[bug report] fscache: Implement cache registration

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

Hello David Howells,

This is a semi-automatic email about new static checker warnings.

The patch 9549332df4ed: "fscache: Implement cache registration" from 
Oct 20, 2021, leads to the following Smatch complaint:

    fs/fscache/cache.c:186 fscache_put_cache()
    warn: variable dereferenced before IS_ERR check 'cache' (see line 182)

fs/fscache/cache.c
   181	{
   182		unsigned int debug_id = cache->debug_id;
                                        ^^^^^^^^^^^^^^^
Dereferenced

   183		bool zero;
   184		int ref;
   185	
   186		if (IS_ERR_OR_NULL(cache))
                                   ^^^^^
Checked too late.

   187			return;
   188	

regards,
dan carpenter

--
Linux-cachefs mailing list
Linux-cachefs@xxxxxxxxxx
https://listman.redhat.com/mailman/listinfo/linux-cachefs