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IB/srp: Annotate struct srp_fr_pool 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 srp_fr_pool.

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

Cc: Bart Van Assche <bvanassche@acm.org>
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/20230929180431.3005464-5-keescook@chromium.org
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Kees Cook 2023-09-29 11:04:28 -07:00 committed by Leon Romanovsky
parent 0bc018b7a7
commit bd8eec5bfa
1 changed files with 1 additions and 1 deletions
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2
drivers/infiniband/ulp/srp/ib_srp.h
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@ -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);
};
/**