Date: Tue, 18 Apr 2000 17:52:03 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Alan Cox <alc@cs.rice.edu> Cc: Brian Fundakowski Feldman <green@FreeBSD.ORG>, Alfred Perlstein <bright@wintelcom.net>, Michael Reifenberger <root@nihil.plaut.de>, current@FreeBSD.ORG, alc@FreeBSD.ORG Subject: Re: Anyone able to verify the fix for (was Re: panic: vm_object_shadow: source object has OBJ_ONEMAPPING set.) Message-ID: <200004190052.RAA17353@apollo.backplane.com> References: <Pine.BSF.4.21.0004151755001.17351-100000@green.dyndns.org> <200004181736.KAA14683@apollo.backplane.com> <20000418194126.C2616@cs.rice.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
:
:This patch introduces a new bug. While it does guarantee that
:the assertion in vm_object_shadow isn't tripped over, it doesn't
:clear the OBJ_ONEMAPPING flag on the newly created shadow object.
:(New objects are created with OBJ_ONEMAPPING set.) Consequently,
:we'll have two overlapping mappings to the same shadow object
:that has OBJ_ONEMAPPING set. That's bad.
:
:Alan
Ach. I'll just clear in both places. I really don't have
time to go through the code and 'do it right', but if
someone else wants to I'll be happy to review their code.
-Matt
To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200004190052.RAA17353>