Patch "mac80211_hwsim: don't use WQ_MEM_RECLAIM" has been added to the 4.15-stable tree

Patch "mac80211_hwsim: don't use WQ_MEM_RECLAIM" has been added to the 4.15-stable tree

[gregkh]

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

    mac80211_hwsim: don't use WQ_MEM_RECLAIM

to the 4.15-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:
     mac80211_hwsim-don-t-use-wq_mem_reclaim.patch
and it can be found in the queue-4.15 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 ce162bfbc0b601841886965baba14877127c7c7c Mon Sep 17 00:00:00 2001
From: Johannes Berg <johannes.berg@intel.com>
Date: Wed, 24 Jan 2018 08:40:51 +0100
Subject: mac80211_hwsim: don't use WQ_MEM_RECLAIM

From: Johannes Berg <johannes.berg@intel.com>

commit ce162bfbc0b601841886965baba14877127c7c7c upstream.

We're obviously not part of a memory reclaim path, so don't set the flag.

This also causes a warning in check_flush_dependency() since we end up
in a code path that flushes a non-reclaim workqueue, and we shouldn't do
that if we were really part of reclaim.

Reported-by: syzbot+41cdaf4232c50e658934@syzkaller.appspotmail.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/wireless/mac80211_hwsim.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -3455,7 +3455,7 @@ static int __init init_mac80211_hwsim(vo
 
 	spin_lock_init(&hwsim_radio_lock);
 
-	hwsim_wq = alloc_workqueue("hwsim_wq",WQ_MEM_RECLAIM,0);
+	hwsim_wq = alloc_workqueue("hwsim_wq", 0, 0);
 	if (!hwsim_wq)
 		return -ENOMEM;
 


Patches currently in stable-queue which might be from johannes.berg@intel.com are

queue-4.15/mac80211_hwsim-don-t-use-wq_mem_reclaim.patch