linux-kernel - Re: [EXT] Re: RIP: 0010:qede_load+0x128d/0x13b0 [qede]

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Message-ID: <20220818112637.58101fe6@kernel.org>
Date:   Thu, 18 Aug 2022 11:26:37 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Manish Chopra <manishc@...vell.com>
Cc:     Bruno Goncalves <bgoncalv@...hat.com>,
        Ariel Elior <aelior@...vell.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        CKI Project <cki-project@...hat.com>,
        Saurav Kashyap <skashyap@...vell.com>,
        Javed Hasan <jhasan@...vell.com>,
        Alok Prasad <palok@...vell.com>
Subject: Re: [EXT] Re: RIP: 0010:qede_load+0x128d/0x13b0 [qede] - 5.19.0

On Thu, 18 Aug 2022 17:55:28 +0000 Manish Chopra wrote:
> 3. You mentioned about commit 3aa6bce9af0e ("net: watchdog: hold device global xmit lock during tx disable")

FWIW that was just my guess based on the stack trace, Bruno posted the
stacktraces with line numbers decoded here:

https://lore.kernel.org/all/CA+QYu4ob4cbh3Vnh9DWgaPpyw8nTLFG__TbBpBsYg1tWJPxygg@mail.gmail.com/

>     Do you mean issue started surfacing only after this commit ? Driver calls netif_tx_disable() from these two relevant contexts -
> 
>     a. One in ndo_stop() flow 
> 
>       	        /* Close OS Tx */
>         netif_tx_disable(edev->ndev);
>         netif_carrier_off(edev->ndev);
>    
>    b. Other in LINK events handling from the hard IRQ context
> 
>         DP_NOTICE(edev, "Link is down\n");
>         netif_tx_disable(edev->ndev);
>         netif_carrier_off(edev->ndev);