Deny CLONE_PARENT|CLONE_NEWPID combination.
CLONE_PARENT was probably used to implement an older threading model.
If so, for consistency with CLONE_THREAD, the CLONE_PARENT|CLONE_NEWPID
combination should also fail with -EINVAL.
Signed-off-by: Sukadev Bhattiprolu <sukadev@xxxxxxxxxx>
---
kernel/pid_namespace.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-mmotm/kernel/pid_namespace.c
===================================================================
--- linux-mmotm.orig/kernel/pid_namespace.c 2009-06-17 18:19:42.000000000 -0700
+++ linux-mmotm/kernel/pid_namespace.c 2009-06-17 18:19:58.000000000 -0700
@@ -118,7 +118,7 @@ struct pid_namespace *copy_pid_ns(unsign
{
if (!(flags & CLONE_NEWPID))
return get_pid_ns(old_ns);
- if (flags & CLONE_THREAD)
+ if (flags & (CLONE_THREAD|CLONE_PARENT))
return ERR_PTR(-EINVAL);
return create_pid_namespace(old_ns);
}
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