Random Crash

[Pankaj Pandey]

Hi Guys,
I am Getting  random crashed 

some cases
1. call to number(PSTN call )

after ringing network off
2. Connect hotspot device 

call to any number  after ringing  hot spot mobile data off 

Some time getting crashed with Signal 11
I/AssistStructure: Flattened final assist data: 2156 bytes, containing 1 windows, 13 views
A/libc: Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x4 in tid 31404 (AudioTrackJavaT), pid 30342 

      A  Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x4 in tid 20720 (TaskQueuePacedS), pid 17745

Please provide solution anyone .

Thanks 

[Muhammad Usman Bashir]

Could you please provide the dump files from your application that pertains to the WebRTC Native stack? This could assist in steering us towards the right direction.

[Pankaj Pandey]

I am using  android native (not web).

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[Muhammad Usman Bashir]

Please provide some additional logs with this crash report, if this crash is reproducible.

I am assuming, you are getting crash while shifting network from WIFI to cellular network. Right?

[Pankaj Pandey]

I am assuming, you are getting crash while shifting network from WIFI to cellular network. Right?

No .I am completely off network not switch.

Please find some other logs 
2023-07-13 18:45:23.035  6418-9063  libc                    com.kastle.cardinal                  A  Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 in tid 9063 (AudioTrackJavaT), pid 6418 (kastle.cardinal)
2023-07-13 18:45:24.744  9218-9218  DEBUG                   pid-9218                             A  backtrace:
2023-07-13 18:45:24.744  9218-9218  DEBUG                   pid-9218                             A        #00 pc 00000000  <unknown>
2023-07-13 18:45:24.744  9218-9218  DEBUG                   pid-9218                             A        #01 pc 003b9d4d  /data/app/~~nV2M_iKoPc-zW7OFU1o-Sg==/com.kastle.cardinal-_WieBoLdnYB1hXW4p1y3tQ==/base.apk!libjingle_peerconnection_so.so (offset 0x1483000) (BuildId: 4dc37305d35152f6)
2023-07-13 18:45:24.744  9218-9218  DEBUG                   pid-9218                             A        #02 pc 003b6897  /data/app/~~nV2M_iKoPc-zW7OFU1o-Sg==/com.kastle.cardinal-_WieBoLdnYB1hXW4p1y3tQ==/base.apk!libjingle_peerconnection_so.so (offset 0x1483000) (BuildId: 4dc37305d35152f6)
2023-07-13 18:45:24.744  9218-9218  DEBUG                   pid-9218                             A        #03 pc 003fc269  /data/app/~~nV2M_iKoPc-zW7OFU1o-Sg==/com.kastle.cardinal-_WieBoLdnYB1hXW4p1y3tQ==/base.apk!libjingle_peerconnection_so.so (offset 0x1483000) (BuildId: 4dc37305d35152f6)
2023-07-13 18:45:24.744  9218-9218  DEBUG                   pid-9218                             A        #04 pc 003fc1cf  /data/app/~~nV2M_iKoPc-zW7OFU1o-Sg==/com.kastle.cardinal-_WieBoLdnYB1hXW4p1y3tQ==/base.apk!libjingle_peerconnection_so.so (offset 0x1483000) (BuildId: 4dc37305d35152f6)
2023-07-13 18:45:24.744  9218-9218  DEBUG                   pid-9218                             A        #05 pc 003b8d0f  /data/app/~~nV2M_iKoPc-zW7OFU1o-Sg==/com.kastle.cardinal-_WieBoLdnYB1hXW4p1y3tQ==/base.apk!libjingle_peerconnection_so.so (offset 0x1483000) (BuildId: 4dc37305d35152f6)
2023-07-13 18:45:24.757  9218-9218  DEBUG                   pid-9218                             A        #06 pc 00221a37  /data/app/~~nV2M_iKoPc-zW7OFU1o-Sg==/com.kastle.cardinal-_WieBoLdnYB1hXW4p1y3tQ==/base.apk!libjingle_peerconnection_so.so (offset 0x1483000) (BuildId: 4dc37305d35152f6)
2023-07-13 18:45:24.757  9218-9218  DEBUG                   pid-9218                             A        #07 pc 0035f383  /data/app/~~nV2M_iKoPc-zW7OFU1o-Sg==/com.kastle.cardinal-_WieBoLdnYB1hXW4p1y3tQ==/base.apk!libjingle_peerconnection_so.so (offset 0x1483000) (BuildId: 4dc37305d35152f6)
2023-07-13 18:45:24.757  9218-9218  DEBUG                   pid-9218                             A        #08 pc 000d88dd  /apex/com.android.art/lib/libart.so (art_quick_generic_jni_trampoline+44) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.757  9218-9218  DEBUG                   pid-9218                             A        #09 pc 000d3dd5  /apex/com.android.art/lib/libart.so (art_quick_invoke_stub_internal+68) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #10 pc 004f9ce1  /apex/com.android.art/lib/libart.so (art_quick_invoke_static_stub+276) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #11 pc 0012c4b1  /apex/com.android.art/lib/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+160) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #12 pc 00241427  /apex/com.android.art/lib/libart.so (art::interpreter::ArtInterpreterToCompiledCodeBridge(art::Thread*, art::ArtMethod*, art::ShadowFrame*, unsigned short, art::JValue*)+250) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #13 pc 0023992f  /apex/com.android.art/lib/libart.so (bool art::interpreter::DoCall<false, false>(art::ArtMethod*, art::Thread*, art::ShadowFrame&, art::Instruction const*, unsigned short, art::JValue*)+746) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #14 pc 004edcef  /apex/com.android.art/lib/libart.so (MterpInvokeStatic+478) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #15 pc 000ce994  /apex/com.android.art/lib/libart.so (mterp_op_invoke_static+20) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #16 pc 004ad2bc  [anon:dalvik-classes20.dex extracted in memory from /data/app/~~nV2M_iKoPc-zW7OFU1o-Sg==/com.kastle.cardinal-_WieBoLdnYB1hXW4p1y3tQ==/base.apk!classes20.dex] (org.webrtc.audio.WebRtcAudioTrack.-$$Nest$smnativeGetPlayoutData)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #17 pc 004edf27  /apex/com.android.art/lib/libart.so (MterpInvokeStatic+1046) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #18 pc 000ce994  /apex/com.android.art/lib/libart.so (mterp_op_invoke_static+20) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #19 pc 004ac87a  [anon:dalvik-classes20.dex extracted in memory from /data/app/~~nV2M_iKoPc-zW7OFU1o-Sg==/com.kastle.cardinal-_WieBoLdnYB1hXW4p1y3tQ==/base.apk!classes20.dex] (org.webrtc.audio.WebRtcAudioTrack$AudioTrackThread.run+158)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #20 pc 002326e7  /apex/com.android.art/lib/libart.so (art::interpreter::Execute(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame&, art::JValue, bool, bool) (.llvm.10099173905049740095)+250) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #21 pc 0023909b  /apex/com.android.art/lib/libart.so (art::interpreter::EnterInterpreterFromEntryPoint(art::Thread*, art::CodeItemDataAccessor const&, art::ShadowFrame*)+114) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #22 pc 004dc8e9  /apex/com.android.art/lib/libart.so (artQuickToInterpreterBridge+684) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #23 pc 000d8961  /apex/com.android.art/lib/libart.so (art_quick_to_interpreter_bridge+32) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #24 pc 000d3dd5  /apex/com.android.art/lib/libart.so (art_quick_invoke_stub_internal+68) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #25 pc 004f9bb1  /apex/com.android.art/lib/libart.so (art_quick_invoke_stub+280) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #26 pc 0012c49f  /apex/com.android.art/lib/libart.so (art::ArtMethod::Invoke(art::Thread*, unsigned int*, unsigned int, art::JValue*, char const*)+142) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #27 pc 00405841  /apex/com.android.art/lib/libart.so (art::JValue art::InvokeVirtualOrInterfaceWithJValues<art::ArtMethod*>(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, art::ArtMethod*, jvalue const*)+372) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #28 pc 0040594f  /apex/com.android.art/lib/libart.so (art::JValue art::InvokeVirtualOrInterfaceWithJValues<_jmethodID*>(art::ScopedObjectAccessAlreadyRunnable const&, _jobject*, _jmethodID*, jvalue const*)+42) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.758  9218-9218  DEBUG                   pid-9218                             A        #29 pc 00447dbf  /apex/com.android.art/lib/libart.so (art::Thread::CreateCallback(void*)+1090) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.759  9218-9218  DEBUG                   pid-9218                             A        #30 pc 0008170b  /apex/com.android.runtime/lib/bionic/libc.so (__pthread_start(void*)+40) (BuildId: 9d4f6aa585db1e76cb15e0aa4299910e)
2023-07-13 18:45:24.759  9218-9218  DEBUG                   pid-9218                             A        #31 pc 0003a50d  /apex/com.android.runtime/lib/bionic/libc.so (__start_thread+30) (BuildId: 9d4f6aa585db1e76cb15e0aa4299910e)
2023-07-13 18:50:28.073 10880-17585 libc                    com.enablex.demoenablex              A  Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x7d600040086307 in tid 17585 (AudioTrackJavaT), pid 10880 (lex.demoenablex)
2023-07-13 18:50:28.215 17673-17673 DEBUG                   pid-17673                            A  *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
2023-07-13 18:50:28.215 17673-17673 DEBUG                   pid-17673                            A  Build fingerprint: 'motorola/cebu_retailn/cebu:11/RZCS31.Q2-57-12-14/3d8395:user/release-keys'
2023-07-13 18:50:28.215 17673-17673 DEBUG                   pid-17673                            A  Revision: 'pvt'
2023-07-13 18:50:28.215 17673-17673 DEBUG                   pid-17673                            A  ABI: 'arm64'
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A  Timestamp: 2023-07-13 18:50:28+0530
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A  pid: 10880, tid: 17585, name: AudioTrackJavaT  >>> com.enablex.demoenablex <<<
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A  uid: 10512
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A  signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x7d600040086307
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A      x0  b4000078700346f0  x1  000000770e10c510  x2  000000770e10c480  x3  0000000000000010
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A      x4  0000000000000000  x5  b4000079700763d0  x6  0000000000000000  x7  0000000000000000
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A      x8  5a7d600040086303  x9  26746eb27382bc0d  x10 000000007d8d9810  x11 00000000f0129940
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A      x12 00000000de1fa9f0  x13 0000000000000000  x14 ffffffffffffffff  x15 0000000000000000
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A      x16 00000077446afa08  x17 0000007a54b01b8c  x18 000000770a910000  x19 b4000078d026ca40
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A      x20 b4000078700346f0  x21 0000000000000000  x22 000000770e10d000  x23 b4000078d026ce48
2023-07-13 18:50:28.219 17673-17673 DEBUG                   pid-17673                            A      x24 000000770e10c570  x25 b4000078f000c840  x26 b4000077e0173bb8  x27 b400007830065800
2023-07-13 18:50:28.220 17673-17673 DEBUG                   pid-17673                            A      x28 00000000000003e8  x29 000000770e10c5f0
2023-07-13 18:50:28.220 17673-17673 DEBUG                   pid-17673                            A      lr  00000077445eaaf4  sp  000000770e10c4d0  pc  00000077445eab00  pst 0000000060000000
2023-07-13 18:50:28.240 17673-17673 DEBUG                   pid-17673                            A  backtrace:
2023-07-13 18:50:28.240 17673-17673 DEBUG                   pid-17673                            A        #00 pc 0000000000648b00  /data/app/~~1XEyvBRIOJEgQ3MGzcwacg==/com.enablex.demoenablex-HDOFlaXwsoJscGZKnvXL-A==/base.apk!libjingle_peerconnection_so.so (offset 0x1666000) (BuildId: b70345817a335a7b)
2023-07-13 18:52:29.046 17745-20720 libc                    com.enablex.demoenablex              A  Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x4 in tid 20720 (TaskQueuePacedS), pid 17745 (lex.demoenablex)
2023-07-13 18:52:29.494 21338-21338 DEBUG                   pid-21338                            A  *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
2023-07-13 18:52:29.495 21338-21338 DEBUG                   pid-21338                            A  Build fingerprint: 'motorola/cebu_retailn/cebu:11/RZCS31.Q2-57-12-14/3d8395:user/release-keys'
2023-07-13 18:52:29.495 21338-21338 DEBUG                   pid-21338                            A  Revision: 'pvt'
2023-07-13 18:52:29.495 21338-21338 DEBUG                   pid-21338                            A  ABI: 'arm64'
2023-07-13 18:52:29.511 21338-21338 DEBUG                   pid-21338                            A  Timestamp: 2023-07-13 18:52:29+0530
2023-07-13 18:52:29.511 21338-21338 DEBUG                   pid-21338                            A  pid: 17745, tid: 20720, name: TaskQueuePacedS  >>> com.enablex.demoenablex <<<
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A  uid: 10512
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A  signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x4
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A  Cause: null pointer dereference
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A      x0  b4000078700049f0  x1  0000007732ec2400  x2  0000007732ec2390  x3  0000000000000010
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A      x4  0000000000000000  x5  b4000078e002a11d  x6  9f40215c17c56d58  x7  2fbfbb41ed12b102
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A      x8  0000000000000000  x9  26746eb27382bc0d  x10 00000000d5cd4c81  x11 00000000f00960c0
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A      x12 00000000de1fa9f0  x13 bebca32fbfbb41ed  x14 b4000077e00b2320  x15 0000000000000000
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A      x16 00000077436f3a08  x17 0000007a54b01b8c  x18 0000007727904000  x19 0000007732ec2438
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A      x20 b4000078700049f0  x21 b4000077f0040ed0  x22 0000007732ec2820  x23 00000000000003e8
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A      x24 0000007732ec25a0  x25 0000007732ec3000  x26 0000000000000001  x27 0000000000000000
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A      x28 0000000000000000  x29 0000007732ec2450
2023-07-13 18:52:29.512 21338-21338 DEBUG                   pid-21338                            A      lr  00000077433ce82c  sp  0000007732ec23e0  pc  00000077433ce838  pst 0000000060000000
2023-07-13 18:52:29.526 21338-21338 DEBUG                   pid-21338                            A  backtrace:
2023-07-13 18:52:29.526 21338-21338 DEBUG                   pid-21338                            A        #00 pc 00000000003e8838  /data/app/~~1XEyvBRIOJEgQ3MGzcwacg==/com.enablex.demoenablex-HDOFlaXwsoJscGZKnvXL-A==/base.apk!libjingle_peerconnection_so.so (offset 0x1666000) (BuildId: b70345817a335a7b)
--------- beginning of main

To view this discussion on the web visit https://groups.google.com/d/msgid/discuss-webrtc/546a7f99-6e35-4c7c-a9cf-8b1067d17af1n%40googlegroups.com.

[Muhammad Usman Bashir]

>  (art::Thread::CreateCallback(void*)+1090) (BuildId: f7e5db965fd31b848f7680c3e818a1f6)
2023-07-13 18:45:24.759  9218-9218  DEBUG                   pid-9218                             A        #30 pc 0008170b  /apex/com.android.runtime/lib/bionic/libc.so (__pthread_start(void*)+40) (BuildId: 9d4f6aa585db1e76cb15e0aa4299910e)
2023-07-13 18:45:24.759  9218-9218  DEBUG                   pid-9218                             A        #31 pc 0003a50d  /apex/com.android.runtime/lib/bionic/libc.so (__start_thread+30) (BuildId: 9d4f6aa585db1e76cb15e0aa4299910e)
2023-07-13 18:50:28.073 10880-17585 libc                    com.enablex.demoenablex              A  Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x7d600040086307 in tid 17585 (AudioTrackJavaT), pid 10880 (lex.demoenablex)

It looks like the problem occurs in the "WebRtcAudioTrack" class, which is used to play out audio in WebRTC. This class has a nested class AudioTrackThread that appears to be failing. AudioTrackThread.run method seems to be trying to invoke the static method nativeGetPlayoutData from WebRtcAudioTrack, but this call results in a segmentation fault.

Can you confirm that your application is handling "Network Changes" properly?

In your case, If the network is completely off, your application should be capable of handling it without any crash. You should indeed close the PeerConnection when the network is lost. Not doing so can lead to resource leaks and crashes in your application. Once the network is back online, you can attempt to reconnect to the PSTN call by re-establishing the PeerConnection.

[Pankaj Pandey]

Can you confirm that your application is handling "Network Changes" properly? 

yes handled 

Also it's not every time it's some time .Currently not using reconnect just network off and crashed some times.

To view this discussion on the web visit https://groups.google.com/d/msgid/discuss-webrtc/9ce0b4bd-0b51-4663-8d06-c606b290ad20n%40googlegroups.com.

[Muhammad Usman Bashir]

From the crash logs, it appears that some of audio packets from PSTN side are going to play while AudioTrackThread has been released already. So, I might suggest further inspection of your process of handling "Network Changes & PeerConnection States". 

I also want to inquire couple of things:

1. When you switched off your network, was your connection fully established with PSTN SIP Endpoint, or was the WebRTC connection still in the process of connecting?
2. Can you confirm PeerConnection State at the point when you are closing your network?

[Pankaj Pandey]

1. When you switched off your network, was your connection fully established with PSTN SIP Endpoint, or was the WebRTC connection still in the process of connecting?

After connection established then tried to pstn call

2. Can you confirm PeerConnection State at the point when you are closing your network?

PearConnection Connected state then trying to establish a PSTN call.

To view this discussion on the web visit https://groups.google.com/d/msgid/discuss-webrtc/bde037f6-03cc-420a-887f-fbf179033231n%40googlegroups.com.

[Muhammad Usman Bashir]

> As I mentioned, from the stack trace, it appears that the crash occurred while running the WebRtcAudioTrack's AudioTrackThread.run method. The last method that was executed before the crash in the user's code was org.webrtc.audio.WebRtcAudioTrack.-$$Nest$smnativeGetPlayoutData.

1. Which version of WebRTC are you currently using in your app?
2. Is the crash occurring on specific devices or certain versions of Android?
   
3. It appears that you're not compiling the WebRTC library for Android, correct?
   

I suggest we take the following steps:

1. Disable the audio playout in your current WebRTC setup. You can do this by using the " setEnabled(false) " function on the audio track in your PeerConnection object.
2. Once you've successfully disabled the playout, please attempt to reproduce the crash.

Doing so should hopefully give us clearer insights into whether the audio playout is contributing to the crash.