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| author | Gustavo A. R. Silva <gustavoars@kernel.org> | 2023-04-21 14:08:53 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-04-23 13:36:05 +0100 |
| commit | 788352191c85326beb74f518ba761ed38b82f533 (patch) | |
| tree | 6bf5098c2644658b97315c6de2221f3ca8aed37f /net/rxrpc | |
| parent | 6bb218b5a6e3f3c5e2e76faf8fc976f3f6f72496 (diff) | |
| download | lwn-788352191c85326beb74f518ba761ed38b82f533.tar.gz lwn-788352191c85326beb74f518ba761ed38b82f533.zip | |
rxrpc: Replace fake flex-array with flexible-array member
Zero-length arrays as fake flexible arrays are deprecated and we are
moving towards adopting C99 flexible-array members instead.
Transform zero-length array into flexible-array member in struct
rxrpc_ackpacket.
Address the following warnings found with GCC-13 and
-fstrict-flex-arrays=3 enabled:
net/rxrpc/call_event.c:149:38: warning: array subscript i is outside array bounds of ‘uint8_t[0]’ {aka ‘unsigned char[]’} [-Warray-bounds=]
This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [1].
Link: https://github.com/KSPP/linux/issues/21
Link: https://github.com/KSPP/linux/issues/263
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Jeffrey Altman <jaltman@auristor.com>
cc: Marc Dionne <marc.dionne@auristor.com>
cc: "David S. Miller" <davem@davemloft.net>
cc: Eric Dumazet <edumazet@google.com>
cc: Jakub Kicinski <kuba@kernel.org>
cc: Paolo Abeni <pabeni@redhat.com>
cc: linux-afs@lists.infradead.org
cc: netdev@vger.kernel.org
cc: linux-hardening@vger.kernel.org
Link: https://lore.kernel.org/r/ZAZT11n4q5bBttW0@work/
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/rxrpc')
| -rw-r--r-- | net/rxrpc/protocol.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/rxrpc/protocol.h b/net/rxrpc/protocol.h index 6760cb99c6d6..e8ee4af43ca8 100644 --- a/net/rxrpc/protocol.h +++ b/net/rxrpc/protocol.h @@ -126,7 +126,7 @@ struct rxrpc_ackpacket { uint8_t nAcks; /* number of ACKs */ #define RXRPC_MAXACKS 255 - uint8_t acks[0]; /* list of ACK/NAKs */ + uint8_t acks[]; /* list of ACK/NAKs */ #define RXRPC_ACK_TYPE_NACK 0 #define RXRPC_ACK_TYPE_ACK 1 |