| Message ID | 8fc991e842a43fef95b09f2d387567d06999c11c.1657643355.git.asml.silence@gmail.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | io_uring zerocopy send | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Clearly marked for net-next, async |
| netdev/apply | fail | Patch does not apply to net-next |
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 5b3559cb1d82..09f56bfa2771 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -1212,6 +1212,10 @@ struct ubuf_info *msg_zerocopy_realloc(struct sock *sk, size_t size, const u32 byte_limit = 1 << 19; /* limit to a few TSO */ u32 bytelen, next; + /* there might be non MSG_ZEROCOPY users */ + if (uarg->callback != msg_zerocopy_callback) + return NULL; + /* realloc only when socket is locked (TCP, UDP cork), * so uarg->len and sk_zckey access is serialized */
We should not append MSG_ZEROCOPY requests to skbuff with non MSG_ZEROCOPY ubuf_info, they might be not compatible. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> --- net/core/skbuff.c | 4 ++++ 1 file changed, 4 insertions(+)