diff options
| author | Luis Chamberlain <mcgrof@kernel.org> | 2021-10-15 16:30:22 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-21 09:00:56 -0600 |
| commit | e7089f65dd51afeda5eb760506b5950d95f9ec29 (patch) | |
| tree | 7369ad0c4edffb82c3a1121534f5a92c17bf538c /drivers/md/dm.c | |
| parent | ff06ed7e815ccd3f80cfd4d5dd30687bc722e871 (diff) | |
dm: add add_disk() error handling
We never checked for errors on add_disk() as this function
returned void. Now that this is fixed, use the shiny new
error handling.
There are two calls to dm_setup_md_queue() which can fail then,
one on dm_early_create() and we can easily see that the error path
there calls dm_destroy in the error path. The other use case is on
the ioctl table_load case. If that fails userspace needs to call
the DM_DEV_REMOVE_CMD to cleanup the state - similar to any other
failure.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Link: https://lore.kernel.org/r/20211015233028.2167651-4-mcgrof@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/md/dm.c')
| -rw-r--r-- | drivers/md/dm.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 7870e6460633..79d4ac4aab05 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -2078,7 +2078,9 @@ int dm_setup_md_queue(struct mapped_device *md, struct dm_table *t) if (r) return r; - add_disk(md->disk); + r = add_disk(md->disk); + if (r) + return r; r = dm_sysfs_init(md); if (r) { |