commit f74c371fe72a4f820d287db8067683fb533e4ede
author Eric Dumazet <edumazet@google.com> Thu Oct 04 17:41:37 2018 -0700
committer Dmitry Torokhov <dmitry.torokhov@gmail.com> Thu Oct 04 17:42:26 2018 -0700
tree f33df632923f8e573967ea1e68106bc74a29f55c
parent 684bec1092b6991ff2a7751e8a763898576eb5c2

Input: mousedev - add a schedule point in mousedev_write()

syzbot was able to trigger rcu stalls by calling write()
with large number of bytes.

Add a cond_resched() in the loop to avoid this.

Link: https://lkml.org/lkml/2018/8/23/1106
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot+9436b02171ac0894d33e@syzkaller.appspotmail.com
Reviewed-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>