error log | 日志或报错信息 | ログ

Android端日志：

--------- beginning of crash
10-12 19:11:42.535 20690 20745 F libc    : Fatal signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 in tid 20745 (.paxlprtestdemo), pid 20690 (.paxlprtestdemo)
10-12 19:11:42.573 21112 21112 I crash_dump64: obtaining output fd from tombstoned, type: kDebuggerdTombstone
10-12 19:11:42.574   884   884 I /system/bin/tombstoned: received crash request for pid 20745
10-12 19:11:42.577 21112 21112 I crash_dump64: performing dump of process 20690 (target tid = 20745)
10-12 19:11:42.593 21112 21112 F DEBUG   :************************************************
10-12 19:11:42.593 21112 21112 F DEBUG   : Build fingerprint: 'Redmi/cannon/cannon:10/QP1A.190711.020/V12.0.9.0.QJECNXM:user/release-keys'
10-12 19:11:42.593 21112 21112 F DEBUG   : Revision: '0'
10-12 19:11:42.594 21112 21112 F DEBUG   : ABI: 'arm64'
10-12 19:11:42.594 21112 21112 F DEBUG   : Timestamp: 2022-10-12 19:11:42+0800
10-12 19:11:42.594 21112 21112 F DEBUG   : pid: 20690, tid: 20745, name: .appname >>> {package_name} <<<
10-12 19:11:42.594 21112 21112 F DEBUG   : uid: 10303
10-12 19:11:42.594 21112 21112 F DEBUG   : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0
10-12 19:11:42.594 21112 21112 F DEBUG   : Cause: null pointer dereference
10-12 19:11:42.594 21112 21112 F DEBUG   :     x0  0000000000000000  x1  000000745c67a5c4  x2  0000000000000000  x3  000000745c67a5c0
10-12 19:11:42.594 21112 21112 F DEBUG   :     x4  0000000000000000  x5  0000000000000000  x6  0000000000000000  x7  0000000000000004
10-12 19:11:42.594 21112 21112 F DEBUG   :     x8  0000000000000002  x9  0000007fe6db1e80  x10 0000007fe6db1e7c  x11 0000000000000002
10-12 19:11:42.594 21112 21112 F DEBUG   :     x12 00000074782d3a70  x13 0000007476458ec0  x14 00000074782d3a70  x15 0000007476458ed0
10-12 19:11:42.594 21112 21112 F DEBUG   :     x16 0000000000000000  x17 0000000000000006  x18 000000747715e000  x19 00000074ca013960
10-12 19:11:42.594 21112 21112 F DEBUG   :     x20 0000007fe6db1e28  x21 0000007fe6db1e84  x22 0000007fe6db1e70  x23 0000007fe6db2210
10-12 19:11:42.594 21112 21112 F DEBUG   :     x24 00000074782d3b4c  x25 0000000000000001  x26 00000074782d4018  x27 0000000000000002
10-12 19:11:42.594 21112 21112 F DEBUG   :     x28 0000000000000101  x29 00000074782d3af0
10-12 19:11:42.594 21112 21112 F DEBUG   :     sp  00000074782d3a50  lr  0000007478394274  pc  00000074783945ac
10-12 19:11:42.595 21112 21112 F DEBUG   : 
10-12 19:11:42.595 21112 21112 F DEBUG   : backtrace:
10-12 19:11:42.595 21112 21112 F DEBUG   :       #00 pc 00000000000bc5ac  /data/app/{package_name}-IZIYNaHV26eg_z5L-wUSHA==/lib/arm64/libncnn.so (BuildId: 2c820bb6ba465abeafeec8e40dbba82a5a0f85d0)
10-12 19:11:42.595 21112 21112 F DEBUG   :       #01 pc 00000000003ef158  /data/app/{package_name}-IZIYNaHV26eg_z5L-wUSHA==/lib/arm64/libncnn.so (__kmp_invoke_microtask+152) (BuildId: 2c820bb6ba465abeafeec8e40dbba82a5a0f85d0)

根据crash日志提到的寄存器地址，通过NDK编译器进一步解析得到如下信息：

.omp_outlined..34
__kmp_invoke_microtask

context | 编译/运行环境 | バックグラウンド

Device：Redmi Note 9
OS：Android 10
CPU：联发科天玑800U
RAM：6GB
ncnn commit id：902954d73755afaf969815c3fe4c857e0dadd658
ANDROID_NDK：android-ndk-r21e

how to reproduce | 复现步骤 | 再現方法

1.下载最新ncnn库
2.编译Android版本库

cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -DANDROID_ABI="armeabi-v7a" -DANDROID_ARM_NEON=ON -DANDROID_PLATFORM=android-16 ..
make -j8
make install

cmake -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK/build/cmake/android.toolchain.cmake -DANDROID_ABI="arm64-v8a" -DANDROID_PLATFORM=android-21 ..
make -j8
make install

3.将编译好的libncnn.so库加入Android推理应用工程中
4.编译运行应用
5.在代码运行到执行推理时应用崩溃

LOGI("---------- dbNet getTextBoxes from_pixels ----------");
    ncnn::Mat input = ncnn::Mat::from_pixels(inputMat.data, ncnn::Mat::PIXEL_RGBA2BGR, inputMat.cols, inputMat.rows);
    LOGI("---------- dbNet getTextBoxes create_extractor ----------");
    ncnn::Extractor extractor = net->create_extractor();
    LOGI("---------- dbNet getTextBoxes substract_mean_normalize ----------");
    input.substract_mean_normalize(meanValues, normValues);
    LOGI("---------- dbNet getTextBoxes input ----------");
    extractor.input("x", input);
    ncnn::Mat out;
    LOGI("---------- dbNet getTextBoxes extract ----------");
    extractor.extract("sigmoid_0.tmp_0", out);  //这一步执行时应用崩溃

more | 其他 | その他

问题ncnn模型详见附件
bug_model.zip

经测试，已发现多台不同品牌CPU型号的设备出现这样的问题，均打印出类似的日志信息，并指向libncnn.so
出现崩溃的设备cpu还有：展锐SC9863A和高通骁龙Snapdragon 855 Plus
能正常运行的设备有：展锐SC9832E、高通MSM8917、高通MSM8953、KylinKirin970

麻烦帮忙分析一下是什么问题，不胜感激！