diff options
| author | Mikulas Patocka <mpatocka@redhat.com> | 2021-01-20 14:02:31 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-27 13:05:36 +0300 |
| commit | cf750e09d17f25cf763644168417fcad73e3ce0c (patch) | |
| tree | 5337317f33714c61a0c189bdcfe925fae0053308 /drivers/md | |
| parent | 97c5846e04532a0651da7016b4d35862993ea56d (diff) | |
| download | linux-cf750e09d17f25cf763644168417fcad73e3ce0c.tar.xz | |
dm integrity: fix a crash if "recalculate" used without "internal_hash"
commit 2d06dfecb132a1cc2e374a44eae83b5c4356b8b4 upstream.
Recalculate can only be specified with internal_hash.
Cc: stable@vger.kernel.org # v4.19+
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/md')
| -rw-r--r-- | drivers/md/dm-integrity.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c index bb99b599de77..1917051b512f 100644 --- a/drivers/md/dm-integrity.c +++ b/drivers/md/dm-integrity.c @@ -3515,6 +3515,12 @@ try_smaller_buffer: r = -ENOMEM; goto bad; } + } else { + if (ic->sb->flags & cpu_to_le32(SB_FLAG_RECALCULATING)) { + ti->error = "Recalculate can only be specified with internal_hash"; + r = -EINVAL; + goto bad; + } } ic->bufio = dm_bufio_client_create(ic->meta_dev ? ic->meta_dev->bdev : ic->dev->bdev, |