Segmentation Fault

[mielune]

Hi,

I'm testing RPiPlay on Ubuntu 20.04 on a Razer Laptop (nvidia 1070 & intel GPU).

Client is an iPhone 11 with iOS 14.2, trying screen mirroring.

Just after the connection step, a coredump is raised.

No coredump file found. Here the logs with debug activated (I tryed with and without -l option):

./rpiplay -l -d         
Using low-latency mode
Initialized server socket(s)
*** WARNING *** The program 'rpiplay' uses the Apple Bonjour compatibility layer of Avahi.
*** WARNING *** Please fix your application to use the native API of Avahi!
*** WARNING *** For more information see <http://0pointer.de/blog/projects/avahi-compat.html>
Accepted IPv4 client on socket 21
Local: 192.168.68.107
Remote: 192.168.68.126
httpd receiving on socket 21
conn_request
Handling request GET with URL /info
INFO len = -1895839668
httpd receiving on socket 21
conn_request
Handling request POST with URL /pair-setup
httpd receiving on socket 21
conn_request
Handling request POST with URL /pair-verify
httpd receiving on socket 21
conn_request
Handling request POST with URL /pair-verify
httpd receiving on socket 21
conn_request
Handling request POST with URL /fp-setup
httpd receiving on socket 21
conn_request
Handling request POST with URL /fp-setup
httpd receiving on socket 21
conn_request
Handling request SETUP with URL rtsp://192.168.68.107/1661136025806589272
DACP-ID: C1671877E33BD551
Active-Remote: 2457178172
Transport: null
SETUP 1
eiv_len = 16
ekey_len = 72
fairplay_decrypt ret = 0
timing_rport = 56035
raop_ntp parse remote ip = 192.168.68.126
raop_ntp starting time
raop_rtp parse remote ip = 192.168.68.126
raop_rtp_mirror parse remote ip = 192.168.68.126
eport = 34059, tport = 37177
raop_ntp send_len = 32
raop_ntp receive time type_t packetlen = 32
raop_ntp sync correction = -1606605395131088
Accepted IPv4 client on socket 26
Local: 192.168.68.107
Remote: 192.168.68.126
httpd receiving on socket 21
conn_request
Handling request GET with URL /info
INFO len = -1895839668
httpd receiving on socket 21
conn_request
Handling request GET_PARAMETER with URL rtsp://192.168.68.107/1661136025806589272
httpd receiving on socket 21
conn_request
Handling request RECORD with URL rtsp://192.168.68.107/1661136025806589272
raop_handler_record
httpd receiving on socket 21
conn_request
Handling request SET_PARAMETER with URL rtsp://192.168.68.107/1661136025806589272
httpd receiving on socket 21
conn_request
Handling request SETUP with URL rtsp://192.168.68.107/1661136025806589272
DACP-ID: C1671877E33BD551
Active-Remote: 2457178172
Transport: null
type = 110
streamConnectionID = 17611729437630091219
raop_rtp_mirror starting mirroring
Mirroring initialized successfully
raop_rtp_mirror accepting client
raop_rtp_mirror width_source = 450.000000 height_source = 972.000000 width = 470.000000 height = 1016.000000
raop_rtp_mirror sps size = 17
raop_rtp_mirror pps size = 4
raop_rtp_mirror video ntp = 1607549474863204, now = 1607549474818180, latency = -45024
raop_rtp_mirror video ntp = 1607549474913202, now = 1607549474833210, latency = -79992
raop_rtp_mirror video ntp = 1607549474946533, now = 1607549474866732, latency = -79801
raop_rtp_mirror video ntp = 1607549474963199, now = 1607549474883677, latency = -79522
raop_rtp_mirror video ntp = 1607549474979865, now = 1607549474904724, latency = -75141
raop_rtp_mirror video ntp = 1607549474996531, now = 1607549474918010, latency = -78521
raop_rtp_mirror video ntp = 1607549475013197, now = 1607549474936837, latency = -76360
raop_rtp_mirror video ntp = 1607549475029863, now = 1607549474955172, latency = -74691
raop_rtp_mirror video ntp = 1607549475046529, now = 1607549474968889, latency = -77640
raop_rtp_mirror video ntp = 1607549475063194, now = 1607549474986694, latency = -76500
raop_rtp_mirror video ntp = 1607549475079860, now = 1607549475002675, latency = -77185
[1]    42399 segmentation fault (core dumped)  ./rpiplay -l -d

[pallas]

Can you please provide a core dump or a backtrace?

[mielune]

Where can I found the core dump on Ubuntu 20.04 ?

Le sam., déc. 19, 2020 à 02:45, Derrick Lyndon Pallas notifications@github.com a écrit :

Can you please provide a core dump or a backtrace?

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[pallas]

Rebuild rpiplay with -DCMAKE_BUILD_TYPE=Debug (you have to rm CMakeCache.txt to do this) Make sure you have gdb installed. Download this script: https://gist.github.com/pallas/035bf6beb9bbf0872d84b38ebacb0cde/raw/803ede36b919e460a863c7f913ec932c27ed44a5/gdb-bt.sh Make it executable with chmod +x gdb-bt.sh Run your regular command line with gdb-bt.sh in front of it, e.g. ./gdb-bt.sh ./rpiplay ... If it crashes, you should get a backtrace.

[mielune]

Rebuilt with Debug and attach you have the stacktrace. Run with -d param.

rpiplay.log

Hope it can help :smile:

[pallas]

Thanks for the backtrace. That fault is deep inside gstreamer, and maybe inside your video driver. I'm pretty confident that it is not an rpiplay bug.

[mielune]

Ok

[markuspi]

Getting the same error on Kubuntu 21.04. Backtrace of the crash points at the exact same location

crash.log

[markuspi]

I followed this comment's advice to install the non-free version of the intel-media-va-driver package, which solved my issue.

sudo apt install intel-media-va-driver-non-free