Messages in this thread | | | Date | Tue, 4 Apr 2006 15:24:54 -0700 | From | Andrew Morton <> | Subject | Re: 2.6.17-rc1-mm1: mlockall() regression on x86_64 |
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"Rafael J. Wysocki" <rjw@sisk.pl> wrote: > > On Tuesday 04 April 2006 10:45, Andrew Morton wrote: > > > > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.17-rc1/2.6.17-rc1-mm1/ > > With this kernel mlockall(MCL_CURRENT | MCL_FUTURE) returns -EFAULT if called > by root (unconditionally, it seems) on x86_64. > > On my box the output of: > > #include <sys/mman.h> > #include <stdio.h> > #include <string.h> > #include <errno.h> > > int main() > { > int ret; > > ret = mlockall(MCL_CURRENT | MCL_FUTURE); > if (ret < 0) > printf("%s\n", strerror(errno)); > > return 0; > } > > is "Bad address", if run by root. >
Yes, me too. It works OK on x86_32.
It's due to mm-posix-memory-lock.patch. I'd guess that make_pages_present() is returning -EFAULT for some reason.
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