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scsi: megaraid_sas: Replace one-element array with flexible-array member in MR_FW_RAID_MAP

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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 <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Enhanced-by: Kees Cook <keescook@chromium.org> # Change in struct MR_FW_RAID_MAP_ALL
This commit is contained in:
Gustavo A. R. Silva 2022-08-15 16:40:35 -05:00 committed by Martin K. Petersen
parent 3cb0643a9a
commit ac23b92b27
3 changed files with 4 additions and 4 deletions
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2
drivers/scsi/megaraid/megaraid_sas_base.c
View File

@ -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 =

2
drivers/scsi/megaraid/megaraid_sas_fp.c
View File

@ -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) {

4
drivers/scsi/megaraid/megaraid_sas_fusion.h
View File

@ -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 {