diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-22 10:28:45 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-02 11:24:52 -0700 |
| commit | 5d22b6528073fd79f6a520234c77f77c2ed8b9e1 (patch) | |
| tree | 6d548d0bcc1cfb3efc5c13d4abc0fa6c3c8fc1d0 /include/net/if_inet6.h | |
| parent | 210d4e9c732fa87b584af72faae96c037d9d7957 (diff) | |
ipv6: Annotate struct ip6_sf_socklist 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 ip6_sf_socklist.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230922172858.3822653-3-keescook@chromium.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include/net/if_inet6.h')
| -rw-r--r-- | include/net/if_inet6.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h index c8490729b4ae..3e454c4d7ba6 100644 --- a/include/net/if_inet6.h +++ b/include/net/if_inet6.h @@ -89,7 +89,7 @@ struct ip6_sf_socklist { unsigned int sl_max; unsigned int sl_count; struct rcu_head rcu; - struct in6_addr sl_addr[]; + struct in6_addr sl_addr[] __counted_by(sl_max); }; #define IP6_SFBLOCK 10 /* allocate this many at once */ |