Re: [PATCH] zram: fix NULL pointer in comp_algorithm_show()

[Sergey Senozhatsky]

On (24/11/09 11:23), Liu Shixin wrote:
> >> Fixes: 7ac07a26dea7 ("zram: preparation for multi-zcomp support")
> > So I think this fixes something much older, probably around e46b8a030d76d
> > time (2014).
> 
> The NULL pointer is introduced when zram->compressor is changed to zram->comp_algs in
> 7ac07a26dea, where the former is an array of chars and the latter is an array of pointers.
> Before that, if we cat comp_algorithm int the time window, we will get a message with no
> algorithm selected like this:

Good point, you are right.