Messages in this thread Patch in this message | | | From | Kees Cook <> | Subject | [PATCH] RDMA/cxgb4: Replace 0-length arrays with flexible arrays | Date | Thu, 5 Jan 2023 14:32:32 -0800 |
| |
Zero-length arrays are deprecated[1]. Replace all remaining 0-length arrays with flexible arrays. Detected with GCC 13, using -fstrict-flex-arrays=3:
In function 'build_rdma_write', inlined from 'c4iw_post_send' at ../drivers/infiniband/hw/cxgb4/qp.c:1173:10: ../drivers/infiniband/hw/cxgb4/qp.c:597:38: warning: array subscript 0 is outside array bounds of 'struct fw_ri_immd[0]' [-Warray-bounds=] 597 | wqe->write.u.immd_src[0].r2 = 0; | ~~~~~~~~~~~~~~~~~~~~~^~~ ../drivers/infiniband/hw/cxgb4/t4fw_ri_api.h: In function 'c4iw_post_send': ../drivers/infiniband/hw/cxgb4/t4fw_ri_api.h:567:35: note: while referencing 'immd_src' 567 | struct fw_ri_immd immd_src[0]; | ^~~~~~~~
Additionally drop the unused C99_NOT_SUPPORTED ifndef lines.
[1] https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays
Cc: Potnuri Bharat Teja <bharat@chelsio.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Leon Romanovsky <leon@kernel.org> Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org> Cc: linux-rdma@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> --- drivers/infiniband/hw/cxgb4/t4fw_ri_api.h | 26 ++++++----------------- 1 file changed, 6 insertions(+), 20 deletions(-)
diff --git a/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h b/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h index a2f5e29ef226..1f79537fc8d1 100644 --- a/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h +++ b/drivers/infiniband/hw/cxgb4/t4fw_ri_api.h @@ -122,9 +122,7 @@ struct fw_ri_dsgl { __be16 nsge; __be32 len0; __be64 addr0; -#ifndef C99_NOT_SUPPORTED struct fw_ri_dsge_pair sge[]; -#endif }; struct fw_ri_sge { @@ -138,9 +136,7 @@ struct fw_ri_isgl { __u8 r1; __be16 nsge; __be32 r2; -#ifndef C99_NOT_SUPPORTED struct fw_ri_sge sge[]; -#endif }; struct fw_ri_immd { @@ -148,9 +144,7 @@ struct fw_ri_immd { __u8 r1; __be16 r2; __be32 immdlen; -#ifndef C99_NOT_SUPPORTED __u8 data[]; -#endif }; struct fw_ri_tpte { @@ -320,9 +314,7 @@ struct fw_ri_res_wr { __be32 op_nres; __be32 len16_pkd; __u64 cookie; -#ifndef C99_NOT_SUPPORTED struct fw_ri_res res[]; -#endif }; #define FW_RI_RES_WR_NRES_S 0 @@ -562,12 +554,10 @@ struct fw_ri_rdma_write_wr { __be32 plen; __be32 stag_sink; __be64 to_sink; -#ifndef C99_NOT_SUPPORTED union { - struct fw_ri_immd immd_src[0]; - struct fw_ri_isgl isgl_src[0]; + DECLARE_FLEX_ARRAY(struct fw_ri_immd, immd_src); + DECLARE_FLEX_ARRAY(struct fw_ri_isgl, isgl_src); } u; -#endif }; struct fw_ri_send_wr { @@ -581,12 +571,10 @@ struct fw_ri_send_wr { __be32 plen; __be32 r3; __be64 r4; -#ifndef C99_NOT_SUPPORTED union { - struct fw_ri_immd immd_src[0]; - struct fw_ri_isgl isgl_src[0]; + DECLARE_FLEX_ARRAY(struct fw_ri_immd, immd_src); + DECLARE_FLEX_ARRAY(struct fw_ri_isgl, isgl_src); } u; -#endif }; #define FW_RI_SEND_WR_SENDOP_S 0 @@ -618,12 +606,10 @@ struct fw_ri_rdma_write_cmpl_wr { struct fw_ri_isgl isgl_src; } u_cmpl; __be64 r3; -#ifndef C99_NOT_SUPPORTED union fw_ri_write { - struct fw_ri_immd immd_src[0]; - struct fw_ri_isgl isgl_src[0]; + DECLARE_FLEX_ARRAY(struct fw_ri_immd, immd_src); + DECLARE_FLEX_ARRAY(struct fw_ri_isgl, isgl_src); } u; -#endif }; struct fw_ri_rdma_read_wr { -- 2.34.1
| |