ndk-stack: Unable to open symbol file .../../libutil.so. Error (9): Bad file descriptor

Question

I'm trying to use the ndk-stack utility to get some help during the debug of my app which is using native libraries. The problem is that all I get using the utility is this:

*** Crash dump: *** Build fingerprint: 'tmobile/htc_vision/vision:2.3.4/GRJ22/82286:user/ release-keys' pid: 15769, tid: 15794 >>> us.ihmc.aci.dsproapp <<< signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 00000024 Stack frame #00 pc 00063710 /data/data/us.ihmc.aci.dsproapp/lib/ libutil.so: Unable to open symbol file /home/enrico/CVSROOT/android/ aci/dsproapp/obj/local/armeabi/libutil.so. Error (9): Bad file descriptor

The command that I'm using is this:

ndk-stack -sym ../obj/local/armeabi -dump /home/enrico/stacktrace/crash_waypoint.txt

All my native libraries are compiled with

APP_OPTIM := debug APP_STL := gnustl_static

In the Application.mk, so the debug symbols should be present. Did anyone of you had this problem before? Thanks, Enrico

Answer 1

Happened to me while trying to debug a crash in my C code. Scratched my head over this for about 3 hours.

You're probably using the .so file from {project_root}/libs/arm*/. You should use the one fron {project_root}/obj/local/arm*/. This one has the symbolic information.