Detaching USB stick crashes BETA4/BETA5

Alexandre "Sunny" Kovalenko Alex.Kovalenko at verizon.net
Tue Sep 21 17:22:51 PDT 2004


On Tue, 2004-09-21 at 07:09, Lutz Bichler wrote:
> On Tuesday 21 September 2004 06:59, you wrote:
> > This may be my fault.  Any chance you can give me a traceback?
> 
> I would like to, but i cannot get a crash dump. Tried the kernel debugger 
> (option DDB) an got the following trace:
> 
> db> trace
> kobj_delete(c1e2ab80,c068c6a0,c1e28180,cc726c2c,c04862e2) at kobj_delete+0x14
> device_delete_child(c1ef6c80, c1e2ab80,c16v4200,c16c4200,0) at 
> device_delete_child+0xb1
> usb_disconnect_port(c1f21870,c1ef6c80,cc726c50,c1614bc0,c1ef6c80) at 
> usb_disconnect_port+0xd2
> uhub_detach(c1ef6c80,c1578874,c067dfc4,c1ef6c80,0) at uhub_detach+0x7e
> device_detach(c1ef6c80,c1e2ab80,c1ef6b00,cc726ca8,c04862e2) at 
> device_detach+0x6a
> device_delete_child(c15b4880,c1ef6c80,c15bda80,c15bda80,3) at 
> device_delete_child+0x3f
> usb_disconnect_port(c15b4430,c15b4880,10,c04dca9c,c15ca210) at 
> usb_disconnect_port+0xd2
> uhub_explore(c15b8900,c15d3140,cc726d10,c0482e48,c15d3140) at 
> uhub_explore+0x1be
> usb_discover(c15d3140,0,5c,c065d8d9,1770) at usb_discover+0x35
> usb_event:_thread(c15d3140,cc726d48,0,0,0) at usb_event_thread+0x88
> fork_exit(c0482dc0,c15d3140,cc726d48) at fork_exit+0x80
> fork_trampoline() at for_trampoline+0x8
> --- trap 0x1, eip = 0, esp = 0xcc726d7c, ebp = 0 ---
> db>
> 
> Regards
>  Lutz
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I was able to get crash dump in the situation that looks similar to one
above and posted my explorations to this list (see "Re: usb hub
disconnect crashes 5.3-BETA4 hard"). If you think they are relevant or
useful, let me know and I can resend it to you privately. I am running
-current though.
---
Alexandre "Sunny" Kovalenko.



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