netdev - Re: [net-next v2] tipc: fix a deadlock when flushing scheduled work

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Message-ID: <20200907121014.033a183c@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
Date:   Mon, 7 Sep 2020 12:10:14 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Hoang Huu Le <hoang.h.le@...tech.com.au>
Cc:     ying.xue@...driver.com, netdev@...r.kernel.org, jmaloy@...hat.com,
        maloy@...jonn.com,
        syzbot+d5aa7e0385f6a5d0f4fd@...kaller.appspotmail.com
Subject: Re: [net-next v2] tipc: fix a deadlock when flushing scheduled work

On Mon,  7 Sep 2020 13:00:07 +0700 Hoang Huu Le wrote:
> In the commit fdeba99b1e58
> ("tipc: fix use-after-free in tipc_bcast_get_mode"), we're trying
> to make sure the tipc_net_finalize_work work item finished if it
> enqueued. But calling flush_scheduled_work() is not just affecting
> above work item but either any scheduled work. This has turned out
> to be overkill and caused to deadlock as syzbot reported:

Applied, thanks.