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5c3ecd659b
When one of the spufs files is mapped into a process address space, regular users can use ptrace to attempt accessing them with access_process_vm(). With the way that the mappings currently work, this likely causes an oops. Setting the vm_flags to VM_IO makes sure that ptrace can not access them but returns an error code. This is not the perfect solution in case of the local store mapping, but it fixes the oops in a well-defined way. Also remove leftover VM_RESERVED flags in spufs. The VM_RESERVED flag is on it's way out and not checked by the memory managment code anymore. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Christoph Hellwig <chellwig@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org> |
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