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SubjectRe: [syzbot] INFO: trying to register non-static key in l2cap_sock_teardown_cb
On Tue, 30 Nov 2021 at 17:19, syzbot
<syzbot+a41dfef1d2e04910eb2e@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit 1bff51ea59a9afb67d2dd78518ab0582a54a472c
> Author: Wang ShaoBo <bobo.shaobowang@huawei.com>
> Date: Wed Sep 1 00:35:37 2021 +0000
>
> Bluetooth: fix use-after-free error in lock_sock_nested()
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=134c881eb00000
> start commit: 73b7a6047971 net: dsa: bcm_sf2: support BCM4908's integrat..
> git tree: net-next
> kernel config: https://syzkaller.appspot.com/x/.config?x=9ce34124da4c882b
> dashboard link: https://syzkaller.appspot.com/bug?extid=a41dfef1d2e04910eb2e
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=166ee4cf500000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1337172f500000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: Bluetooth: fix use-after-free error in lock_sock_nested()
>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

A use-after-free can lead to other random consequences, and there
actually was a KASAN report after the lockdep report in the original
report. So w/o a better candidate let's do:

#syz fix: Bluetooth: fix use-after-free error in lock_sock_nested()

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