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SubjectRe: [syzbot] [reiserfs?] possible deadlock in open_xa_dir
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syzbot has bisected this issue to:

commit d82dcd9e21b77d338dc4875f3d4111f0db314a7c
Author: Roberto Sassu <roberto.sassu@huawei.com>
Date: Fri Mar 31 12:32:18 2023 +0000

reiserfs: Add security prefix to xattr name in reiserfs_security_write()

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14403182280000
start commit: 3c4aa4434377 Merge tag 'ceph-for-6.4-rc1' of https://githu..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=16403182280000
console output: https://syzkaller.appspot.com/x/log.txt?x=12403182280000
kernel config: https://syzkaller.appspot.com/x/.config?x=73a06f6ef2d5b492
dashboard link: https://syzkaller.appspot.com/bug?extid=8fb64a61fdd96b50f3b8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12442414280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=176a7318280000

Reported-by: syzbot+8fb64a61fdd96b50f3b8@syzkaller.appspotmail.com
Fixes: d82dcd9e21b7 ("reiserfs: Add security prefix to xattr name in reiserfs_security_write()")

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

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