On Wed, Sep 20, 2017 at 03:39:41PM +0900, Sergey Senozhatsky wrote: > Use BUG_ON(in_interrupt()) in zs_map_object(). Calling this > function from IRQ is a bug, because we use per-CPU mappings > and interrupt may corrupt those buffers. > > Signed-off-by: Sergey Senozhatsky <sergey.senozhat...@gmail.com>
IMHO, corruption the buffer would be not enough to be a BUG_ON which stop the system fully so user loses any chances to shut down smooth/hunt it down. More serious thing of our case is that it can leak other user's data by overwriting, which is more concern I am thinking now. So, Acked-by: Minchan Kim <minc...@kernel.org> Thanks!