Re: [PATCH 1/2] null_blk: prevent NULL dereference in null_init_tag_set()

[Ming Lei <ming.lei@xxxxxxxxxx>]

Hello Dan,

On Fri, Jul 15, 2022 at 11:10:50AM +0300, Dan Carpenter wrote:
> The "nullb" pointer can be NULL.  Smatch prints a warning about this:
> 
>     drivers/block/null_blk/main.c:1914 null_init_tag_set()
>     error: we previously assumed 'nullb' could be null (see line 1911)
> 
> Fixes: 37ae152c7a0d ("null_blk: add configfs variables for 2 options")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

FYI,

I have posted another fix/cleanup for this issue:

https://lore.kernel.org/linux-block/20220715031916.151469-1-ming.lei@xxxxxxxxxx/T/#u


Thanks,
Ming