linux-kernel - Re: list corruption on ib

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Date:	Wed, 26 Dec 2007 12:14:11 -0500
From:	David Dillow <dillowda@...l.gov>
To:	FUJITA Tomonori <tomof@....org>
Cc:	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 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.

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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