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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>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.