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kernel: vm: allow mmapping of the last page of the userspace.

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This commit is contained in:
Jérôme Duval
2018-01-27 17:15:52 +01:00
parent 3bcf027203
commit 1603eec4a4
1 changed files with 1 additions and 1 deletions
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src/system/kernel/vm/vm.cpp
+1 -1
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@@ -6402,7 +6402,7 @@ _user_map_file(const char* userName, void** userAddress, uint32 addressSpec,
return B_BAD_VALUE; return B_BAD_VALUE;
} }
if (!IS_USER_ADDRESS(address) if (!IS_USER_ADDRESS(address)
|| !IS_USER_ADDRESS((addr_t)address + size)) { || !IS_USER_ADDRESS((addr_t)address + size - 1)) {
return B_BAD_ADDRESS; return B_BAD_ADDRESS;
} }
} }