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Compositor layers causing crash on Focus 3 intermittently when enabled/disabled quickly


GCoop
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We're experiencing crashes intermittently when using compositor layers. This reproduces in Unity 2020.3.18f1, 2019.4.30f1, and 2019.3.6f1 with Wave XR plugin 4.1.1-r.3.1/4.1.1-r.3.2, and Universal Render Pipeline 10.6.0

I don't believe this is a memory leak as it can happen the first time a compositor layer is enabled/disabled quickly. The crash stacktraces look like this:

10-04 17:48:46.798 31119 31236 E CRASH   : Version '2020.3.18f1 (a7d1c678663c)', Build type 'Release', Scripting Backend 'il2cpp', CPU 'arm64-v8a'
10-04 17:48:46.798 31119 31236 E CRASH   : Build fingerprint: 'HTC/kona/kona:10/QKQ1.210319.001/2733:user/release-keys'
10-04 17:48:46.798 31119 31236 E CRASH   : Revision: '0'
10-04 17:48:46.798 31119 31236 E CRASH   : ABI: 'arm64'
10-04 17:48:46.798 31119 31236 E CRASH   : Timestamp: 2021-10-04 17:48:46-0600
10-04 17:48:46.798 31119 31236 E CRASH   : pid: 31119, tid: 31236, name: WaveWarp  >>> com.redacted <<<
10-04 17:48:46.798 31119 31236 E CRASH   : uid: 10148
10-04 17:48:46.798 31119 31236 E CRASH   : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
10-04 17:48:46.798 31119 31236 E CRASH   : Cause: null pointer dereference
10-04 17:48:46.798 31119 31236 E CRASH   :     x0  0000007c5baba4c0  x1  0000000000000040  x2  0000000000000050  x3  0000000000000060
10-04 17:48:46.798 31119 31236 E CRASH   :     x4  000000000000000f  x5  00000000000084c1  x6  000000000000000f  x7  0000007ae1d76000
10-04 17:48:46.798 31119 31236 E CRASH   :     x8  0000007ae20a8c78  x9  0000000000000000  x10 0000000000000018  x11 0000007b312a8750
10-04 17:48:46.798 31119 31236 E CRASH   :     x12 0000000000000018  x13 0000000000000010  x14 0000000000000010  x15 0000000000000010
10-04 17:48:46.798 31119 31236 E CRASH   :     x16 0000000000000020  x17 0000000000000030  x18 0000000000000000  x19 0000007b312acd50
10-04 17:48:46.798 31119 31236 E CRASH   :     x20 0000007d478c187c  x21 0000007b312acd50  x22 0000007b312ad060  x23 0000007b312acdd8
10-04 17:48:46.798 31119 31236 E CRASH   :     x24 0000007b312acd50  x25 0000007b312acd50  x26 0000007b312ad020  x27 0000007b5e5ce020
10-04 17:48:46.798 31119 31236 E CRASH   :     x28 0000007b312a9fd1  x29 0000007b312a9bd0
10-04 17:48:46.798 31119 31236 E CRASH   :     sp  0000007b312a7d20  lr  0000007c5a1090c8  pc  0000007c5a109114
10-04 17:48:46.798 31119 31236 E CRASH   :
10-04 17:48:46.798 31119 31236 E CRASH   : backtrace:
10-04 17:48:46.798 31119 31236 E CRASH   :       #00 pc 00000000003c3114  /data/data/com.redacted/code_cache/wavevr/client/lib/libwvr_runtime.so (BuildId: 2ce42121fd8cd6f5b6ef878d0822111bcac6b85c)
10-04 17:48:46.798 31119 31236 E CRASH   :       #01 pc 0000000000361a24  /data/data/com.redacted/code_cache/wavevr/client/lib/libwvr_runtime.so (BuildId: 2ce42121fd8cd6f5b6ef878d0822111bcac6b85c)
10-04 17:48:46.798 31119 31236 E CRASH   :       #02 pc 000000000035e99c  /data/data/com.redacted/code_cache/wavevr/client/lib/libwvr_runtime.so (BuildId: 2ce42121fd8cd6f5b6ef878d0822111bcac6b85c)
10-04 17:48:46.798 31119 31236 E CRASH   :       #03 pc 00000000003f60c0  /data/data/com.redacted/code_cache/wavevr/client/lib/libwvr_runtime.so (BuildId: 2ce42121fd8cd6f5b6ef878d0822111bcac6b85c)
10-04 17:48:46.798 31119 31236 E CRASH   :       #04 pc 00000000003fcedc  /data/data/com.redacted/code_cache/wavevr/client/lib/libwvr_runtime.so (BuildId: 2ce42121fd8cd6f5b6ef878d0822111bcac6b85c)
10-04 17:48:46.798 31119 31236 E CRASH   :       #05 pc 00000000004780a0  /data/data/com.redacted/code_cache/wavevr/client/lib/libwvr_runtime.so (BuildId: 2ce42121fd8cd6f5b6ef878d0822111bcac6b85c)
10-04 17:48:46.798 31119 31236 E CRASH   :       #06 pc 00000000003f0164  /data/data/com.redacted/code_cache/wavevr/client/lib/libwvr_runtime.so (BuildId: 2ce42121fd8cd6f5b6ef878d0822111bcac6b85c)
10-04 17:48:46.798 31119 31236 E CRASH   :       #07 pc 00000000003ee8d8  /data/data/com.redacted/code_cache/wavevr/client/lib/libwvr_runtime.so (BuildId: 2ce42121fd8cd6f5b6ef878d0822111bcac6b85c)
10-04 17:48:46.798 31119 31236 E CRASH   :       #08 pc 00000000000e68a0  /apex/com.android.runtime/lib64/bionic/libc.so (__pthread_start(void*)+36) (BuildId: 21847aa9757f000b0461310a9f5e6e51)

Please let me know if you have any solutions, or if you need any additional information.

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