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[ Upstream commit 304ee43238fed517faa123e034b593905b8679f8 ] In SLI-4, when performing a mailbox command with MBX_POLL, the driver uses the BMBX register to send the command rather than the MQ. A flag is set indicating the BMBX register is active and saves the mailbox job struct (mboxq) in the mbox_active element of the adapter. The routine then waits for completion or timeout. The mailbox job struct is not freed by the routine. In cases of timeout, the adapter will be reset. The lpfc_sli_mbox_sys_flush() routine will clean up the mbox in preparation for the reset. It clears the BMBX active flag and marks the job structure as MBX_NOT_FINISHED. But, it never frees the mboxq job structure. Expectation in both normal completion and timeout cases is that the issuer of the mbx command will free the structure. Unfortunately, not all calling paths are freeing the memory in cases of error. All calling paths were looked at and updated, if missing, to free the mboxq memory regardless of completion status. Link: https://lore.kernel.org/r/20210412013127.2387-7-jsmart2021@gmail.com Co-developed-by: Justin Tee <justin.tee@broadcom.com> Signed-off-by: Justin Tee <justin.tee@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.