Remove stream problem

[ArtHsu]

SENDER sends data to RECEIVER by stream.writeData(data), and RECEIVER removes stream by session.removeStream(stream) in onStreamData() after data received. Then here comes a fatal error causing app to crash. It happens with arm-v7 device. Device with arm-v8 has no such problem.
Below is the log:

05-17 15:16:51.066 F/libc (28924): Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 29461 (Thread-9830) 05-17 15:16:51.069 F/DEBUG (16449): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** 05-17 15:16:51.069 F/DEBUG (16449): Build fingerprint: 'htc/htc_asia_tw/htc_eyetuhl:6.0.1/MMB29M/737793.3:user/release-keys' 05-17 15:16:51.069 F/DEBUG (16449): Revision: '0' 05-17 15:16:51.069 F/DEBUG (16449): ABI: 'arm' 05-17 15:16:51.070 F/DEBUG (16449): pid: 28924, tid: 29461, name: Thread-9830 >>> com.test.carriersdk <<< 05-17 15:16:51.070 F/DEBUG (16449): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 05-17 15:16:51.111 F/DEBUG (16449): r0 00000000 r1 6748e24c r2 00008000 r3 6748e24c 05-17 15:16:51.112 F/DEBUG (16449): r4 9c39f4b8 r5 9c39f8a8 r6 9c39f930 r7 00000078 05-17 15:16:51.112 F/DEBUG (16449): r8 9eb03980 r9 b827cd70 sl 9c2a1000 fp 9c39ed40 05-17 15:16:51.113 F/DEBUG (16449): ip 9ec4d66c sp 9c39e3d0 lr 9eb32e84 pc 9eb42ed0 cpsr 600f0010 05-17 15:16:51.115 F/DEBUG (16449): 05-17 15:16:51.115 F/DEBUG (16449): backtrace: 05-17 15:16:51.116 F/DEBUG (16449): #00 pc 0003eed0 /data/app/com.test.carriersdk-2/lib/arm/libcarrierjni.so (pseudo_tcp_socket_is_closed+12)

[ArtHsu]

Any comments?

[stiartsly]

Honestly, we have no clues about what happens for your situation. We will try to make tests as your case to check whether the same issue would happen to us. And would you like to provide more information about your environment as like:

1. What's the android API-level of android phone and brand?
2. The situation in your case (arm-v7 and arm64-v8) all runs on your same phone ?
3. What happen if not to call "removeStream" within onStreamData? still SIGSEGV ?
4. etc.
   Thats would help us a lot to manage to find the bug if possible. Thanks.

[ArtHsu]

1. Samsung Note5 (arm64-v8a/android 7.0/api 24) and HTC Desire Eye (arm-v7a/android 6.0.1/api 23)
2. In our case , we run the same apk on the two different devices as mentioned above.
3. It's no problem if not to call removeStream within onStreamData, so we're sure the issue is related to remove stream as the title said.
4. We think you can find an arm-v7a device to test removeStream function.
   Thanks.

[stiartsly]

As you suggest, we did use Huawei Hisilicon Kirin925 (ARMv7) (with Android 6.0) to run test with routine for calling removeStream within onStreamData, but no such issue ocurred to us. The test we run is made from "SessionNewTest" except for updating to call removeStream within onStreamData handler instead of origin one. And you can try it too. It would be helpful for you to tell us the diff between your running case and my test case if the distinct difference for calling routine exists.