diff options
| author | Kees Cook <keescook@chromium.org> | 2023-09-15 13:14:49 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2023-10-02 09:48:52 -0700 |
| commit | 2d26302bdff1300029a67931739f5770eac22493 (patch) | |
| tree | 1ac975ca6c6ffe8bfac9bc7e52cfc652a36fdd1b /fs/afs | |
| parent | aade15333c3b4fe24403fd9a52e15fb61993face (diff) | |
afs: Annotate struct afs_addr_list 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 afs_addr_list.
[1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci
Cc: David Howells <dhowells@redhat.com>
Cc: Marc Dionne <marc.dionne@auristor.com>
Cc: linux-afs@lists.infradead.org
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/20230915201449.never.649-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'fs/afs')
| -rw-r--r-- | fs/afs/internal.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/afs/internal.h b/fs/afs/internal.h index 813efd3784aa..469a717467a4 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -87,7 +87,7 @@ struct afs_addr_list { enum dns_lookup_status status:8; unsigned long failed; /* Mask of addrs that failed locally/ICMP */ unsigned long responded; /* Mask of addrs that responded */ - struct sockaddr_rxrpc addrs[]; + struct sockaddr_rxrpc addrs[] __counted_by(max_addrs); #define AFS_MAX_ADDRESSES ((unsigned int)(sizeof(unsigned long) * 8)) }; |