Patchwork [3.5.y.z,extended,stable] Patch "ftrace: Clear bits properly in reset_iter_read()" has been added to staging queue

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Submitter Herton Ronaldo Krzesinski
Date Jan. 7, 2013, 8:33 p.m.
Message ID <1357590820-18054-1-git-send-email-herton.krzesinski@canonical.com>
Download mbox | patch
Permalink /patch/210142/
State New
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Comments

Herton Ronaldo Krzesinski - Jan. 7, 2013, 8:33 p.m.
This is a note to let you know that I have just added a patch titled

    ftrace: Clear bits properly in reset_iter_read()

to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.5.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Herton

------

From bc4da795ac75c2acbed3bf5e9be53ebdc37ba5dc Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Sat, 9 Jun 2012 19:10:27 +0300
Subject: [PATCH] ftrace: Clear bits properly in reset_iter_read()

commit 70f77b3f7ec010ff9624c1f2e39a81babc9e2429 upstream.

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

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
---
 kernel/trace/ftrace.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--
1.7.9.5

Patch

diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index a008663..97da2dc 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2358,7 +2358,7 @@  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)