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Open Source and information security mailing list archives
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Date: Fri, 16 Dec 2011 07:53:37 -0600 From: Larry Finger <Larry.Finger@...inger.net> To: Johannes Berg <johannes@...solutions.net> CC: Arend van Spriel <arend@...adcom.com>, "linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> Subject: Re: unexpected taint message On 12/16/2011 06:30 AM, Johannes Berg wrote: > On Fri, 2011-12-16 at 10:27 +0100, Arend van Spriel wrote: >> To whoever may know, >> >> Upon loading our driver module I get the following message: >> >> kernel: [ 344.805106] Disabling lock debugging due to kernel taint >> >> What exactly are the criteria for tainting? Our driver locking strategy >> is something we want to refactor and having lock debugging during that >> transition may be a life safer. > > cat /proc/sys/kernel/tainted Please note that Documentation/sysctl/kernel.txt is missing the explanation for two bits in the value printed: 2048 - The system is working around a severe firmware bug. 4096 - An out-of-tree module has been loaded. On my system, bit 4096 is set due to loading the VirtualBox module, which disables lock debugging lock debugging. I suspect that loading VMware would cause the same condition. I also found that loading brcmsmac did not trigger the license taint. I think you are OK with the dual license. Larry -- 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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