netdev - Re: aquantia - BUG: unable to handle kernel NULL pointer dereference at 0000000000000058 on reboot

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Message-ID: <6df8b628-cec5-9ce5-8430-e9a2cd27346d@aquantia.com>
Date:   Tue, 10 Apr 2018 15:53:39 +0300
From:   Igor Russkikh <igor.russkikh@...antia.com>
To:     Yanko Kaneti <yaneti@...lera.com>
Cc:     netdev <netdev@...r.kernel.org>
Subject: Re: aquantia - BUG: unable to handle kernel NULL pointer dereference
 at 0000000000000058 on reboot


On 10.04.2018 15:42, Yanko Kaneti wrote:
> Hello, 
> 
> Since 90869ddfefeb net: aquantia: Implement pci shutdown callback
> I get the below oops on reboot.  Without the callback everything works
> as expected.
> 

Thanks, we also recently found out that.

Could you please try the below patch?


diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
index c96a921..32f6d2e 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_nic.c
@@ -951,9 +951,11 @@ void aq_nic_shutdown(struct aq_nic_s *self)
 
 	netif_device_detach(self->ndev);
 
-	err = aq_nic_stop(self);
-	if (err < 0)
-		goto err_exit;
+	if (netif_running(self->ndev)) {
+		err = aq_nic_stop(self);
+		if (err < 0)
+			goto err_exit;
+	}
 	aq_nic_deinit(self);
 
 err_exit:
-- 
2.7.4