Patch "irq/generic-chip: Don't replace domain's name" has been added to the 4.13-stable tree

Patch "irq/generic-chip: Don't replace domain's name" has been added to the 4.13-stable tree

[gregkh]

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

    irq/generic-chip: Don't replace domain's name

to the 4.13-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:
     irq-generic-chip-don-t-replace-domain-s-name.patch
and it can be found in the queue-4.13 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 72364d320644c12948786962673772f271039a4a Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Thu, 28 Sep 2017 12:37:31 +0800
Subject: irq/generic-chip: Don't replace domain's name

From: Jeffy Chen <jeffy.chen@rock-chips.com>

commit 72364d320644c12948786962673772f271039a4a upstream.

When generic irq chips are allocated for an irq domain the domain name is
set to the irq chip name. That was done to have named domains before the
recent changes which enforce domain naming were done.

Since then the overwrite causes a memory leak when the domain name is
dynamically allocated and even worse it would cause the domain free code to
free the wrong name pointer, which might point to a constant.

Remove the name assignment to prevent this.

Fixes: d59f6617eef0 ("genirq: Allow fwnode to carry name information only")
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20170928043731.4764-1-jeffy.chen@rock-chips.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 kernel/irq/generic-chip.c |    1 -
 1 file changed, 1 deletion(-)

--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -322,7 +322,6 @@ int __irq_alloc_domain_generic_chips(str
 		/* Calc pointer to the next generic chip */
 		tmp += sizeof(*gc) + num_ct * sizeof(struct irq_chip_type);
 	}
-	d->name = name;
 	return 0;
 }
 EXPORT_SYMBOL_GPL(__irq_alloc_domain_generic_chips);


Patches currently in stable-queue which might be from jeffy.chen@rock-chips.com are

queue-4.13/irq-generic-chip-don-t-replace-domain-s-name.patch