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 srp_fr_pool. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Cc: Bart Van Assche <bvanassche@xxxxxxx> Cc: Jason Gunthorpe <jgg@xxxxxxxx> Cc: Leon Romanovsky <leon@xxxxxxxxxx> Cc: linux-rdma@xxxxxxxxxxxxxxx Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> --- drivers/infiniband/ulp/srp/ib_srp.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h index 5d94db453df3..349576ff3845 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.h +++ b/drivers/infiniband/ulp/srp/ib_srp.h @@ -306,7 +306,7 @@ struct srp_fr_pool { int max_page_list_len; spinlock_t lock; struct list_head free_list; - struct srp_fr_desc desc[]; + struct srp_fr_desc desc[] __counted_by(size); }; /** -- 2.34.1
