linux-kernel - Re: 2.6.18-rc1-mm2

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Message-Id: <200607142227.43769.rjw@sisk.pl>
Date:	Fri, 14 Jul 2006 22:27:43 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	"Michal Piotrowski" <michal.k.k.piotrowski@...il.com>
Cc:	"Andrew Morton" <akpm@...l.org>, linux-kernel@...r.kernel.org,
	linux-usb-devel@...ts.sourceforge.net,
	"Reuben Farrelly" <reuben-lkml@...b.net>
Subject: Re: 2.6.18-rc1-mm2

On Friday 14 July 2006 20:36, Michal Piotrowski wrote:
> Hi Andrew,
> 
> On 14/07/06, Andrew Morton <akpm@...l.org> wrote:
> > On Fri, 14 Jul 2006 13:36:08 +0200
> > "Rafael J. Wysocki" <rjw@...k.pl> wrote:
> >
> > > Unable to handle kernel NULL pointer dereference at 0000000000000038 RIP:
> > >  [<ffffffff8024a07b>] __lock_acquire+0x7b/0xd30
> > > PGD 0
> > > Oops: 0000 [1] PREEMPT
> > > last sysfs file: /devices/pci0000:00/0000:00:0a.0/subsystem_vendor
> > > CPU 0
> > > Modules linked in: ehci_hcd snd_page_alloc ip6t_REJECT xt_tcpudp i2c_nforce2 i2c_core ipt_REJECT xt_state ohci_hcd iptable_mangle iptable_n
> > > at ip_nat iptable_filter ip6table_mangle ip_conntrack ip_tables parport_pc lp ip6table_filter parport ip6_tables x_tables ipv6 dm_mod
> > > Pid: 110, comm: khubd Not tainted 2.6.18-rc1-mm2 #3
> > > RIP: 0010:[<ffffffff8024a07b>]  [<ffffffff8024a07b>] __lock_acquire+0x7b/0xd30
> > > RSP: 0018:ffff81005feb1c18  EFLAGS: 00010046
> > > RAX: 0000000000000002 RBX: 0000000000000246 RCX: 0000000000000000
> > > RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000030
> > > RBP: ffff81005feb1c88 R08: 0000000000000002 R09: 0000000000000000
> > > R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff8046e23f
> > > R13: 0000000000000000 R14: ffff81005fe92040 R15: 0000000000000030
> > > FS:  00002b0df5390b00(0000) GS:ffffffff808c0000(0000) knlGS:0000000000000000
> > > CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> > > CR2: 0000000000000038 CR3: 000000005dc35000 CR4: 00000000000006e0
> > > Process khubd (pid: 110, threadinfo ffff81005feb0000, task ffff81005fe92040)
> > > Stack:  0000000000000000 ffff81005fe92040 ffff81005febe7a8 ffffffff80470079
> > >  0000000200000000 0000000000000000 ffffffff80470038 0000000000000246
> > >  ffff81005a701680 0000000000000246 ffffffff8046e23f 0000000000000002
> > > Call Trace:
> > >  [<ffffffff8024b0bb>] lock_acquire+0x8b/0xc0
> > >  [<ffffffff8047193f>] _spin_lock+0x2f/0x40
> > >  [<ffffffff8046e23f>] klist_remove+0x1f/0x50
> > >  [<ffffffff803b9817>] bus_remove_device+0xa7/0xe0
> > >  [<ffffffff803b80f9>] device_del+0x149/0x180
> > >  [<ffffffff803d2d95>] usb_disconnect+0x105/0x150
> > >  [<ffffffff803d5cc6>] hub_thread+0x616/0xfd0
> > >  [<ffffffff80243809>] kthread+0xd9/0x110
> > >  [<ffffffff8020a316>] child_rip+0x8/0x12
> >
> > I seem to have made a programming mistake.
> >
> >
> 
> Thanks! Problem solved.

Confirmed.

Thanks,
Rafael
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