Date: Wed, 11 Mar 2009 03:19:19 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r189675 - head/sys/powerpc/aim Message-ID: <200903110319.n2B3JJbO082647@svn.freebsd.org>
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Author: nwhitehorn Date: Wed Mar 11 03:19:19 2009 New Revision: 189675 URL: http://svn.freebsd.org/changeset/base/189675 Log: Change the PVO zone for fictitious pages to the unmanaged PVO zone, to match the unmanaged flag set in the PVO attributes. Without doing this, pmap_remove() could try to remove fictitious pages (like those created by mmap of physical memory) from the wrong UMA zone, causing a panic. Reported by: Justin Hibbits MFC after: 1 week Modified: head/sys/powerpc/aim/mmu_oea.c Modified: head/sys/powerpc/aim/mmu_oea.c ============================================================================== --- head/sys/powerpc/aim/mmu_oea.c Wed Mar 11 03:00:40 2009 (r189674) +++ head/sys/powerpc/aim/mmu_oea.c Wed Mar 11 03:19:19 2009 (r189675) @@ -1081,8 +1081,11 @@ moea_enter_locked(pmap_t pmap, vm_offset PMAP_LOCK_ASSERT(pmap, MA_OWNED); /* XXX change the pvo head for fake pages */ - if ((m->flags & PG_FICTITIOUS) == PG_FICTITIOUS) + if ((m->flags & PG_FICTITIOUS) == PG_FICTITIOUS) { + pvo_flags &= ~PVO_MANAGED; pvo_head = &moea_pvo_kunmanaged; + zone = moea_upvo_zone; + } /* * If this is a managed page, and it's the first reference to the page,
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