How to get native heap malloc's backtrace?

[gavinl...@gmail.com]

my phone is nexus 6 build aosp of shamu-userdebug which version is :

N6F26U

android-7.1.1_r28

I want to get my app native heap info the backtrace of malloc or other allocation. I followed  https://android.googlesource.com/platform/bionic/+/master/libc/malloc_debug/README.md.

for example:

i did this command:

adb shell stop
adb shell setprop libc.debug.malloc.options backtrace

adb shell setprop wrap.<my app name> '"LIBC_DEBUG_MALLOC_OPTIONS=backtrace logwrapper"'

adb shell start

but I get nothing from logcat.

As I expect, I would get the following information from logcat:

infomation of backtrace like this:

04-14 09:40:38.242  5029  5029 F DEBUG   : Build fingerprint: 'Android/aosp_shamu/shamu:7.1.1/N6F26U/:userdebug/test-keys'

04-14 09:40:38.242  5029  5029 F DEBUG   : Revision: '0'

04-14 09:40:38.246  5029  5029 F DEBUG   : ABI: 'arm'

04-14 09:40:38.246  5029  5029 F DEBUG   : pid: 5009, tid: 5009, name: putmethod.latin  >>> com.android.my app name <<<

04-14 09:40:38.246  5029  5029 F DEBUG   : signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0x0

04-14 09:40:38.246  5029  5029 F DEBUG   :     r0 00024104  r1 0002411c  r2 00000000  r3 00000000

04-14 09:40:38.246  5029  5029 F DEBUG   :     r4 00000000  r5 be9f1094  r6 000024b0  r7 0000004c

04-14 09:40:38.247  5029  5029 F DEBUG   :     r8 00000054  r9 00000004  sl 00000023  fp be9f1038

04-14 09:40:38.247  5029  5029 F DEBUG   :     ip be9f0fe8  sp be9f1020  lr b3296af9  pc a9fb5580  cpsr 600e0010

04-14 09:40:38.250  5029  5029 F DEBUG   : 

04-14 09:40:38.250  5029  5029 F DEBUG   : backtrace:

04-14 09:40:38.250  5029  5029 F DEBUG   :     #00 pc 000c2580  /system/lib/libjni_latinime.so (__cxa_get_globals+276)

04-14 09:40:38.250  5029  5029 F DEBUG   :     #01 pc 000c280c  /system/lib/libjni_latinime.so (__cxa_begin_catch+12)

04-14 09:40:38.250  5029  5029 F DEBUG   :     #02 pc 0007a1d0  /system/lib/libjni_latinime.so

so, How to get malloc's backtrace ? 

thx

kun