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RDMA/cma: Rollback source IP address if failing to acquire device
authorMyungho Jung <mhjungk@gmail.com>
Thu, 10 Jan 2019 06:27:31 +0000 (22:27 -0800)
committerJason Gunthorpe <jgg@mellanox.com>
Mon, 14 Jan 2019 22:28:26 +0000 (15:28 -0700)
commit5fc01fb846bce8fa6d5f95e2625b8ce0f8e86810
treed218643d77b75d76abe8ad6cb9749b9c9c873c2c
parent97099cc6529cdf50af32a496b588d9428c57341f
RDMA/cma: Rollback source IP address if failing to acquire device

If cma_acquire_dev_by_src_ip() returns error in addr_handler(), the
device state changes back to RDMA_CM_ADDR_BOUND but the resolved source
IP address is still left. After that, if rdma_destroy_id() is called
after rdma_listen(), the device is freed without removed from
listen_any_list in cma_cancel_operation(). Revert to the previous IP
address if acquiring device fails.

Reported-by: syzbot+f3ce716af730c8f96637@syzkaller.appspotmail.com
Signed-off-by: Myungho Jung <mhjungk@gmail.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
drivers/infiniband/core/cma.c