From: Chuck Lever <chuck.lever@xxxxxxxxxx>
On Tue, 05 Nov 2024 19:03:14 +0800, Yang Erkun wrote:
> The action force umount(umount -f) will attempt to kill all rpc_task even
> umount operation may ultimately fail if some files remain open.
> Consequently, if an action attempts to open a file, it can potentially
> send two rpc_task to nfs server.
>
> NFS CLIENT
> thread1 thread2
> open("file")
> ...
> nfs4_do_open
> _nfs4_do_open
> _nfs4_open_and_get_state
> _nfs4_proc_open
> nfs4_run_open_task
> /* rpc_task1 */
> rpc_run_task
> rpc_wait_for_completion_task
>
> [...]
Applied to nfsd-next for v6.13, thanks!
[1/1] nfsd: fix nfs4_openowner leak when concurrent nfsd4_open occur
commit: 519cdbfe501ddf4a29b9c72b6961c58a33afb041
--
Chuck Lever
