linux-kernel - Re: [syzbot] [exfat?] possible deadlock in exfat_get

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Message-ID: <000000000000ff17f2060724c971@google.com>
Date:   Sat, 07 Oct 2023 11:47:29 -0700
From:   syzbot <syzbot+247e66a2c3ea756332c7@...kaller.appspotmail.com>
To:     hdanton@...a.com, linkinjeon@...nel.org,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        sj1557.seo@...sung.com, syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [exfat?] possible deadlock in exfat_get_block

syzbot suspects this issue was fixed by commit:

commit ff84772fd45d486e4fc78c82e2f70ce5333543e6
Author: Sungjong Seo <sj1557.seo@...sung.com>
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=12f6bef1680000
start commit:   5d0c230f1de8 Linux 6.5-rc4
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=27a4e50cc5856a15
dashboard link: https://syzkaller.appspot.com/bug?extid=247e66a2c3ea756332c7
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12532d91a80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=105aae2ea80000

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

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

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