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修正 hook 时遇到偶发的段错误 #4

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修正 hook 时遇到偶发的段错误 #4

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2 changes: 1 addition & 1 deletion docs/overview/code/main/jni/main.c
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Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ void hook()
addr = base_addr + 0x3f90;

//add write permission
mprotect((void *)PAGE_START(addr), PAGE_SIZE, PROT_READ | PROT_WRITE);
mprotect((void *)PAGE_START(addr), PAGE_SIZE * 2, PROT_READ | PROT_WRITE);

//replace the function address
*(void **)addr = my_malloc;
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2 changes: 1 addition & 1 deletion libxhook/jni/xh_util.c
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Original file line number Diff line number Diff line change
Expand Up @@ -108,7 +108,7 @@ int xh_util_get_addr_protect(uintptr_t addr, const char *pathname, unsigned int

int xh_util_set_addr_protect(uintptr_t addr, unsigned int prot)
{
if(0 != mprotect((void *)PAGE_START(addr), PAGE_SIZE, (int)prot))
if(0 != mprotect((void *)PAGE_START(addr), PAGE_SIZE * 2, (int)prot))
return 0 == errno ? XH_ERRNO_UNKNOWN : errno;

return 0;
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