On Fri, 14 Nov 2014 23:59:06 -0500
> /*
> @@ -4575,20 +4575,33 @@ static size_t
> tracing_fill_pipe_page(size_t rem, struct trace_iterator *iter)
> {
> size_t count;
> + int save_len;
> int ret;
>
> /* Seq buffer is page-sized, exactly what we need. */
>
On Fri, 14 Nov 2014 23:59:06 -0500
/*
@@ -4575,20 +4575,33 @@ static size_t
tracing_fill_pipe_page(size_t rem, struct trace_iterator *iter)
{
size_t count;
+ int save_len;
int ret;
/* Seq buffer is page-sized, exactly what we need. */
for (;;) {
From: "Steven Rostedt (Red Hat)"
As the seq_buf->len will soon be +1 size when there's an overflow, we
must use trace_seq_used() or seq_buf_used() methods to get the real
length. This will prevent buffer overflow issues if just the len
of the seq_buf descriptor is used to copy memory.
Link:
From: Steven Rostedt (Red Hat) rost...@goodmis.org
As the seq_buf-len will soon be +1 size when there's an overflow, we
must use trace_seq_used() or seq_buf_used() methods to get the real
length. This will prevent buffer overflow issues if just the len
of the seq_buf descriptor is used to copy
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