From: Darrick J. Wong djwong@kernel.org
If the /quotas dirent points to an inode but the inode isn't loadable (and hence mkdir returns -EEXIST), don't crash, just bail out.
Cc: stable@vger.kernel.org # v6.13-rc1 Fixes: e80fbe1ad8eff7 ("xfs: use metadir for quota inodes") Signed-off-by: "Darrick J. Wong" djwong@kernel.org Reviewed-by: Christoph Hellwig hch@lst.de --- fs/xfs/xfs_qm.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c index 69b70c3e999d72..dc8b1010d4d332 100644 --- a/fs/xfs/xfs_qm.c +++ b/fs/xfs/xfs_qm.c @@ -731,6 +731,13 @@ xfs_qm_create_metadir_qinos( error = xfs_dqinode_mkdir_parent(mp, &qi->qi_dirip); if (error && error != -EEXIST) return error; + /* + * If the /quotas dirent points to an inode that isn't + * loadable, qi_dirip will be NULL but mkdir_parent will return + * -EEXIST. In this case the metadir is corrupt, so bail out. + */ + if (XFS_IS_CORRUPT(mp, qi->qi_dirip == NULL)) + return -EFSCORRUPTED; }
if (XFS_IS_UQUOTA_ON(mp) && !qi->qi_uquotaip) {