On Tue, 2026-11-10 at 10:14 +0100, Christian Brauner wrote: > zloop opens its zone files by name below the base directory but a > bind > mount can put any file there, including a procfs or sysfs file. > Refuse > files on pseudo filesystems as zone files just like loop does. > > Signed-off-by: Christian Brauner (Amutable) <[email protected]>
Reviewed-by: Alexander Mikhalitsyn <[email protected]> > --- > drivers/block/zloop.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/block/zloop.c b/drivers/block/zloop.c > index 65634a39b0bf..dcc06dd47b04 100644 > --- a/drivers/block/zloop.c > +++ b/drivers/block/zloop.c > @@ -1137,6 +1137,11 @@ static int zloop_init_zone(struct zloop_device > *zlo, struct zloop_options *opts, > goto out_fput; > } > > + if (file_is_pseudo(zone->file)) { > + ret = -EINVAL; > + goto out_fput; > + } > + > if (zlo->block_size) { > ret = zloop_get_block_size(zlo, zone); > if (ret)
