From: Shahaf Shuler <shahafs@mellanox.com>
To: Slava Ovsiienko <viacheslavo@mellanox.com>,
"dev@dpdk.org" <dev@dpdk.org>
Cc: Yongseok Koh <yskoh@mellanox.com>
Subject: Re: [dpdk-dev] [PATCH v2] net/mlx5: fix event handler uninstall
Date: Sun, 2 Jun 2019 07:53:51 +0000 [thread overview]
Message-ID: <AM0PR0502MB379532D992672CCA5DB44505C31B0@AM0PR0502MB3795.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <1558933112-16444-1-git-send-email-viacheslavo@mellanox.com>
Monday, May 27, 2019 7:59 AM, Viacheslav Ovsiienko:
> Subject: [dpdk-dev] [PATCH v2] net/mlx5: fix event handler uninstall
>
> When device is being closed and tries to unregister interrupt callback, there is
> a chance the handler is still active (called in context of eal_intr_thread_main
> thread). If so the rte_intr_callback_unregister returns -EAGAIN and keeps
> the handler registered, causing crash when underlaying resourse is gone
> away.
>
> This race condition may happen if event handling in application takes a long
> time. We should check the return code of unregistering routine and try again
> to unregister the handler. The diagnostic messages are shown once a
> second, while trying to unregister.
>
> Fixes: 028b2a28c3cb ("net/mlx5: update event handler for multiport IB
> devices")
>
> Signed-off-by: Viacheslav Ovsiienko <viacheslavo@mellanox.com>
> Acked-by: Yongseok Koh <yskoh@mellanox.com>
Applied to next-net-mlx, thanks.
prev parent reply other threads:[~2019-06-02 7:53 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-25 9:26 [dpdk-dev] [PATCH] " Viacheslav Ovsiienko
2019-05-26 19:16 ` Shahaf Shuler
2019-05-27 4:58 ` [dpdk-dev] [PATCH v2] " Viacheslav Ovsiienko
2019-06-02 7:53 ` Shahaf Shuler [this message]
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