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

Gustavo A. R. Silva
2023-06-28T17:58:21Z

Replace one-element array with flexible-array member in struct
user_sgmap and refactor the rest of the code, accordingly.

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

This results in no differences in binary output.

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/aacraid.h | 2 +-
drivers/scsi/aacraid/commctrl.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index fb3d93e4a99e..7d3f2f7348ff 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -512,7 +512,7 @@ struct sgmap {

struct user_sgmap {
u32 count;
- struct user_sgentry sg[1];
+ struct user_sgentry sg[];
};

struct sgmap64 {
diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index df811ad4afaa..74eb33eb70d3 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -523,7 +523,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
goto cleanup;
}

- if ((fibsize < (sizeof(struct user_aac_srb) - sizeof(struct user_sgentry))) ||
+ if ((fibsize < sizeof(struct user_aac_srb)) ||
(fibsize > (dev->max_fib_size - sizeof(struct aac_fibhdr)))) {
rcode = -EINVAL;
goto cleanup;
--
2.34.1