linux-kernel - Re: possible deadlock in siw_create

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Date:   Mon, 9 Mar 2020 14:20:23 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     syzbot <syzbot+3fbea977bd382a4e6140@...kaller.appspotmail.com>
Cc:     bmt@...ich.ibm.com, dledford@...hat.com,
        linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: Re: possible deadlock in siw_create_listen

On Fri, Mar 06, 2020 at 05:25:10PM -0800, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    68e2c376 Merge branch 'hsr-several-code-cleanup-for-hsr-mo..
> git tree:       net-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=10c92e91e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=7e519c35f474a428
> dashboard link: https://syzkaller.appspot.com/bug?extid=3fbea977bd382a4e6140
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> 
> Unfortunately, I don't have any reproducer for this crash yet.
> 
> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+3fbea977bd382a4e6140@...kaller.appspotmail.com

#syz dup: possible deadlock in cma_netdev_callback