libarcore_c.so null pointer dereference

[waqa1988]

SPECIFIC ISSUE ENCOUNTERED

2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: Cause: null pointer dereference
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: x0 0000000000000000 x1 0000000000000001 x2 0000007d00200000 x3 ffffffffa13b4480
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: x4 00262db766000000 x5 0000007d72cbb512 x6 0000007e68b12000 x7 00000000021e0676
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: x8 0000007d46210c00 x9 00000000000000a0 x10 0000000000000000 x11 fe21891376d535c6
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: x12 0000000000000018 x13 000000005ec5ff4c x14 00392cca21477b8e x15 0000149ce56a88e5
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: x16 0000007d30a9d158 x17 0000007e63c72db4 x18 0000007cf2e88000 x19 0000007d075629b8
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: x20 0000007d463cc9c8 x21 0000007d46210d40 x22 0000000000000002 x23 0000007d02e79d10
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: x24 0000007d02e79ca0 x25 0000007d2f7de444 x26 0000007d07562a60 x27 0000007d07562a80
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: x28 0000007d07562b30 x29 0000000000000000
2020-05-21 12:10:53.363 12916-12916/? A/DEBUG: sp 0000007d07562950 lr 0000007d3075080c pc 0000007d30750820
2020-05-21 12:10:53.363 949-29965/? E/CHIUSECASE: [OP_EXT] OP_CAMERA FRAME FPS 28.3, frame count 60, time 2.1, Max:30, expect fps:30.0 fps
2020-05-21 12:10:53.364 12916-12916/? A/DEBUG: backtrace:
2020-05-21 12:10:53.364 12916-12916/? A/DEBUG: #00 pc 000000000188f820 /data/app/com.google.ar.core-M8OGHXJfkmkQL_rYO3qBEg==/lib/arm64/libarcore_c.so (BuildId: 175ffad17680ec826eb04dd236251ce2)
2020-05-21 12:10:53.364 12916-12916/? A/DEBUG: #1 pc 000000000091b6a0 /data/app/com.google.ar.core-M8OGHXJfkmkQL_rYO3qBEg==/lib/arm64/libarcore_c.so (BuildId: 175ffad17680ec826eb04dd236251ce2)
2020-05-21 12:10:53.364 12916-12916/? A/DEBUG: #2 pc 000000000091c800 /data/app/com.google.ar.core-M8OGHXJfkmkQL_rYO3qBEg==/lib/arm64/libarcore_c.so (BuildId: 175ffad17680ec826eb04dd236251ce2)
2020-05-21 12:10:53.364 12916-12916/? A/DEBUG: #3 pc 000000000198f160 /data/app/com.google.ar.core-M8OGHXJfkmkQL_rYO3qBEg==/lib/arm64/libarcore_c.so (BuildId: 175ffad17680ec826eb04dd236251ce2)
2020-05-21 12:10:53.364 12916-12916/? A/DEBUG: #4 pc 00000000000d9700 /apex/com.android.runtime/lib64/bionic/libc.so (__pthread_start(void*)+36) (BuildId: e65b038ae18baeef286ebf411dd49cd6)
2020-05-21 12:10:53.364 12916-12916/? A/DEBUG: #5 pc 0000000000075eac /apex/com.android.runtime/lib64/bionic/libc.so (__start_thread+64) (BuildId: e65b038ae18baeef286ebf411dd49cd6)

VERSIONS USED

• Android Studio: 3.3.2
• ARCore SDK for Android: Android: 1.14.0
• OPPO/PDEM10, android OS 10
• ARCore: 1.16.200302046
• OPPO/PDEM10/OP4A77:10/QKQ1.191222.002/1586751024:user/release-keys

STEPS TO REPRODUCE THE ISSUE

1. click a button to AR Activity and open AR session and get hit results by using frame.hitTest when TrackingState.TRACKING is ok
2. then finish AR Activity and go back to main page which only has a button to navigate to AR Activity
3. repeat above procedures several times you'll get that crash

[devbridie]

A fix went out for this in 1.17. Please try updating to the newest version and let me know if you still see the behavior. Thanks!