Patch "IB/iser: Fix missing return status check in iser_send_data_out" has been added to the 4.2-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    IB/iser: Fix missing return status check in iser_send_data_out

to the 4.2-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:
     ib-iser-fix-missing-return-status-check-in-iser_send_data_out.patch
and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From d16739055bd1f562ae4d83e69f7f7f1cefcfbe16 Mon Sep 17 00:00:00 2001
From: Sagi Grimberg <sagig@mellanox.com>
Date: Thu, 6 Aug 2015 18:32:48 +0300
Subject: IB/iser: Fix missing return status check in iser_send_data_out

From: Sagi Grimberg <sagig@mellanox.com>

commit d16739055bd1f562ae4d83e69f7f7f1cefcfbe16 upstream.

Since commit "IB/iser: Fix race between iser connection teardown..."
iser_initialize_task_headers() might fail, so we need to check that.

Fixes: 7414dde0a6c3a958e (IB/iser: Fix race between iser connection ...)
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/infiniband/ulp/iser/iser_initiator.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

--- a/drivers/infiniband/ulp/iser/iser_initiator.c
+++ b/drivers/infiniband/ulp/iser/iser_initiator.c
@@ -454,7 +454,7 @@ int iser_send_data_out(struct iscsi_conn
 	unsigned long buf_offset;
 	unsigned long data_seg_len;
 	uint32_t itt;
-	int err = 0;
+	int err;
 	struct ib_sge *tx_dsg;
 
 	itt = (__force uint32_t)hdr->itt;
@@ -475,7 +475,9 @@ int iser_send_data_out(struct iscsi_conn
 	memcpy(&tx_desc->iscsi_header, hdr, sizeof(struct iscsi_hdr));
 
 	/* build the tx desc */
-	iser_initialize_task_headers(task, tx_desc);
+	err = iser_initialize_task_headers(task, tx_desc);
+	if (err)
+		goto send_data_out_error;
 
 	mem_reg = &iser_task->rdma_reg[ISER_DIR_OUT];
 	tx_dsg = &tx_desc->tx_sg[1];
@@ -502,7 +504,7 @@ int iser_send_data_out(struct iscsi_conn
 
 send_data_out_error:
 	kmem_cache_free(ig.desc_cache, tx_desc);
-	iser_err("conn %p failed err %d\n",conn, err);
+	iser_err("conn %p failed err %d\n", conn, err);
 	return err;
 }
 


Patches currently in stable-queue which might be from sagig@mellanox.com are

queue-4.2/ib-mlx4-fix-incorrect-cq-flushing-in-error-state.patch
queue-4.2/ib-mlx5-avoid-destroying-a-null-mr-in-reg_user_mr-error-flow.patch
queue-4.2/ib-iser-fix-missing-return-status-check-in-iser_send_data_out.patch
queue-4.2/ib-uverbs-reject-invalid-or-unknown-opcodes.patch
queue-4.2/ib-srp-stop-the-scsi_eh_-n-and-scsi_tmf_-n-threads-if-login-fails.patch
queue-4.2/ib-iser-fix-possible-bogus-dma-unmapping.patch
queue-4.2/ib-srp-handle-partial-connection-success-correctly.patch