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a095b4ed41
When the core module loops through an object's list of dynrelas, it
determines whether or not the target location of the dynrela is in a
read-only region of the patch module. If it is, the readonly flag is set to
1 and it calls set_memory_{rw,ro} before and after the probe_kernel_write()
operation. This flag gets set once, and never gets reset for subsequent
iterations. Therefore, if a target happens to be in a RW section of the
patch module, and readonly = 1 had been set before, we may unintentionally
set a normally RW page to RO. Fix this by setting the readonly flag with
each iteration of the loop.
Fixes #681.
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