CC: [email protected]
BCC: [email protected]
CC: [email protected]
TO: Sunil Goutham <[email protected]>
CC: Subbaraya Sundeep <[email protected]>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 
master
head:   eaea45fc0e7b6ae439526b4a41d91230c8517336
commit: e8e095b3b37004a4048af69de60c9af2d2268a1d octeontx2-af: cn10k: Bandwidth 
profiles config support
date:   11 months ago
:::::: branch date: 3 hours ago
:::::: commit date: 11 months ago
config: s390-randconfig-m031-20220522 
(https://download.01.org/0day-ci/archive/20220522/[email protected]/config)
compiler: s390-linux-gcc (GCC) 11.3.0

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <[email protected]>
Reported-by: Dan Carpenter <[email protected]>

smatch warnings:
drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c:4360 
rvu_mbox_handler_nix_bandprof_free() error: testing array offset 'idx' after 
use.

vim +/idx +4360 drivers/net/ethernet/marvell/octeontx2/af/rvu_nix.c

e8e095b3b37004 Sunil Goutham 2021-06-15  4317  
e8e095b3b37004 Sunil Goutham 2021-06-15  4318  int 
rvu_mbox_handler_nix_bandprof_free(struct rvu *rvu,
e8e095b3b37004 Sunil Goutham 2021-06-15  4319                                  
struct nix_bandprof_free_req *req,
e8e095b3b37004 Sunil Goutham 2021-06-15  4320                                  
struct msg_rsp *rsp)
e8e095b3b37004 Sunil Goutham 2021-06-15  4321  {
e8e095b3b37004 Sunil Goutham 2021-06-15  4322   int blkaddr, layer, prof_idx, 
idx, err;
e8e095b3b37004 Sunil Goutham 2021-06-15  4323   u16 pcifunc = req->hdr.pcifunc;
e8e095b3b37004 Sunil Goutham 2021-06-15  4324   struct nix_ipolicer *ipolicer;
e8e095b3b37004 Sunil Goutham 2021-06-15  4325   struct nix_hw *nix_hw;
e8e095b3b37004 Sunil Goutham 2021-06-15  4326  
e8e095b3b37004 Sunil Goutham 2021-06-15  4327   if (req->free_all)
e8e095b3b37004 Sunil Goutham 2021-06-15  4328           return 
nix_free_all_bandprof(rvu, pcifunc);
e8e095b3b37004 Sunil Goutham 2021-06-15  4329  
e8e095b3b37004 Sunil Goutham 2021-06-15  4330   if (!rvu->hw->cap.ipolicer)
e8e095b3b37004 Sunil Goutham 2021-06-15  4331           return 
NIX_AF_ERR_IPOLICER_NOTSUPP;
e8e095b3b37004 Sunil Goutham 2021-06-15  4332  
e8e095b3b37004 Sunil Goutham 2021-06-15  4333   err = nix_get_struct_ptrs(rvu, 
pcifunc, &nix_hw, &blkaddr);
e8e095b3b37004 Sunil Goutham 2021-06-15  4334   if (err)
e8e095b3b37004 Sunil Goutham 2021-06-15  4335           return err;
e8e095b3b37004 Sunil Goutham 2021-06-15  4336  
e8e095b3b37004 Sunil Goutham 2021-06-15  4337   mutex_lock(&rvu->rsrc_lock);
e8e095b3b37004 Sunil Goutham 2021-06-15  4338   /* Free the requested profile 
indices */
e8e095b3b37004 Sunil Goutham 2021-06-15  4339   for (layer = 0; layer < 
BAND_PROF_NUM_LAYERS; layer++) {
e8e095b3b37004 Sunil Goutham 2021-06-15  4340           if (layer == 
BAND_PROF_INVAL_LAYER)
e8e095b3b37004 Sunil Goutham 2021-06-15  4341                   continue;
e8e095b3b37004 Sunil Goutham 2021-06-15  4342           if 
(!req->prof_count[layer])
e8e095b3b37004 Sunil Goutham 2021-06-15  4343                   continue;
e8e095b3b37004 Sunil Goutham 2021-06-15  4344  
e8e095b3b37004 Sunil Goutham 2021-06-15  4345           ipolicer = 
&nix_hw->ipolicer[layer];
e8e095b3b37004 Sunil Goutham 2021-06-15  4346           for (idx = 0; idx < 
req->prof_count[layer]; idx++) {
e8e095b3b37004 Sunil Goutham 2021-06-15  4347                   prof_idx = 
req->prof_idx[layer][idx];
e8e095b3b37004 Sunil Goutham 2021-06-15  4348                   if (prof_idx >= 
ipolicer->band_prof.max ||
e8e095b3b37004 Sunil Goutham 2021-06-15  4349                       
ipolicer->pfvf_map[prof_idx] != pcifunc)
e8e095b3b37004 Sunil Goutham 2021-06-15  4350                           
continue;
e8e095b3b37004 Sunil Goutham 2021-06-15  4351  
e8e095b3b37004 Sunil Goutham 2021-06-15  4352                   /* Clear 
ratelimit aggregation, if any */
e8e095b3b37004 Sunil Goutham 2021-06-15  4353                   if (layer == 
BAND_PROF_LEAF_LAYER &&
e8e095b3b37004 Sunil Goutham 2021-06-15  4354                       
ipolicer->match_id[prof_idx])
e8e095b3b37004 Sunil Goutham 2021-06-15  4355                           
nix_clear_ratelimit_aggr(rvu, nix_hw, prof_idx);
e8e095b3b37004 Sunil Goutham 2021-06-15  4356  
e8e095b3b37004 Sunil Goutham 2021-06-15  4357                   
ipolicer->pfvf_map[prof_idx] = 0x00;
e8e095b3b37004 Sunil Goutham 2021-06-15  4358                   
ipolicer->match_id[prof_idx] = 0;
e8e095b3b37004 Sunil Goutham 2021-06-15  4359                   
rvu_free_rsrc(&ipolicer->band_prof, prof_idx);
e8e095b3b37004 Sunil Goutham 2021-06-15 @4360                   if (idx == 
MAX_BANDPROF_PER_PFFUNC)
e8e095b3b37004 Sunil Goutham 2021-06-15  4361                           break;
e8e095b3b37004 Sunil Goutham 2021-06-15  4362           }
e8e095b3b37004 Sunil Goutham 2021-06-15  4363   }
e8e095b3b37004 Sunil Goutham 2021-06-15  4364   mutex_unlock(&rvu->rsrc_lock);
e8e095b3b37004 Sunil Goutham 2021-06-15  4365   return 0;
e8e095b3b37004 Sunil Goutham 2021-06-15  4366  }
e8e095b3b37004 Sunil Goutham 2021-06-15  4367  

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