d:\linux\linuxkernel\WORKING_DIRECTORY\android-omap-20111108-gingerbread\dalvik\vm\oo\Class.c
bool dvmClassStartup(void)
gDvm.pBootLoaderAlloc = dvmLinearAllocCreate(NULL);
d:\linux\linuxkernel\WORKING_DIRECTORY\android-omap-20111108-gingerbread\dalvik\vm\LinearAlloc.c
LinearAllocHdr* dvmLinearAllocCreate(Object* classLoader)
pHdr->mapAddr = mmap(NULL, pHdr->mapLength, PROT_READ | PROT_WRITE,
MAP_PRIVATE, fd, 0);// 0xa850000
static inline LinearAllocHdr* getHeader(Object* classLoader)
{
return gDvm.pBootLoaderAlloc;
}
void* dvmLinearAlloc(Object* classLoader, size_t size)
{
LinearAllocHdr* pHdr = getHeader(classLoader);
*(u4*)(pHdr->mapAddr + startOffset) = size;
This is writing the memory of mappingfile, and there's some kind of vialation. In LinearAlloc.c:
// pHdr->mapAddr = mmap(NULL, pHdr->mapLength, PROT_READ | PROT_WRITE,
// MAP_PRIVATE, fd, 0);
pHdr->mapAddr = mmap(NULL, pHdr->mapLength, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
d:\linux\linuxkernel\WORKING_DIRECTORY\android-omap-20111108-gingerbread\dalvik\vm\LinearAlloc.
* commented by ango
*/
// if (mprotect(pHdr->mapAddr, pHdr->mapLength, PROT_NONE) != 0) {
mprotect make the pHdr->mapAddr cannot be accessed at all
0 0x005556cb dvmLinearAlloc d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/vm/LinearAlloc.c 382
1 0x004d1e8a loadClassFromDex0 d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/vm/oo/Class.c 1750
2 0x004d24f1 loadClassFromDex d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/vm/oo/Class.c 1921
3 0x004d16dd findClassNoInit d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/vm/oo/Class.c 1461
4 0x004d1586 dvmFindSystemClassNoInit d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/vm/oo/Class.c 1382
5 0x004d14e2 dvmFindSystemClass d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/vm/oo/Class.c 1360
6 0x0052ecab loadAllClasses d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/vm/analysis/DexPrepare.c 871
7 0x0052eb56 rewriteDex d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/vm/analysis/DexPrepare.c 800
8 0x0052e577 dvmContinueOptimization d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/vm/analysis/DexPrepare.c 577
9 0x0040205f fromDex d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/dexopt/OptMain.c 538
10 0x00402188 dexoptmain d:/linux/linuxkernel/WORKING_DIRECTORY/android-omap-20111108-gingerbread/dalvik/dexopt/OptMain.c 597
11 0x00401330 main d:/linux/linuxkernel/WORKING_DIRECTORY/ango/dexopt/main.c 8