Message-ID: <4B4EC0A1.3090503@pardus.org.tr>
Date: Thu, 14 Jan 2010 08:58:41 +0200
From: =?UTF-8?B?T3phbiDDh2HEn2xheWFu?= <ozan@pardus.org.tr>
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CC: hpa@zytor.com, mingo@elte.hu, yinghai@kernel.org, a.p.zijlstra@chello.nl
Subject: Re: Boot hangs after "Freeing initrd memory" with 2.6.31.11
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Ozan Çağlayan wrote On 13-01-2010 20:51:

(CC'ing relevant people)

> Hi,
> 
> A lot of our users complains about the problem in $subject. Here are some clues:
> 
> - All users have mainboards with nForce2 chipset:
>   nVidia Corporation nForce2 IGP2 [10de:01e0] (rev c1)
> - The last working kernel for them is 2.6.30.9. They can't boot into 2.6.31.9-11,
> - They all tried several boot parameters to disable acpi, lapic, mce, etc. none of them works,
> 

I just made them boot with:

bootmem_debug debug debugpat dynamic_printk earlyprintk=vga initcall_debug
loglevel=7 mminit_loglevel=4 pnp.debug sched_debug apic=debug

and we had more relevant messages:

TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
initcall inet_init+0x0/0x199 returned 0 after 3585 usecs
calling af_unix_init+0x0/0x47 @ 1
NET: Registered protocol family 1
initcall af_unix_init+0x0/0x47 returned 0 after 101 usecs
calling populate_rootfs+0x0/0x62 @ 1
Unpacking initramfs...
Freeing initrd memory: 5109k freed
initcall populate_rootfs+0x0/0x62 returned 0 after 215338 usecs
calling i8259A_init_sysfs+0x0/0x1d @ 1
initcall i8259A_init_sysfs+0x0/0x1d returned 0 after 42 usecs
calling sbf_init+0x0/0xda @ 1
initcall sbf_init+0x0/0xda returned 0 after 0 usecs
calling i8237A_init_sysfs+0x0/0x1d @ 1
initcall i8237A_init_sysfs+0x0/0x1d returned 0 after 13 usecs
calling add_rtc_cmos+0x0/0x94 @ 1
initcall add_rtc_cmos+0x0/0x94 returned 0 after 4 usecs
calling cache_sysfs_init+0x0/0x55 @ 1
initcall cache_sysfs_init+0x0/0x55 returned 0 after 64 usecs
calling cpu_debug_init+0x0/0xe3 @ 1

and it hangs. Not that this is the place where on 2.6.30.9 it continues with:

[    0.404102] cpu0(1) debug files 5 <--
[    0.404109] Machine check exception polling timer started.
[    0.404119] cpufreq-nforce2: Detected nForce2 chipset revision C1
[    0.404122] cpufreq-nforce2: FSB changing is maybe unstable and can lead to
crashes and data loss.
[    0.404135] cpufreq-nforce2: FSB currently at 167 MHz, FID 11.5
[    0.404155] ondemand governor failed, too long transition latency of HW,
fallback to performance governor

The users all have an AMD Athlon XP series processor. There are 576 changes in arch/x86/kernel and 291
in arch/x86/kernel/cpu between 2.6.30 and 2.6.31. Need some hands where to start to debug the problem.

Regards,
Ozan Caglayan
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