| Message ID | 20240922185235.50413-1-kdipendra88@gmail.com (mailing list archive) |
|---|---|
| State | Changes Requested |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | Staging: net: nic: Add error pointer check in otx2_flows.c | expand |
Hi Dipendra, kernel test robot noticed the following build errors: [auto build test ERROR on staging/staging-testing] url: https://github.com/intel-lab-lkp/linux/commits/Dipendra-Khadka/Staging-net-nic-Add-error-pointer-check-in-otx2_flows-c/20240923-025325 base: staging/staging-testing patch link: https://lore.kernel.org/r/20240922185235.50413-1-kdipendra88%40gmail.com patch subject: [PATCH] Staging: net: nic: Add error pointer check in otx2_flows.c config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20240923/202409230844.gM9kqV79-lkp@intel.com/config) compiler: alpha-linux-gcc (GCC) 13.3.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240923/202409230844.gM9kqV79-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202409230844.gM9kqV79-lkp@intel.com/ All errors (new ones prefixed by >>): drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c: In function 'otx2_alloc_mcam_entries': >> drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:124:39: error: 'bfvf' undeclared (first use in this function); did you mean 'pfvf'? 124 | mutex_unlock(&bfvf->mbox.lock); | ^~~~ | pfvf drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:124:39: note: each undeclared identifier is reported only once for each function it appears in drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c: In function 'otx2_mcam_entry_init': drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:207:31: error: 'bfvf' undeclared (first use in this function); did you mean 'pfvf'? 207 | mutex_unlock(&bfvf->mbox.lock); | ^~~~ | pfvf vim +124 drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c 71 72 int otx2_alloc_mcam_entries(struct otx2_nic *pfvf, u16 count) 73 { 74 struct otx2_flow_config *flow_cfg = pfvf->flow_cfg; 75 struct npc_mcam_alloc_entry_req *req; 76 struct npc_mcam_alloc_entry_rsp *rsp; 77 int ent, allocated = 0; 78 79 /* Free current ones and allocate new ones with requested count */ 80 otx2_free_ntuple_mcam_entries(pfvf); 81 82 if (!count) 83 return 0; 84 85 flow_cfg->flow_ent = devm_kmalloc_array(pfvf->dev, count, 86 sizeof(u16), GFP_KERNEL); 87 if (!flow_cfg->flow_ent) { 88 netdev_err(pfvf->netdev, 89 "%s: Unable to allocate memory for flow entries\n", 90 __func__); 91 return -ENOMEM; 92 } 93 94 mutex_lock(&pfvf->mbox.lock); 95 96 /* In a single request a max of NPC_MAX_NONCONTIG_ENTRIES MCAM entries 97 * can only be allocated. 98 */ 99 while (allocated < count) { 100 req = otx2_mbox_alloc_msg_npc_mcam_alloc_entry(&pfvf->mbox); 101 if (!req) 102 goto exit; 103 104 req->contig = false; 105 req->count = (count - allocated) > NPC_MAX_NONCONTIG_ENTRIES ? 106 NPC_MAX_NONCONTIG_ENTRIES : count - allocated; 107 108 /* Allocate higher priority entries for PFs, so that VF's entries 109 * will be on top of PF. 110 */ 111 if (!is_otx2_vf(pfvf->pcifunc)) { 112 req->priority = NPC_MCAM_HIGHER_PRIO; 113 req->ref_entry = flow_cfg->def_ent[0]; 114 } 115 116 /* Send message to AF */ 117 if (otx2_sync_mbox_msg(&pfvf->mbox)) 118 goto exit; 119 120 rsp = (struct npc_mcam_alloc_entry_rsp *)otx2_mbox_get_rsp 121 (&pfvf->mbox.mbox, 0, &req->hdr); 122 123 if (IS_ERR(rsp)) { > 124 mutex_unlock(&bfvf->mbox.lock); 125 return PTR_ERR(rsp); 126 } 127 128 for (ent = 0; ent < rsp->count; ent++) 129 flow_cfg->flow_ent[ent + allocated] = rsp->entry_list[ent]; 130 131 allocated += rsp->count; 132 133 /* If this request is not fulfilled, no need to send 134 * further requests. 135 */ 136 if (rsp->count != req->count) 137 break; 138 } 139 140 /* Multiple MCAM entry alloc requests could result in non-sequential 141 * MCAM entries in the flow_ent[] array. Sort them in an ascending order, 142 * otherwise user installed ntuple filter index and MCAM entry index will 143 * not be in sync. 144 */ 145 if (allocated) 146 sort(&flow_cfg->flow_ent[0], allocated, 147 sizeof(flow_cfg->flow_ent[0]), mcam_entry_cmp, NULL); 148 149 exit: 150 mutex_unlock(&pfvf->mbox.lock); 151 152 flow_cfg->max_flows = allocated; 153 154 if (allocated) { 155 pfvf->flags |= OTX2_FLAG_MCAM_ENTRIES_ALLOC; 156 pfvf->flags |= OTX2_FLAG_NTUPLE_SUPPORT; 157 } 158 159 if (allocated != count) 160 netdev_info(pfvf->netdev, 161 "Unable to allocate %d MCAM entries, got only %d\n", 162 count, allocated); 163 return allocated; 164 } 165 EXPORT_SYMBOL(otx2_alloc_mcam_entries); 166
Hi Dipendra,
kernel test robot noticed the following build errors:
[auto build test ERROR on staging/staging-testing]
url: https://github.com/intel-lab-lkp/linux/commits/Dipendra-Khadka/Staging-net-nic-Add-error-pointer-check-in-otx2_flows-c/20240923-025325
base: staging/staging-testing
patch link: https://lore.kernel.org/r/20240922185235.50413-1-kdipendra88%40gmail.com
patch subject: [PATCH] Staging: net: nic: Add error pointer check in otx2_flows.c
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20240923/202409231056.4rLGE5NG-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project 8663a75fa2f31299ab8d1d90288d9df92aadee88)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240923/202409231056.4rLGE5NG-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202409231056.4rLGE5NG-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/tcp.h:17:
In file included from include/linux/skbuff.h:17:
In file included from include/linux/bvec.h:10:
In file included from include/linux/highmem.h:10:
In file included from include/linux/mm.h:2228:
include/linux/vmstat.h:500:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
500 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
501 | item];
| ~~~~
include/linux/vmstat.h:507:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
507 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
508 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:514:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
514 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:519:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
519 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
520 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:528:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
528 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
529 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
In file included from drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:8:
In file included from include/net/ipv6.h:12:
In file included from include/linux/ipv6.h:101:
In file included from include/linux/tcp.h:17:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:8:
In file included from include/net/ipv6.h:12:
In file included from include/linux/ipv6.h:101:
In file included from include/linux/tcp.h:17:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:8:
In file included from include/net/ipv6.h:12:
In file included from include/linux/ipv6.h:101:
In file included from include/linux/tcp.h:17:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:124:18: error: use of undeclared identifier 'bfvf'; did you mean 'pfvf'?
124 | mutex_unlock(&bfvf->mbox.lock);
| ^~~~
| pfvf
drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:72:46: note: 'pfvf' declared here
72 | int otx2_alloc_mcam_entries(struct otx2_nic *pfvf, u16 count)
| ^
drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:207:17: error: use of undeclared identifier 'bfvf'; did you mean 'pfvf'?
207 | mutex_unlock(&bfvf->mbox.lock);
| ^~~~
| pfvf
drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:167:43: note: 'pfvf' declared here
167 | int otx2_mcam_entry_init(struct otx2_nic *pfvf)
| ^
17 warnings and 2 errors generated.
vim +124 drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c
71
72 int otx2_alloc_mcam_entries(struct otx2_nic *pfvf, u16 count)
73 {
74 struct otx2_flow_config *flow_cfg = pfvf->flow_cfg;
75 struct npc_mcam_alloc_entry_req *req;
76 struct npc_mcam_alloc_entry_rsp *rsp;
77 int ent, allocated = 0;
78
79 /* Free current ones and allocate new ones with requested count */
80 otx2_free_ntuple_mcam_entries(pfvf);
81
82 if (!count)
83 return 0;
84
85 flow_cfg->flow_ent = devm_kmalloc_array(pfvf->dev, count,
86 sizeof(u16), GFP_KERNEL);
87 if (!flow_cfg->flow_ent) {
88 netdev_err(pfvf->netdev,
89 "%s: Unable to allocate memory for flow entries\n",
90 __func__);
91 return -ENOMEM;
92 }
93
94 mutex_lock(&pfvf->mbox.lock);
95
96 /* In a single request a max of NPC_MAX_NONCONTIG_ENTRIES MCAM entries
97 * can only be allocated.
98 */
99 while (allocated < count) {
100 req = otx2_mbox_alloc_msg_npc_mcam_alloc_entry(&pfvf->mbox);
101 if (!req)
102 goto exit;
103
104 req->contig = false;
105 req->count = (count - allocated) > NPC_MAX_NONCONTIG_ENTRIES ?
106 NPC_MAX_NONCONTIG_ENTRIES : count - allocated;
107
108 /* Allocate higher priority entries for PFs, so that VF's entries
109 * will be on top of PF.
110 */
111 if (!is_otx2_vf(pfvf->pcifunc)) {
112 req->priority = NPC_MCAM_HIGHER_PRIO;
113 req->ref_entry = flow_cfg->def_ent[0];
114 }
115
116 /* Send message to AF */
117 if (otx2_sync_mbox_msg(&pfvf->mbox))
118 goto exit;
119
120 rsp = (struct npc_mcam_alloc_entry_rsp *)otx2_mbox_get_rsp
121 (&pfvf->mbox.mbox, 0, &req->hdr);
122
123 if (IS_ERR(rsp)) {
> 124 mutex_unlock(&bfvf->mbox.lock);
125 return PTR_ERR(rsp);
126 }
127
128 for (ent = 0; ent < rsp->count; ent++)
129 flow_cfg->flow_ent[ent + allocated] = rsp->entry_list[ent];
130
131 allocated += rsp->count;
132
133 /* If this request is not fulfilled, no need to send
134 * further requests.
135 */
136 if (rsp->count != req->count)
137 break;
138 }
139
140 /* Multiple MCAM entry alloc requests could result in non-sequential
141 * MCAM entries in the flow_ent[] array. Sort them in an ascending order,
142 * otherwise user installed ntuple filter index and MCAM entry index will
143 * not be in sync.
144 */
145 if (allocated)
146 sort(&flow_cfg->flow_ent[0], allocated,
147 sizeof(flow_cfg->flow_ent[0]), mcam_entry_cmp, NULL);
148
149 exit:
150 mutex_unlock(&pfvf->mbox.lock);
151
152 flow_cfg->max_flows = allocated;
153
154 if (allocated) {
155 pfvf->flags |= OTX2_FLAG_MCAM_ENTRIES_ALLOC;
156 pfvf->flags |= OTX2_FLAG_NTUPLE_SUPPORT;
157 }
158
159 if (allocated != count)
160 netdev_info(pfvf->netdev,
161 "Unable to allocate %d MCAM entries, got only %d\n",
162 count, allocated);
163 return allocated;
164 }
165 EXPORT_SYMBOL(otx2_alloc_mcam_entries);
166
On Sun, Sep 22, 2024 at 06:52:35PM +0000, Dipendra Khadka wrote: > Smatch reported following: > ''' > drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:123 otx2_alloc_mcam_entries() error: 'rsp' dereferencing possible ERR_PTR() > drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:201 otx2_mcam_entry_init() error: 'rsp' dereferencing possible ERR_PTR() > drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:236 otx2_mcam_entry_init() error: 'frsp' dereferencing possible ERR_PTR() > ''' > > Adding error pointer check after calling otx2_mbox_get_rsp. > > Signed-off-by: Dipendra Khadka <kdipendra88@gmail.com> Hi Dipendra, As noted by Andrew Lunn in relation to another patch [1], this driver isn't in Staging so the subject is not correct. And moreover, as Andrew suggested, please take a look at [2]. [1] https://lore.kernel.org/all/13fbb6c3-661f-477a-b33b-99303cd11622@lunn.ch/ [2] https://www.kernel.org/doc/html/latest/process/maintainer-netdev.html > --- > .../ethernet/marvell/octeontx2/nic/otx2_flows.c | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > > diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c > index 98c31a16c70b..4b61236c7c41 100644 > --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c > +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c > @@ -120,6 +120,11 @@ int otx2_alloc_mcam_entries(struct otx2_nic *pfvf, u16 count) > rsp = (struct npc_mcam_alloc_entry_rsp *)otx2_mbox_get_rsp > (&pfvf->mbox.mbox, 0, &req->hdr); nit: No blank line here please. Similarly in the other hunks of this patch. > > + if (IS_ERR(rsp)) { > + mutex_unlock(&bfvf->mbox.lock); This doesn't compile as bfvf doesn't exit in this context. > + return PTR_ERR(rsp); Looking at error handling elsewhere in the same loop, perhaps this is appropriate instead of returning. goto exit; > + } > + > for (ent = 0; ent < rsp->count; ent++) > flow_cfg->flow_ent[ent + allocated] = rsp->entry_list[ent]; > ...
Hi, Thank you for the response.I had already sent the v2 patch. I will send v3 addressing all the issues. On Mon, 23 Sept 2024 at 21:41, Simon Horman <horms@kernel.org> wrote: > > On Sun, Sep 22, 2024 at 06:52:35PM +0000, Dipendra Khadka wrote: > > Smatch reported following: > > ''' > > drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:123 otx2_alloc_mcam_entries() error: 'rsp' dereferencing possible ERR_PTR() > > drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:201 otx2_mcam_entry_init() error: 'rsp' dereferencing possible ERR_PTR() > > drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:236 otx2_mcam_entry_init() error: 'frsp' dereferencing possible ERR_PTR() > > ''' > > > > Adding error pointer check after calling otx2_mbox_get_rsp. > > > > Signed-off-by: Dipendra Khadka <kdipendra88@gmail.com> > > Hi Dipendra, > > As noted by Andrew Lunn in relation to another patch [1], > this driver isn't in Staging so the subject is not correct. > And moreover, as Andrew suggested, please take a look at [2]. > > [1] https://lore.kernel.org/all/13fbb6c3-661f-477a-b33b-99303cd11622@lunn.ch/ > [2] https://www.kernel.org/doc/html/latest/process/maintainer-netdev.html > > > --- > > .../ethernet/marvell/octeontx2/nic/otx2_flows.c | 15 +++++++++++++++ > > 1 file changed, 15 insertions(+) > > > > diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c > > index 98c31a16c70b..4b61236c7c41 100644 > > --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c > > +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c > > @@ -120,6 +120,11 @@ int otx2_alloc_mcam_entries(struct otx2_nic *pfvf, u16 count) > > rsp = (struct npc_mcam_alloc_entry_rsp *)otx2_mbox_get_rsp > > (&pfvf->mbox.mbox, 0, &req->hdr); > > nit: No blank line here please. > Similarly in the other hunks of this patch. > > > > > + if (IS_ERR(rsp)) { > > + mutex_unlock(&bfvf->mbox.lock); > > This doesn't compile as bfvf doesn't exit in this context. > > > + return PTR_ERR(rsp); > > Looking at error handling elsewhere in the same loop, perhaps this > is appropriate instead of returning. > > goto exit; > > > + } > > + > > for (ent = 0; ent < rsp->count; ent++) > > flow_cfg->flow_ent[ent + allocated] = rsp->entry_list[ent]; > > > > ... Best Regards, Dipendra
diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c index 98c31a16c70b..4b61236c7c41 100644 --- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c +++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c @@ -120,6 +120,11 @@ int otx2_alloc_mcam_entries(struct otx2_nic *pfvf, u16 count) rsp = (struct npc_mcam_alloc_entry_rsp *)otx2_mbox_get_rsp (&pfvf->mbox.mbox, 0, &req->hdr); + if (IS_ERR(rsp)) { + mutex_unlock(&bfvf->mbox.lock); + return PTR_ERR(rsp); + } + for (ent = 0; ent < rsp->count; ent++) flow_cfg->flow_ent[ent + allocated] = rsp->entry_list[ent]; @@ -198,6 +203,11 @@ int otx2_mcam_entry_init(struct otx2_nic *pfvf) rsp = (struct npc_mcam_alloc_entry_rsp *)otx2_mbox_get_rsp (&pfvf->mbox.mbox, 0, &req->hdr); + if (IS_ERR(rsp)) { + mutex_unlock(&bfvf->mbox.lock); + return PTR_ERR(rsp); + } + if (rsp->count != req->count) { netdev_info(pfvf->netdev, "Unable to allocate MCAM entries for ucast, vlan and vf_vlan\n"); @@ -233,6 +243,11 @@ int otx2_mcam_entry_init(struct otx2_nic *pfvf) frsp = (struct npc_get_field_status_rsp *)otx2_mbox_get_rsp (&pfvf->mbox.mbox, 0, &freq->hdr); + if (IS_ERR(frsp)) { + mutex_unlock(&pfvf->mbox.lock); + return PTR_ERR(frsp); + } + if (frsp->enable) { pfvf->flags |= OTX2_FLAG_RX_VLAN_SUPPORT; pfvf->flags |= OTX2_FLAG_VF_VLAN_SUPPORT;
Smatch reported following: ''' drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:123 otx2_alloc_mcam_entries() error: 'rsp' dereferencing possible ERR_PTR() drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:201 otx2_mcam_entry_init() error: 'rsp' dereferencing possible ERR_PTR() drivers/net/ethernet/marvell/octeontx2/nic/otx2_flows.c:236 otx2_mcam_entry_init() error: 'frsp' dereferencing possible ERR_PTR() ''' Adding error pointer check after calling otx2_mbox_get_rsp. Signed-off-by: Dipendra Khadka <kdipendra88@gmail.com> --- .../ethernet/marvell/octeontx2/nic/otx2_flows.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)