On Mon 12-06-23 18:16:14, Jan Kara wrote: > Writing to mounted devices is dangerous and can lead to filesystem > corruption as well as crashes. Furthermore syzbot comes with more and > more involved examples how to corrupt block device under a mounted > filesystem leading to kernel crashes and reports we can do nothing > about. Add config option to disallow writing to mounted (exclusively > open) block devices. Syzbot can use this option to avoid uninteresting > crashes. Also users whose userspace setup does not need writing to > mounted block devices can set this config option for hardening. > > Link: https://lore.kernel.org/all/60788e5d-5c7c-1142-e554-c21d709acfd9@xxxxxxxxxx > Signed-off-by: Jan Kara <jack@xxxxxxx> Please disregard this patch. I had uncommited fixups in my tree. I'll send fixed version shortly. I'm sorry for the noise. Honza -- Jan Kara <jack@xxxxxxxx> SUSE Labs, CR
