Messages in this thread Patch in this message | | | From | Kees Cook <> | Subject | [PATCH] scsi: uapi: Replace 0-length array with flexible array | Date | Thu, 5 Jan 2023 15:30:46 -0800 |
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Zero-length arrays are deprecated[1]. Replace struct fc_bsg_host_vendor_reply's "vendor_rsp" 0-length array with a flexible array. Detected with GCC 13, using -fstrict-flex-arrays=3:
drivers/scsi/qla2xxx/qla_isr.c: In function 'qla25xx_process_bidir_status_iocb.isra': drivers/scsi/qla2xxx/qla_isr.c:3117:54: warning: array subscript 0 is outside array bounds of '__u32[0]' {aka 'unsigned int[]'} [-Warray-bounds=] 3117 | bsg_reply->reply_data.vendor_reply.vendor_rsp[0] = rval; | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~ In file included from drivers/scsi/qla2xxx/qla_def.h:34, from drivers/scsi/qla2xxx/qla_isr.c:6: include/uapi/scsi/scsi_bsg_fc.h:219:15: note: while referencing 'vendor_rsp' 219 | __u32 vendor_rsp[0]; | ^~~~~~~~~~
[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays
Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Signed-off-by: Kees Cook <keescook@chromium.org> --- include/uapi/scsi/scsi_bsg_fc.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/uapi/scsi/scsi_bsg_fc.h b/include/uapi/scsi/scsi_bsg_fc.h index 7f5930801f72..5e46cf1054af 100644 --- a/include/uapi/scsi/scsi_bsg_fc.h +++ b/include/uapi/scsi/scsi_bsg_fc.h @@ -216,7 +216,7 @@ struct fc_bsg_host_vendor { */ struct fc_bsg_host_vendor_reply { /* start of vendor response area */ - __u32 vendor_rsp[0]; + __DECLARE_FLEX_ARRAY(__u32, vendor_rsp); }; -- 2.34.1
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