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[ Upstream commit 7cfd5639d99bec0d27af089d0c8c114330e43a72 ] If the driver receives a login that is later then LOGO'd by the remote port (aka ndlp), the driver, upon the completion of the LOGO ACC transmission, will logout the node and unregister the rpi that is being used for the node. As part of the unreg, the node's rpi value is replaced by the LPFC_RPI_ALLOC_ERROR value. If the port is subsequently offlined, the offline walks the nodes and ensures they are logged out, which possibly entails unreg'ing their rpi values. This path does not validate the node's rpi value, thus doesn't detect that it has been unreg'd already. The replaced rpi value is then used when accessing the rpi bitmask array which tracks active rpi values. As the LPFC_RPI_ALLOC_ERROR value is not a valid index for the bitmask, it may fault the system. Revise the rpi release code to detect when the rpi value is the replaced RPI_ALLOC_ERROR value and ignore further release steps. Link: https://lore.kernel.org/r/20191105005708.7399-2-jsmart2021@gmail.com Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org> |
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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.