From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3DA0A144.8070301@us.ibm.com> Date: Sun, 06 Oct 2002 13:47:00 -0700 From: Dave Hansen MIME-Version: 1.0 Subject: Re: 2.5.40-mm2 References: <3DA0854E.CF9080D7@digeo.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: lkml , "linux-mm@kvack.org" , Ingo Molnar List-ID: Andrew Morton wrote: > Ingo said that his 2.4-based per-cpu-pages patch was beneficial to > specweb, but nobody has tested these patches with specweb. Hint. cc'ing Ingo, because I think this might be related to the timer bh removal. 2.5.40 doesn't last very long under Specweb. It always dies out with one of these oopses after a little while: CPU: 3 EIP: 0060:[<801204a9>] Not tainted EFLAGS: 00010006 EIP is at run_timer_tasklet+0xcd/0x13c eax: 00000000 ebx: 802657a8 ecx: e3c640a0 edx: 00000000 esi: e3c642c0 edi: 8039cae0 ebp: 00000246 esp: 8c3d9f20 ds: 0068 es: 0068 ss: 0068 Process swapper (pid: 0, threadinfo=8c3d8000 task=8c3dc760) Stack: 8c093188 00000000 8c3d8000 00000001 8011d2e5 00000000 00000001 80399960 fffffffe 00000060 8037e324 8037e324 8011cfea 80399960 0000000c 00000003 00000000 00000000 00000046 801111dd 8c3d8000 80105334 00000000 80107a8a Call Trace: [<8011d2e5>] tasklet_hi_action+0x85/0xe0 [<8011cfea>] do_softirq+0x5a/0xac [<801111dd>] smp_apic_timer_interrupt+0x111/0x118 [<80105334>] poll_idle+0x0/0x48 [<80107a8a>] apic_timer_interrupt+0x1a/0x20 [<80105334>] poll_idle+0x0/0x48 [<8010535d>] poll_idle+0x29/0x48 [<801053b3>] cpu_idle+0x37/0x48 [<801183ad>] printk+0x125/0x140 Code: 89 50 04 89 02 c7 06 00 00 00 00 c7 46 04 00 00 00 00 c7 46 I'll get a properly decoded one later. I think I just wrote over my old vmlinux. But, it looks to me like this is somewhere inside __run_timers() at kernel/timer.c :329, which looks something like this: list_del(&timer->entry); timer->base = NULL; #if CONFIG_SMP base->running_timer = timer; #endif kgdb kills this machine when kjournald is starting up. Time to try kdb. I _really_ hate this POS hardware. -- Dave Hansen haveblue@us.ibm.com -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/