Date: Tue, 27 Mar 2018 13:09:35 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r331614 - stable/11/sys/vm Message-ID: <201803271309.w2RD9ZGC022908@repo.freebsd.org>
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Author: kib Date: Tue Mar 27 13:09:35 2018 New Revision: 331614 URL: https://svnweb.freebsd.org/changeset/base/331614 Log: MFC r331247: Check for wrap-around in vm_phys_alloc_seg_contig(). Modified: stable/11/sys/vm/vm_phys.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/vm/vm_phys.c ============================================================================== --- stable/11/sys/vm/vm_phys.c Tue Mar 27 11:49:15 2018 (r331613) +++ stable/11/sys/vm/vm_phys.c Tue Mar 27 13:09:35 2018 (r331614) @@ -1396,6 +1396,8 @@ vm_phys_alloc_seg_contig(struct vm_phys_seg *seg, u_lo */ pa = VM_PAGE_TO_PHYS(m_ret); pa_end = pa + size; + if (pa_end < pa) + continue; for (;;) { pa += 1 << (PAGE_SHIFT + VM_NFREEORDER - 1);
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