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NDK debug - How to resolve symbols from libc.so
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android777  
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 More options Feb 16 2011, 12:12 pm
From: android777 <anilreddy...@gmail.com>
Date: Wed, 16 Feb 2011 09:12:21 -0800 (PST)
Local: Wed, Feb 16 2011 12:12 pm
Subject: NDK debug - How to resolve symbols from libc.so
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I was running my app on emulator and the app crashed leaving me
unknown symbols on logcat and the debugger. Here is my output from
logcat and gdb.

ndk-gdb output :

Program received signal SIGSTOP, Stopped (signal).
0xafd0eb08 in __futex_syscall3 () from /home/anil/workspace/
FFMPEGFinal/obj/local/armeabi/libc.so
(gdb) bt
#0  0xafd0eb08 in __futex_syscall3 () from /home/anil/workspace/
FFMPEGFinal/obj/local/armeabi/libc.so
#1  0xafd107b0 in __pthread_cond_timedwait_relative () from /home/anil/
workspace/FFMPEGFinal/obj/local/armeabi/libc.so
Cannot access memory at address 0xbea768e4

LogCat Output :

02-15 23:42:39.347: INFO/DEBUG(31): *** *** *** *** *** *** *** ***
*** *** *** *** *** *** *** ***
02-15 23:42:39.347: INFO/DEBUG(31): Build fingerprint: 'generic/sdk/
generic/:2.2/FRF91/43546:eng/test-keys'
02-15 23:42:39.366: INFO/DEBUG(31): pid: 996, tid: 1024  >>>
ffmpeg.app <<<
02-15 23:42:39.381: INFO/DEBUG(31): signal 11 (SIGSEGV), fault addr
00000020
02-15 23:42:39.381: INFO/DEBUG(31):  r0 4739ad38  r1 001260e0  r2
00000001  r3 00000000
02-15 23:42:39.381: INFO/DEBUG(31):  r4 817dcde4  r5 4739ad38  r6
44e929f8  r7 4184ff94
02-15 23:42:39.381: INFO/DEBUG(31):  r8 4739ad80  r9 4184ff8c  10
4184ff78  fp 00268e38
02-15 23:42:39.448: INFO/DEBUG(31):  ip ab2145cc  sp 4739ace8  lr
8103c084  pc 81030c30  cpsr 20000010
02-15 23:42:40.061: INFO/DEBUG(31):          #00  pc 00030c30  /data/
data/ffmpeg.app/lib/libffmpeg.so
02-15 23:42:40.061: INFO/DEBUG(31):          #01  pc 0003c080  /data/
data/ffmpeg.app/lib/libffmpeg.so
02-15 23:42:40.190: INFO/DEBUG(31):          #02  pc 00013974  /system/
lib/libdvm.so
02-15 23:42:40.190: INFO/DEBUG(31):          #03  pc 0003de3c  /system/
lib/libdvm.so
02-15 23:42:40.217: INFO/DEBUG(31):          #04  pc 00037216  /system/
lib/libdvm.so
02-15 23:42:40.303: INFO/DEBUG(31):          #05  pc 00018714  /system/
lib/libdvm.so
02-15 23:42:40.310: INFO/DEBUG(31):          #06  pc 0001e8c4  /system/
lib/libdvm.so
02-15 23:42:40.472: INFO/DEBUG(31):          #07  pc 0001d790  /system/
lib/libdvm.so
02-15 23:42:40.487: INFO/DEBUG(31):          #08  pc 00053eec  /system/
lib/libdvm.so
02-15 23:42:40.527: INFO/DEBUG(31):          #09  pc 00054102  /system/
lib/libdvm.so
02-15 23:42:40.608: INFO/DEBUG(31):          #10  pc 0004825a  /system/
lib/libdvm.so
02-15 23:42:40.626: INFO/DEBUG(31):          #11  pc 0001103c  /system/
lib/libc.so
02-15 23:42:40.626: INFO/DEBUG(31):          #12  pc 00010b20  /system/
lib/libc.so
02-15 23:42:40.666: INFO/DEBUG(31): code around pc:
02-15 23:42:40.677: INFO/DEBUG(31): 81030c10 ea00001b e59f3090
e7943003 e5933000
02-15 23:42:40.757: INFO/DEBUG(31): 81030c20 e58d3024 e59f3080
e7943003 e5933000
02-15 23:42:40.780: INFO/DEBUG(31): 81030c30 e5933020 e1a02003
e59f306c e7943003
02-15 23:42:40.786: INFO/DEBUG(31): 81030c40 e5832000 e59d3024
e28dc004 e1a0e003
02-15 23:42:40.786: INFO/DEBUG(31): 81030c50 e8be000f e8ac000f
e89e000f e88c000f
02-15 23:42:40.786: INFO/DEBUG(31): code around lr:
02-15 23:42:40.807: INFO/DEBUG(31): 8103c064 e59f30a4 e7943003
e5933000 e3530000
02-15 23:42:40.816: INFO/DEBUG(31): 8103c074 da000015 e28d3018
e1a00003 ebffd2cb
02-15 23:42:40.826: INFO/DEBUG(31): 8103c084 e3a03b96 e58d304c
e59d3028 e58d3000
02-15 23:42:40.826: INFO/DEBUG(31): 8103c094 e3a00006 e59f3074
e08f3003 e1a01003
02-15 23:42:40.886: INFO/DEBUG(31): 8103c0a4 e59f306c e08f3003
e1a02003 e59d304c
02-15 23:42:40.886: INFO/DEBUG(31): stack:
02-15 23:42:40.908: INFO/DEBUG(31):     4739aca8  00000001
02-15 23:42:40.917: INFO/DEBUG(31):     4739acac  00000007
02-15 23:42:40.956: INFO/DEBUG(31):     4739acb0  418aba0c  /dev/
ashmem/dalvik-LinearAlloc (deleted)
02-15 23:42:40.997: INFO/DEBUG(31):     4739acb4  80846dad  /system/
lib/libdvm.so
02-15 23:42:41.049: INFO/DEBUG(31):     4739acb8  00126118  [heap]
02-15 23:42:41.049: INFO/DEBUG(31):     4739acbc  00268e38  [heap]
02-15 23:42:41.116: INFO/DEBUG(31):     4739acc0  44e82938  /dev/
ashmem/mspace/dalvik-heap/2 (deleted)
02-15 23:42:41.116: INFO/DEBUG(31):     4739acc4  8083d9b9  /system/
lib/libdvm.so
02-15 23:42:41.116: INFO/DEBUG(31):     4739acc8  8083d99d  /system/
lib/libdvm.so
02-15 23:42:41.137: INFO/DEBUG(31):     4739accc  00241c58  [heap]
02-15 23:42:41.137: INFO/DEBUG(31):     4739acd0  ab2150d8
02-15 23:42:41.137: INFO/DEBUG(31):     4739acd4  afd10510  /system/
lib/libc.so
02-15 23:42:41.137: INFO/DEBUG(31):     4739acd8  001260e0  [heap]
02-15 23:42:41.178: INFO/DEBUG(31):     4739acdc  ab2150d8
02-15 23:42:41.178: INFO/DEBUG(31):     4739ace0  df002777
02-15 23:42:41.178: INFO/DEBUG(31):     4739ace4  e3a070ad
02-15 23:42:41.178: INFO/DEBUG(31): #00 4739ace8  00126118  [heap]
02-15 23:42:41.178: INFO/DEBUG(31):     4739acec  4739ad74
02-15 23:42:41.178: INFO/DEBUG(31):     4739acf0  44e929f8  /dev/
ashmem/mspace/dalvik-heap/2 (deleted)
02-15 23:42:41.178: INFO/DEBUG(31):     4739acf4  4184ff94
02-15 23:42:41.178: INFO/DEBUG(31):     4739acf8  4739ad80
02-15 23:42:41.178: INFO/DEBUG(31):     4739acfc  4184ff8c
02-15 23:42:41.178: INFO/DEBUG(31):     4739ad00  00126118  [heap]
02-15 23:42:41.178: INFO/DEBUG(31):     4739ad04  4739ad74
02-15 23:42:41.251: INFO/DEBUG(31):     4739ad08  44e929f8  /dev/
ashmem/mspace/dalvik-heap/2 (deleted)
02-15 23:42:41.260: INFO/DEBUG(31):     4739ad0c  00000000
02-15 23:42:41.260: INFO/DEBUG(31):     4739ad10  817dcde4  /data/data/
ffmpeg.app/lib/libffmpeg.so
02-15 23:42:41.260: INFO/DEBUG(31):     4739ad14  817dcde4  /data/data/
ffmpeg.app/lib/libffmpeg.so
02-15 23:42:41.260: INFO/DEBUG(31):     4739ad18  00000000
02-15 23:42:41.260: INFO/DEBUG(31):     4739ad1c  8103c084  /data/data/
ffmpeg.app/lib/libffmpeg.so
02-15 23:42:41.260: INFO/DEBUG(31): #01 4739ad20  00126118  [heap]
02-15 23:42:41.332: INFO/DEBUG(31):     4739ad24  00000000
02-15 23:42:41.332: INFO/DEBUG(31):     4739ad28  42c3e41f  /data/
dalvik-cache/system@framew...@framework.jar@classes.dex
02-15 23:42:41.332: INFO/DEBUG(31):     4739ad2c  44e82938  /dev/
ashmem/mspace/dalvik-heap/2 (deleted)
02-15 23:42:41.416: INFO/DEBUG(31):     4739ad30  44e929f8  /dev/
ashmem/mspace/dalvik-heap/2 (deleted)
02-15 23:42:41.416: INFO/DEBUG(31):     4739ad34  00241c58  [heap]
02-15 23:42:41.416: INFO/DEBUG(31):     4739ad38  001260e0  [heap]
02-15 23:42:41.416: INFO/DEBUG(31):     4739ad3c  ab2150d8
02-15 23:42:41.436: INFO/DEBUG(31):     4739ad40  00000000
02-15 23:42:41.436: INFO/DEBUG(31):     4739ad44  afd103f0  /system/
lib/libc.so
02-15 23:42:41.436: INFO/DEBUG(31):     4739ad48  00126118  [heap]
02-15 23:42:41.436: INFO/DEBUG(31):     4739ad4c  000000ff
02-15 23:42:41.510: INFO/DEBUG(31):     4739ad50  42c3e41f  /data/
dalvik-cache/system@framew...@framework.jar@classes.dex
02-15 23:42:41.559: INFO/DEBUG(31):     4739ad54  4184ff2c
02-15 23:42:41.559: INFO/DEBUG(31):     4739ad58  000001e0
02-15 23:42:41.559: INFO/DEBUG(31):     4739ad5c  00000140
02-15 23:42:41.606: INFO/DEBUG(31):     4739ad60  000003c0
02-15 23:42:41.606: INFO/DEBUG(31):     4739ad64  00000004
02-15 23:42:41.606: INFO/DEBUG(31):     4739ad68  00000000
02-15 23:42:41.606: INFO/DEBUG(31):     4739ad6c  ad34912d  /system/
lib/libandroid_runtime.so
02-15 23:42:41.616: INFO/DEBUG(31):     4739ad70  00000000
02-15 23:42:41.616: INFO/DEBUG(31):     4739ad74  47829008
02-15 23:42:41.616: INFO/DEBUG(31):     4739ad78  4739ada0
02-15 23:42:41.616: INFO/DEBUG(31):     4739ad7c  80813978  /system/
lib/libdvm.so


 
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alan  
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 More options Feb 16 2011, 4:11 pm
From: alan <a...@birtles.org.uk>
Date: Wed, 16 Feb 2011 13:11:17 -0800 (PST)
Local: Wed, Feb 16 2011 4:11 pm
Subject: Re: NDK debug - How to resolve symbols from libc.so
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have you looked up these addresses?
02-15 23:42:40.061: INFO/DEBUG(31):          #00  pc 00030c30  /data/
data/ffmpeg.app/lib/libffmpeg.
so
02-15 23:42:40.061: INFO/DEBUG(31):          #01  pc 0003c080  /data/
data/ffmpeg.app/lib/libffmpeg.so


 
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android777  
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 More options Feb 16 2011, 5:34 pm
From: android777 <anilreddy...@gmail.com>
Date: Wed, 16 Feb 2011 14:34:26 -0800 (PST)
Local: Wed, Feb 16 2011 5:34 pm
Subject: Re: NDK debug - How to resolve symbols from libc.so
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how to lookup the addresses?

On Feb 16, 3:11 pm, alan <a...@birtles.org.uk> wrote:


 
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alan  
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 More options Feb 17 2011, 4:22 am
From: alan <a...@birtles.org.uk>
Date: Thu, 17 Feb 2011 01:22:47 -0800 (PST)
Local: Thurs, Feb 17 2011 4:22 am
Subject: Re: NDK debug - How to resolve symbols from libc.so
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use addr2line


 
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