On Tue, 25 Sep 2007 17:04:04 +0200,
Pierre-Yves Paulus <[email protected]> wrote:
> Hello,
>
> Putting the bluetooth system under load (opening and closing several
> rfcomm links off several USB adapters, and transmitting data over them),
> I got the Oops below. The computer hung completely, as you can see. Just
> before, I also got those warnings.
>
> I'm not sure if I'm providing the right and useful informations to allow
> fixing of those problems, as I'm definitely no expert. Please tell me if
> I do something the wrong way.
>
>
> WARNING: at lib/kref.c:33 kref_get()
> [<c01c537b>] kref_get+0x34/0x3d
> [<c01c484b>] kobject_get+0xf/0x13
> [<c0223b2f>] get_device+0xe/0x14
> [<c0223b48>] device_move+0x13/0xe2
> [<d02f4b78>] rfcomm_tty_close+0x23/0x61 [rfcomm]
> [<c020e0a4>] release_dev+0x1c0/0x54a
> [<d02f40c9>] rfcomm_dev_destruct+0x59/0x65 [rfcomm]
> [<d02f470c>] rfcomm_dev_ioctl+0x328/0x4e6 [rfcomm]
> [<c012a3a8>] autoremove_wake_function+0x0/0x35
> [<c02460bc>] release_sock+0xc/0x74
> [<c0243f4e>] sock_ioctl+0x19f/0x1be
> [<c020e435>] tty_release+0x7/0xa
> [<c015be91>] __fput+0x93/0x147
> [<c0159a39>] filp_close+0x51/0x58
> [<c015aad1>] sys_close+0x54/0x83
> [<c0103c72>] syscall_call+0x7/0xb
> =======================
This looks like some refcounting is messed up...
> # CONFIG_DEBUG_DRIVER is not set
> # CONFIG_DEBUG_KOBJECT is not set
Switching these two on may provide helpful information.
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