Date: Tue, 15 Aug 2006 14:07:21 GMT From: Roman Divacky <rdivacky@FreeBSD.org> To: Perforce Change Reviews <perforce@FreeBSD.org> Subject: PERFORCE change 104029 for review Message-ID: <200608151407.k7FE7Lj5095567@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=104029 Change 104029 by rdivacky@rdivacky_witten on 2006/08/15 14:06:41 Protect against racing concurent creation in futex_get() Pointed out by: jhb Affected files ... .. //depot/projects/soc2006/rdivacky_linuxolator/compat/linux/linux_futex.c#24 edit Differences ... ==== //depot/projects/soc2006/rdivacky_linuxolator/compat/linux/linux_futex.c#24 (text+ko) ==== @@ -342,13 +342,13 @@ if (locked == FUTEX_UNLOCKED) FUTEX_UNLOCK; + if (locked == FUTEX_UNLOCKED) + FUTEX_LOCK; /* Not found, create it */ f = malloc(sizeof(*f), M_LINUX, M_WAITOK); f->f_uaddr = uaddr; f->f_refcount = 1; TAILQ_INIT(&f->f_waiting_proc); - if (locked == FUTEX_UNLOCKED) - FUTEX_LOCK; LIST_INSERT_HEAD(&futex_list, f, f_list); if (locked == FUTEX_UNLOCKED) FUTEX_UNLOCK;
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