This is a note to let you know that I've just added the patch titled NFSv4.1: Fix the CREATE_SESSION slot number accounting to the 4.7-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: nfsv4.1-fix-the-create_session-slot-number-accounting.patch and it can be found in the queue-4.7 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From b519d408ea32040b1c7e10b155a3ee9a36660947 Mon Sep 17 00:00:00 2001 From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> Date: Sun, 11 Sep 2016 14:50:01 -0400 Subject: NFSv4.1: Fix the CREATE_SESSION slot number accounting From: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> commit b519d408ea32040b1c7e10b155a3ee9a36660947 upstream. Ensure that we conform to the algorithm described in RFC5661, section 18.36.4 for when to bump the sequence id. In essence we do it for all cases except when the RPC call timed out, or in case of the server returning NFS4ERR_DELAY or NFS4ERR_STALE_CLIENTID. Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/nfs/nfs4proc.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -7509,12 +7509,20 @@ static int _nfs4_proc_create_session(str status = rpc_call_sync(session->clp->cl_rpcclient, &msg, RPC_TASK_TIMEOUT); trace_nfs4_create_session(clp, status); + switch (status) { + case -NFS4ERR_STALE_CLIENTID: + case -NFS4ERR_DELAY: + case -ETIMEDOUT: + case -EACCES: + case -EAGAIN: + goto out; + }; + + clp->cl_seqid++; if (!status) { /* Verify the session's negotiated channel_attrs values */ status = nfs4_verify_channel_attrs(&args, &res); /* Increment the clientid slot sequence id */ - if (clp->cl_seqid == res.seqid) - clp->cl_seqid++; if (status) goto out; nfs4_update_session(session, &res); Patches currently in stable-queue which might be from trond.myklebust@xxxxxxxxxxxxxxx are queue-4.7/nfsv4.1-fix-oopsable-condition-in-server-callback-races.patch queue-4.7/pnfs-ensure-layoutget-and-layoutreturn-are-properly-serialised.patch queue-4.7/nfsv4.x-fix-a-refcount-leak-in-nfs_callback_up_net.patch queue-4.7/pnfs-flexfiles-fix-an-oopsable-condition-when-connection-to-the-ds-fails.patch queue-4.7/nfsv4.1-fix-the-create_session-slot-number-accounting.patch queue-4.7/pnfs-the-client-must-not-do-i-o-to-the-ds-if-it-s-lease-has-expired.patch -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html