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| author | Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2020-10-06 16:36:47 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-14 10:31:22 +0200 |
| commit | b6df5afc3d81e34d32f0b092d59b7fe8915d824b (patch) | |
| tree | 88ea4a2beb69da35a94fe0afd47b0d042779ad74 | |
| parent | 13e7ffa315ad3ab69ccfa19fc9a6c08425728728 (diff) | |
| download | linux-stable-b6df5afc3d81e34d32f0b092d59b7fe8915d824b.tar.gz linux-stable-b6df5afc3d81e34d32f0b092d59b7fe8915d824b.tar.bz2 linux-stable-b6df5afc3d81e34d32f0b092d59b7fe8915d824b.zip | |
nvme-core: put ctrl ref when module ref get fail
commit 4bab69093044ca81f394bd0780be1b71c5a4d308 upstream.
When try_module_get() fails in the nvme_dev_open() it returns without
releasing the ctrl reference which was taken earlier.
Put the ctrl reference which is taken before calling the
try_module_get() in the error return code path.
Fixes: 52a3974feb1a "nvme-core: get/put ctrl and transport module in nvme_dev_open/release()"
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/nvme/host/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 9ea3d8e61100..b633ea40430e 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -2606,8 +2606,10 @@ static int nvme_dev_open(struct inode *inode, struct file *file) } nvme_get_ctrl(ctrl); - if (!try_module_get(ctrl->ops->module)) + if (!try_module_get(ctrl->ops->module)) { + nvme_put_ctrl(ctrl); return -EINVAL; + } file->private_data = ctrl; return 0; |