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Date: Sun, 19 Jul 2009 16:04:48 +0300 (EAT) From: Dan Carpenter <error27@...il.com> To: linux-kernel@...r.kernel.org Subject: potential null dereference in sysfs_override_clocksource() Hello, I am testing a source checker (http://repo.or.cz/w/smatch.git). It found an issue in sysfs_override_clocksource() from kernel/time/clocksource.c. If "len" is zero then "ovr" is null and checking ovr->flags will oops on line 517. kernel/time/clocksource.c 516 if (tick_oneshot_mode_active() && 517 !(ovr->flags & CLOCK_SOURCE_VALID_FOR_HRES)) { 518 printk(KERN_WARNING "%s clocksource is not HRT compatible. " regards, dan carpenter -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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