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| author | Kees Cook <keescook@chromium.org> | 2023-09-22 20:28:49 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-02 21:24:53 +0300 |
| commit | a3d7a1209bbb06fe9d24b274475bc9879ca73333 (patch) | |
| tree | cd96a088db74cd9a5a6308c423ec8164980c0a4f | |
| parent | 2290999d278e7552e71df6b13f619a4f73d348bc (diff) | |
| download | linux-a3d7a1209bbb06fe9d24b274475bc9879ca73333.tar.xz | |
net: mana: Annotate struct mana_rxq 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 mana_rxq.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Wei Liu <wei.liu@kernel.org>
Cc: Dexuan Cui <decui@microsoft.com>
Cc: Long Li <longli@microsoft.com>
Cc: Ajay Sharma <sharmaajay@microsoft.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922172858.3822653-7-keescook@chromium.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | include/net/mana/mana.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/mana/mana.h b/include/net/mana/mana.h index 9f70b4332238..38441be68592 100644 --- a/include/net/mana/mana.h +++ b/include/net/mana/mana.h @@ -338,7 +338,7 @@ struct mana_rxq { /* MUST BE THE LAST MEMBER: * Each receive buffer has an associated mana_recv_buf_oob. */ - struct mana_recv_buf_oob rx_oobs[]; + struct mana_recv_buf_oob rx_oobs[] __counted_by(num_rx_buf); }; struct mana_tx_qp { |