Message ID | 20170124035533.11212-1-trond.myklebust@primarydata.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index ecc151697fd4..59bb574d7d7c 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -8490,6 +8490,7 @@ nfs4_layoutget_handle_exception(struct rpc_task *task, goto out; } + nfs4_sequence_free_slot(&lgp->res.seq_res); err = nfs4_handle_exception(server, nfs4err, exception); if (!status) { if (exception->retry)
We cannot call nfs4_handle_exception() without first ensuring that the slot has been freed. If not, we end up deadlocking with the process waiting for recovery to complete, and recovery waiting for the slot table to drain. Fixes: 2e80dbe7ac51 ("NFSv4.1: Close callback races for OPEN, LAYOUTGET...") Cc: stable@vger.kernel.org # v4.8+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com> --- fs/nfs/nfs4proc.c | 1 + 1 file changed, 1 insertion(+)