Open lvi166 opened 5 years ago
You'd better re-compile the 4 libs using NDK-r14b. And paste the accurate error information.
You'd better re-compile the 4 libs using NDK-r14b. And paste the accurate error information.
Thank you for your interest in this issue.
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I located the error,
#02 pc 0000cb60 /data/app/com.serenegiant.usbcameratest0-8VPrewEQvandQeDyVH6p6g==/lib/arm/libusb100.so (libusb_handle_events_timeout_completed+968)
Specific error message
E:\development_tools\android\android-ndk-r14b\toolchains\arm-linux-androideabi-4
.9\prebuilt\windows-x86_64\bin>arm-linux-androideabi-addr2line -f -e E:\sdk\UVC
Camera\libuvccamera\src\main\obj\local\armeabi\libusb100.so 0000cb60
libusb_hotplug_register_callback
E:\sdk\UVCCamera\libuvccamera\src\main/jni/libusb/android/jni/../../libusb/hotpl
ug.c:251
You'd better re-compile the 4 libs using NDK-r14b. And paste the accurate error information.
********** Crash dump: ********** Build fingerprint: 'HUAWEI/LYA-AL00/HWLYA:9/HUAWEILYA-AL00/195C00R1:user/release -keys' pid: 2660, tid: 2807, name: BaseActivity >>> com.serenegiant.usbcameratest <<< signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #00 pc 00011c34 /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libusb100.s o: Routine op_reset_device at E:\sdk\UVCCamera\libuvccamera\src\main/jni/libusb/ android/jni/../../libusb/os/android_usbfs.c:1866 (discriminator 1) Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #01 pc 0000d200 /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libusb100.s o: Routine list_del at E:\sdk\UVCCamera\libuvccamera\src\main/jni/libusb/android /jni/../../libusb/libusbi.h:129 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #02 pc 0000cb60 /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libusb100.s o (libusb_handle_events_timeout_completed+968): Routine libusb_hotplug_register_ callback at E:\sdk\UVCCamera\libuvccamera\src\main/jni/libusb/android/jni/../../ libusb/hotplug.c:249 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #03 pc 0000d3cc /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libusb100.s o (libusb_handle_events+52): Routine calculate_timeout at E:\sdk\UVCCamera\libuv ccamera\src\main/jni/libusb/android/jni/../../libusb/io.c:1218 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #04 pc 00012c20 /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libuvc.so ( _uvc_handle_events+136): Routine uvc_mjpeg2bgr at E:\sdk\UVCCamera\libuvccamera\ src\main/jni/libuvc/android/jni/../../src/frame-mjpeg.c:298 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #05 pc 00065413 /sys tem/lib/libc.so (__pthread_start(void*)+22) Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #06 pc 0001e819 /sys tem/lib/libc.so (__start_thread+32)
You'd better re-compile the 4 libs using NDK-r14b. And paste the accurate error information.
********** Crash dump: ********** Build fingerprint: 'HUAWEI/LYA-AL00/HWLYA:9/HUAWEILYA-AL00/195C00R1:user/release -keys' pid: 2660, tid: 2807, name: BaseActivity >>> com.serenegiant.usbcameratest <<< signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #00 pc 00011c34 /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libusb100.s o: Routine op_reset_device at E:\sdk\UVCCamera\libuvccamera\src\main/jni/libusb/ android/jni/../../libusb/os/android_usbfs.c:1866 (discriminator 1) Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #01 pc 0000d200 /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libusb100.s o: Routine list_del at E:\sdk\UVCCamera\libuvccamera\src\main/jni/libusb/android /jni/../../libusb/libusbi.h:129 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #02 pc 0000cb60 /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libusb100.s o (libusb_handle_events_timeout_completed+968): Routine libusb_hotplug_register_ callback at E:\sdk\UVCCamera\libuvccamera\src\main/jni/libusb/android/jni/../../ libusb/hotplug.c:249 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #03 pc 0000d3cc /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libusb100.s o (libusb_handle_events+52): Routine calculate_timeout at E:\sdk\UVCCamera\libuv ccamera\src\main/jni/libusb/android/jni/../../libusb/io.c:1218 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #04 pc 00012c20 /dat a/app/com.serenegiant.usbcameratest-lDYAayQNCO1MnD5AkwLPnA==/lib/arm/libuvc.so ( _uvc_handle_events+136): Routine uvc_mjpeg2bgr at E:\sdk\UVCCamera\libuvccamera\ src\main/jni/libuvc/android/jni/../../src/frame-mjpeg.c:298 Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #05 pc 00065413 /sys tem/lib/libc.so (__pthread_start(void*)+22) Stack frame 02-27 14:56:17.854 2822 2822 F DEBUG : #06 pc 0001e819 /sys tem/lib/libc.so (__start_thread+32)
is a new problem?
I have exactly the same crash on device detach using Android 9.0 on Samsung Galaxy S9 and One Plus 6
I/crash_dump64: obtaining output fd from tombstoned, type: kDebuggerdTombstone
I//system/bin/tombstoned: received crash request for pid 3378
I/crash_dump64: performing dump of process 3295 (target tid = 3378)
*** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
Build fingerprint: 'samsung/star2lteser/star2lte:9/PPR1.180610.011/G965FPUU2CSA2:user/release-keys'
Revision: '26'
ABI: 'arm64'
pid: 3295, tid: 3378, name: Thread-13 >>> com.example <<<
signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr --------
Abort message: 'FORTIFY: pthread_mutex_lock called on a destroyed mutex (0x6fadd4aab4)'
x0 0000000000000000 x1 0000000000000d32 x2 0000000000000006 x3 0000000000000008
x4 0000000000008080 x5 0000000000008080 x6 0000000000008080 x7 0000000000000038
x8 0000000000000083 x9 000000704767b890 x10 fffffff87ffffbdf x11 0000000000000001
x12 0000000000000030 x13 000000005c6ab0db x14 002f4236c518a708 x15 0000487955d7bee6
x16 00000070476b22b0 x17 00000070475f1958 x18 0000000000000000 x19 0000000000000cdf
x20 0000000000000d32 x21 0000000000000083 x22 0000000000000004 x23 0000000000000003
x24 0000006fbe926f40 x25 000000000000005c x26 0000000000000002 x27 0000006fadd51100
x28 0000006faa1bcdf0 x29 0000006fa7fff090
sp 0000006fa7fff050 lr 00000070475e4da0 pc 00000070475e4dcc
backtrace:
#00 pc 0000000000021dcc /system/lib64/libc.so (abort+124)
#01 pc 0000000000086508 /system/lib64/libc.so (__fortify_fatal(char const*, ...)+120)
#02 pc 0000000000085bb4 /system/lib64/libc.so (HandleUsingDestroyedMutex(pthread_mutex_t*, char const*)+52)
#03 pc 0000000000085a60 /system/lib64/libc.so (pthread_mutex_lock+256)
#04 pc 000000000000fa68 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so
#05 pc 000000000000f970 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so
#06 pc 000000000000dd68 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so
#07 pc 000000000000abe4 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so
#08 pc 000000000000a818 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so (libusb_handle_events_timeout_completed+244)
#09 pc 000000000000ad54 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so (libusb_handle_events+44)
#10 pc 0000000000011854 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libuvc.so (_uvc_handle_events+136)
#11 pc 0000000000084df8 /system/lib64/libc.so (__pthread_start(void*)+208)
#12 pc 0000000000023ac4 /system/lib64/libc.so (__start_thread+68)
Is there any other information that could be helpful in resolving this issue?
I have exactly the same crash on device detach using Android 9.0 on Samsung Galaxy S9 and One Plus 6
I/crash_dump64: obtaining output fd from tombstoned, type: kDebuggerdTombstone I//system/bin/tombstoned: received crash request for pid 3378 I/crash_dump64: performing dump of process 3295 (target tid = 3378) *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** Build fingerprint: 'samsung/star2lteser/star2lte:9/PPR1.180610.011/G965FPUU2CSA2:user/release-keys' Revision: '26' ABI: 'arm64' pid: 3295, tid: 3378, name: Thread-13 >>> com.example <<< signal 6 (SIGABRT), code -6 (SI_TKILL), fault addr -------- Abort message: 'FORTIFY: pthread_mutex_lock called on a destroyed mutex (0x6fadd4aab4)' x0 0000000000000000 x1 0000000000000d32 x2 0000000000000006 x3 0000000000000008 x4 0000000000008080 x5 0000000000008080 x6 0000000000008080 x7 0000000000000038 x8 0000000000000083 x9 000000704767b890 x10 fffffff87ffffbdf x11 0000000000000001 x12 0000000000000030 x13 000000005c6ab0db x14 002f4236c518a708 x15 0000487955d7bee6 x16 00000070476b22b0 x17 00000070475f1958 x18 0000000000000000 x19 0000000000000cdf x20 0000000000000d32 x21 0000000000000083 x22 0000000000000004 x23 0000000000000003 x24 0000006fbe926f40 x25 000000000000005c x26 0000000000000002 x27 0000006fadd51100 x28 0000006faa1bcdf0 x29 0000006fa7fff090 sp 0000006fa7fff050 lr 00000070475e4da0 pc 00000070475e4dcc backtrace: #00 pc 0000000000021dcc /system/lib64/libc.so (abort+124) #01 pc 0000000000086508 /system/lib64/libc.so (__fortify_fatal(char const*, ...)+120) #02 pc 0000000000085bb4 /system/lib64/libc.so (HandleUsingDestroyedMutex(pthread_mutex_t*, char const*)+52) #03 pc 0000000000085a60 /system/lib64/libc.so (pthread_mutex_lock+256) #04 pc 000000000000fa68 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so #05 pc 000000000000f970 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so #06 pc 000000000000dd68 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so #07 pc 000000000000abe4 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so #08 pc 000000000000a818 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so (libusb_handle_events_timeout_completed+244) #09 pc 000000000000ad54 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so (libusb_handle_events+44) #10 pc 0000000000011854 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libuvc.so (_uvc_handle_events+136) #11 pc 0000000000084df8 /system/lib64/libc.so (__pthread_start(void*)+208) #12 pc 0000000000023ac4 /system/lib64/libc.so (__start_thread+68)
Is there any other information that could be helpful in resolving this issue?
you can use the ndk-stack to locatate the the accurate error information.
ndk-stack
gives me not much more information than I posted above. And I can't figure out how could I get complete information about lines 4-7 in stack trace. I tried building with NDK r14b and 19.0.5232133, tried APP_OPTIM := debug
and LOCAL_CFLAGS := -g
but had no luck.
I hava the same problem,is there anybody solved the problem?
I hava the same problem with Huawei Honor 6X and 7X ,It is hard to find the root cause.
I have the same problem when camera device is detached with Huawei mate 10
I randomly stumbled upon this thread a few days ago, while investigating a similar crashlog, and figured I might as well post my findings
I believe these crashes are related to a change done by google in Bionic, for Android 9: https://android.googlesource.com/platform/bionic/+/9e989f12d1186231d97dac6d038db7955acebdf3%5E%21
To be precise, this is the commit that introduced the HandleUsingDestroyedMutex method, which is present in all of the stacktraces that have been posted here:
static int __attribute__((noinline)) HandleUsingDestroyedMutex(pthread_mutex_t* mutex,
const char* function_name) {
if (bionic_get_application_target_sdk_version() >= __ANDROID_API_P__) {
__fortify_fatal("%s called on a destroyed mutex (%p)", function_name, mutex);
}
return EBUSY;
}
Also, this statement was added inside the pthread_mutex_lock (also present in all the stacktraces):
if (__predict_false(IsMutexDestroyed(old_state))) {
return HandleUsingDestroyedMutex(mutex_interface, __FUNCTION__);
}
So by the looks of it, something inside the libusb100.so library is calling pthread_mutex_lock on an already destroyed mutex, which results in a hard crash only on Android 9.
I randomly stumbled upon this thread a few days ago, while investigating a similar crashlog, and figured I might as well post my findings
I believe these crashes are related to a change done by google in Bionic, for Android 9: https://android.googlesource.com/platform/bionic/+/9e989f12d1186231d97dac6d038db7955acebdf3%5E%21
To be precise, this is the commit that introduced the HandleUsingDestroyedMutex method, which is present in all of the stacktraces that have been posted here:
static int __attribute__((noinline)) HandleUsingDestroyedMutex(pthread_mutex_t* mutex, const char* function_name) { if (bionic_get_application_target_sdk_version() >= __ANDROID_API_P__) { __fortify_fatal("%s called on a destroyed mutex (%p)", function_name, mutex); } return EBUSY; }
Also, this statement was added inside the pthread_mutex_lock (also present in all the stacktraces):
if (__predict_false(IsMutexDestroyed(old_state))) { return HandleUsingDestroyedMutex(mutex_interface, __FUNCTION__); }
So by the looks of it, something inside the libusb100.so library is calling pthread_mutex_lock on an already destroyed mutex, which results in a hard crash only on Android 9.
Boy, I don't think libusb100 will result this, and what you pasted seemed like a low level error that is not expected to happen. My Sumsang N950 with Android 9.0 works well.
I'm just pointing out what the stacktrace is saying :)
#00 pc 0000000000021dcc /system/lib64/libc.so (abort+124)
#01 pc 0000000000086508 /system/lib64/libc.so (__fortify_fatal(char const*, ...)+120)
#02 pc 0000000000085bb4 /system/lib64/libc.so (HandleUsingDestroyedMutex(pthread_mutex_t*, char const*)+52)
#03 pc 0000000000085a60 /system/lib64/libc.so (pthread_mutex_lock+256)
#04 pc 000000000000fa68 /data/app/com.example-nig2tYAMAzRejsDuxIP7KA==/lib/arm64/libusb100.so
The exception is triggered in libusb100.so (line #04) and then you can follow the trace through the native methods that I explained above, which google introduced in android 9.
As a side note, some of the devs maintaining some custom ROMs (DotOS, ArrowOS, LineageOS, and a few others) have reverted the changes google did in the commit I linked, precisely because they spotted the potential issues with it. So I wouldn't expect this crash to occur on them.
Hi ! I had the same issue as you all here, but was sensors related ... so basically if you use older blobs on Android Pie, you souldn't build the service related to your blobs ( in my case was : android.hardware.sensors@1.0-service ) ... you need to keep only implementation interface ( in my case was : android.hardware.sensors@1.0-impl ) ... and on manifest.xml you need to change the hwbinder transport ( hwbinder ) with passthrough ( arch="32+64">passthrough ) !
Logically, now if your issue is camera related, you should remove android.hardware.camera.provider@2.4-service from device.mk and change on manifest.xml ( hwbinder) with ( arch="32+64">passthrough) for (android.hardware.camera.provider) !
@Huawei-Dev @AndreiStanciu89 Were you guys able to resolve this pthread_mutex_lock issue at a certain point?
D/InputTransport(16535): Input channel constructed: 'b4f35ac', fd=140 I/ViewRootImpl@ce67b10ProductView: setView = com.android.internal.policy.DecorView@22f6038 TM=true V/ViewRootImpl@61afd99ProductView: updateAppliedLetterboxDirection, direction=0, Caller=android.view.ViewRootImpl.handleDispatchLetterboxDirectionChanged:12053 F/libc (16535): Fatal signal 6 (SIGABRT), code -1 (SI_QUEUE) in tid 24732 (CameraThread), pid 16535 (enesis.fieldapp)
Build fingerprint: 'samsung/a71nsxx/a71:11/RP1A.200720.012/A715FXXU6BUH1:user/release-keys' Revision: '6' ABI: 'arm64' Timestamp: 2021-08-31 21:12:02+0530 pid: 16535, tid: 24732, name: CameraThread >>> package name <<< uid: 10537 signal 6 (SIGABRT), code -1 (SI_QUEUE), fault addr -------- Abort message: 'FORTIFY: pthread_mutex_lock called on a destroyed mutex (0x71a24f5fe4)' x0 0000000000000000 x1 000000000000609c x2 0000000000000006 x3 00000070381eb830 x4 0000000000008080 x5 0000000000008080 x6 0000000000008080 x7 0000000000000038 x8 00000000000000f0 x9 0a8c7ce8e43c1cab x10 0000000000000000 x11 ffffffc0fffffbdf x12 0000000000000001 x13 00000000612e4dc9 x14 002f684aefd4e4aa x15 000099278f69afbd x16 0000007356046c80 x17 0000007356026600 x18 000000700f57e000 x19 0000000000004097 x20 000000000000609c x21 00000000ffffffff x22 0000000000000000 x23 0000007112498b68 x24 000000715246d910 x25 0000000000000004 x26 0000000000000002 x27 000000712245e760 x28 0000000000000003 x29 00000070381eb8b0 lr 0000007355fd6038 sp 00000070381eb810 pc 0000007355fd6064 pst 0000000000000000 backtrace:
#01 pc 00000000000b7c20 /apex/com.android.runtime/lib64/bionic/libc.so (__fortify_fatal(char const*, ...)+124) (BuildId: c5ebfbffe15ece8c13ef9afa88b800fb)
#02 pc 00000000000b70bc /apex/com.android.runtime/lib64/bionic/libc.so (HandleUsingDestroyedMutex(pthread_mutex_t*, char const*)+52) (BuildId: c5ebfbffe15ece8c13ef9afa88b800fb)
#03 pc 00000000000b6f70 /apex/com.android.runtime/lib64/bionic/libc.so (pthread_mutex_lock+276) (BuildId: c5ebfbffe15ece8c13ef9afa88b800fb)
#04 pc 0000000000010208 /data/app/~~YBWfL9ZhjqaNvg-uxgf1aA==/com.genesis.fieldapp-i4qAQ37_g7VON5yCb5GpfA==/base.apk!libusb100.so (offset 0x42d5000) (BuildId: d3d320d24e295f7658d8c85a9c614c0626b535cd)
#05 pc 000000000000c28c /data/app/~~YBWfL9ZhjqaNvg-uxgf1aA==/com.genesis.fieldapp-i4qAQ37_g7VON5yCb5GpfA==/base.apk!libusb100.so (offset 0x42d5000) (BuildId: d3d320d24e295f7658d8c85a9c614c0626b535cd)
#06 pc 000000000000bcf4 /data/app/~~YBWfL9ZhjqaNvg-uxgf1aA==/com.genesis.fieldapp-i4qAQ37_g7VON5yCb5GpfA==/base.apk!libusb100.so (offset 0x42d5000) (libusb_handle_events_timeout_completed+748) (BuildId: d3d320d24e295f7658d8c85a9c614c0626b535cd)
#07 pc 000000000000c414 /data/app/~~YBWfL9ZhjqaNvg-uxgf1aA==/com.genesis.fieldapp-i4qAQ37_g7VON5yCb5GpfA==/base.apk!libusb100.so (offset 0x42d5000) (libusb_handle_events+44) (BuildId: d3d320d24e295f7658d8c85a9c614c0626b535cd)
#08 pc 0000000000011e24 /data/app/~~YBWfL9ZhjqaNvg-uxgf1aA==/com.genesis.fieldapp-i4qAQ37_g7VON5yCb5GpfA==/base.apk!libuvc.so (offset 0x7bcc000) (_uvc_handle_events+132) (BuildId: bbd55feb65914680ce546556f4819427a6cc0cfd)
#09 pc 00000000000b6374 /apex/com.android.runtime/lib64/bionic/libc.so (__pthread_start(void*)+64) (BuildId: c5ebfbffe15ece8c13ef9afa88b800fb)
#10 pc 0000000000050fa4 /apex/com.android.runtime/lib64/bionic/libc.so (__start_thread+64) (BuildId: c5ebfbffe15ece8c13ef9afa88b800fb)
Has the problem been solved
I found this issue happend when I disconnect device which is previewing。 I found that in libusb_free_transfer , comment out //usbi_mutex_destroy(&itransfer->lock); will solve this issue
I found this issue happend when I disconnect device which is previewing。 I found that in libusb_free_transfer , comment out //usbi_mutex_destroy(&itransfer->lock); will solve this issue
Please specify file path with line number
I found this issue happend when I disconnect device which is previewing。 I found that in libusb_free_transfer , comment out //usbi_mutex_destroy(&itransfer->lock); will solve this issue
Could u please share the detail solution? thx
In case anyone else is looking for a solution to this problem, I think I've found one.
In the file io.c
,
in the function libusb_free_transfer
,
above usbi_mutex_destroy(&itransfer->lock);
on line 1367 add this code:
usbi_mutex_lock(&itransfer->lock);
This will lock the mutex before destroying it, so that the code in android_usbfs.c
in the function handle_iso_completion
doesn't try to lock the destroyed mutex (that's where my code was erroring out)
你的意思是注销掉这个锁就可以啦,多了一个 destroy
添加一个锁对称
I have the same crash specific to Huawei and Honor devices in Flutter,
[HONOR HWLLD-H (Honor 9 Lite)] [Android 9 (SDK 28)]
PlayStore gives this crash log,
Thread: FORTIFY: pthread_mutex_lock called on a destroyed mutex (0x
pid: 0, tid: 24203 >>> com.appName <<< backtrace:
when i Unplug the usb camera and this error will occur. phone: HUAWEI Mata20 pro OS: Android 9.0
2019-02-16 13:34:45.354 28617-28617/? A/DEBUG: pid: 28239, tid: 28601, name: USBMonitor >>> com.serenegiant.usbcameratest <<< 2019-02-16 13:34:45.355 28617-28617/? A/DEBUG: #00 pc 00011c34 /data/app/com.serenegiant.usbcameratest-oC158m_o_EgCmU7x2N086A==/lib/arm/libusb100.so 2019-02-16 13:34:45.355 28617-28617/? A/DEBUG: #01 pc 0000d200 /data/app/com.serenegiant.usbcameratest-oC158m_o_EgCmU7x2N086A==/lib/arm/libusb100.so 2019-02-16 13:34:45.355 28617-28617/? A/DEBUG: #02 pc 0000cb60 /data/app/com.serenegiant.usbcameratest-oC158m_o_EgCmU7x2N086A==/lib/arm/libusb100.so (libusb_handle_events_timeout_completed+968) 2019-02-16 13:34:45.355 28617-28617/? A/DEBUG: #03 pc 0000d3cc /data/app/com.serenegiant.usbcameratest-oC158m_o_EgCmU7x2N086A==/lib/arm/libusb100.so (libusb_handle_events+52) 2019-02-16 13:34:45.355 28617-28617/? A/DEBUG: #04 pc 00012c20 /data/app/com.serenegiant.usbcameratest-oC158m_o_EgCmU7x2N086A==/lib/arm/libuvc.so (_uvc_handle_events+136)
Can anyone tell me how to solve this problem? thanks