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Date: Thu, 22 Mar 2007 10:04:46 +0100 From: Oliver Neukum <oneukum@...e.de> To: linux-usb-devel@...ts.sourceforge.net Cc: Greg KH <gregkh@...e.de>, Jeremy Fitzhardinge <jeremy@...p.org>, Kevin Lloyd <linux@...rrawireless.com>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Kevin Lloyd <klloyd@...rrawireless.com> Subject: Re: [linux-usb-devel] 2.6.21-rc4: NULL pointer dereference oops when unplugging sierra device Am Mittwoch, 21. März 2007 22:53 schrieb Greg KH: > > EIP is at sierra_shutdown+0x3a/0x113 [sierra] > > eax: 00000000 ebx: 00000000 ecx: 00000000 edx: f8e52c9d > > esi: 00000000 edi: e889fa1c ebp: e84c0e2c esp: e84c0e0c > > ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068 > > Process pppd (pid: 3847, ti=e84c0000 task=e8553550 task.ti=e84c0000) > > Stack: 00000002 e84c0e18 c01cfda8 e84c0e20 c0240431 e889fa1c 00000003 e8a79d00 > > e84c0e50 f8e219e4 f8e5212d 00000021 00000000 00000000 00000000 e889fa50 > > f8e21956 e84c0e70 c01d099a e84c0e78 f8e52c58 e84c0e6c f6c5576c f6c55760 > > Call Trace: > > [<c0104e98>] show_trace_log_lvl+0x1a/0x2f > > [<c0104f4a>] show_stack_log_lvl+0x9d/0xa5 > > [<c0105114>] show_registers+0x1c2/0x293 > > [<c0105307>] die+0x122/0x224 > > [<c030fe69>] do_page_fault+0x505/0x5e1 > > [<c030e5c4>] error_code+0x7c/0x84 > > [<f8e219e4>] destroy_serial+0x8e/0x124 [usbserial] > > [<c01d099a>] kref_put+0x63/0x71 > > [<f8e217f0>] usb_serial_put+0x10/0x12 [usbserial] > > [<f8e2194e>] serial_close+0xb6/0xbe [usbserial] This looks like the "shutdown called too late bug". Does the patch included here help: http://lkml.org/lkml/2007/3/13/217 Regards Oliver - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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