From: Gustavo A. R. Silva Date: Mon, 15 Aug 2022 21:49:38 +0000 (-0500) Subject: scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_PD_CFG... X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=ee92366a8439856136368a106e6e08ffa8306a1e;p=linux.git scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_PD_CFG_SEQ_NUM_SYNC One-element arrays are deprecated, and we are replacing them with flexible array members instead. So, replace one-element array with flexible-array member in struct MR_PD_CFG_SEQ_NUM_SYNC and refactor the rest of the code accordingly. This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines on memcpy() and help us make progress towards globally enabling -fstrict-flex-arrays [0]. Link: https://github.com/KSPP/linux/issues/79 Link: https://github.com/KSPP/linux/issues/109 Link: Link: https://reviews.llvm.org/D126864 [0] Link: https://lore.kernel.org/r/78e9261591db072b67fcf49f0216d7046a67ca6d.1660592640.git.gustavoars@kernel.org Reviewed-by: Kees Cook Signed-off-by: Gustavo A. R. Silva Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index 43b97376f4e13..59703ef8b1ade 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -5793,7 +5793,7 @@ megasas_setup_jbod_map(struct megasas_instance *instance) u32 pd_seq_map_sz; pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + - (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1)); + (sizeof(struct MR_PD_CFG_SEQ) * MAX_PHYSICAL_DEVICES); instance->use_seqnum_jbod_fp = instance->support_seqnum_jbod_fp; @@ -8046,7 +8046,7 @@ skip_firing_dcmds: megasas_release_fusion(instance); pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) + (sizeof(struct MR_PD_CFG_SEQ) * - (MAX_PHYSICAL_DEVICES - 1)); + MAX_PHYSICAL_DEVICES); for (i = 0; i < 2 ; i++) { if (fusion->ld_map[i]) dma_free_coherent(&instance->pdev->dev, diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c index e48d4261d0bca..f17ec83f7c98e 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c @@ -1310,7 +1310,7 @@ megasas_sync_pd_seq_num(struct megasas_instance *instance, bool pend) { pd_sync = (void *)fusion->pd_seq_sync[(instance->pd_seq_map_id & 1)]; pd_seq_h = fusion->pd_seq_phys[(instance->pd_seq_map_id & 1)]; - pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES - 1); + pd_seq_map_sz = struct_size(pd_sync, seq, MAX_PHYSICAL_DEVICES); cmd = megasas_get_cmd(instance); if (!cmd) { diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index df92d4369e044..49e9a9048ee7e 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -1249,7 +1249,7 @@ struct MR_PD_CFG_SEQ { struct MR_PD_CFG_SEQ_NUM_SYNC { __le32 size; __le32 count; - struct MR_PD_CFG_SEQ seq[1]; + struct MR_PD_CFG_SEQ seq[]; } __packed; /* stream detection */