Date: Mon, 23 Mar 2009 00:15:38 +0000 (UTC) From: Nathan Whitehorn <nwhitehorn@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r190302 - in stable/7/sys: . contrib/pf dev/ath/ath_hal dev/cxgb powerpc/powerpc Message-ID: <200903230015.n2N0Fcd6088568@svn.freebsd.org>
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Author: nwhitehorn Date: Mon Mar 23 00:15:38 2009 New Revision: 190302 URL: http://svn.freebsd.org/changeset/base/190302 Log: MFC r189675: 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 Modified: stable/7/sys/ (props changed) stable/7/sys/contrib/pf/ (props changed) stable/7/sys/dev/ath/ath_hal/ (props changed) stable/7/sys/dev/cxgb/ (props changed) stable/7/sys/powerpc/powerpc/mmu_oea.c Modified: stable/7/sys/powerpc/powerpc/mmu_oea.c ============================================================================== --- stable/7/sys/powerpc/powerpc/mmu_oea.c Mon Mar 23 00:00:50 2009 (r190301) +++ stable/7/sys/powerpc/powerpc/mmu_oea.c Mon Mar 23 00:15:38 2009 (r190302) @@ -1102,8 +1102,11 @@ 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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