This is a note to let you know that I've just added the patch titled
PM / Domains: Fix unsafe iteration over modified list of device links
to the 4.4-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:
pm-domains-fix-unsafe-iteration-over-modified-list-of-device-links.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c6e83cac3eda5f7dd32ee1453df2f7abb5c6cd46 Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Date: Wed, 28 Jun 2017 16:56:18 +0200
Subject: PM / Domains: Fix unsafe iteration over modified list of device links
From: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
commit c6e83cac3eda5f7dd32ee1453df2f7abb5c6cd46 upstream.
pm_genpd_remove_subdomain() iterates over domain's master_links list and
removes matching element thus it has to use safe version of list
iteration.
Fixes: f721889ff65a ("PM / Domains: Support for generic I/O PM domains (v8)")
Signed-off-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Acked-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/base/power/domain.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/base/power/domain.c
+++ b/drivers/base/power/domain.c
@@ -1373,7 +1373,7 @@ EXPORT_SYMBOL_GPL(pm_genpd_add_subdomain
int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
struct generic_pm_domain *subdomain)
{
- struct gpd_link *link;
+ struct gpd_link *l, *link;
int ret = -EINVAL;
if (IS_ERR_OR_NULL(genpd) || IS_ERR_OR_NULL(subdomain))
@@ -1388,7 +1388,7 @@ int pm_genpd_remove_subdomain(struct gen
goto out;
}
- list_for_each_entry(link, &genpd->master_links, master_node) {
+ list_for_each_entry_safe(link, l, &genpd->master_links, master_node) {
if (link->slave != subdomain)
continue;
Patches currently in stable-queue which might be from krzk@xxxxxxxxxx are
queue-4.4/pm-domains-fix-unsafe-iteration-over-modified-list-of-domain-providers.patch
queue-4.4/pm-domains-fix-unsafe-iteration-over-modified-list-of-device-links.patch