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    SubjectRe: [PATCH] module,bug: Add TAINT_OOT_MODULE flag for modules not built in-tree
    On Mon, Dec 12, 2011 at 01:40:44PM -0800, Luis R. Rodriguez wrote:
    > On Mon, Oct 24, 2011 at 6:12 AM, Ben Hutchings <> wrote:
    > > Use of the GPL or a compatible licence doesn't necessarily make the code
    > > any good.  We already consider staging modules to be suspect, and this
    > > should also be true for out-of-tree modules which may receive very
    > > little review.
    > >
    > > Signed-off-by: Ben Hutchings <>
    > > ---
    > > Debian has been carrying this for the last few kernel versions.  The
    > > recent thread '[RFC] virtualbox tainting.' and discussions at KS suggest
    > > that this might be more generally useful.
    > This indeed seems like a good idea to advocate getting things upstream
    > (not just staging) but what about the case where we have upstream
    > drivers from future kernels backported to older kernels and the newer
    > driver is simply provided as a feature for users who may need new
    > features / chipset support on their old distribution kernel?

    They continue to work without any loss of functionality. (After the
    follow-up patches to keep dynamic debugging and lock debugging

    > It seems this taint flag will be used for driers backported through
    > compat-wireless, the compat kernel module or any other backported
    > driver, even if it is indeed upstream and whereby kernel developer
    > *do* commit to actually fixing issues. In our experience
    > compat-wireless bugs *are real bugs*, not backport bugs so we do look
    > into them. In our latest linux-next.git based release for example
    > backport code consists only of 1.3804% of the code.

    Now you can look for (O) after the module name in a BUG/Oops message
    and you can tell whether the user really had the original or
    compat-wireless version of the driver.

    It is really up to each distributor or developer how they treat
    bug reports with the O taint. When handling Debian bug reports I
    won't automatically reject such a tainted kernel but I will look
    carefully at the module list.


    Ben Hutchings
    We get into the habit of living before acquiring the habit of thinking.
    - Albert Camus
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