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-rw-r--r--arch/s390/mm/fault.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 75fde949d12..856a971759b 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -563,12 +563,14 @@ pfault_interrupt(struct pt_regs *regs, __u16 error_code)
* interrupt. pfault_wait is valid. Set pfault_wait
* back to zero and wake up the process. This can
* safely be done because the task is still sleeping
- * and can't procude new pfaults. */
+ * and can't produce new pfaults. */
tsk->thread.pfault_wait = 0;
wake_up_process(tsk);
+ put_task_struct(tsk);
}
} else {
/* signal bit not set -> a real page is missing. */
+ get_task_struct(tsk);
set_task_state(tsk, TASK_UNINTERRUPTIBLE);
if (xchg(&tsk->thread.pfault_wait, 1) != 0) {
/* Completion interrupt was faster than the initial
@@ -578,6 +580,7 @@ pfault_interrupt(struct pt_regs *regs, __u16 error_code)
* mode and can't produce new pfaults. */
tsk->thread.pfault_wait = 0;
set_task_state(tsk, TASK_RUNNING);
+ put_task_struct(tsk);
} else
set_tsk_need_resched(tsk);
}