linux-kernel - Re: [patch] revert: [NET]: Fix races in net_rx

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Message-Id: <200707192135.43652.olaf.kirch@oracle.com>
Date:	Thu, 19 Jul 2007 21:35:41 +0200
From:	Olaf Kirch <olaf.kirch@...cle.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	"Kok, Auke" <auke-jan.h.kok@...el.com>,
	Jarek Poplawski <jarkao2@...pl>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, davem@...emloft.net
Subject: Re: [patch] revert: [NET]: Fix races in net_rx_action vs netpoll


Does the following help?

Olaf
-- 
Olaf Kirch  |  --- o --- Nous sommes du soleil we love when we play
okir@....de |    / | \   sol.dhoop.naytheet.ah kin.ir.samse.qurax
Test patch
---
Index: build-2.6/drivers/net/netconsole.c
===================================================================
--- build-2.6.orig/drivers/net/netconsole.c
+++ build-2.6/drivers/net/netconsole.c
@@ -70,7 +70,7 @@ static void write_msg(struct console *co
 	int frag, left;
 	unsigned long flags;
 
-	if (!np.dev)
+	if (!np.dev || !netif_running(np.dev))
 		return;
 
 	local_irq_save(flags);

-
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