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SubjectRe: [PATCH] x86: split e820 reserved entries record to late v2


> I installed the kernel and it booted OK. There was a delay when my
> MTA (exim4) loaded, but that happens sometimes. However, I got a
> call trace I've never seen before. This could just be a fluke, but
> I'm passing it along in case it's meaningful. I grabbed the trace on
> TTY1 by logging in on TTY2 and using 'setterm -append 1':
>
> ===== SETTERM OUTPUT =====
> Clocksource tsc unstable (delta = -98677795 ns)
> NETDEV WATCHDOG: eth0 (r8169): transmit timed out
> ------------[ cut here ]------------
> WARNING: at net/sched/sch_generic.c:221 dev_watchdog+0x21e/0x250()
> Modules linked in: ipv6 cpufreq_userspace pcspkr 8250_pnp 8250 serial_core evdev
> Pid: 0, comm: swapper Not tainted 2.6.27-rc4.080829.yh-patches-tip #1
> Call Trace:
> [] warn_on_slowpath+0x64/0xb0
> [] printk+0x4e/0x5a
> [] lock_timer_base+0x34/0x70
> [] __mod_timer+0xb0/0xd0
> [] getnstimeofday+0x48/0xc0
> [] dev_watchdog+0x21e/0x250
> [] scheduler_tick+0xcf/0x220
> [] cascade+0x7b/0xa0
> [] dev_watchdog+0x0/0x250
> [] run_timer_softirq+0x13c/0x210
> [] ktime_get+0xc/0x50
> [] __do_softirq+0x73/0xf0
> [] call_softirq+0x1c/0x30
> [] do_softirq+0x35/0x70
> [] irq_exit+0x8d/0x90
> [] smp_apic_timer_interrupt+0x86/0xd0
> [] apic_timer_interrupt+0x66/0x70
> [] lapic_next_event+0x0/0x20
> [] default_idle+0x3a/0x40
> [] c1e_idle+0x34/0xe0
> [] cpu_idle+0x56/0xa0
> ---[ end trace 28095e4c2b529c2a ]---
> r8169: eth0: link up
> ===== END SETTERM OUTPUT =====
>
> Other than this strangeness, everything seems OK with your patches. This
> looks like some random networking annoyance to me, not really related to
> the regression patches, but I'll let better minds be the judge of that.


Update: this strangeness cannot be reproduced with a couple of reboots, so
I'm thinking it was just bad luck that it happened while testing your patches.


Thanks Yinghai,
DW


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