On 11/07/24 11:28, Kees Cook wrote:
Replace the deprecated[1] use of a 1-element array in
struct _CONFIG_PAGE_SAS_IO_UNIT_0 with a modern flexible array.
Additionally add __counted_by annotation since PhyData is only ever
accessed via a loops bounded by NumPhys:
lsi/mpi_cnfg.h: MPI_SAS_IO_UNIT0_PHY_DATA PhyData[] __counted_by(NumPhys); /* 10h */
mptsas.c: port_info->num_phys = buffer->NumPhys;
mptsas.c: for (i = 0; i < port_info->num_phys; i++) {
mptsas.c: mptsas_print_phy_data(ioc, &buffer->PhyData[i]);
mptsas.c: port_info->phy_info[i].phy_id = i;
mptsas.c: port_info->phy_info[i].port_id =
mptsas.c: buffer->PhyData[i].Port;
mptsas.c: port_info->phy_info[i].negotiated_link_rate =
mptsas.c: buffer->PhyData[i].NegotiatedLinkRate;
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 f59a741ef21c..c7997e32e82e 100644
--- a/drivers/message/fusion/lsi/mpi_cnfg.h
+++ b/drivers/message/fusion/lsi/mpi_cnfg.h
@@ -2547,14 +2547,6 @@ typedef struct _MPI_SAS_IO_UNIT0_PHY_DATA
} MPI_SAS_IO_UNIT0_PHY_DATA, MPI_POINTER PTR_MPI_SAS_IO_UNIT0_PHY_DATA,
SasIOUnit0PhyData, MPI_POINTER pSasIOUnit0PhyData;
-/*
- * Host code (drivers, BIOS, utilities, etc.) should leave this define set to
- * one and check Header.PageLength at runtime.
- */
-#ifndef MPI_SAS_IOUNIT0_PHY_MAX
-#define MPI_SAS_IOUNIT0_PHY_MAX (1)
-#endif
-
typedef struct _CONFIG_PAGE_SAS_IO_UNIT_0
{
CONFIG_EXTENDED_PAGE_HEADER Header; /* 00h */
@@ -2563,7 +2555,7 @@ typedef struct _CONFIG_PAGE_SAS_IO_UNIT_0
U8 NumPhys; /* 0Ch */
U8 Reserved2; /* 0Dh */
U16 Reserved3; /* 0Eh */
- MPI_SAS_IO_UNIT0_PHY_DATA PhyData[MPI_SAS_IOUNIT0_PHY_MAX]; /* 10h */
+ MPI_SAS_IO_UNIT0_PHY_DATA PhyData[] __counted_by(NumPhys); /* 10h */
} CONFIG_PAGE_SAS_IO_UNIT_0, MPI_POINTER PTR_CONFIG_PAGE_SAS_IO_UNIT_0,
SasIOUnitPage0_t, MPI_POINTER pSasIOUnitPage0_t;
