linux-kernel - Re: [syzbot] [nfc?] possible deadlock in nci_start

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Date:   Sat, 25 Mar 2023 17:46:23 -0700
From:   syzbot <syzbot+f1f36887d202cea1446d@...kaller.appspotmail.com>
To:     bongsu.jeon@...sung.com, davem@...emloft.net, dvyukov@...gle.com,
        edumazet@...gle.com, hdanton@...a.com,
        krzysztof.kozlowski@...aro.org, kuba@...nel.org, linma@....edu.cn,
        linux-kernel@...r.kernel.org, linux-nfc@...ts.01.org,
        netdev@...r.kernel.org, pabeni@...hat.com,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [nfc?] possible deadlock in nci_start_poll

syzbot suspects this issue was fixed by commit:

commit b2e44aac91b25abbed57d785089c4b7af926a7bd
Author: Dmitry Vyukov <dvyukov@...gle.com>
Date:   Tue Nov 15 10:00:17 2022 +0000

    NFC: nci: Allow to create multiple virtual nci devices

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=117e50c1c80000
start commit:   0b1dcc2cf55a Merge tag 'mm-hotfixes-stable-2022-11-24' of ..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=436ee340148d5197
dashboard link: https://syzkaller.appspot.com/bug?extid=f1f36887d202cea1446d
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=125fa5c5880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12508d3d880000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: NFC: nci: Allow to create multiple virtual nci devices

For information about bisection process see: https://goo.gl/tpsmEJ#bisection