From 3bfbc6adbc5031e8a5907baa5beb27b41637742a Mon Sep 17 00:00:00 2001
From: Javier Gonzalez <javier@javigon.com>
Date: Tue, 12 Jan 2016 07:49:17 +0100
Subject: lightnvm: add check after mempool allocation
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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>
---
drivers/lightnvm/rrpc.c | 2 ++
1 file changed, 2 insertions(+)
(limited to 'drivers/lightnvm')
diff --git a/drivers/lightnvm/rrpc.c b/drivers/lightnvm/rrpc.c
index a1e7488c1f3e..f4bc98687d7f 100644
--- a/drivers/lightnvm/rrpc.c
+++ b/drivers/lightnvm/rrpc.c
@@ -287,6 +287,8 @@ static int rrpc_move_valid_pages(struct rrpc *rrpc, struct rrpc_block *rblk)
}
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) {
--
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