Patch "IB/iser: Fix missing return status check in iser_send_data_out" has been added to the 4.1-stable tree

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 4.1-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-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Sagi Grimberg <[email protected]>
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 <[email protected]>

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.

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

@@ -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 [email protected] are

queue-4.1/ib-mlx4-fix-incorrect-cq-flushing-in-error-state.patch queue-4.1/ib-mlx5-avoid-destroying-a-null-mr-in-reg_user_mr-error-flow.patch queue-4.1/ib-iser-fix-missing-return-status-check-in-iser_send_data_out.patch queue-4.1/ib-uverbs-reject-invalid-or-unknown-opcodes.patch queue-4.1/ib-srp-stop-the-scsi_eh_-n-and-scsi_tmf_-n-threads-if-login-fails.patch queue-4.1/ib-iser-fix-possible-bogus-dma-unmapping.patch queue-4.1/ib-srp-handle-partial-connection-success-correctly.patch