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SubjectRe: [syzbot] [btrfs?] kernel BUG in insert_state_fast
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syzbot has bisected this issue to:

commit 05fd9564e9faf0f23b4676385e27d9405cef6637
Author: Darrick J. Wong <djwong@kernel.org>
Date: Mon Mar 14 17:55:32 2022 +0000

btrfs: fix fallocate to use file_modified to update permissions consistently

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=14ef1870480000
start commit: 644e9524388a Merge tag 'for-v6.1-rc' of git://git.kernel.o..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=16ef1870480000
console output: https://syzkaller.appspot.com/x/log.txt?x=12ef1870480000
kernel config: https://syzkaller.appspot.com/x/.config?x=8d01b6e3197974dd
dashboard link: https://syzkaller.appspot.com/bug?extid=9ce4a36127ca92b59677
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12806381880000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=127f33c5880000

Reported-by: syzbot+9ce4a36127ca92b59677@syzkaller.appspotmail.com
Fixes: 05fd9564e9fa ("btrfs: fix fallocate to use file_modified to update permissions consistently")

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

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