Serge E. Hallyn wrote: > In do_exit(), the exit_task_namespaces() was placed after > exit_notify() because exit_notify ends up using the pid > namespace both to access the reaper, and for detaching the > pid. However, this placement allows an nfs server to reap > the task before exit_task_namespaces() completes. > > This patch moves the exit_task_namespaces() into release_task, > below release_thread() which puts the pids(), and just above > the call_rcu(delayed_put_task_struct). I believe this should > solve both problems. > > Signed-off-by: Serge E. Hallyn <serue at us.ibm.com> I've run some tests on x86 and x86_64: mounted a NFS share after having unshare(CLONE_NEWNS) and I didn't reproduce the bug Daniel had found. it looks safe. C.
