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During device setup, msix_setup_entries() and msi_setup_entry() allocate msi_desc by calling alloc_msi_entry(). alloc_msi_entry() can also allocate a affinity cpumask. During device teardown free_msi_irqs() is called and the msi_desc is freed, but the affinity cpumask is leaked. Fix it by calling free_msi_entry() which frees both the msi_desc and the affinity cpumask. [bhelgaas:aa48b6f708("genirq/MSI: Move alloc_msi_entry() from PCI into generic MSI code") moved alloc_msi_entry() from drivers/pci/msi.c to kernel/irq/msi.c and added a new corresponding free_msi_entry() interface. Afteraa48b6f708, pci/msi.c used alloc_msi_entry(), but did its own kfree() instead of using free_msi_entry().28f4b04143("genirq/msi: Add cpumask allocation to alloc_msi_entry") added affinity to both alloc_msi_entry() and free_msi_entry(), but pci/msi.c didn't use free_msi_entry(), resulting in this leak.] Fixes:aa48b6f708("genirq/MSI: Move alloc_msi_entry() from PCI into generic MSI code") Signed-off-by: Prarit Bhargava <prarit@redhat.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Myron Stowe <mstowe@redhat.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.