linux-kernel - Re: list corruption on ib

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Date:	Thu, 27 Dec 2007 11:58:17 +0900
From:	FUJITA Tomonori <fujita.tomonori@....ntt.co.jp>
To:	dillowda@...l.gov
Cc:	tomof@....org, linux-kernel@...r.kernel.org,
	general@...ts.openfabrics.org, pw@....edu,
	fujita.tomonori@....ntt.co.jp
Subject: Re: list corruption on ib_srp load in v2.6.24-rc5

On Wed, 26 Dec 2007 12:14:11 -0500
David Dillow <dillowda@...l.gov> wrote:

> 
> On Sun, 2007-12-23 at 01:41 +0900, FUJITA Tomonori wrote:
> > transport_container_unregister(&i->rport_attr_cont) should not fail here.
> > 
> > It fails because there is still a srp rport.
> > 
> > I think that as Pete pointed out, srp_remove_one needs to call
> > srp_remove_host.
> > 
> > Can you try this?
> 
> That patched oopsed in scsi_remove_host(), but reversing the order has
> survived over 500 insert/probe/remove cycles.

Thanks,

Can you post the oops message? The srp class might have bugs related
to it.


> Tested-by: David Dillow <dillowda@...l.gov>
> ---
> diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c
> index 950228f..77e8b90 100644
> --- a/drivers/infiniband/ulp/srp/ib_srp.c
> +++ b/drivers/infiniband/ulp/srp/ib_srp.c
> @@ -2054,6 +2054,7 @@ static void srp_remove_one(struct ib_device *device)
>  		list_for_each_entry_safe(target, tmp_target,
>  					 &host->target_list, list) {
>  			scsi_remove_host(target->scsi_host);
> +			srp_remove_host(target->scsi_host);
>  			srp_disconnect_target(target);
>  			ib_destroy_cm_id(target->cm_id);
>  			srp_free_target_ib(target);
> 
> 
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