* [PATCH][GIT PULL] ftrace: Clear bits properly in reset_iter_read()
@ 2012-11-16 13:22 Steven Rostedt
2012-11-30 3:10 ` Steven Rostedt
0 siblings, 1 reply; 2+ messages in thread
From: Steven Rostedt @ 2012-11-16 13:22 UTC (permalink / raw)
To: LKML; +Cc: Ingo Molnar, Andrew Morton, stable, Dan Carpenter
Ingo,
Please pull the latest tip/perf/urgent tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
tip/perf/urgent
Head SHA1: 70f77b3f7ec010ff9624c1f2e39a81babc9e2429
Dan Carpenter (1):
ftrace: Clear bits properly in reset_iter_read()
----
kernel/trace/ftrace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
---------------------------
commit 70f77b3f7ec010ff9624c1f2e39a81babc9e2429
Author: Dan Carpenter <dan.carpenter@oracle.com>
Date: Sat Jun 9 19:10:27 2012 +0300
ftrace: Clear bits properly in reset_iter_read()
There is a typo here where '&' is used instead of '|' and it turns the
statement into a noop. The original code is equivalent to:
iter->flags &= ~((1 << 2) & (1 << 4));
Link: http://lkml.kernel.org/r/20120609161027.GD6488@elgon.mountain
Cc: stable@vger.kernel.org # all of them
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 9dcf15d..51b7159 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2437,7 +2437,7 @@ static void reset_iter_read(struct ftrace_iterator *iter)
{
iter->pos = 0;
iter->func_pos = 0;
- iter->flags &= ~(FTRACE_ITER_PRINTALL & FTRACE_ITER_HASH);
+ iter->flags &= ~(FTRACE_ITER_PRINTALL | FTRACE_ITER_HASH);
}
static void *t_start(struct seq_file *m, loff_t *pos)
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH][GIT PULL] ftrace: Clear bits properly in reset_iter_read()
2012-11-16 13:22 [PATCH][GIT PULL] ftrace: Clear bits properly in reset_iter_read() Steven Rostedt
@ 2012-11-30 3:10 ` Steven Rostedt
0 siblings, 0 replies; 2+ messages in thread
From: Steven Rostedt @ 2012-11-30 3:10 UTC (permalink / raw)
To: LKML; +Cc: Ingo Molnar, Andrew Morton, stable, Dan Carpenter
On Fri, 2012-11-16 at 08:22 -0500, Steven Rostedt wrote:
> Ingo,
Ping?
-- Steve
>
> Please pull the latest tip/perf/urgent tree, which can be found at:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
> tip/perf/urgent
>
> Head SHA1: 70f77b3f7ec010ff9624c1f2e39a81babc9e2429
>
>
> Dan Carpenter (1):
> ftrace: Clear bits properly in reset_iter_read()
>
> ----
> kernel/trace/ftrace.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> ---------------------------
> commit 70f77b3f7ec010ff9624c1f2e39a81babc9e2429
> Author: Dan Carpenter <dan.carpenter@oracle.com>
> Date: Sat Jun 9 19:10:27 2012 +0300
>
> ftrace: Clear bits properly in reset_iter_read()
>
> There is a typo here where '&' is used instead of '|' and it turns the
> statement into a noop. The original code is equivalent to:
>
> iter->flags &= ~((1 << 2) & (1 << 4));
>
> Link: http://lkml.kernel.org/r/20120609161027.GD6488@elgon.mountain
>
> Cc: stable@vger.kernel.org # all of them
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
>
> diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
> index 9dcf15d..51b7159 100644
> --- a/kernel/trace/ftrace.c
> +++ b/kernel/trace/ftrace.c
> @@ -2437,7 +2437,7 @@ static void reset_iter_read(struct ftrace_iterator *iter)
> {
> iter->pos = 0;
> iter->func_pos = 0;
> - iter->flags &= ~(FTRACE_ITER_PRINTALL & FTRACE_ITER_HASH);
> + iter->flags &= ~(FTRACE_ITER_PRINTALL | FTRACE_ITER_HASH);
> }
>
> static void *t_start(struct seq_file *m, loff_t *pos)
>
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