diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:28:51 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-02 11:24:54 -0700 |
| commit | 59656519763d55bb93730ca17a11fba399a6ef49 (patch) | |
| tree | b39026e2ea35ab8fae74882aba1df44fa7ed3501 | |
| parent | 20551ee45d7d9fc655e27d16380e65ae8acbacc0 (diff) | |
net: mana: Annotate struct hwc_dma_buf 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 hwc_dma_buf.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: Long Li <longli@microsoft.com>
Cc: Ajay Sharma <sharmaajay@microsoft.com>
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>
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922172858.3822653-9-keescook@chromium.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | include/net/mana/hw_channel.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/mana/hw_channel.h b/include/net/mana/hw_channel.h index 3d3b5c881bc1..158b125692c2 100644 --- a/include/net/mana/hw_channel.h +++ b/include/net/mana/hw_channel.h @@ -121,7 +121,7 @@ struct hwc_dma_buf { u32 gpa_mkey; u32 num_reqs; - struct hwc_work_request reqs[]; + struct hwc_work_request reqs[] __counted_by(num_reqs); }; typedef void hwc_rx_event_handler_t(void *ctx, u32 gdma_rxq_id, |