From ac23b92b27e32f1ff331350342ce9f2ee9d0ab0f Mon Sep 17 00:00:00 2001 From: "Gustavo A. R. Silva" Date: Mon, 15 Aug 2022 16:40:35 -0500 Subject: [PATCH] scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_FW_RAID_MAP 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 Link: https://lore.kernel.org/r/4495ce170c8ef088a10f1abe0e7c227368f43242.1660592640.git.gustavoars@kernel.org Reviewed-by: Kees Cook Signed-off-by: Gustavo A. R. Silva Signed-off-by: Martin K. Petersen Enhanced-by: Kees Cook # Change in struct MR_FW_RAID_MAP_ALL --- 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 c9b01b155f65..43b97376f4e1 100644 --- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -5157,7 +5157,7 @@ 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 {