From: Oliver Neukum <oneukum@suse.de>
To: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>,
linux-usb@vger.kernel.org
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Oliver Neukum <oliver@neukum.name>,
"Greg Kroah-Hartman" <gregkh@suse.de>
Subject: Re: [2.6.39] crash in acm_ctrl_msg+0x16/0x59
Date: Mon, 30 May 2011 07:54:14 +0200 [thread overview]
Message-ID: <201105300754.14490.oneukum@suse.de> (raw)
In-Reply-To: <4DE25252.7050503@gmail.com>
Am Sonntag, 29. Mai 2011, 16:04:02 schrieb Riccardo Magliocchetti:
> mtp-probe: bus: 6, device: 4 was not an MTP device
> [20462.901834] cdc_acm 6-1:1.0: ttyACM0: USB ACM device
> [20462.904417] usbcore: registered new interface driver cdc_acm
> [20462.904420] cdc_acm: v0.26:USB Abstract Control Model driver for USB
> modems and ISDN adapters
> [20463.624142] usb 6-1: USB disconnect, device number 4
> [20463.641859] CPU 0
>
> This is the stracktrace:
>
> acm_ctrl_msg+0x16/0x59
> mutex_lock+0x13/0x2a
> acm_port_down+0x4c/0xcb
> acm_tty_close+0x75/0x93
> tty_release+0x1b5/0x47c
> ? compat_do_readv_write+0x199/0x1ae
> fput+0xf8/0x1ad
> filp_close+0x69/0x75
> sys_close+0x8a/0xea
> sysenter_dispatch+0x07/0x32
So we are trying to talk to a device that is already gone.
Is there anything unusual about your device? Could you
post "lsusb -v"?
Regards
Oliver
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next prev parent reply other threads:[~2011-05-30 7:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-29 14:04 [2.6.39] crash in acm_ctrl_msg+0x16/0x59 Riccardo Magliocchetti
2011-05-30 5:54 ` Oliver Neukum [this message]
2011-05-30 9:19 ` Riccardo Magliocchetti
2011-05-30 19:32 ` Riccardo Magliocchetti
2011-05-31 8:37 ` Oliver Neukum
2011-06-01 7:05 ` Riccardo Magliocchetti
2011-06-01 7:34 ` Oliver Neukum
2011-06-01 18:04 ` Riccardo Magliocchetti
2011-06-02 19:34 ` Oliver Neukum
2011-06-03 7:06 ` Riccardo Magliocchetti
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