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Date:	Tue, 17 Jul 2007 15:58:47 +0200
From:	Thomas Müller <thomas@...htm.de>
To:	linux-kernel@...r.kernel.org
CC:	netdev@...r.kernel.org
Subject: [BUG] System hangs on boot when trying to bring up r8169 nic

Hi,

if I try to boot 2.6.21.6, 2.6.22.1 or 2.6.22-git8 the system always
completely hangs when init tries to bring up my r8169-based NIC. Not
even the keyboard lights are working anymore.

If I unplug the network cable, boot continues just fine and everything
works as it should.

If I boot with the cable unplugged, the system also hangs and continues
after I plug in the cable.


Everything works fine with 2.6.20.15.


Using a Fedora kernel (based on 2.6.21.5) I get the following kernel
message:
r8169: eth0: link down
BUG: soft lockup detected on CPU#0!
 [<c0451ea2>] softlockup_tick+0xa5/0xb4
 [<c042e930>] update_process_times+0x3b/0x5e
 [<c043d298>] tick_sched_timer+0x57/0x9a
 [<c0439df5>] hrtimer_interrupt+0x12b/0x1b6
 [<c043d241>] tick_sched_timer+0x0/0x9a
 [<c0408534>] timer_interrupt+0x2c/0x32
 [<c045210e>] handle_IRQ_event+0x1a/0x3f
 [<c045354e>] handle_level_irq+0x81/0xc7
 [<c04072c7>] do_IRQ+0xb8/0xd1
 [<c04058ff>] common_interrupt+0x23/0x28
 [<c0452105>] handle_IRQ_event+0x11/0x3f
 [<c045354e>] handle_level_irq+0x81/0xc7
 [<c04534cd>] handle_level_irq+0x0/0xc7
 [<c04072bb>] do_IRQ+0xac/0xd1
 [<c04058ff>] common_interrupt+0x23/0x28
 [<c042b2dc>] __do_softirq+0x54/0xba
 [<c04071b7>] do_softirq+0x59/0xb1
 [<c04534cd>] handle_level_irq+0x0/0xc7
 [<c042b194>] irq_exit+0x38/0x6b
 [<c04072cc>] do_IRQ+0xbd/0xd1
 [<c04058ff>] common_interrupt+0x23/0x28
 [<c04200d8>] find_busiest_group+0x264/0x4c5
 [<c0601895>] _spin_unlock_irqrestore+0x8/0x9
 [<c042e863>] __mod_timer+0xa1/0xab
 [<f8a4e1ec>] rtl8169_open+0x12e/0x194 [r8169]
 [<c05a3054>] dev_open+0x2b/0x62
 [<c05a1aa1>] dev_change_flags+0x47/0xe4
 [<c05de45c>] devinet_ioctl+0x250/0x56a
 [<c04e72c0>] copy_to_user+0x3c/0x50
 [<c0598b47>] sock_ioctl+0x19f/0x1be
 [<c05989a8>] sock_ioctl+0x0/0x1be
 [<c047f713>] do_ioctl+0x1f/0x62
 [<c047f99a>] vfs_ioctl+0x244/0x256
 [<c047f9f8>] sys_ioctl+0x4c/0x64
 [<c0404f70>] syscall_call+0x7/0xb
 =======================
r8169: eth0: link up



There alread is a bugzilla entry at
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=242572
I know, not everyone is a fan of bugzilla, but maybe someone wants to
take a look at what was discussed there.


Please CC me as I'm not subscribed to the list and don't hesitate to
tell me that I forgot to include some crucial information ;)


Regards,
Thomas


View attachment "config_2.6.20.15_fc6based" of type "text/plain" (75028 bytes)

View attachment "config_2.6.21.6_f7based" of type "text/plain" (73126 bytes)

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