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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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