On Thu, May 07, 2009 at 09:06:44PM +0000, James Bottomley wrote: > On Thu, 2009-05-07 at 14:41 -0400, John David Anglin wrote: > > > On Thu, May 07, 2009 at 01:41:03PM -0400, John David Anglin wrote: > > > > > On Wed, May 06, 2009 at 01:39:49PM -0400, John David Anglin wrote: > > > > > > > The tombstone is: > > > > > > > > > > > > > > do_page_fault() pid=10205 command='strace' type=15 address=0x407d2f18 > > > > > > > vm_start = 0x4068d000, vm_end = 0x4068f000 > > > > > > > > > > > > So, the pointer passed to __canonicalize_funcptr_for_compare is outside > > > > > > the vm range. > > > > > > > > > > > > Maybe "info sharedlib" will show something. Need to find out why the > > > > > > address of the function descriptor is outside the vm range. > > > > > > > > > > > > > > > > 405c0000-405c2000 rwxp 405c0000 00:00 0 > > > > > > > > The function pointer address is also outside this range. > > > > > > > > > > Sorry, this was with a rebuilt binary, and it lies within this range. > > > > It's marked rwxp, so why the fault? > > That's a bit fascinating ... it means we got into the bad_area: goto of > do_page_fault() somehow even though the vma apparently allowed the fault > and we should have been able to page it in. Something like this might > explain a lot of our stability problems. > Sadly, I can't seem to reproduce this right now, because strace is dying with the ptrace issue JDA brought up earlier. I'll poke at it more tonight, but I want to get caught up on the merging first. cheers, Kyle -- To unsubscribe from this list: send the line "unsubscribe linux-parisc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
