fileattr_set_prepare() should check if project ID
is valid, otherwise dqget() will return NULL for
such project ID quota.
Signed-off-by: Wang Shilong <wshilong@ddn.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
if ((old_ma->fsx_xflags ^ fa->fsx_xflags) &
FS_XFLAG_PROJINHERIT)
return -EINVAL;
+ } else {
+ /*
+ * Caller is allowed to change the project ID. If it is being
+ * changed, make sure that the new value is valid.
+ */
+ if (old_ma->fsx_projid != fa->fsx_projid &&
+ !projid_valid(make_kprojid(&init_user_ns, fa->fsx_projid)))
+ return -EINVAL;
}
/* Check extent size hints. */