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%3Ba=su...
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