Messages in this thread | | | Date | Fri, 20 Mar 2015 12:05:05 -0600 | From | David Ahern <> | Subject | Re: 4.0.0-rc4: panic in free_block |
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On 3/20/15 10:58 AM, Linus Torvalds wrote: > That said, SLAB is probably also almost unheard of in high-CPU > configurations, since slub has all the magical unlocked lists etc for > scalability. So maybe it's a generic SLAB bug, and nobody with lots of > CPU's is testing SLAB. >
Evidently, it is a well known problem internally that goes back to at least 2.6.39.
To this point I have not paid attention to the allocators. At what point is SLUB considered stable for large systems? Is 2.6.39 stable?
As for SLAB it is not clear if this is a sparc only problem. Perhaps the config should have a warning? It looks like SLAB is still the default for most arch.
DaveM: do you mind if I submit a patch to change the default for sparc to SLUB?
Now that the monster is unleashed, off to other problems...
Thanks, David
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