BULKSTAT_SINGLE exposed the ondisk uids/gids just like bulkstat, and can
be called on any inode, including ones not visible in the current mount.
Fixes: f736d93d76d3 ("xfs: support idmapped mounts")
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
fs/xfs/xfs_itable.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index ca310a125d1e14..3498b97fb06d31 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -168,6 +168,12 @@ xfs_bulkstat_one(
};
int error;
+ if (breq->mnt_userns != &init_user_ns) {
+ xfs_warn_ratelimited(breq->mp,
+ "bulkstat not supported inside of idmapped mounts.");
+ return -EINVAL;
+ }
+
ASSERT(breq->icount == 1);
bc.buf = kmem_zalloc(sizeof(struct xfs_bulkstat),
--
2.30.1
