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| author | Yu Kuai <yukuai3@huawei.com> | 2024-04-06 17:09:25 +0800 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2024-04-11 11:14:36 +0200 |
| commit | 9617cd6f24b294552a817f80f5225431ef67b540 (patch) | |
| tree | 6edfc794ad4e0c47ef1836516c188cdb79d9d55a /block | |
| parent | abe6acfa7d7b666d785eae706bd34b63f3c2b11f (diff) | |
| download | linux-9617cd6f24b294552a817f80f5225431ef67b540.tar.gz linux-9617cd6f24b294552a817f80f5225431ef67b540.tar.bz2 linux-9617cd6f24b294552a817f80f5225431ef67b540.zip | |
block: fix module reference leakage from bdev_open_by_dev error path
At the time bdev_may_open() is called, module reference is grabbed
already, hence module reference should be released if bdev_may_open()
failed.
This problem is found by code review.
Fixes: ed5cc702d311 ("block: Add config option to not allow writing to mounted devices")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
Link: https://lore.kernel.org/r/20240406090930.2252838-22-yukuai1@huaweicloud.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'block')
| -rw-r--r-- | block/bdev.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/bdev.c b/block/bdev.c index b8e32d933a63..3caf24e66559 100644 --- a/block/bdev.c +++ b/block/bdev.c @@ -873,7 +873,7 @@ int bdev_open(struct block_device *bdev, blk_mode_t mode, void *holder, goto abort_claiming; ret = -EBUSY; if (!bdev_may_open(bdev, mode)) - goto abort_claiming; + goto put_module; if (bdev_is_partition(bdev)) ret = blkdev_get_part(bdev, mode); else |