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ftrace: convert unsigned index to signed

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Impact: fix to unsigned compared to less than zero

Roel Kluin pointed out that there is a compare of an unsigned number
to less than zero. A previous clean up had the unsigned index set
to -1 for certain cases, but never converted it to signed.

Frederic Weisbecker noticed that another index is used to compare
the above index to and it also needs to be converted to signed.

[
  Converted ftrace_page->index to int from unsigned long as
  Andrew Morton pointed out that there's no need for it to
  stay a long.
]

Reported-by: Roel Kluin <roel.kluin@gmail.com>
Reported-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Steven Rostedt 2009-01-06 12:43:01 -05:00 committed by Ingo Molnar
parent 99793e3dbe
commit 431aa3fbf5
1 changed files with 2 additions and 2 deletions
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4
kernel/trace/ftrace.c
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@ -289,7 +289,7 @@ static DEFINE_MUTEX(ftrace_regex_lock);
struct ftrace_page {
struct ftrace_page *next;
unsigned long index;
int index;
struct dyn_ftrace records[];
};
@ -786,7 +786,7 @@ enum {
struct ftrace_iterator {
struct ftrace_page *pg;
unsigned idx;
int idx;
unsigned flags;
unsigned char buffer[FTRACE_BUFF_MAX+1];
unsigned buffer_idx;