diff options
| author | Roland Dreier <roland@purestorage.com> | 2018-04-19 08:28:11 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-16 10:06:48 +0200 |
| commit | 28d459015ec550a8b7c991163a230ecc295ddef1 (patch) | |
| tree | 5f71e7f1eb5783a374b9eeb9ef9b940827ac9ee1 /drivers/infiniband | |
| parent | 4e2aa6460fca7a8b8cf7320efa2ecb91d1dd394c (diff) | |
RDMA/ucma: Allow resolving address w/o specifying source address
commit 09abfe7b5b2f442a85f4c4d59ecf582ad76088d7 upstream.
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: 2975d5de6428 ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/core/ucma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/core/ucma.c b/drivers/infiniband/core/ucma.c index ea3bc9bb1b7a..2b9c00faca7d 100644 --- a/drivers/infiniband/core/ucma.c +++ b/drivers/infiniband/core/ucma.c @@ -675,7 +675,7 @@ 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; |