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block: Fix regression in sed-opal for a saved key. 

The commit 3bfeb61256
introduced the use of keyring for sed-opal.

Unfortunately, there is also a possibility to save
the Opal key used in opal_lock_unlock().

This patch switches the order of operation, so the cached
key is used instead of failure for opal_get_key.

The problem was found by the cryptsetup Opal test recently
added to the cryptsetup tree.

Fixes: 3bfeb61256 ("block: sed-opal: keyring support for SED keys")
Tested-by: Ondrej Kozina <okozina@redhat.com>
Signed-off-by: Milan Broz <gmazyland@gmail.com>
Link: https://lore.kernel.org/r/20231003100209.380037-1-gmazyland@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Milan Broz 2023-10-03 12:02:09 +02:00 committed by Jens Axboe
parent 1364a3c391
commit 4eaf0932c6
1 changed files with 3 additions and 4 deletions
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7
block/sed-opal.c
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@ -2888,12 +2888,11 @@ static int opal_lock_unlock(struct opal_dev *dev,
if (lk_unlk->session.who > OPAL_USER9)
return -EINVAL;
ret = opal_get_key(dev, &lk_unlk->session.opal_key);
if (ret)
return ret;
mutex_lock(&dev->dev_lock);
opal_lock_check_for_saved_key(dev, lk_unlk);
ret = __opal_lock_unlock(dev, lk_unlk);
ret = opal_get_key(dev, &lk_unlk->session.opal_key);
if (!ret)
ret = __opal_lock_unlock(dev, lk_unlk);
mutex_unlock(&dev->dev_lock);
return ret;