Author: kib Date: Thu Jul 2 15:22:13 2015 New Revision: 285046 URL: https://svnweb.freebsd.org/changeset/base/285046
Log: Account for the main process stack being one page below the highest user address when ABI uses shared page. Note that the change is no-op for correctness, since shared page does not fault. The mapping for the shared page is installed at the address space creation, the page is unmanaged and its pte/pv entry cannot be reclaimed. Submitted by: Oliver Pinter Review: https://reviews.freebsd.org/D2954 MFC after: 1 week Modified: head/sys/vm/vm_map.c Modified: head/sys/vm/vm_map.c ============================================================================== --- head/sys/vm/vm_map.c Thu Jul 2 15:17:30 2015 (r285045) +++ head/sys/vm/vm_map.c Thu Jul 2 15:22:13 2015 (r285046) @@ -3640,7 +3640,8 @@ Retry: return (KERN_NO_SPACE); } - is_procstack = (addr >= (vm_offset_t)vm->vm_maxsaddr) ? 1 : 0; + is_procstack = (addr >= (vm_offset_t)vm->vm_maxsaddr && + addr < (vm_offset_t)p->p_sysent->sv_usrstack) ? 1 : 0; /* * If this is the main process stack, see if we're over the stack _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
