Re: 2.6.21-rc5-mm4

[Kok, Auke]

Jiri Kosina wrote:
> On Tue, 3 Apr 2007, Kok, Auke wrote:
>
> > Also, it would help a lot if you knew what kind of settings your init 
> > scripts are trying to configure. It seems that something is setting 
> > multicast or promiscuous mode. Do you happen to know which command is 
> > being executed by the shell?
>
> It's 100% reproducible by running dhclient on the interface.
>
> The kernel also panics (with different stacktrace but the same wrong 
> address it tries to dereference - 0xffffffff) when I do this:
>
> (none):/# modprobe e1000
> Intel(R) PRO/1000 Network Driver - version 7.4.35-k2-NAPI
> Copyright (c) 1999-2007 Intel Corporation.
> ACPI: PCI Interrupt 0000:02:00.0[A] -> GSI 16 (level, low) -> IRQ 16
> e1000: 0000:02:00.0: e1000_probe: (PCI Express:2.5Gb/s:Width x1) 
> 00:0e:0c:72:b8:ad
> e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
> (none):/# ifconfig eth0 up
> BUG: unable to handle kernel paging request at virtual address ffffffff
>  printing eip:
> ffffffff
> *pde = 00005067
> *pte = 00000000
> Oops: 0000 [#1]
> SMP
> last sysfs file: power/resume
> Modules linked in: e1000 ext3 mbcache jbd edd sg fan generic ata_piix 
> libata thermal processor sd_mod scsi_mod ide_disk ide_core
> CPU:    0
> EIP:    0060:[<ffffffff>]    Not tainted VLI
> EFLAGS: 00010046   (2.6.21-rc5-mm4-default #3)
> EIP is at 0xffffffff
> eax: 00000000   ebx: 00000000   ecx: 00000000   edx: 00000000
> esi: 00000000   edi: c0462008   ebp: 00000080   esp: c0463f94
> ds: 007b   es: 007b   fs: 00d8  gs: 0000  ss: 0068
> Process swapper (pid: 0, ti=c0462000 task=c038d340 task.ti=c0462000)
> Stack: c0102297 00000060 00000246 00000000 c049f5a4 c1d095a4 c01023fa c0363b12
>        20070126 c1d11000 c0467ae7 c034a48a c04671b9 00000000 00000000 00000000
>        00000000 00010000 00000000 00000000 00000000 c04887c0 00020800 00099800
> Call Trace:
>  [<c0102297>] mwait_idle_with_hints+0x3b/0x3f
>  [<c01023fa>] cpu_idle+0xa6/0xbf
>  [<c0467ae7>] start_kernel+0x459/0x461
>  [<c04671b9>] unknown_bootoption+0x0/0x202
>  =======================
> INFO: lockdep is turned off.
> Code:  Bad EIP value.
> EIP: [<ffffffff>] 0xffffffff SS:ESP 0068:c0463f94
> Kernel panic - not syncing: Attempted to kill the idle task!
>
>
> Seeing "mwait" there, it seemed like ACPI might be involved. Booting with 
> acpi=off didn't improve the situation though.
>
> I just pulled your e1000 git tree into vanilla 2.6.21-rc5 ytrr and I can't 
> reproduce the problem, so it might be caused by something else.

we're also having problems reproducing it on that same combination (2.6.21-rc4 + 
my tree), so it points to something in -mm. Since your trace is completely 
different right now it looks like something else is fuzzing it up.

Since the e1000 changes are in rc5-mm3 as well, that might help to narrow it 
down quickly.

Auke
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