RDMA/ucma: Allow resolving address w/o specifying source address
The RDMA CM will select a source device and address by consulting
the routing table if no source address is passed into
rdma_resolve_address(). Userspace will ask for this by passing an
all-zero source address in the RESOLVE_IP command. Unfortunately
the new check for non-zero address size rejects this with EINVAL,
which breaks valid userspace applications.
Fix this by explicitly allowing a zero address family for the source.
Fixes: 2975d5de64
("RDMA/ucma: Check AF family prior resolving address")
Cc: <stable@vger.kernel.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
parent
8b77586bd8
commit
09abfe7b5b
|
@ -700,7 +700,7 @@ static ssize_t ucma_resolve_ip(struct ucma_file *file,
|
|||
if (copy_from_user(&cmd, inbuf, sizeof(cmd)))
|
||||
return -EFAULT;
|
||||
|
||||
if (!rdma_addr_size_in6(&cmd.src_addr) ||
|
||||
if ((cmd.src_addr.sin6_family && !rdma_addr_size_in6(&cmd.src_addr)) ||
|
||||
!rdma_addr_size_in6(&cmd.dst_addr))
|
||||
return -EINVAL;
|
||||
|
||||
|
|
Loading…
Reference in a new issue