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  • Yinghai Lu's avatar
    PCI: fix memleak when ACPI _CRS is not used. · 1cc1c96c
    Yinghai Lu authored
    
    
    warning:
    unreferenced object 0xffff8801f6914200 (size 512):
      comm "swapper/0", pid 1, jiffies 4294893643 (age 2664.644s)
      hex dump (first 32 bytes):
        00 00 c0 fe 00 00 00 00 ff ff ff ff 00 00 00 00  ................
        60 58 2f f6 03 88 ff ff 00 02 00 00 00 00 00 00  `X/.............
      backtrace:
        [<ffffffff81c2408c>] kmemleak_alloc+0x26/0x43
        [<ffffffff8113764f>] __kmalloc+0x121/0x183
        [<ffffffff81ca8d93>] get_current_resources+0x5a/0xc6
        [<ffffffff81c5bedd>] pci_acpi_scan_root+0x13c/0x21c
        [<ffffffff81c2a745>] acpi_pci_root_add+0x1e1/0x421
        [<ffffffff81408f50>] acpi_device_probe+0x50/0x190
        [<ffffffff8149edc7>] really_probe+0x99/0x126
        [<ffffffff8149ef83>] driver_probe_device+0x3b/0x56
        [<ffffffff8149effd>] __driver_attach+0x5f/0x82
        [<ffffffff8149d860>] bus_for_each_dev+0x5c/0x88
        [<ffffffff8149eb87>] driver_attach+0x1e/0x20
        [<ffffffff8149e7cc>] bus_add_driver+0xca/0x21d
        [<ffffffff8149f47b>] driver_register+0x91/0xfe
        [<ffffffff81409d09>] acpi_bus_register_driver+0x43/0x45
        [<ffffffff8278bdc9>] acpi_pci_root_init+0x20/0x28
        [<ffffffff810001e7>] do_one_initcall+0x57/0x134
    
    The system has _CRS for root buses, but they are not used because the machine
    date is before the cutoff date for _CRS usage.
    
    Try to free those unused resource arrays and names.
    
    Reviewed-by: default avatarBjorn Helgaas <bhelgaas@google.com>
    Signed-off-by: default avatarYinghai Lu <yinghai@kernel.org>
    Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
    1cc1c96c