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SubjectRe: 2.6.12-rc2-mm3
Date
Benjamin Herrenschmidt <benh@kernel.crashing.org> writes:

> On Tue, 2005-04-12 at 03:18 +0200, Juergen Kreileder wrote:
>> Andrew Morton <akpm@osdl.org> writes:
>>
>>> ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.12-rc2/2.6.12-rc2-mm3/
>>
>> I'm getting frequent lockups on my PowerMac G5 with rc2-mm3.
>>
>> 2.6.11-mm4 works fine but all 2.6.12 versions I've tried (all since
>> -rc1-mm3) lock up randomly. The easiest way to reproduce the
>> problem seems to be running Azareus. So it might be network
>> related, but I'm not 100% sure about that, there was a least one
>> deadlock with virtually no network usage.
>
> Hrm... I just noticed you have CONFIG_PREEMPT enabled... Can you
> test without it and let me know if it makes a difference ?

IIRC I had disabled that for rc2-mm2 and it didn't make a difference.
I'll disable it again when I try older versions.

I just got another crash with rc2-mm3. The crash was a bit different
this time, I still could move the mouse pointer and the logs contained
some info:

Badness in slb_flush_and_rebolt at arch/ppc64/mm/slb.c:52
[c00000017690b860] [0000000000069a73] 0x69a73 (unreliable)
[c00000017690b900] [c00000000003b300] .__schedule_tail+0x9c/0x1b4
[c00000017690b9a0] [c0000000003162b0] .schedule+0x324/0x610
[c00000017690ba80] [c0000000003177e8] .schedule_timeout+0xfc/0x104
[c00000017690bb60] [c0000000000b6118] .do_select+0x278/0x4c4
[c00000017690bcb0] [c0000000000d6f4c] .compat_sys_select+0x390/0x690
[c00000017690bdc0] [c000000000019eb8] .ppc32_select+0x14/0x28
[c00000017690be30] [c00000000000da00] syscall_exit+0x0/0x18
Badness in slb_flush_and_rebolt at arch/ppc64/mm/slb.c:52
Call Trace:
[c00000016fe23860] [0000000000000413] 0x413 (unreliable)
[c00000016fe23900] [c00000000003b300] .__schedule_tail+0x9c/0x1b4
[c00000016fe239a0] [c0000000003162b0] .schedule+0x324/0x610
[c00000016fe23a80] [c000000000317774] .schedule_timeout+0x88/0x104
[c00000016fe23b60] [c0000000000b6118] .do_select+0x278/0x4c4
[c00000016fe23cb0] [c0000000000d6f4c] .compat_sys_select+0x390/0x690
[c00000016fe23dc0] [c000000000019eb8] .ppc32_select+0x14/0x28
[c00000016fe23e30] [c00000000000da00] syscall_exit+0x0/0x18
Badness in slb_flush_and_rebolt at arch/ppc64/mm/slb.c:52
Call Trace:
[c000000175d2b860] [0000000000000163] 0x163 (unreliable)
[c000000175d2b900] [c00000000003b300] .__schedule_tail+0x9c/0x1b4
[c000000175d2b9a0] [c0000000003162b0] .schedule+0x324/0x610
[c000000175d2ba80] [c000000000317774] .schedule_timeout+0x88/0x104
[c000000175d2bb60] [c0000000000b6118] .do_select+0x278/0x4c4
[c000000175d2bcb0] [c0000000000d6f4c] .compat_sys_select+0x390/0x690
[c000000175d2bdc0] [c000000000019eb8] .ppc32_select+0x14/0x28
[c000000175d2be30] [c00000000000da00] syscall_exit+0x0/0x18
Badness in slb_flush_and_rebolt at arch/ppc64/mm/slb.c:52
Call Trace:
[c000000178a17860] [0000000000000eb1] 0xeb1 (unreliable)
[c000000178a17900] [c00000000003b300] .__schedule_tail+0x9c/0x1b4
[c000000178a179a0] [c0000000003162b0] .schedule+0x324/0x610
[c000000178a17a80] [c000000000317774] .schedule_timeout+0x88/0x104
[c000000178a17b60] [c0000000000b6118] .do_select+0x278/0x4c4
[c000000178a17cb0] [c0000000000d6f4c] .compat_sys_select+0x390/0x690
[c000000178a17dc0] [c000000000019eb8] .ppc32_select+0x14/0x28
[c000000178a17e30] [c00000000000da00] syscall_exit+0x0/0x18
Badness in slb_flush_and_rebolt at arch/ppc64/mm/slb.c:52
Call Trace:
[c0000001767fba10] [0000000000001bca] 0x1bca (unreliable)

and so on until the machine switched into jet-fighter mode after:

[c00000016f887a10] [000000000001fc8c] 0x1fc8c (unreliable)
[c00000016f887ab0] [c00000000003b300] .__schedule_tail+0x9c/0x1b4
[c00000016f887b50] [c0000000003162b0] .schedule+0x324/0x610
[c00000016f887c30] [c000000000317774] .schedule_timeout+0x88/0x104
[c00000016f887d10] [c0000000000b6bb4] .sys_poll+0x3b8/0x4dc
[c00000016f887e30] [c00000000000da00] syscall_exit+0x0/0x18
Oops: Machine check, sig: 0 [#1]


Machine info:
* PowerMac7,2 with 2x 2GHz
* 4GB RAM
* 2 disks with ext3 partitions on top of LVM2
* Radeon 9800Pro with radeonfb and X (from Debian sid) at 1600x1200
* USB Mouse via evdev
* Bluetooth enabled but unused
* Firewire disabled
* No PCI cards
* Kernel compiled with gcc-3.4.2


Juergen

--
Juergen Kreileder, Blackdown Java-Linux Team
http://blog.blackdown.de/
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