linux-kernel - WARNING: at kernel/resource.c:189 __release

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Message-ID: <4745F77C.7040402@gmail.com>
Date:	Thu, 22 Nov 2007 22:41:16 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Matthew Wilcox <matthew@....cx>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...e.de>,
	linux-usb-devel@...ts.sourceforge.net,
	linux-pm@...ts.linux-foundation.org
Subject: WARNING: at kernel/resource.c:189 __release_resource

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

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

regards,
-- 
Jiri Slaby (jirislaby@...il.com)
Faculty of Informatics, Masaryk University
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