On Thu, 2005-10-20 at 21:16 +0200, Ingo Molnar wrote:
> * Fernando Lopez-Lezcano <[email protected]> wrote:
>
> > > indeed - and this could explain some of the lockups reported. I've
> > > uploaded -rt10 with your fix included.
> >
> > No lockups so far with -rt12 (running for 1/2 a day already).
> >
> > I'm getting BUG messages again, some examples below...
>
> would be interesting to check whether the cycle_t u64 fix in -rt14 gets
> rid of these BUG messages.
Found this on the logs:
Oct 20 15:52:57 cmn3 kernel: BUG in hydrogen:4810, ktimer expired short
without user signal!:
Oct 20 15:52:57 cmn3 kernel: expires: 2289/357933580
Oct 20 15:52:57 cmn3 kernel: expired: 2289/357891080
Oct 20 15:52:57 cmn3 kernel: at line: 942
Oct 20 15:52:57 cmn3 kernel: interval: 0/0
Oct 20 15:52:57 cmn3 kernel: now: 2289/357891595
Oct 20 15:52:57 cmn3 kernel: rem: 0/42500
Oct 20 15:52:57 cmn3 kernel: overrun: 0
Oct 20 15:52:57 cmn3 kernel: getoffset: 00000000
Oct 20 15:52:57 cmn3 kernel: hydrogen/4810[CPU#1]: BUG in
check_ktimer_signal at kernel/ktimers.c:1305
Oct 20 15:52:57 cmn3 kernel: [<c01280a7>] __WARN_ON+0x67/0x90 (8)
Oct 20 15:52:57 cmn3 kernel: [<c0141fac>] check_ktimer_signal
+0x17c/0x190 (48)
Oct 20 15:52:57 cmn3 kernel: [<c0142069>] __ktimer_nanosleep+0xa9/0xf0
(56)
Oct 20 15:52:57 cmn3 kernel: [<c01420eb>] ktimer_nanosleep+0x3b/0x50
(56)
Oct 20 15:52:57 cmn3 kernel: [<c0375480>] nanosleep_restart_mono
+0x0/0x30 (8)
Oct 20 15:52:57 cmn3 kernel: [<c0141e20>] ktimer_wake_up+0x0/0x10 (64)
Oct 20 15:52:57 cmn3 kernel: [<c014219c>] sys_nanosleep+0x4c/0x50 (32)
Oct 20 15:52:57 cmn3 kernel: [<c0103481>] syscall_call+0x7/0xb (16)
...left for a while and came back to find the machine catatonic. No hard
lock but not much I could do (would ping back but could not ssh, managed
to switch to a text console but login did not work). I found this in the
logs:
Oct 20 15:58:49 cmn3 kernel: BUG: swapper:0, possible softlockup
detected on CPU#1!
Oct 20 15:58:49 cmn3 kernel: [<c01532c6>] softlockup_detected+0x36/0x50
(8)
Oct 20 15:58:49 cmn3 kernel: [<c011913f>] smp_apic_timer_interrupt
+0x3f/0x50 (20)
Oct 20 15:58:49 cmn3 kernel: [<c0103f54>] apic_timer_interrupt
+0x1c/0x24 (8)
Oct 20 15:58:49 cmn3 kernel: [<c023c70d>] acpi_processor_idle+0x0/0x2a7
(8)
Oct 20 15:58:49 cmn3 kernel: [<c023c801>] acpi_processor_idle
+0xf4/0x2a7 (36)
Oct 20 15:58:49 cmn3 kernel: [<c0101134>] cpu_idle+0x84/0xf0 (48)
Oct 20 15:58:49 cmn3 kernel: [<c0376582>] _raw_spin_unlock_irq
+0x12/0x20 (4)
-- Fernando
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