On 11/07/24 11:28, Kees Cook wrote:
Replace the deprecated[1] use of a 1-element array in
struct _RAID_VOL0_SETTINGS with a modern flexible array.
Additionally add __counted_by annotation since PhysDisk is only ever
accessed via a loops bounded by NumPhysDisks:
lsi/mpi_cnfg.h: RAID_VOL0_PHYS_DISK PhysDisk[] __counted_by(NumPhysDisks); /* 28h */
mptbase.c: for (i = 0; i < buffer->NumPhysDisks; i++) {
mptbase.c: buffer->PhysDisk[i].PhysDiskNum, &phys_disk) != 0)
mptsas.c: for (i = 0; i < buffer->NumPhysDisks; i++) {
mptsas.c: buffer->PhysDisk[i].PhysDiskNum, &phys_disk) != 0)
mptsas.c: for (i = 0; i < buffer->NumPhysDisks; i++) {
mptsas.c: buffer->PhysDisk[i].PhysDiskNum, &phys_disk) != 0)
No binary differences are present after this conversion.
Link: https://github.com/KSPP/linux/issues/79 [1]
Signed-off-by: Kees Cook <kees@xxxxxxxxxx>
Reviewed-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx>
Thanks!
--
Gustavo
---
Cc: Sathya Prakash <sathya.prakash@xxxxxxxxxxxx>
Cc: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx>
Cc: Suganath Prabu Subramani <suganath-prabu.subramani@xxxxxxxxxxxx>
Cc: "Gustavo A. R. Silva" <gustavoars@xxxxxxxxxx>
Cc: MPT-FusionLinux.pdl@xxxxxxxxxxxx
Cc: linux-scsi@xxxxxxxxxxxxxxx
Cc: linux-hardening@xxxxxxxxxxxxxxx
---
drivers/message/fusion/lsi/mpi_cnfg.h | 10 +---------
1 file changed, 1 insertion(+), 9 deletions(-)
diff --git a/drivers/message/fusion/lsi/mpi_cnfg.h b/drivers/message/fusion/lsi/mpi_cnfg.h
index 3770cb1cff7d..f59a741ef21c 100644
--- a/drivers/message/fusion/lsi/mpi_cnfg.h
+++ b/drivers/message/fusion/lsi/mpi_cnfg.h
@@ -2295,14 +2295,6 @@ typedef struct _RAID_VOL0_SETTINGS
#define MPI_RAID_HOT_SPARE_POOL_6 (0x40)
#define MPI_RAID_HOT_SPARE_POOL_7 (0x80)
-/*
- * Host code (drivers, BIOS, utilities, etc.) should leave this define set to
- * one and check Header.PageLength at runtime.
- */
-#ifndef MPI_RAID_VOL_PAGE_0_PHYSDISK_MAX
-#define MPI_RAID_VOL_PAGE_0_PHYSDISK_MAX (1)
-#endif
-
typedef struct _CONFIG_PAGE_RAID_VOL_0
{
CONFIG_PAGE_HEADER Header; /* 00h */
@@ -2321,7 +2313,7 @@ typedef struct _CONFIG_PAGE_RAID_VOL_0
U8 DataScrubRate; /* 25h */
U8 ResyncRate; /* 26h */
U8 InactiveStatus; /* 27h */
- RAID_VOL0_PHYS_DISK PhysDisk[MPI_RAID_VOL_PAGE_0_PHYSDISK_MAX];/* 28h */
+ RAID_VOL0_PHYS_DISK PhysDisk[] __counted_by(NumPhysDisks); /* 28h */
} CONFIG_PAGE_RAID_VOL_0, MPI_POINTER PTR_CONFIG_PAGE_RAID_VOL_0,
RaidVolumePage0_t, MPI_POINTER pRaidVolumePage0_t;
