Patch "IB/core: Release allocated memory in cache setup failure" has been added to the 4.9-stable tree

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

IB/core: Release allocated memory in cache setup failure

to the 4.9-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-core-release-allocated-memory-in-cache-setup-failure.patch
and it can be found in the queue-4.9 subdirectory.

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

From: Leon Romanovsky <[email protected]>
Date: Thu, 3 Nov 2016 16:44:11 +0200
Subject: IB/core: Release allocated memory in cache setup failure

From: Leon Romanovsky <[email protected]>

commit aa6aae38f7fb2c030f326a6dd10b58fff1851dfa upstream.

The failure in ib_cache_setup_one function during ib_register_device will leave leaked allocated memory.

---
 drivers/infiniband/core/cache.c |   16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

@@ -770,12 +770,8 @@ static int _gid_table_setup_one(struct i
 	int err = 0;
 
 	table = kcalloc(ib_dev->phys_port_cnt, sizeof(*table), GFP_KERNEL);
-
-	if (!table) {
-		pr_warn("failed to allocate ib gid cache for %s\n",
-			ib_dev->name);
+	if (!table)
 		return -ENOMEM;
-	}
 
 	for (port = 0; port < ib_dev->phys_port_cnt; port++) {
 		u8 rdma_port = port + rdma_start_port(ib_dev);

@@ -1170,14 +1166,13 @@ int ib_cache_setup_one(struct ib_device
 					  GFP_KERNEL);
 	if (!device->cache.pkey_cache ||
 	    !device->cache.lmc_cache) {
-		pr_warn("Couldn't allocate cache for %s\n", device->name);
-		return -ENOMEM;
+		err = -ENOMEM;
+		goto free;
 	}
 
 	err = gid_table_setup_one(device);
 	if (err)
-		/* Allocated memory will be cleaned in the release function */
-		return err;
+		goto free;
 
 	for (p = 0; p <= rdma_end_port(device) - rdma_start_port(device); ++p)
 		ib_cache_update(device, p + rdma_start_port(device));

@@ -1192,6 +1187,9 @@ int ib_cache_setup_one(struct ib_device
 
 err:
 	gid_table_cleanup_one(device);
+free:
+	kfree(device->cache.pkey_cache);
+	kfree(device->cache.lmc_cache);
 	return err;
 }
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.9/ib-mlx4-check-if-grh-is-available-before-using-it.patch queue-4.9/ib-mlx4-set-traffic-class-in-ah.patch queue-4.9/ib-mlx5-assign-srq-type-earlier.patch queue-4.9/ib-mlx4-fix-port-query-for-56gb-ethernet-links.patch queue-4.9/ib-mlx5-avoid-system-crash-when-enabling-many-vfs.patch queue-4.9/ib-mlx4-handle-well-known-gid-in-mad_demux-processing.patch queue-4.9/ib-ipoib-remove-can-t-use-gfp_noio-warning.patch queue-4.9/ib-mlx5-wait-for-all-async-command-completions-to-complete.patch queue-4.9/ib-mlx5-fix-reported-max-sge-calculation.patch queue-4.9/ib-mlx4-when-no-dmfs-for-ipoib-don-t-allow-net_if-qps.patch queue-4.9/ib-mlx4-fix-out-of-range-array-index-in-destroy-qp-flow.patch queue-4.9/ib-core-release-allocated-memory-in-cache-setup-failure.patch queue-4.9/ib-rxe-increase-max-number-of-completions-to-32k.patch