| Message ID | 20230922172858.3822653-7-keescook@chromium.org (mailing list archive) |
|---|---|
| State | Not Applicable |
| Headers | show |
| Series | Batch 1: Annotate structs with __counted_by | expand |
On 9/22/23 11:28, Kees Cook wrote: > Prepare for the coming implementation by GCC and Clang of the __counted_by > attribute. Flexible array members annotated with __counted_by can have > their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS > (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family > functions). > > As found with Coccinelle[1], add __counted_by for struct mana_rxq. > > [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci > > Cc: "K. Y. Srinivasan" <kys@microsoft.com> > Cc: Haiyang Zhang <haiyangz@microsoft.com> > Cc: Wei Liu <wei.liu@kernel.org> > Cc: Dexuan Cui <decui@microsoft.com> > Cc: Long Li <longli@microsoft.com> > Cc: Ajay Sharma <sharmaajay@microsoft.com> > Cc: "David S. Miller" <davem@davemloft.net> > Cc: Eric Dumazet <edumazet@google.com> > Cc: Jakub Kicinski <kuba@kernel.org> > Cc: Paolo Abeni <pabeni@redhat.com> > Cc: linux-hyperv@vger.kernel.org > Cc: linux-rdma@vger.kernel.org > Cc: netdev@vger.kernel.org > Signed-off-by: Kees Cook <keescook@chromium.org> Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org> Thanks
diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h index 9f70b4332238..38441be68592 100644 --- a/include/net/mana/mana.h +++ b/include/net/mana/mana.h @@ -338,7 +338,7 @@ struct mana_rxq { /* MUST BE THE LAST MEMBER: * Each receive buffer has an associated mana_recv_buf_oob. */ - struct mana_recv_buf_oob rx_oobs[]; + struct mana_recv_buf_oob rx_oobs[] __counted_by(num_rx_buf); }; struct mana_tx_qp {
Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct mana_rxq. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: Wei Liu <wei.liu@kernel.org> Cc: Dexuan Cui <decui@microsoft.com> Cc: Long Li <longli@microsoft.com> Cc: Ajay Sharma <sharmaajay@microsoft.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: linux-hyperv@vger.kernel.org Cc: linux-rdma@vger.kernel.org Cc: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> --- include/net/mana/mana.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)