Date: Fri, 23 Jul 2010 06:30:01 +0000 (UTC) From: "Andrey V. Elsukov" <ae@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r210401 - head/sys/geom/part Message-ID: <201007230630.o6N6U1c5005299@svn.freebsd.org>
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Author: ae Date: Fri Jul 23 06:30:01 2010 New Revision: 210401 URL: http://svn.freebsd.org/changeset/base/210401 Log: Prevent access after free to table entry in case when user deletes partition that not yet created (changes doesn't committed to disk). PR: 148687 Approved by: mav (mentor) MFC after: 7 days Modified: head/sys/geom/part/g_part.c Modified: head/sys/geom/part/g_part.c ============================================================================== --- head/sys/geom/part/g_part.c Fri Jul 23 06:01:30 2010 (r210400) +++ head/sys/geom/part/g_part.c Fri Jul 23 06:30:01 2010 (r210401) @@ -830,14 +830,6 @@ g_part_ctl_delete(struct gctl_req *req, entry->gpe_pp = NULL; } - if (entry->gpe_created) { - LIST_REMOVE(entry, gpe_entry); - g_free(entry); - } else { - entry->gpe_modified = 0; - entry->gpe_deleted = 1; - } - if (pp != NULL) g_wither_provider(pp, ENXIO); @@ -850,6 +842,14 @@ g_part_ctl_delete(struct gctl_req *req, gctl_set_param(req, "output", sbuf_data(sb), sbuf_len(sb) + 1); sbuf_delete(sb); } + + if (entry->gpe_created) { + LIST_REMOVE(entry, gpe_entry); + g_free(entry); + } else { + entry->gpe_modified = 0; + entry->gpe_deleted = 1; + } return (0); }
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