This patch adds a test to forbid checkpoint attempts of
tasks that are still restarting.
Signed-off-by: Oren Laadan <orenl@xxxxxxxxxxxxxxx>
---
kernel/checkpoint/checkpoint.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/kernel/checkpoint/checkpoint.c b/kernel/checkpoint/checkpoint.c
index 5e7f15c..55f4dc2 100644
--- a/kernel/checkpoint/checkpoint.c
+++ b/kernel/checkpoint/checkpoint.c
@@ -268,6 +268,12 @@ static int may_checkpoint_task(struct ckpt_ctx *ctx, struct task_struct *t)
return -EBUSY;
}
+ /* is task restarting ? (ok to ignore task_lock, task is frozen) */
+ if (t->checkpoint_ctx) {
+ _ckpt_err(ctx, -EBUSY, "%(T)Task is restarting\n");
+ return -EBUSY;
+ }
+
/* FIX: add support for ptraced tasks */
if (task_ptrace(t)) {
_ckpt_err(ctx, -EBUSY, "%(T)Task is ptraced\n");
--
1.7.0.4
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