alloc

Engine successfully enabled

GB -> Hardware Encryption

00000000000000000000000000000000

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[INFO]  Product Info: i.MX6Q/D/S

====== VPUENC: 4.0.3 build on Mar  1 2016 11:13:20. ======

        wrapper: 1.0.58 (VPUWRAPPER_ARM_LINUX Build on May  3 2016 12:43:46)

        vpulib: 5.4.28

        firmware: 3.1.1.46063

[INFO]  ringBufferEnable 0, chromaInterleave 0, mapType 0, linear2TiledEnable 0

84195000000044f100059f1f7861

84195000000045840006cf22b11d017d6c81ca0c14e4ef9a11c757365723137333238363237353840686f73742d66653333363765346

(test-video:728): GStreamer-WARNING **: Trying to set string on structure field 'tool', but string is not valid UTF-8. Please file a bug.

Segmentation fault

root@imx6_zcam:/home# ./test-video &

[1] 747

root@imx6_zcam:/home# stream ready at rtsps://127.0.0.1:8554/test

ERROR: v4l2 capture: slave not found!

====== IMXV4L2SRC: 4.0.3 build on May  3 2016 12:44:34. ======

null_cipher.c:crypto/cipher/null_cipher.c null_cipher_alloc

null_cipher.c:crypto/cipher/null_cipher.c null_cipher_alloc

Engine successfully enabled

GB -> Hardware Encryption

00000000000000000000000000000000

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[INFO]  Product Info: i.MX6Q/D/S

====== VPUENC: 4.0.3 build on Mar  1 2016 11:13:20. ======

        wrapper: 1.0.58 (VPUWRAPPER_ARM_LINUX Build on May  3 2016 12:43:46)

        vpulib: 5.4.28

        firmware: 3.1.1.46063

[INFO]  ringBufferEnable 0, chromaInterleave 0, mapType 0, linear2TiledEnable 0

50486eca00000

50486eca000000732600155f33ce1c02d5af81ca0cd413fd611c7573657232

(test-video:747): GStreamer-WARNING **: Trying to set string on structure field 'cname', but string is not valid UTF-8. Please file a bug.

50486eca00000073c400078f391042025cb481ca0cd413fd611c757365723233323436303131353440686f73742d

(test-video:747): GStreamer-WARNING **: Trying to set string on structure field 'cname', but string is not valid UTF-8. Please file a bug.

50486eca00000074c50013ff3f358023cdd81ca0cd413fd611c757365723233323436303131353440686f73742d6331666666333037694753747265616d6572000374e2311d35f9af1c5d7f5a74170418390ada5c

ERROR: v4l2 capture: mxc_v4l_dqueue() interrupt received

PU: Power-off latency exceeded, new value 27667 ns

Segmentation fault

Thanks & Regards

veeranjaneyulu

Original Attachment has been moved to: 0001_imx6-zcam-openssl_with_caam_support.patch.zip

Original Attachment has been moved to: 0001_imx6_zcam_libsrtp_hardware_caam_support.patch.zip

[igorpadykov]

Hi veeranjaneyulu

for "power-off latency exceeded" error please look at

http://permalink.gmane.org/gmane.linux.drivers.devicetree/61770

Best regards

igor

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Note: If this post answers your question, please click the Correct Answer button. Thank you!

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[864535720]

hi,igorpadykov

I also encountered a problem with power outage delay: PU: Power-on latency exceeded, new value 2224666 ns
The link you gave in the post is invalid：http://permalink.gmane.org/gmane.linux.drivers.devicetree/61770 can you update the link?

look forward to your reply

[veeranjaneyulug]

Thanks igor ,

But we are using linux kernel version 3.14.28 actually your suggestion is suitable for 3.0.35 version right?

That power latency issue got some times only not frequent.But we got frequent error is segmentation fault.

flow is :

test-video===>libgstsrtp===>libsrtp===>openssl==>cryptodev===>hardware caam.

we added some engine support code below source files

1.libsrtp source crypto/cipher/aes_icm_ossl.c file

2.openssl also added some support code in crypto/engine/eng_cryptodev.c

3.crypo-modules also added some code in crypto/engine/eng_cryptodev.c

we run gstreamer1.0-rtsp-server's test application test-video on target board.But streaming happening ,after min 6 six seconds video closed and given segmentation fault.At that time we checked cpu % with cam support is 3% and with out caam support 20%.with software srtp streaming continuously working with test-video .Same test-video application used but in place of software libsrtp we used hardware libsrtp with cryptodev.This time only give segmentation fault ,mxc_v4l2_capture_dequeue_interrupt received,some time test-video double free error gave.

I'm in confusion which one gave segmentaion fault .either gstreamer test-video or libsrtp i dont know .

Thanks & Regards

veeranjaneyulu

[letan]

Did you solve the issue?

I run into the same problem.

[igorpadykov]

are you able to reproduce that on Sabre board?

In general one can debug it using AN4553

http://cache.nxp.com/files/32bit/doc/app_note/AN4553.pdf

~igor