Patch "[PATCH 029/135] lightnvm: add check after mempool allocation" has been added to the 4.4-stable tree

Patch "[PATCH 029/135] lightnvm: add check after mempool allocation" has been added to the 4.4-stable tree

[gregkh]

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

    [PATCH 029/135] lightnvm: add check after mempool allocation

to the 4.4-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:
     0029-lightnvm-add-check-after-mempool-allocation.patch
and it can be found in the queue-4.4 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 47576e733b8fb27b0631e40543bb85ec1eb40230 Mon Sep 17 00:00:00 2001
From: Javier Gonzalez <javier@javigon.com>
Date: Tue, 12 Jan 2016 07:49:17 +0100
Subject: [PATCH 029/135] lightnvm: add check after mempool allocation
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[ Upstream commit 3bfbc6adbc5031e8a5907baa5beb27b41637742a ]

The mempool allocation might fail. Make sure to return error when it
does, instead of causing a kernel panic.

Signed-off-by: Javier Gonzalez <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/lightnvm/rrpc.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -287,6 +287,8 @@ static int rrpc_move_valid_pages(struct
 	}
 
 	page = mempool_alloc(rrpc->page_pool, GFP_NOIO);
+	if (!page)
+		return -ENOMEM;
 
 	while ((slot = find_first_zero_bit(rblk->invalid_pages,
 					    nr_pgs_per_blk)) < nr_pgs_per_blk) {


Patches currently in stable-queue which might be from javier@javigon.com are

queue-4.4/0029-lightnvm-add-check-after-mempool-allocation.patch