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    SubjectRe: WARNING: at kernel/resource.c:189 __release_resource
    On Thu, 22 Nov 2007 22:41:16 +0100 Jiri Slaby <jirislaby@gmail.com> wrote:

    > Hi,
    >
    > Step aside. What's the purpose of having two similar patches for one issue,
    > it then warns about the same thing twice:
    > make-sure-nobodys-leaking-resources.patch
    > releasing-resources-with-children.patch

    Oh well. It's better than having none. Matthew, could you have think
    about something for mainline please?

    > Ok, I hit the bug, suspend of 00:06 device complains about it:
    > WARNING: at .../kernel/resource.c:185 __release_resource()
    >
    > Call Trace:
    > [<ffffffff8023f7b5>] release_resource+0xb5/0xf0
    > [<ffffffff8036cda0>] pnp_release_resources+0x70/0x130
    > [<ffffffff8036db85>] pnp_stop_dev+0x45/0x90
    > [<ffffffff8036c942>] pnp_bus_suspend+0x92/0xb0
    > [<ffffffff803b9f73>] suspend_device+0x113/0x180
    > [<ffffffff803ba330>] device_suspend+0x200/0x320
    > [<ffffffff80266905>] suspend_devices_and_enter+0xa5/0x170
    > [<ffffffff80266bd9>] enter_state+0x209/0x270
    > [<ffffffff80266cef>] state_store+0xaf/0xf0
    > [<ffffffff8032ca67>] kobj_attr_store+0x17/0x20
    > [<ffffffff802e459e>] sysfs_write_file+0xce/0x140
    > [<ffffffff80299cc7>] vfs_write+0xc7/0x170
    > [<ffffffff8029a360>] sys_write+0x50/0x90
    > [<ffffffff8020bcde>] system_call+0x7e/0x83
    >
    > # LANG=en ll /sys/devices/pnp0/00:06/
    > total 0
    > lrwxrwxrwx 1 root root 0 Nov 22 22:35 driver -> ../../../bus/pnp/drivers/serial
    > -r--r--r-- 1 root root 4096 Nov 22 22:35 id
    > -r--r--r-- 1 root root 4096 Nov 22 22:35 options
    > drwxr-xr-x 2 root root 0 Nov 22 22:35 power
    > -rw-r--r-- 1 root root 4096 Nov 22 22:35 resources
    > lrwxrwxrwx 1 root root 0 Nov 22 22:35 subsystem -> ../../../bus/pnp
    > drwxr-xr-x 3 root root 0 Nov 22 22:35 tty
    > -rw-r--r-- 1 root root 4096 Nov 22 22:35 uevent
    >

    I suppose that's a genuine leak, presumably in 8250_pnp.
    -
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