On Tue, Oct 11, 2022 at 02:38:38PM -0700, Eric Biggers wrote: > From: Eric Biggers <ebiggers@xxxxxxxxxx> > > Commit d7e7b9af104c ("fscrypt: stop using keyrings subsystem for > fscrypt_master_key") moved the keyring destruction from __put_super() to > generic_shutdown_super() so that the filesystem's block device(s) are > still available. Unfortunately, this causes a memory leak in the case > where a mount is attempted with the test_dummy_encryption mount option, > but the mount fails after the option has already been processed. > > To fix this, attempt the keyring destruction in both places. > > Reported-by: syzbot+104c2a89561289cec13e@xxxxxxxxxxxxxxxxxxxxxxxxx > Fixes: d7e7b9af104c ("fscrypt: stop using keyrings subsystem for fscrypt_master_key") > Signed-off-by: Eric Biggers <ebiggers@xxxxxxxxxx> > --- Looks good, Reviewed-by: Christian Brauner (Microsoft) <brauner@xxxxxxxxxx>