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_DRV_RAID_MAP and refactor the the rest of the code accordingly. This helps with the ongoing efforts to tighten the FORTIFY_SOURCE routines on memcpy(). Link: https://github.com/KSPP/linux/issues/79 Link: https://github.com/KSPP/linux/issues/109 Enhanced-by: Kees Cook <keescook@xxxxxxxxxxxx> # Change in struct MR_FW_RAID_MAP_ALL Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx> --- Changes in v3: - Modify MR_FW_RAID_MAP_ALL structures. - Revert use of struct_size() helper. Changes in v2: - Update Subject line and changelog text. drivers/scsi/megaraid/megaraid_sas_base.c | 2 +- drivers/scsi/megaraid/megaraid_sas_fp.c | 2 +- drivers/scsi/megaraid/megaraid_sas_fusion.h | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c index a3e117a4b8e7..c06a346a3eaf 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -5159,7 +5159,7 @@ static void megasas_update_ext_vd_details(struct megasas_instance *instance) } else { fusion->old_map_sz = sizeof(struct MR_FW_RAID_MAP) + (sizeof(struct MR_LD_SPAN_MAP) * - (instance->fw_supported_vd_count - 1)); + instance->fw_supported_vd_count); fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT); fusion->max_map_sz = diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c b/drivers/scsi/megaraid/megaraid_sas_fp.c index 83f69c33b01a..b2ec7a3f7650 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fp.c +++ b/drivers/scsi/megaraid/megaraid_sas_fp.c @@ -327,7 +327,7 @@ u8 MR_ValidateMapInfo(struct megasas_instance *instance, u64 map_id) expected_size = sizeof(struct MR_FW_RAID_MAP_EXT); else expected_size = - (sizeof(struct MR_FW_RAID_MAP) - sizeof(struct MR_LD_SPAN_MAP) + + (sizeof(struct MR_FW_RAID_MAP) + (sizeof(struct MR_LD_SPAN_MAP) * le16_to_cpu(pDrvRaidMap->ldCount))); if (le32_to_cpu(pDrvRaidMap->totalSize) != expected_size) { diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.h b/drivers/scsi/megaraid/megaraid_sas_fusion.h index ce84f811e5e1..5530c233fccb 100644 --- a/drivers/scsi/megaraid/megaraid_sas_fusion.h +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.h @@ -942,7 +942,7 @@ struct MR_FW_RAID_MAP { u8 reserved2[7]; struct MR_ARRAY_INFO arMapInfo[MAX_RAIDMAP_ARRAYS]; struct MR_DEV_HANDLE_INFO devHndlInfo[MAX_RAIDMAP_PHYSICAL_DEVICES]; - struct MR_LD_SPAN_MAP ldSpanMap[1]; + struct MR_LD_SPAN_MAP ldSpanMap[]; }; struct IO_REQUEST_INFO { @@ -1148,7 +1148,7 @@ typedef struct LOG_BLOCK_SPAN_INFO { struct MR_FW_RAID_MAP_ALL { struct MR_FW_RAID_MAP raidMap; - struct MR_LD_SPAN_MAP ldSpanMap[MAX_LOGICAL_DRIVES - 1]; + struct MR_LD_SPAN_MAP ldSpanMap[MAX_LOGICAL_DRIVES]; } __attribute__ ((packed)); struct MR_DRV_RAID_MAP { -- 2.34.1
