Date: Mon, 25 Nov 2013 16:06:07 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r258560 - stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <201311251606.rAPG67Eu007286@svn.freebsd.org>
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Author: avg Date: Mon Nov 25 16:06:07 2013 New Revision: 258560 URL: http://svnweb.freebsd.org/changeset/base/258560 Log: MFV r258377: 4088 use after free in arc_release() illumos/illumos-gate@ccc22e130479b5bd7c0002267fee1e0602d3f772 Modified: stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Directory Properties: stable/9/sys/ (props changed) stable/9/sys/cddl/contrib/opensolaris/ (props changed) Modified: stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c ============================================================================== --- stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Mon Nov 25 15:58:48 2013 (r258559) +++ stable/9/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c Mon Nov 25 16:06:07 2013 (r258560) @@ -3542,6 +3542,7 @@ arc_release(arc_buf_t *buf, void *tag) if (l2hdr) { mutex_enter(&l2arc_buflist_mtx); hdr->b_l2hdr = NULL; + list_remove(l2hdr->b_dev->l2ad_buflist, hdr); } buf_size = hdr->b_size; @@ -3629,7 +3630,6 @@ arc_release(arc_buf_t *buf, void *tag) ARCSTAT_INCR(arcstat_l2_asize, -l2hdr->b_asize); trim_map_free(l2hdr->b_dev->l2ad_vdev, l2hdr->b_daddr, hdr->b_size, 0); - list_remove(l2hdr->b_dev->l2ad_buflist, hdr); kmem_free(l2hdr, sizeof (l2arc_buf_hdr_t)); ARCSTAT_INCR(arcstat_l2_size, -buf_size); mutex_exit(&l2arc_buflist_mtx);
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