From 6396bb221514d2876fd6dc0aa2a1f240d99b37bb Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Tue, 12 Jun 2018 14:03:40 -0700 Subject: treewide: kzalloc() -> kcalloc() The kzalloc() function has a 2-factor argument form, kcalloc(). This patch replaces cases of: kzalloc(a * b, gfp) with: kcalloc(a * b, gfp) as well as handling cases of: kzalloc(a * b * c, gfp) with: kzalloc(array3_size(a, b, c), gfp) as it's slightly less ugly than: kzalloc_array(array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: kzalloc(4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ type TYPE; expression THING, E; @@ ( kzalloc( - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | kzalloc( - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression COUNT; typedef u8; typedef __u8; @@ ( kzalloc( - sizeof(u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(__u8) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(unsigned char) * (COUNT) + COUNT , ...) | kzalloc( - sizeof(u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(__u8) * COUNT + COUNT , ...) | kzalloc( - sizeof(char) * COUNT + COUNT , ...) | kzalloc( - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ identifier SIZE, COUNT; @@ - kzalloc + kcalloc ( - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( kzalloc( - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | kzalloc( - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( kzalloc( - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | kzalloc( - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ identifier STRIDE, SIZE, COUNT; @@ ( kzalloc( - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | kzalloc( - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression E1, E2, E3; constant C1, C2, C3; @@ ( kzalloc(C1 * C2 * C3, ...) | kzalloc( - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | kzalloc( - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | kzalloc( - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( kzalloc(sizeof(THING) * C2, ...) | kzalloc(sizeof(TYPE) * C2, ...) | kzalloc(C1 * C2 * C3, ...) | kzalloc(C1 * C2, ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - kzalloc + kcalloc ( - (E1) * E2 + E1, E2 , ...) | - kzalloc + kcalloc ( - (E1) * (E2) + E1, E2 , ...) | - kzalloc + kcalloc ( - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook --- drivers/scsi/be2iscsi/be_main.c | 40 ++++++++++++++++++++++------------------ 1 file changed, 22 insertions(+), 18 deletions(-) (limited to 'drivers/scsi/be2iscsi') diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index d981c16cd611..818d185d63f0 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -2467,8 +2467,8 @@ static int beiscsi_alloc_mem(struct beiscsi_hba *phba) /* Allocate memory for wrb_context */ phwi_ctrlr = phba->phwi_ctrlr; - phwi_ctrlr->wrb_context = kzalloc(sizeof(struct hwi_wrb_context) * - phba->params.cxns_per_ctrl, + phwi_ctrlr->wrb_context = kcalloc(phba->params.cxns_per_ctrl, + sizeof(struct hwi_wrb_context), GFP_KERNEL); if (!phwi_ctrlr->wrb_context) { kfree(phba->phwi_ctrlr); @@ -2621,8 +2621,8 @@ static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba) /* Allocate memory for WRBQ */ phwi_ctxt = phwi_ctrlr->phwi_ctxt; - phwi_ctxt->be_wrbq = kzalloc(sizeof(struct be_queue_info) * - phba->params.cxns_per_ctrl, + phwi_ctxt->be_wrbq = kcalloc(phba->params.cxns_per_ctrl, + sizeof(struct be_queue_info), GFP_KERNEL); if (!phwi_ctxt->be_wrbq) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, @@ -2633,16 +2633,18 @@ static int beiscsi_init_wrb_handle(struct beiscsi_hba *phba) for (index = 0; index < phba->params.cxns_per_ctrl; index++) { pwrb_context = &phwi_ctrlr->wrb_context[index]; pwrb_context->pwrb_handle_base = - kzalloc(sizeof(struct wrb_handle *) * - phba->params.wrbs_per_cxn, GFP_KERNEL); + kcalloc(phba->params.wrbs_per_cxn, + sizeof(struct wrb_handle *), + GFP_KERNEL); if (!pwrb_context->pwrb_handle_base) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Mem Alloc Failed. Failing to load\n"); goto init_wrb_hndl_failed; } pwrb_context->pwrb_handle_basestd = - kzalloc(sizeof(struct wrb_handle *) * - phba->params.wrbs_per_cxn, GFP_KERNEL); + kcalloc(phba->params.wrbs_per_cxn, + sizeof(struct wrb_handle *), + GFP_KERNEL); if (!pwrb_context->pwrb_handle_basestd) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Mem Alloc Failed. Failing to load\n"); @@ -3896,18 +3898,18 @@ static int beiscsi_init_sgl_handle(struct beiscsi_hba *phba) mem_descr_sglh = phba->init_mem; mem_descr_sglh += HWI_MEM_SGLH; if (1 == mem_descr_sglh->num_elements) { - phba->io_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) * - phba->params.ios_per_ctrl, + phba->io_sgl_hndl_base = kcalloc(phba->params.ios_per_ctrl, + sizeof(struct sgl_handle *), GFP_KERNEL); if (!phba->io_sgl_hndl_base) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Mem Alloc Failed. Failing to load\n"); return -ENOMEM; } - phba->eh_sgl_hndl_base = kzalloc(sizeof(struct sgl_handle *) * - (phba->params.icds_per_ctrl - - phba->params.ios_per_ctrl), - GFP_KERNEL); + phba->eh_sgl_hndl_base = + kcalloc(phba->params.icds_per_ctrl - + phba->params.ios_per_ctrl, + sizeof(struct sgl_handle *), GFP_KERNEL); if (!phba->eh_sgl_hndl_base) { kfree(phba->io_sgl_hndl_base); beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, @@ -4034,8 +4036,9 @@ static int hba_setup_cid_tbls(struct beiscsi_hba *phba) phba->cid_array_info[ulp_num] = ptr_cid_info; } } - phba->ep_array = kzalloc(sizeof(struct iscsi_endpoint *) * - phba->params.cxns_per_ctrl, GFP_KERNEL); + phba->ep_array = kcalloc(phba->params.cxns_per_ctrl, + sizeof(struct iscsi_endpoint *), + GFP_KERNEL); if (!phba->ep_array) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Failed to allocate memory in " @@ -4045,8 +4048,9 @@ static int hba_setup_cid_tbls(struct beiscsi_hba *phba) goto free_memory; } - phba->conn_table = kzalloc(sizeof(struct beiscsi_conn *) * - phba->params.cxns_per_ctrl, GFP_KERNEL); + phba->conn_table = kcalloc(phba->params.cxns_per_ctrl, + sizeof(struct beiscsi_conn *), + GFP_KERNEL); if (!phba->conn_table) { beiscsi_log(phba, KERN_ERR, BEISCSI_LOG_INIT, "BM_%d : Failed to allocate memory in" -- cgit v1.2.3