Messages in this thread Patch in this message | | | From | Kees Cook <> | Subject | [PATCH 2/5] cxgb4: Annotate struct clip_tbl with __counted_by | Date | Fri, 29 Sep 2023 11:11:46 -0700 |
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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 clip_tbl.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Raju Rangoju <rajur@chelsio.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: netdev@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org> --- drivers/net/ethernet/chelsio/cxgb4/clip_tbl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.h b/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.h index 290c1058069a..847c7fc2bbd9 100644 --- a/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.h +++ b/drivers/net/ethernet/chelsio/cxgb4/clip_tbl.h @@ -29,7 +29,7 @@ struct clip_tbl { atomic_t nfree; struct list_head ce_free_head; void *cl_list; - struct list_head hash_list[]; + struct list_head hash_list[] __counted_by(clipt_size); }; enum { -- 2.34.1
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