Re: 2.6.21-rc2-mm1

Michal Piotrowski
2007-03-03T10:10:34Z

Andrew Morton napisał(a):
> On Sat, 03 Mar 2007 02:22:59 +0100
> Michal Piotrowski <michal.k.k.piotrowski@gmail.com> wrote:
>
>> Andrew Morton napisa__(a):
>>> On Sat, 3 Mar 2007 00:42:33 +0100
>>> "Michal Piotrowski" <michal.k.k.piotrowski@gmail.com> wrote:
>>>
>>>> On 02/03/07, Andrew Morton <akpm@linux-foundation.org> wrote:
>>>>> Temporarily at
>>>>>
>>>>> http://userweb.kernel.org/~akpm/2.6.21-rc2-mm1/
>>>>>
>>>> I have noticed some strange system behavior. When i try to build a
>>>> kernel (medium load) - X, keyboard, mouse and sound hangs.
>>>>
>>>> I can ping machine and I can use magic SysRq key, but that's all.
>>>>
>>>> 2.6.20-mm2 was fine, 2.6.21-rc2 works well (over 800 patches since
>>>> 2.6.20-mm2 - great...)
>>>>
>>>> NIL (Nothing Interesting in Logs)
>>>>
>>> Can we see the sysrq-T output please?
>>>
>> http://www.stardust.webpages.pl/files/tbf/bitis-gabonica/2.6.21-rc2-mm1/sys.log
>>
>
> Well that's all very dull - everything's just sitting there asleep.
>
> If it was just X then I'd suspect the psmouse changes (are you PS2 or USB?)
>
> Or I'd suspect that the entire interrupt system has gone bust, but you're
> still able to do sysrq.
>
> How are you doing sysrq, btw? Serial console? alt-F7 into a vgaconsole?

alt + sysrq + key, but alt + fX doesn't work

> Are you able to log in from another machine via ssh?

Yes.

>
> Are you able to log into it via ssh before it hangs and run things like
> `top' and `watch -n1 cat /proc/interrupts', see what they do when it hangs?

Everything stops.

top - 10:45:55 up 19 min, 2 users, load average: 2.73, 2.51, 1.61
Tasks: 169 total, 4 running, 165 sleeping, 0 stopped, 0 zombie
Cpu(s): 61.2%us, 21.9%sy, 0.0%ni, 16.0%id, 0.3%wa, 0.0%hi, 0.5%si, 0.0%st
Mem: 1985648k total, 1270908k used, 714740k free, 74424k buffers
Swap: 4192956k total, 0k used, 4192956k free, 849936k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3656 michal 15 0 293m 91m 27m S 44 4.7 5:53.77 firefox-bin
14683 michal 25 0 22756 18m 3876 R 22 1.0 0:00.66 cc1
3191 root 16 0 170m 20m 6640 R 21 1.0 2:26.46 Xorg
[..]

>
> Is the CPU idle when it hangs, or is it busy? If busy, what does sysrq-P
> say?
>
>

Pid: 3716, comm: firefox-bin
EIP: 0073:[<b23bb9d1>] CPU: 0
EIP is at 0xb23bb9d1
ESP: 007b:afdfd1d0 EFLAGS: 00000202 Not tainted (2.6.21-rc2-mm1 #23)
EAX: 00000001 EBX: b25ee12c ECX: 00000018 EDX: 00000018
ESI: 0944e91c EDI: 0944e900 EBP: afdfd398 DS: 007b ES: 007b FS: 0000
CR0: 8005003b CR2: 40954000 CR3: 32bdc000 CR4: 000006d0
[<c0105256>] show_trace_log_lvl+0x1a/0x2f
[<c010597b>] show_trace+0x12/0x14
[<c0102acf>] show_regs+0x181/0x188
[<c0261010>] sysrq_handle_showregs+0x12/0x14
[<c0260f47>] __handle_sysrq+0x8c/0x109
[<c0261122>] handle_sysrq+0x1f/0x21
[<c025bd6e>] kbd_event+0x2d8/0x4ee
[<c02bcae2>] input_event+0x420/0x442
[<c02c01b0>] atkbd_interrupt+0x448/0x514
[<c02b986e>] serio_interrupt+0x49/0x7f
[<c02ba6a8>] i8042_interrupt+0x226/0x239
[<c0155642>] handle_IRQ_event+0x1a/0x46
[<c015675a>] handle_edge_irq+0x10a/0x14e
[<c0106c22>] do_IRQ+0xa3/0xbd
[<c0104c52>] common_interrupt+0x2e/0x34
=======================

Regards,
Michal

--
Michal K. K. Piotrowski
LTG - Linux Testers Group (PL)
(http://www.stardust.webpages.pl/ltg/)
LTG - Linux Testers Group (EN)
(http://www.stardust.webpages.pl/linux_testers_group_en/)