From a4de8356b68e54149ebdbe6e748e2726152b650c Mon Sep 17 00:00:00 2001 From: James Smart Date: Sun, 11 Sep 2022 15:15:04 -0700 Subject: [PATCH] scsi: lpfc: Fix various issues reported by tools This patch fixes below Smatch reported issues: 1. lpfc_hbadisc.c:3020 lpfc_mbx_cmpl_fcf_rr_read_fcf_rec() error: uninitialized symbol 'vlan_id'. 2. lpfc_hbadisc.c:3121 lpfc_mbx_cmpl_read_fcf_rec() error: uninitialized symbol 'vlan_id'. 3. lpfc_init.c:335 lpfc_dump_wakeup_param_cmpl() warn: always true condition '(prg->dist < 4) => (0-3 < 4)' 4. lpfc_init.c:2419 lpfc_parse_vpd() warn: inconsistent indenting. 5. lpfc_init.c:13248 lpfc_sli4_enable_msi() warn: 'phba->pcidev->irq' 2147483648 can't fit into 65535 'eqhdl->irq' 6. lpfc_debugfs.c:5300 lpfc_idiag_extacc_avail_get() error: uninitialized symbol 'ext_cnt' 7. lpfc_debugfs.c:5300 lpfc_idiag_extacc_avail_get() error: uninitialized symbol 'ext_size' 8. lpfc_vmid.c:248 lpfc_vmid_get_appid() warn: sleeping in atomic context. 9. lpfc_init.c:8342 lpfc_sli4_driver_resource_setup() warn: missing error code 'rc'. 10. lpfc_init.c:13573 lpfc_sli4_hba_unset() warn: variable dereferenced before check 'phba->pport' (see line 13546) 11. lpfc_auth.c:1923 lpfc_auth_handle_dhchap_reply() error: double free of 'hash_value' Fixes: 1. Initialize vlan_id to LPFC_FCOE_NULL_VID. 2. Initialize vlan_id to LPFC_FCOE_NULL_VID. 3. prg->dist is a 2 bit field. Its value can only be between 0-3. Remove redundent check 'if (prg->dist < 4)'. 4. Fix inconsistent indenting. Moved logic into helper function lpfc_fill_vpd(). 5. Define 'eqhdl->irq' as int value as pci_irq_vector() returns int. Also, check for return value of pci_irq_vector() and log message in case of failure. 6. Initialize 'ext_cnt' to 0. 7. Initialize 'ext_size' to 0. 8. Use alloc_percpu_gfp() with GFP_ATOMIC flag. 9. 'rc' was not updated when dma_pool_create() fails. Update 'rc = -ENOMEM' when dma_pool_create() fails before calling goto statement. 10. Add check for 'phba->pport' in lpfc_cpuhp_remove(). 11. Initialize 'hash_value' to NULL, same like 'aug_chal' variable. Link: https://lore.kernel.org/r/20220911221505.117655-13-jsmart2021@gmail.com Co-developed-by: Justin Tee Signed-off-by: Justin Tee Signed-off-by: James Smart Signed-off-by: Martin K. Petersen --- drivers/scsi/lpfc/lpfc_debugfs.c | 2 +- drivers/scsi/lpfc/lpfc_hbadisc.c | 4 +- drivers/scsi/lpfc/lpfc_init.c | 249 ++++++++++++++++++++++----------------- drivers/scsi/lpfc/lpfc_sli.c | 3 + drivers/scsi/lpfc/lpfc_sli4.h | 4 +- drivers/scsi/lpfc/lpfc_vmid.c | 4 +- 6 files changed, 148 insertions(+), 118 deletions(-) diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c index e37b028..f5252e4 100644 --- a/drivers/scsi/lpfc/lpfc_debugfs.c +++ b/drivers/scsi/lpfc/lpfc_debugfs.c @@ -5156,7 +5156,7 @@ error_out: static int lpfc_idiag_extacc_avail_get(struct lpfc_hba *phba, char *pbuffer, int len) { - uint16_t ext_cnt, ext_size; + uint16_t ext_cnt = 0, ext_size = 0; len += scnprintf(pbuffer+len, LPFC_EXT_ACC_BUF_SIZE-len, "\nAvailable Extents Information:\n"); diff --git a/drivers/scsi/lpfc/lpfc_hbadisc.c b/drivers/scsi/lpfc/lpfc_hbadisc.c index 2b79351..c7f834b 100644 --- a/drivers/scsi/lpfc/lpfc_hbadisc.c +++ b/drivers/scsi/lpfc/lpfc_hbadisc.c @@ -2970,7 +2970,7 @@ lpfc_mbx_cmpl_fcf_rr_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) uint32_t boot_flag, addr_mode; uint16_t next_fcf_index, fcf_index; uint16_t current_fcf_index; - uint16_t vlan_id; + uint16_t vlan_id = LPFC_FCOE_NULL_VID; int rc; /* If link state is not up, stop the roundrobin failover process */ @@ -3075,7 +3075,7 @@ lpfc_mbx_cmpl_read_fcf_rec(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq) struct fcf_record *new_fcf_record; uint32_t boot_flag, addr_mode; uint16_t fcf_index, next_fcf_index; - uint16_t vlan_id; + uint16_t vlan_id = LPFC_FCOE_NULL_VID; int rc; /* If link state is not up, no need to proceed */ diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c index 511220a..844dc8a 100644 --- a/drivers/scsi/lpfc/lpfc_init.c +++ b/drivers/scsi/lpfc/lpfc_init.c @@ -325,8 +325,7 @@ lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq) prog_id_word = pmboxq->u.mb.un.varWords[7]; /* Decode the Option rom version word to a readable string */ - if (prg->dist < 4) - dist = dist_char[prg->dist]; + dist = dist_char[prg->dist]; if ((prg->dist == 3) && (prg->num == 0)) snprintf(phba->OptionROMVersion, 32, "%d.%d%d", @@ -2258,6 +2257,101 @@ lpfc_handle_latt_err_exit: return; } +static void +lpfc_fill_vpd(struct lpfc_hba *phba, uint8_t *vpd, int length, int *pindex) +{ + int i, j; + + while (length > 0) { + /* Look for Serial Number */ + if ((vpd[*pindex] == 'S') && (vpd[*pindex + 1] == 'N')) { + *pindex += 2; + i = vpd[*pindex]; + *pindex += 1; + j = 0; + length -= (3+i); + while (i--) { + phba->SerialNumber[j++] = vpd[(*pindex)++]; + if (j == 31) + break; + } + phba->SerialNumber[j] = 0; + continue; + } else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '1')) { + phba->vpd_flag |= VPD_MODEL_DESC; + *pindex += 2; + i = vpd[*pindex]; + *pindex += 1; + j = 0; + length -= (3+i); + while (i--) { + phba->ModelDesc[j++] = vpd[(*pindex)++]; + if (j == 255) + break; + } + phba->ModelDesc[j] = 0; + continue; + } else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '2')) { + phba->vpd_flag |= VPD_MODEL_NAME; + *pindex += 2; + i = vpd[*pindex]; + *pindex += 1; + j = 0; + length -= (3+i); + while (i--) { + phba->ModelName[j++] = vpd[(*pindex)++]; + if (j == 79) + break; + } + phba->ModelName[j] = 0; + continue; + } else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '3')) { + phba->vpd_flag |= VPD_PROGRAM_TYPE; + *pindex += 2; + i = vpd[*pindex]; + *pindex += 1; + j = 0; + length -= (3+i); + while (i--) { + phba->ProgramType[j++] = vpd[(*pindex)++]; + if (j == 255) + break; + } + phba->ProgramType[j] = 0; + continue; + } else if ((vpd[*pindex] == 'V') && (vpd[*pindex + 1] == '4')) { + phba->vpd_flag |= VPD_PORT; + *pindex += 2; + i = vpd[*pindex]; + *pindex += 1; + j = 0; + length -= (3 + i); + while (i--) { + if ((phba->sli_rev == LPFC_SLI_REV4) && + (phba->sli4_hba.pport_name_sta == + LPFC_SLI4_PPNAME_GET)) { + j++; + (*pindex)++; + } else + phba->Port[j++] = vpd[(*pindex)++]; + if (j == 19) + break; + } + if ((phba->sli_rev != LPFC_SLI_REV4) || + (phba->sli4_hba.pport_name_sta == + LPFC_SLI4_PPNAME_NON)) + phba->Port[j] = 0; + continue; + } else { + *pindex += 2; + i = vpd[*pindex]; + *pindex += 1; + *pindex += i; + length -= (3 + i); + } + } +} + /** * lpfc_parse_vpd - Parse VPD (Vital Product Data) * @phba: pointer to lpfc hba data structure. @@ -2277,7 +2371,7 @@ lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len) { uint8_t lenlo, lenhi; int Length; - int i, j; + int i; int finished = 0; int index = 0; @@ -2310,101 +2404,10 @@ lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len) Length = ((((unsigned short)lenhi) << 8) + lenlo); if (Length > len - index) Length = len - index; - while (Length > 0) { - /* Look for Serial Number */ - if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) { - index += 2; - i = vpd[index]; - index += 1; - j = 0; - Length -= (3+i); - while(i--) { - phba->SerialNumber[j++] = vpd[index++]; - if (j == 31) - break; - } - phba->SerialNumber[j] = 0; - continue; - } - else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) { - phba->vpd_flag |= VPD_MODEL_DESC; - index += 2; - i = vpd[index]; - index += 1; - j = 0; - Length -= (3+i); - while(i--) { - phba->ModelDesc[j++] = vpd[index++]; - if (j == 255) - break; - } - phba->ModelDesc[j] = 0; - continue; - } - else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) { - phba->vpd_flag |= VPD_MODEL_NAME; - index += 2; - i = vpd[index]; - index += 1; - j = 0; - Length -= (3+i); - while(i--) { - phba->ModelName[j++] = vpd[index++]; - if (j == 79) - break; - } - phba->ModelName[j] = 0; - continue; - } - else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) { - phba->vpd_flag |= VPD_PROGRAM_TYPE; - index += 2; - i = vpd[index]; - index += 1; - j = 0; - Length -= (3+i); - while(i--) { - phba->ProgramType[j++] = vpd[index++]; - if (j == 255) - break; - } - phba->ProgramType[j] = 0; - continue; - } - else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) { - phba->vpd_flag |= VPD_PORT; - index += 2; - i = vpd[index]; - index += 1; - j = 0; - Length -= (3+i); - while(i--) { - if ((phba->sli_rev == LPFC_SLI_REV4) && - (phba->sli4_hba.pport_name_sta == - LPFC_SLI4_PPNAME_GET)) { - j++; - index++; - } else - phba->Port[j++] = vpd[index++]; - if (j == 19) - break; - } - if ((phba->sli_rev != LPFC_SLI_REV4) || - (phba->sli4_hba.pport_name_sta == - LPFC_SLI4_PPNAME_NON)) - phba->Port[j] = 0; - continue; - } - else { - index += 2; - i = vpd[index]; - index += 1; - index += i; - Length -= (3 + i); - } - } - finished = 0; - break; + + lpfc_fill_vpd(phba, vpd, Length, &index); + finished = 0; + break; case 0x78: finished = 1; break; @@ -8304,8 +8307,10 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba) &phba->pcidev->dev, phba->cfg_sg_dma_buf_size, i, 0); - if (!phba->lpfc_sg_dma_buf_pool) + if (!phba->lpfc_sg_dma_buf_pool) { + rc = -ENOMEM; goto out_free_bsmbx; + } phba->lpfc_cmd_rsp_buf_pool = dma_pool_create("lpfc_cmd_rsp_buf_pool", @@ -8313,8 +8318,10 @@ lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba) sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp), i, 0); - if (!phba->lpfc_cmd_rsp_buf_pool) + if (!phba->lpfc_cmd_rsp_buf_pool) { + rc = -ENOMEM; goto out_free_sg_dma_buf; + } mempool_free(mboxq, phba->mbox_mem_pool); @@ -12402,7 +12409,7 @@ lpfc_hba_eq_hdl_array_init(struct lpfc_hba *phba) for (i = 0; i < phba->cfg_irq_chann; i++) { eqhdl = lpfc_get_eq_hdl(i); - eqhdl->irq = LPFC_VECTOR_MAP_EMPTY; + eqhdl->irq = LPFC_IRQ_EMPTY; eqhdl->phba = phba; } } @@ -12775,7 +12782,7 @@ static void __lpfc_cpuhp_remove(struct lpfc_hba *phba) static void lpfc_cpuhp_remove(struct lpfc_hba *phba) { - if (phba->pport->fc_flag & FC_OFFLINE_MODE) + if (phba->pport && (phba->pport->fc_flag & FC_OFFLINE_MODE)) return; __lpfc_cpuhp_remove(phba); @@ -13039,9 +13046,17 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba) LPFC_DRIVER_HANDLER_NAME"%d", index); eqhdl->idx = index; - rc = request_irq(pci_irq_vector(phba->pcidev, index), - &lpfc_sli4_hba_intr_handler, 0, - name, eqhdl); + rc = pci_irq_vector(phba->pcidev, index); + if (rc < 0) { + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "0489 MSI-X fast-path (%d) " + "pci_irq_vec failed (%d)\n", index, rc); + goto cfg_fail_out; + } + eqhdl->irq = rc; + + rc = request_irq(eqhdl->irq, &lpfc_sli4_hba_intr_handler, 0, + name, eqhdl); if (rc) { lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, "0486 MSI-X fast-path (%d) " @@ -13049,8 +13064,6 @@ lpfc_sli4_enable_msix(struct lpfc_hba *phba) goto cfg_fail_out; } - eqhdl->irq = pci_irq_vector(phba->pcidev, index); - if (aff_mask) { /* If found a neighboring online cpu, set affinity */ if (cpu_select < nr_cpu_ids) @@ -13167,7 +13180,14 @@ lpfc_sli4_enable_msi(struct lpfc_hba *phba) } eqhdl = lpfc_get_eq_hdl(0); - eqhdl->irq = pci_irq_vector(phba->pcidev, 0); + rc = pci_irq_vector(phba->pcidev, 0); + if (rc < 0) { + pci_free_irq_vectors(phba->pcidev); + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "0496 MSI pci_irq_vec failed (%d)\n", rc); + return rc; + } + eqhdl->irq = rc; cpu = cpumask_first(cpu_present_mask); lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, cpu); @@ -13194,8 +13214,8 @@ lpfc_sli4_enable_msi(struct lpfc_hba *phba) * MSI-X -> MSI -> IRQ. * * Return codes - * 0 - successful - * other values - error + * Interrupt mode (2, 1, 0) - successful + * LPFC_INTR_ERROR - error **/ static uint32_t lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode) @@ -13240,7 +13260,14 @@ lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode) intr_mode = 0; eqhdl = lpfc_get_eq_hdl(0); - eqhdl->irq = pci_irq_vector(phba->pcidev, 0); + retval = pci_irq_vector(phba->pcidev, 0); + if (retval < 0) { + lpfc_printf_log(phba, KERN_WARNING, LOG_INIT, + "0502 INTR pci_irq_vec failed (%d)\n", + retval); + return LPFC_INTR_ERROR; + } + eqhdl->irq = retval; cpu = cpumask_first(cpu_present_mask); lpfc_assign_eq_map_info(phba, 0, LPFC_CPU_FIRST_IRQ, diff --git a/drivers/scsi/lpfc/lpfc_sli.c b/drivers/scsi/lpfc/lpfc_sli.c index 06987d4..99d06dc 100644 --- a/drivers/scsi/lpfc/lpfc_sli.c +++ b/drivers/scsi/lpfc/lpfc_sli.c @@ -6215,6 +6215,9 @@ lpfc_sli4_get_avail_extnt_rsrc(struct lpfc_hba *phba, uint16_t type, struct lpfc_mbx_get_rsrc_extent_info *rsrc_info; LPFC_MBOXQ_t *mbox; + *extnt_count = 0; + *extnt_size = 0; + mbox = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL); if (!mbox) return -ENOMEM; diff --git a/drivers/scsi/lpfc/lpfc_sli4.h b/drivers/scsi/lpfc/lpfc_sli4.h index 1ddad5b..cbb1aa1 100644 --- a/drivers/scsi/lpfc/lpfc_sli4.h +++ b/drivers/scsi/lpfc/lpfc_sli4.h @@ -489,7 +489,7 @@ struct lpfc_hba; #define LPFC_SLI4_HANDLER_NAME_SZ 16 struct lpfc_hba_eq_hdl { uint32_t idx; - uint16_t irq; + int irq; char handler_name[LPFC_SLI4_HANDLER_NAME_SZ]; struct lpfc_hba *phba; struct lpfc_queue *eq; @@ -611,6 +611,8 @@ struct lpfc_vector_map_info { }; #define LPFC_VECTOR_MAP_EMPTY 0xffff +#define LPFC_IRQ_EMPTY 0xffffffff + /* Multi-XRI pool */ #define XRI_BATCH 8 diff --git a/drivers/scsi/lpfc/lpfc_vmid.c b/drivers/scsi/lpfc/lpfc_vmid.c index f64ced0..ed1d7f7 100644 --- a/drivers/scsi/lpfc/lpfc_vmid.c +++ b/drivers/scsi/lpfc/lpfc_vmid.c @@ -245,9 +245,7 @@ int lpfc_vmid_get_appid(struct lpfc_vport *vport, char *uuid, /* allocate the per cpu variable for holding */ /* the last access time stamp only if VMID is enabled */ if (!vmp->last_io_time) - vmp->last_io_time = __alloc_percpu(sizeof(u64), - __alignof__(struct - lpfc_vmid)); + vmp->last_io_time = alloc_percpu_gfp(u64, GFP_ATOMIC); if (!vmp->last_io_time) { hash_del(&vmp->hnode); vmp->flag = LPFC_VMID_SLOT_FREE; -- 2.7.4