Messages in this thread |  | | From | "Sam Varshavchik" <> | Subject | Re: Deadlock with linux kernel | Date | Mon, 29 Oct 2001 02:08:55 GMT |
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Mika Liljeberg writes:
> Hi Jeff, > > I have the exact same symptoms on my PII SMP, 440BX chipset machine, and > I believe it started around version 2.4.6 as you say. Prior to that, my > machine would reboot randomly without warning. The latest kernel that > neither reboots nor locks up is 2.4.0-test9. Sometimes it takes two > hours, sometimes it takes two days, sometimes it takes longer.
A small SMP bug did indeed slip through in 2.4.6 that nails some SMP hardware dead cold. It should be fixed in the -ac tree know. Have no idea about the spontaneous reboots you were seeing with the earlier kernels.
> The machine just freezes solid, nothing appears on the console, sysrq > won't work, leds won't blink, and I suspect the CPUs are spinning (I can > hear the CPU fans pick up speed, when it happens).
Yup. If you have the right combination of hardware, in 2.4.6+ you could sometimes end up in an infinite loop while holding a spinlock. I was able to hit the jackpot with dual P-IIIs on a 440GX with two aic7xxx HBAs.
This wouldn't explain your spontaneous reboots, but try booting with "noapic".
-- Sam
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