Date: Thu, 25 Jul 2013 03:48:37 +0000 (UTC) From: Tim Kientzle <kientzle@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r253636 - head/sys/vm Message-ID: <201307250348.r6P3mbsG049595@svn.freebsd.org>
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Author: kientzle Date: Thu Jul 25 03:48:37 2013 New Revision: 253636 URL: http://svnweb.freebsd.org/changeset/base/253636 Log: Clear entire map structure including locks so that the locks don't accidentally appear to have been already initialized. In particular, this fixes a consistent kernel crash on armv6 with: panic: lock "vm map (user)" 0xc09cc050 already initialized that appeared with r251709. PR: arm/180820 Modified: head/sys/vm/vm_map.c Modified: head/sys/vm/vm_map.c ============================================================================== --- head/sys/vm/vm_map.c Thu Jul 25 03:44:12 2013 (r253635) +++ head/sys/vm/vm_map.c Thu Jul 25 03:48:37 2013 (r253636) @@ -239,8 +239,7 @@ vm_map_zinit(void *mem, int size, int fl vm_map_t map; map = (vm_map_t)mem; - map->nentries = 0; - map->size = 0; + memset(map, 0, sizeof(*map)); mtx_init(&map->system_mtx, "vm map (system)", NULL, MTX_DEF | MTX_DUPOK); sx_init(&map->lock, "vm map (user)"); return (0);
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