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| author | Yang Yingliang <yangyingliang@huawei.com> | 2022-11-14 16:26:35 +0100 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2022-12-01 01:13:17 +0100 |
| commit | f9574cd48679926e2a569e1957a5a1bcc8a719ac (patch) | |
| tree | 5118776268aefa9fa0cbd3489977fb2e13f51aab /drivers/rapidio/devices | |
| parent | fat (exportfs): fix some kernel-doc warnings (diff) | |
| download | linux-f9574cd48679926e2a569e1957a5a1bcc8a719ac.tar.xz linux-f9574cd48679926e2a569e1957a5a1bcc8a719ac.zip | |
rapidio: fix possible name leaks when rio_add_device() fails
Patch series "rapidio: fix three possible memory leaks".
This patchset fixes three name leaks in error handling.
- patch #1 fixes two name leaks while rio_add_device() fails.
- patch #2 fixes a name leak while rio_register_mport() fails.
This patch (of 2):
If rio_add_device() returns error, the name allocated by dev_set_name()
need be freed. It should use put_device() to give up the reference in the
error path, so that the name can be freed in kobject_cleanup(), and the
'rdev' can be freed in rio_release_dev().
Link: https://lkml.kernel.org/r/20221114152636.2939035-1-yangyingliang@huawei.com
Link: https://lkml.kernel.org/r/20221114152636.2939035-2-yangyingliang@huawei.com
Fixes: e8de370188d0 ("rapidio: add mport char device driver")
Fixes: 1fa5ae857bb1 ("driver core: get rid of struct device's bus_id string array")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Cc: Alexandre Bounine <alex.bou9@gmail.com>
Cc: Matt Porter <mporter@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'drivers/rapidio/devices')
| -rw-r--r-- | drivers/rapidio/devices/rio_mport_cdev.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/rapidio/devices/rio_mport_cdev.c b/drivers/rapidio/devices/rio_mport_cdev.c index 2cdc054e53a5..3cc83997a1f8 100644 --- a/drivers/rapidio/devices/rio_mport_cdev.c +++ b/drivers/rapidio/devices/rio_mport_cdev.c @@ -1804,8 +1804,11 @@ static int rio_mport_add_riodev(struct mport_cdev_priv *priv, rio_init_dbell_res(&rdev->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff); err = rio_add_device(rdev); - if (err) - goto cleanup; + if (err) { + put_device(&rdev->dev); + return err; + } + rio_dev_get(rdev); return 0; |