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From:   Aleksandr Nogikh <nogikh@google.com>
Date:   Wed, 2 Aug 2023 16:17:22 +0200
Message-ID: <CANp29Y5DKbC0oCcxoX-fST0LQ8=0KZ-RK-GXL=2Vw=3y++wtOw@mail.gmail.com>
Subject: Re: [syzbot] [btrfs?] possible deadlock in btrfs_search_slot
To:     syzbot <syzbot+c06034aecf9f5eab1ac1@syzkaller.appspotmail.com>
Cc:     anand.jain@oracle.com, clm@fb.com, dsterba@suse.com,
        hdanton@sina.com, josef@toxicpanda.com,
        linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com
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On Tue, Aug 1, 2023 at 6:08=E2=80=AFPM syzbot
<syzbot+c06034aecf9f5eab1ac1@syzkaller.appspotmail.com> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit b740d806166979488e798e41743aaec051f2443f
> Author: Josef Bacik <josef@toxicpanda.com>
> Date:   Mon Nov 7 16:44:51 2022 +0000
>
>     btrfs: free btrfs_path before copying root refs to userspace
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=3D13015709a8=
0000
> start commit:   eb7081409f94 Linux 6.1-rc6
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=3D8d01b6e319797=
4dd
> dashboard link: https://syzkaller.appspot.com/bug?extid=3Dc06034aecf9f5ea=
b1ac1
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=3D124fc309880=
000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=3D126dfde588000=
0
>
> If the result looks correct, please mark the issue as fixed by replying w=
ith:
>
> #syz fix: btrfs: free btrfs_path before copying root refs to userspace

Looks reasonable.
#syz fix: btrfs: free btrfs_path before copying root refs to userspace

>
> For information about bisection process see: https://goo.gl/tpsmEJ#bisect=
ion
>