2007/9/19, James Pearson <[EMAIL PROTECTED]>: > + while (count > 0) { > + int this_len, retval; > + > + this_len = mm->env_end - (mm->env_start + src); > + > + if (this_len <= 0) > + break; > + > + if (this_len > max_len) > + this_len = max_len; > + > + retval = access_process_vm(task, (mm->env_start + src), > + page, this_len, 0); > + > + if (retval <= 0) { > + ret = retval; > + break; > + } > + > + if (copy_to_user(buf, page, retval)) { ^^^^ shouldn't you only copy min(count,retval) bytes? otherwise you could write beyond the users buffer "buf", right?
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