android ndk开发调试,Android NDK 开发的栈错误调试

绝地灬酷狼 2022-10-05 04:43 150阅读 0赞

怎样快速的定位错误：

view call stack of crashed application on android

On android, when a process crashes in native code, the call stack of the process will be saved to a log file in /data/tombstomes/, and written to logcat as well. The information is helpful for debugging.

Unfortunately, the call stack doesn't show in human readable format, file name, function name. Instead, it's shown as module name (e.g., libc.so) and memory address of the instruction. We can use addr2line to translate the address to corresponding file name and function name if we have the binary of the module that contains symbol information.

To make it easier to use, this function is included in agdbtool (see here for more). We can use

"agdb.py -r -e module\_name address"

to find out the function name of specified address within the module.

When we have a long call stack, instead of running the command above for each line in the call stack manually, we can feed the whole call stack to agdb through pipe and get the full resolved call stack. For example, use

"adb logcat | agdb.py -r"

command for adb logcat output with below contents:

22F/ASessionDescription(   33): frameworks/base/media/libstagefright/rtsp/ASessionDescription.cpp:264 CHECK\_GT( end,s) failed:  vs.

23I/DEBUG   (   30): \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\* \*\*\*

24I/DEBUG   (   30): Build fingerprint: 'generic/generic/generic:2.3.1/GINGERBREAD/eng.raymond.20101222.130550:eng/test-keys'

25I/DEBUG   (   30): pid: 33, tid: 450  >>> /system/bin/mediaserver <<<

26I/DEBUG   (   30): signal 11 (SIGSEGV), code 1 (SEGV\_MAPERR), fault addr deadbaad

27I/DEBUG   (   30):  r0 deadbaad  r1 0000000c  r2 00000027  r3 00000000

28I/DEBUG   (   30):  r4 00000080  r5 afd46668  r6 40806c10  r7 00000000

29I/DEBUG   (   30):  r8 8031db1d  r9 0000fae0  10 00100000  fp 00000001

30I/DEBUG   (   30):  ip ffffffff  sp 40806778  lr afd19375  pc afd15ef0  cpsr 00000030

31I/DEBUG   (   30):

\#00  pc 00015ef0  /system/lib/libc.so

32I/DEBUG   (   30):

\#01  pc 00001440  /system/lib/liblog.so

33I/DEBUG   (   30):

34I/DEBUG   (   30): code around pc:

35I/DEBUG   (   30): afd15ed0 68241c23 d1fb2c00 68dae027 d0042a00

36I/DEBUG   (   30): afd15ee0 20014d18 6028447d 48174790 24802227

37I/DEBUG   (   30): afd15ef0 f7f57002 2106eb56 ec92f7f6 0563aa01

38I/DEBUG   (   30): afd15f00 60932100 91016051 1c112006 e818f7f6

39I/DEBUG   (   30): afd15f10 2200a905 f7f62002 f7f5e824 2106eb42

40I/DEBUG   (   30):

41I/DEBUG   (   30): code around lr:

42I/DEBUG   (   30): afd19354 b0834a0d 589c447b 26009001 686768a5

43I/DEBUG   (   30): afd19364 220ce008 2b005eab 1c28d003 47889901

44I/DEBUG   (   30): afd19374 35544306 d5f43f01 2c006824 b003d1ee

45I/DEBUG   (   30): afd19384 bdf01c30 000281a8 ffffff88 1c0fb5f0

46I/DEBUG   (   30): afd19394 43551c3d a904b087 1c16ac01 604d9004

47I/DEBUG   (   30):

48I/DEBUG   (   30): stack:

........................

92I/DEBUG   (   30):     408067e4  6f697470

93I/BootReceiver(   75): Copying /data/tombstones/tombstone\_09 to DropBox (SYSTEM\_TOMBSTONE)

we get: