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RDMA/usnic: Annotate struct usnic_uiom_chunk with __counted_by

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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 usnic_uiom_chunk.

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

Cc: Christian Benvenuti <benve@cisco.com>
Cc: Nelson Escobar <neescoba@cisco.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: linux-rdma@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230929180431.3005464-3-keescook@chromium.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Kees Cook 2023-09-29 11:04:26 -07:00 committed by Leon Romanovsky
parent fc424078f5
commit ed7c64de62
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/hw/usnic/usnic_uiom.h
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@ -77,7 +77,7 @@ struct usnic_uiom_reg {
struct usnic_uiom_chunk {
struct list_head list;
int nents;
struct scatterlist page_list[];
struct scatterlist page_list[] __counted_by(nents);
};
struct usnic_uiom_pd *usnic_uiom_alloc_pd(struct device *dev);