This patch adds a test to forbid checkpoint attempts of tasks that are still restarting.
Signed-off-by: Oren Laadan <[email protected]> --- 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 _______________________________________________ Containers mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Devel mailing list [email protected] https://openvz.org/mailman/listinfo/devel
