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RDMA/core: Annotate struct ib_pkey_cache with __counted_by 

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 ib_pkey_cache.

[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci

Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: "Håkon Bugge" <haakon.bugge@oracle.com>
Cc: Avihai Horon <avihaih@nvidia.com>
Cc: Anand Khoje <anand.a.khoje@oracle.com>
Cc: Mark Bloch <mbloch@nvidia.com>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230929180431.3005464-2-keescook@chromium.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Kees Cook 2023-09-29 11:04:25 -07:00 committed by Leon Romanovsky
parent 4755dc6f29
commit fc424078f5
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/core/cache.c
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@ -46,7 +46,7 @@
struct ib_pkey_cache {
int table_len;
u16 table[];
u16 table[] __counted_by(table_len);
};
struct ib_update_work {