From: "Jason A. Donenfeld" <ja...@zx2c4.com>
Date: Wed, 21 Feb 2018 04:41:59 +0100
> Before, if cb->start() failed, the module reference would never be put,
> because cb->cb_running is intentionally false at this point. Users are
> generally annoyed by this because they can no longer unload modules that
> leak references. Also, it may be possible to tediously wrap a reference
> counter back to zero, especially since module.c still uses atomic_inc
> instead of refcount_inc.
> This patch expands the error path to simply call module_put if
> cb->start() fails.
> Signed-off-by: Jason A. Donenfeld <ja...@zx2c4.com>
> This probably should be queued up for stable.
Applied and queued up for -stable.