| Message ID | 20240711172821.123936-5-kees@kernel.org (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | scsi: message: fusion: Replace 1-element arrays with flexible arrays | expand |
On 11/07/24 11:28, Kees Cook wrote: > Replace the deprecated[1] use of a 1-element array in > struct _CONFIG_PAGE_IOC_3 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: IOC_3_PHYS_DISK PhysDisk[] __counted_by(NumPhysDisks); /* 08h */ > mptscsih.c: for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) { > mptscsih.c: if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) && > mptscsih.c: (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) { > mptscsih.c: for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) { > mptscsih.c: ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum); > mptscsih.c: ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum, > mptscsih.c: for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) { > mptscsih.c: if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) && > mptscsih.c: (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) { > mptscsih.c: rc = ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum; > mptscsih.c: for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) { > mptscsih.c: ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum); > mptscsih.c: ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum, > > No binary differences are present after this conversion. > > Link: https://github.com/KSPP/linux/issues/79 [1] > Signed-off-by: Kees Cook <kees@kernel.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Thanks
diff --git a/drivers/message/fusion/lsi/mpi_cnfg.h b/drivers/message/fusion/lsi/mpi_cnfg.h index 7713c74e515b..bac49c162165 100644 --- a/drivers/message/fusion/lsi/mpi_cnfg.h +++ b/drivers/message/fusion/lsi/mpi_cnfg.h @@ -1056,21 +1056,13 @@ typedef struct _IOC_3_PHYS_DISK } IOC_3_PHYS_DISK, MPI_POINTER PTR_IOC_3_PHYS_DISK, Ioc3PhysDisk_t, MPI_POINTER pIoc3PhysDisk_t; -/* - * Host code (drivers, BIOS, utilities, etc.) should leave this define set to - * one and check Header.PageLength at runtime. - */ -#ifndef MPI_IOC_PAGE_3_PHYSDISK_MAX -#define MPI_IOC_PAGE_3_PHYSDISK_MAX (1) -#endif - typedef struct _CONFIG_PAGE_IOC_3 { CONFIG_PAGE_HEADER Header; /* 00h */ U8 NumPhysDisks; /* 04h */ U8 Reserved1; /* 05h */ U16 Reserved2; /* 06h */ - IOC_3_PHYS_DISK PhysDisk[MPI_IOC_PAGE_3_PHYSDISK_MAX]; /* 08h */ + IOC_3_PHYS_DISK PhysDisk[] __counted_by(NumPhysDisks); /* 08h */ } CONFIG_PAGE_IOC_3, MPI_POINTER PTR_CONFIG_PAGE_IOC_3, IOCPage3_t, MPI_POINTER pIOCPage3_t;
Replace the deprecated[1] use of a 1-element array in struct _CONFIG_PAGE_IOC_3 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: IOC_3_PHYS_DISK PhysDisk[] __counted_by(NumPhysDisks); /* 08h */ mptscsih.c: for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) { mptscsih.c: if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) && mptscsih.c: (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) { mptscsih.c: for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) { mptscsih.c: ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum); mptscsih.c: ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum, mptscsih.c: for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) { mptscsih.c: if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) && mptscsih.c: (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) { mptscsih.c: rc = ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum; mptscsih.c: for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) { mptscsih.c: ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum); mptscsih.c: ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum, No binary differences are present after this conversion. Link: https://github.com/KSPP/linux/issues/79 [1] Signed-off-by: Kees Cook <kees@kernel.org> --- Cc: Sathya Prakash <sathya.prakash@broadcom.com> Cc: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Cc: Suganath Prabu Subramani <suganath-prabu.subramani@broadcom.com> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Cc: MPT-FusionLinux.pdl@broadcom.com Cc: linux-scsi@vger.kernel.org Cc: linux-hardening@vger.kernel.org --- drivers/message/fusion/lsi/mpi_cnfg.h | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-)