Re: [syzbot] [fat?] possible deadlock in do_user_addr_fault

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On Tue, Aug 8, 2023 at 12:42 PM syzbot
<syzbot+278098b0faaf0595072b@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> syzbot suspects this issue was fixed by commit:
>
> commit ff84772fd45d486e4fc78c82e2f70ce5333543e6
> Author: Sungjong Seo <sj1557.seo@xxxxxxxxxxx>
> Date:   Fri Jul 14 08:43:54 2023 +0000
>
>     exfat: release s_lock before calling dir_emit()
>
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16623aa9a80000
> start commit:   f8dba31b0a82 Merge tag 'asym-keys-fix-for-linus-v6.4-rc5' ..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=3c980bfe8b399968
> dashboard link: https://syzkaller.appspot.com/bug?extid=278098b0faaf0595072b
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=144ccf79280000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=135fab79280000
>
> If the result looks correct, please mark the issue as fixed by replying with:
>
> #syz fix: exfat: release s_lock before calling dir_emit()

Seems reasonable.
#syz fix: exfat: release s_lock before calling dir_emit()

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