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@@ -2377,9 +2377,10 @@ tracing_set_trace_write(struct file *filp, const char __user *ubuf,
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int i;
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size_t ret;
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+ ret = cnt;
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+
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if (cnt > max_tracer_type_len)
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cnt = max_tracer_type_len;
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- ret = cnt;
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if (copy_from_user(&buf, ubuf, cnt))
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return -EFAULT;
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@@ -2412,8 +2413,8 @@ tracing_set_trace_write(struct file *filp, const char __user *ubuf,
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out:
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mutex_unlock(&trace_types_lock);
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- if (ret == cnt)
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- filp->f_pos += cnt;
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+ if (ret > 0)
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+ filp->f_pos += ret;
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return ret;
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}
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