title: Android Segmentation Fault
body: <p>We are working on a project for Android and our platform is arm-base.
  We found that there is very low probability that the application crash happened in dalvik. 
  Belows are crash log messages.
  I think that segmentation fault is caused by memory corruption, which is root cause of this problems, but I don't know how to debug this issue.</p>
  
  <p>Any hints greatly appreciated. </p>
  
  <p>Regards,</p>
  
  <p><pre><code>06-20 04:42:47.986 I/DEBUG   (  803): <strong>* <em></strong> *</em>* <strong>* <em></strong> *</em>* <strong>* <em></strong> *</em>* <strong>* <em></strong> *</em>* <strong>* <em></strong> *</em>* <em>*</em>
  06-20 04:42:47.986 I/DEBUG   (  803): Build fingerprint: 'TI/omap3evm/omap3evm:2.3/GRH55/eng.root.20130321.220023:userdebug/test-keys'
  06-20 04:42:47.986 I/DEBUG   (  803): pid: 1229, tid: 1232  >>> com.samsung.xoa.ui.local.android.app.initialsetup &lt;&lt;&lt;
  06-20 04:42:47.986 I/DEBUG   (  803): signal 11 (SIGSEGV), code 1 (SEGV_MAPERR), fault addr 0063008f
  06-20 04:42:47.986 I/DEBUG   (  803):  r0 00000000  r1 0063006f  r2 40009328  r3 400091e8
  06-20 04:42:47.986 I/DEBUG   (  803):  r4 47095000  r5 40009228  r6 401a06d0  r7 81da5608
  06-20 04:42:47.986 I/DEBUG   (  803):  r8 fffffe7c  r9 81da5608  10 00002000  fp 44dafd78
  06-20 04:42:47.986 I/DEBUG   (  803):  ip 81daad38  sp 44dafd40  lr 81d36348  pc 81d35bd4  cpsr 80000010
  06-20 04:42:47.986 I/DEBUG   (  803):  d0  403b0ad0403e6019  d1  40408e704040961a
  06-20 04:42:47.986 I/DEBUG   (  803):  d2  4042e4384042eb1b  d3  4042d4d04042dcff
  06-20 04:42:47.986 I/DEBUG   (  803):  d4  40258b1840260d48  d5  402393f840252c30
  06-20 04:42:47.986 I/DEBUG   (  803):  d6  401f2d8840223d98  d7  40131a50401a8398
  06-20 04:42:47.986 I/DEBUG   (  803):  d8  00000011e7adbd96  d9  0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d10 0000000000000000  d11 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d12 0000000000000000  d13 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d14 0000000000000000  d15 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d16 0000000000000000  d17 3ff0000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d18 0000000000000000  d19 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d20 0000000000000000  d21 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d22 0000000000000000  d23 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d24 0000000000000000  d25 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d26 0000000000000000  d27 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d28 0000000000000000  d29 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  d30 0000000000000000  d31 0000000000000000
  06-20 04:42:47.986 I/DEBUG   (  803):  scr 80000012
  06-20 04:42:47.986 I/DEBUG   (  803): 
  06-20 04:42:48.010 I/DEBUG   (  803):          #00  pc 00035bd4  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803):          #01  pc 00036344  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803):          #02  pc 00020338  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803): 
  06-20 04:42:48.010 I/DEBUG   (  803): code around pc:
  06-20 04:42:48.010 I/DEBUG   (  803): 81d35bb4 0a000001 e1a01006 eb014609 e797c008 
  06-20 04:42:48.010 I/DEBUG   (  803): 81d35bc4 e5961000 e59c20ac e1510002 0a0000b5 
  06-20 04:42:48.010 I/DEBUG   (  803): 81d35bd4 e5912020 e3120101 0a000055 e3510000 
  06-20 04:42:48.010 I/DEBUG   (  803): 81d35be4 e1a03001 0a000021 e5950010 e1510000 
  06-20 04:42:48.010 I/DEBUG   (  803): 81d35bf4 3a00001e e5953000 e593c00c e5930010 
  06-20 04:42:48.010 I/DEBUG   (  803): 
  06-20 04:42:48.010 I/DEBUG   (  803): code around lr:
  06-20 04:42:48.010 I/DEBUG   (  803): 81d36328 e590404c e5812054 e1540003 0a000006 
  06-20 04:42:48.010 I/DEBUG   (  803): 81d36338 e4930004 e1a01007 e5873008 ebfffe10 
  06-20 04:42:48.010 I/DEBUG   (  803): 81d36348 e5973008 e1540003 1afffff8 e3a00000 
  06-20 04:42:48.010 I/DEBUG   (  803): 81d36358 eb0143fe e28dd02c e8bd8ff0 e1a0000b 
  06-20 04:42:48.010 I/DEBUG   (  803): 81d36368 eb01442e eafffffa e59fe048 e3a00006 
  06-20 04:42:48.010 I/DEBUG   (  803): 
  06-20 04:42:48.010 I/DEBUG   (  803): stack:
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd00  400091f0  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd04  01040004<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd08  40009228  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd0c  00000000<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd10  00000001<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd14  fffffe7c<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd18  00264fa0  [heap]
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd1c  47095000  /dev/ashmem/CursorWindow (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd20  40009228  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd24  403e8b38  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd28  81da5608  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd2c  fffffe7c<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd30  81da5608  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd34  00002000<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd38  df002777<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd3c  e3a070ad<br>
  06-20 04:42:48.010 I/DEBUG   (  803): #00 44dafd40  47095000  /dev/ashmem/CursorWindow (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd44  00253644  [heap]
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd48  00000001<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd4c  40009228  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd50  fffffe7c<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd54  81da5608  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd58  00002000<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd5c  81d36348  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803): #01 44dafd60  000002bb<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd64  81d9ef60  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd68  81d9f02c  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd6c  81da5608  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd70  400091e8  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd74  fffffe7c<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd78  00253644  [heap]
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd7c  00252b58  [heap]
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd80  00000400<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd84  7fffffff<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd88  400091e8  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd8c  400091e8  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd90  81da5608  /system/lib/libdvm.so
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd94  00000001<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd98  fffffe84<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafd9c  fffffe7c<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafda0  00002710<br>
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafda4  400091f4  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafda8  400091f8  /dev/ashmem/dalvik-heap (deleted)
  06-20 04:42:48.010 I/DEBUG   (  803):     44dafdac 81d2033c  /system/lib/libdvm.so
  </pre></code></p>