Patch "clk: fix a panic error caused by accessing NULL pointer" has been added to the 4.14-stable tree

This is a note to let you know that I've just added the patch titled

clk: fix a panic error caused by accessing NULL pointer

to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
clk-fix-a-panic-error-caused-by-accessing-null-pointer.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Cai Li <[email protected]>
Date: Tue, 21 Nov 2017 17:24:38 +0800
Subject: clk: fix a panic error caused by accessing NULL pointer

From: Cai Li <[email protected]>

[ Upstream commit 975b820b6836b6b6c42fb84cd2e772e2b41bca67 ]

In some cases the clock parent would be set NULL when doing re-parent, it will cause a NULL pointer accessing if clk_set trace event is enabled.

This patch sets the parent as "none" if the input parameter is NULL.

---
 include/trace/events/clk.h |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

@@ -134,12 +134,12 @@ DECLARE_EVENT_CLASS(clk_parent,
 
 	TP_STRUCT__entry(
 		__string(        name,           core->name                )
-		__string(        pname,          parent->name              )
+		__string(        pname, parent ? parent->name : "none"     )
 	),
 
 	TP_fast_assign(
 		__assign_str(name, core->name);
-		__assign_str(pname, parent->name);
+		__assign_str(pname, parent ? parent->name : "none");
 	),
 
 	TP_printk("%s %s", __get_str(name), __get_str(pname))

Patches currently in stable-queue which might be from [email protected] are

queue-4.14/clk-fix-a-panic-error-caused-by-accessing-null-pointer.patch