[PATCH 05/10][next] scsi: aacraid: Replace one-element array with flexible-array member in struct sgmapraw

Gustavo A. R. Silva
2023-06-28T17:55:56Z

Replace one-element array with flexible-array member in struct
sgmapraw.

Issue found with the help of Coccinelle and audited and fixed,
manually.

Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/ClangBuiltLinux/linux/issues/1851
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
---
drivers/scsi/aacraid/aachba.c | 4 ++--
drivers/scsi/aacraid/aacraid.h | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index fff0550e02e4..b3c0c2255e55 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -1267,7 +1267,7 @@ static int aac_read_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u3
return ret;
command = ContainerRawIo;
fibsize = sizeof(struct aac_raw_io) +
- ((le32_to_cpu(readcmd->sg.count)-1) * sizeof(struct sgentryraw));
+ le32_to_cpu(readcmd->sg.count) * sizeof(struct sgentryraw);
}

BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr)));
@@ -1401,7 +1401,7 @@ static int aac_write_raw_io(struct fib * fib, struct scsi_cmnd * cmd, u64 lba, u
return ret;
command = ContainerRawIo;
fibsize = sizeof(struct aac_raw_io) +
- ((le32_to_cpu(writecmd->sg.count)-1) * sizeof (struct sgentryraw));
+ le32_to_cpu(writecmd->sg.count) * sizeof(struct sgentryraw);
}

BUG_ON(fibsize > (fib->dev->max_fib_size - sizeof(struct aac_fibhdr)));
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index d1fc1ce2e36d..87015dd2abd9 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -527,7 +527,7 @@ struct user_sgmap64 {

struct sgmapraw {
__le32 count;
- struct sgentryraw sg[1];
+ struct sgentryraw sg[];
};

struct user_sgmapraw {
--
2.34.1