netdev - Re: [syzbot] KASAN: use-after-free Read in nfc_llcp_put

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Date:   Sun, 09 May 2021 12:52:07 -0700
From:   syzbot <syzbot+e4689b43d2ed2ed63611@...kaller.appspotmail.com>
To:     akpm@...ux-foundation.org, bp@...en8.de, davem@...emloft.net,
        hpa@...or.com, jmattson@...gle.com, joro@...tes.org,
        kuba@...nel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        mark.rutland@....com, masahiroy@...nel.org, mingo@...hat.com,
        netdev@...r.kernel.org, pbonzini@...hat.com, peterz@...radead.org,
        rafael.j.wysocki@...el.com, rostedt@...dmis.org, seanjc@...gle.com,
        syzkaller-bugs@...glegroups.com, tglx@...utronix.de,
        vkuznets@...hat.com, wanpengli@...cent.com, will@...nel.org,
        x86@...nel.org
Subject: Re: [syzbot] KASAN: use-after-free Read in nfc_llcp_put_ssap

syzbot has bisected this issue to:

commit 997acaf6b4b59c6a9c259740312a69ea549cc684
Author: Mark Rutland <mark.rutland@....com>
Date:   Mon Jan 11 15:37:07 2021 +0000

    lockdep: report broken irq restoration

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=14af741dd00000
start commit:   95aafe91 net: ethernet: ixp4xx: Support device tree probing
git tree:       net-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=16af741dd00000
console output: https://syzkaller.appspot.com/x/log.txt?x=12af741dd00000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7668018815a66138
dashboard link: https://syzkaller.appspot.com/bug?extid=e4689b43d2ed2ed63611
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15ed2663d00000

Reported-by: syzbot+e4689b43d2ed2ed63611@...kaller.appspotmail.com
Fixes: 997acaf6b4b5 ("lockdep: report broken irq restoration")

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