Messages in this thread | | | From | "Alexander Y. Fomichev" <> | Subject | Re: kernel BUG at arch/x86_64/mm/../../i386/mm/hugetlbpage.c:140! | Date | Tue, 6 Mar 2007 15:45:23 +0300 |
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On Saturday 03 March 2007, Bill Irwin wrote: > On Fri, Mar 02, 2007 at 04:51:15PM +0300, Alexander Y. Fomichev wrote: > > I'm hit a bug on 2.6.21-rc1 at startup of mysql with 'large-pages' flag > > set. (at this point mysql trying to allocate pages from hugetlb pool by > > sysv shm syscalls). Seems like it could be triggered by previous badness > > and probably hugetlb itself is not related. Anyway i couldn't reproduce > > it by now with 2.6.21-rc2 git commit > > 562aa1d4c6a874373f9a48ac184f662fbbb06a04. Very likely it has been fixed > > somwhere between 2.6.21-rc1 and -rc2, but i couldn't find something > > related by git log so any comments are welcome. > > If you have a known-working kernel version, git-bisect might help you > track down where it was introduced. Given the messages prior to the > hugetlbpage.c BUG_ON I'd say that this is something else besides the > specific code listed by line number,
Nop, seems like it is hugetlb bug fixed by Adam commit 516dffdcd8827a40532798602830dfcfc672294c [PATCH] Fix get_unmapped_area and fsync for hugetlb shm segments I've disregard it thoughtlessly so Adam marks it specific for powerpc/ia64. (hmm.. i donno realy why, huge pages should be alined anyway and if i understend it correctly it may not be if is_file_hugepages() fails)
As of "junk" just before the BUG this again IIUC because o-direct staff catches this issue before hugetlb.
> though I wouldn't rule out hugetlb > having tripped over itself before the actual BUG. >
Yep, it is.
> -- wli
-- Best regards. Alexander Y. Fomichev <gluk@php4.ru> Public PGP key: http://sysadminday.org.ru/gluk.asc - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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