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Subject[PATCH -next] bcache: Fix potential NULL pointer dereference
Date
There is a potential NULL pointer dereference in case
kzalloc() fails and returns NULL.

Fixes: bc082a55d25c ("bcache: fix inaccurate io state for detached bcache devices")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
drivers/md/bcache/request.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 1507041..a50afa4 100644
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -1094,6 +1094,8 @@ static void detached_dev_do_request(struct bcache_device *d, struct bio *bio)
* which would call closure_get(&dc->disk.cl)
*/
ddip = kzalloc(sizeof(struct detached_dev_io_private), GFP_NOIO);
+ if (!ddip)
+ return;
ddip->d = d;
ddip->start_time = jiffies;
ddip->bi_end_io = bio->bi_end_io;
--
2.7.0

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