Replace one-element array with flexible-array member in struct sgmapraw. This issue was found with the help of Coccinelle and audited and fixed, manually. Link: https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays Link: https://github.com/KSPP/linux/issues/79 Signed-off-by: Gustavo A. R. Silva <gustavoars@xxxxxxxxxx> --- drivers/scsi/aacraid/aachba.c | 18 ++++++------------ drivers/scsi/aacraid/aacraid.h | 2 +- 2 files changed, 7 insertions(+), 13 deletions(-) diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c index 02b75a2c3a88..5c089993cf2a 100644 --- a/drivers/scsi/aacraid/aachba.c +++ b/drivers/scsi/aacraid/aachba.c @@ -1224,7 +1224,8 @@ static void io_callback(void *context, struct fib * fibptr); static int aac_read_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count) { struct aac_dev *dev = fib->dev; - u16 fibsize, command; + size_t fibsize; + u16 command; long ret; aac_fib_init(fib); @@ -1262,8 +1263,7 @@ static int aac_read_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u3 if (ret < 0) return ret; command = ContainerRawIo; - fibsize = sizeof(struct aac_raw_io) + - ((le32_to_cpu(readcmd->sg.count)-1) * sizeof(struct sgentryraw)); + fibsize = struct_size(readcmd, sg.sg, le32_to_cpu(readcmd->sg.count)); } BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr))); @@ -1348,7 +1348,8 @@ static int aac_read_block(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 static int aac_write_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u32 count, int fua) { struct aac_dev *dev = fib->dev; - u16 fibsize, command; + size_t fibsize; + u16 command; long ret; aac_fib_init(fib); @@ -1392,8 +1393,7 @@ static int aac_write_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u if (ret < 0) return ret; command = ContainerRawIo; - fibsize = sizeof(struct aac_raw_io) + - ((le32_to_cpu(writecmd->sg.count)-1) * sizeof (struct sgentryraw)); + fibsize = struct_size(writecmd, sg.sg, le32_to_cpu(writecmd->sg.count)); } BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr))); @@ -3861,12 +3861,6 @@ static long aac_build_sgraw(struct scsi_cmnd *scsicmd, struct sgmapraw *psg) // Get rid of old data psg->count = 0; - psg->sg[0].next = 0; - psg->sg[0].prev = 0; - psg->sg[0].addr[0] = 0; - psg->sg[0].addr[1] = 0; - psg->sg[0].count = 0; - psg->sg[0].flags = 0; nseg = scsi_dma_map(scsicmd); if (nseg <= 0) diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h index fa5a93b4dc7b..511a58ec5c9d 100644 --- a/drivers/scsi/aacraid/aacraid.h +++ b/drivers/scsi/aacraid/aacraid.h @@ -526,7 +526,7 @@ struct user_sgmap64 { struct sgmapraw { __le32 count; - struct sgentryraw sg[1]; + struct sgentryraw sg[]; }; struct user_sgmapraw { -- 2.27.0
