From: Herbert Xu <herb...@gondor.apana.org.au>
Date: Wed, 16 Dec 2015 16:45:54 +0800
> The commit ba7c95ea3870fe7b847466d39a049ab6f156aa2c ("rhashtable:
> Fix sleeping inside RCU critical section in walk_stop") introduced
> a new spinlock for the walker list. However, it did not convert
> all existing users of the list over to the new spin lock. Some
> continued to use the old mutext for this purpose. This obviously
> led to corruption of the list.
>
> The fix is to use the spin lock everywhere where we touch the list.
>
> This also allows us to do rcu_rad_lock before we take the lock in
> rhashtable_walk_start. With the old mutex this would've deadlocked
> but it's safe with the new spin lock.
>
> Fixes: ba7c95ea3870 ("rhashtable: Fix sleeping inside RCU...")
> Reported-by: Colin Ian King <colin.k...@canonical.com>
> Signed-off-by: Herbert Xu <herb...@gondor.apana.org.au>
Applied and queued up for -stable, thanks Herbert.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
