diff options
| author | Kees Cook <keescook@chromium.org> | 2022-02-07 22:12:31 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-02-11 16:42:22 -0500 |
| commit | 03e4383c7ce36ac400489c8fe84724470a8251e9 (patch) | |
| tree | caaa77b8488172fa88bbd630a4e6d755ffa8d65c /include/scsi/viosrp.h | |
| parent | 49b729f58e7a98a006a8a0c1dcca8a1a4f58d2a8 (diff) | |
| download | lwn-03e4383c7ce36ac400489c8fe84724470a8251e9.tar.gz lwn-03e4383c7ce36ac400489c8fe84724470a8251e9.zip | |
scsi: ibmvscsis: Silence -Warray-bounds warning
Instead of doing a cast to storage that is too small, add a union for the
high 64 bits. Silences the warnings under -Warray-bounds:
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c: In function 'ibmvscsis_send_messages':
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:1934:44: error: array subscript 'struct viosrp_crq[0]' is partly outside array bounds of 'u64[1]' {aka 'long long unsigned int[1]'} [-Werror=array-bounds]
1934 | crq->valid = VALID_CMD_RESP_EL;
| ^~
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:1875:13: note: while referencing 'msg_hi'
1875 | u64 msg_hi = 0;
| ^~~~~~
There is no change to the resulting binary instructions.
Link: https://lore.kernel.org/lkml/20220125142430.75c3160e@canb.auug.org.au
Link: https://lore.kernel.org/r/20220208061231.3429486-1-keescook@chromium.org
Cc: Michael Cyr <mikecyr@linux.ibm.com>
Cc: "James E.J. Bottomley" <jejb@linux.ibm.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Tyrel Datwyler <tyreld@linux.ibm.com>
Cc: linux-scsi@vger.kernel.org
Cc: target-devel@vger.kernel.org
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi/viosrp.h')
| -rw-r--r-- | include/scsi/viosrp.h | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/include/scsi/viosrp.h b/include/scsi/viosrp.h index c978133c83e3..6c5559d2b285 100644 --- a/include/scsi/viosrp.h +++ b/include/scsi/viosrp.h @@ -70,12 +70,17 @@ enum viosrp_crq_status { }; struct viosrp_crq { - u8 valid; /* used by RPA */ - u8 format; /* SCSI vs out-of-band */ - u8 reserved; - u8 status; /* non-scsi failure? (e.g. DMA failure) */ - __be16 timeout; /* in seconds */ - __be16 IU_length; /* in bytes */ + union { + __be64 high; /* High 64 bits */ + struct { + u8 valid; /* used by RPA */ + u8 format; /* SCSI vs out-of-band */ + u8 reserved; + u8 status; /* non-scsi failure? (e.g. DMA failure) */ + __be16 timeout; /* in seconds */ + __be16 IU_length; /* in bytes */ + }; + }; __be64 IU_data_ptr; /* the TCE for transferring data */ }; |