Messages in this thread | | | Subject | Re: sctp: hang in sctp_remaddr_seq_show | From | Eric Dumazet <> | Date | Mon, 18 Mar 2013 08:25:40 -0700 |
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On Mon, 2013-03-18 at 07:04 -0400, Neil Horman wrote:
> I'm not sure why the process would never get back to the schedule, but looking > at the sctp_remaddr_seq_show function, I think that we should convert this > sequence: > sctp_local_bh_disable(); > read_lock(&head->lock); > rcu_read_lock(); > > to this: > read_lock(&head->lock); > rcu_read_lock_bh(); > > Neil
I dont think so.
BH needs to be disabled before read_lock(&head->lock);
or else, write_lock() could deadlock (assuming it can be called from BH)
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