Messages in this thread | | | Date | Sun, 4 Oct 2009 16:43:20 +0400 | From | Cyrill Gorcunov <> | Subject | Re: [Bug #14270] Cannot boot on a PIII Celeron |
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[Michael Tokarev - Sun, Oct 04, 2009 at 04:14:44PM +0400] ... >> >> I switched to BZIP2, it booted fine. I switched back to LZMA - >> and that one now boots too. Original bzImage, which were built >> by the same compiler from the same source using the same >> options reboots. >> >> So um... I'm now trying to reproduce it ;) > > I performed about 20 kernel recompiles, and finally have some "statistics". > The problem is almost reproduceable, in a sense that I was able to get 6 > more cases behaving the same way (rebooting right at early boot on a cel). > And all 3 "non-working" cases were with ccache. Ie, about half out of ~25 > compiles done with ccache, and 7 of the resulting kernels are buggy. No > single failure without ccache so far. > > Maybe it's some stale .o file cached by ccache (and it indeed looks like > that) -- I didn't try to remove the cache yet (but my guess is that I > wont be able to reproduce the issue with clean cache anymore). > > What puzzles me most is the "failure mode". The difference between the > two processors is minimal. Having a corrupt .o file and almost-working > kernel is almost impossible by its own. And hitting this difference with > a corrupt .o file is.. unbelievable. > > So I'm declaring it's a false alarm for now, and closing the bug.
ok, thanks for hard work on this Michael!
> > /mjt > -- Cyrill
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