[PATCH 17/17] sched/rtmutex/deadline: Fix a PI crash for deadline tasks

2018-11-09 Thread Henrik Austad
From: Xunlei Pang commit e96a7705e7d3fef96aec9b590c63b2f6f7d2ba22 upstream. A crash happened while I was playing with deadline PI rtmutex. BUG: unable to handle kernel NULL pointer dereference at 0018 IP: [] rt_mutex_get_top_task+0x1f/0x30 PGD 232a75067 PUD 230947067

[PATCH 17/17] sched/rtmutex/deadline: Fix a PI crash for deadline tasks

2018-11-09 Thread Henrik Austad
From: Xunlei Pang commit e96a7705e7d3fef96aec9b590c63b2f6f7d2ba22 upstream. A crash happened while I was playing with deadline PI rtmutex. BUG: unable to handle kernel NULL pointer dereference at 0018 IP: [] rt_mutex_get_top_task+0x1f/0x30 PGD 232a75067 PUD 230947067