linux-kernel - Re: BUG: corrupted list in _cma_attach_to

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Message-ID: <20200309172430.GV31668@ziepe.ca>
Date:   Mon, 9 Mar 2020 14:24:30 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     syzbot <syzbot+06b50ee4a9bd73e8b89f@...kaller.appspotmail.com>
Cc:     chuck.lever@...cle.com, dledford@...hat.com, leon@...nel.org,
        linux-kernel@...r.kernel.org, linux-rdma@...r.kernel.org,
        parav@...lanox.com, syzkaller-bugs@...glegroups.com,
        willy@...radead.org
Subject: Re: BUG: corrupted list in _cma_attach_to_dev

On Sun, Mar 01, 2020 at 11:13:15AM -0800, syzbot wrote:
> Hello,
> 
> syzbot found the following crash on:
> 
> HEAD commit:    63623fd4 Merge tag 'for-linus' of git://git.kernel.org/pub..
> git tree:       upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=16a8fa81e00000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=9833e26bab355358
> dashboard link: https://syzkaller.appspot.com/bug?extid=06b50ee4a9bd73e8b89f
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14e804f9e00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=15d6fd29e00000

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git for-next