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authorRoland Dreier <roland@purestorage.com>2018-04-03 15:33:01 -0700
committerJason Gunthorpe <jgg@mellanox.com>2018-04-03 21:06:14 -0600
commit8435168d50e66fa5eae01852769d20a36f9e5e83 (patch)
treea721c193594199bf9b311d99761df90a00543996 /drivers/infiniband/hw
parentIB/qedr: Remove GID add/del dummy routines (diff)
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RDMA/ucma: Don't allow setting RDMA_OPTION_IB_PATH without an RDMA device
Check to make sure that ctx->cm_id->device is set before we use it. Otherwise userspace can trigger a NULL dereference by doing RDMA_USER_CM_CMD_SET_OPTION on an ID that is not bound to a device. Cc: <stable@vger.kernel.org> Reported-by: <syzbot+a67bc93e14682d92fc2f@syzkaller.appspotmail.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
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