Messages in this thread | | | Subject | Re: nfsd, v4: oops in find_acceptable_alias, ppc32 Linux, post-2.6.27-rc1 | From | Michael Ellerman <> | Date | Tue, 05 Aug 2008 21:53:39 +1000 |
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On Tue, 2008-08-05 at 21:43 +1200, Paul Collins wrote: > Michael Ellerman <michael@ellerman.id.au> writes: > > > I see you have FTRACE enabled. That's new and could potentially bugger > > things up without the compiler knowing, so can you turn that off. > > With FTRACE disabled, doing cross-builds from the 2.6.26 amd64 client, a > setup that normally triggers the problem on the 2nd or 3rd build, I was > able to do 10 complete builds. ("make clean oldconfig vmlinux modules") > > So it looks like ftrace is the cause, or at least provokes some other > usually-latent problem. I wasn't using it, so I'll just leave it off.
OK, that's sort of good, but also not. I can't see anything in the ftrace code that explains it, but I guess it's lurking. We'll try and reproduce locally and bang on it.
Thanks for chasing it, and let us know if you get an oops with CONFIG_FTRACE=n.
> > And can you enable CONFIG_CODE_PATCHING_SELFTEST and > > CONFIG_FTR_FIXUP_SELFTEST, that will enable tests of some code I changed > > that /could/ (maybe) cause random blow ups. > > With those options enabled, I get this: > > Running code patching self-tests ... > Running feature fixup self-tests ...
That's good, they only print if they fail.
cheers
-- Michael Ellerman OzLabs, IBM Australia Development Lab
wwweb: http://michael.ellerman.id.au phone: +61 2 6212 1183 (tie line 70 21183)
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