syzbot has bisected this issue to:
commit a33df75c6328bf40078b35f2040d8e54d574c357
Author: Christoph Hellwig <hch@xxxxxx>
Date: Sun Jan 24 10:02:41 2021 +0000
block: use an xarray for disk->part_tbl
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=17989906d00000
start commit: 1c273e10 Merge tag 'zonefs-5.12-rc4' of git://git.kernel.o..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=14589906d00000
console output: https://syzkaller.appspot.com/x/log.txt?x=10589906d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=6abda3336c698a07
dashboard link: https://syzkaller.appspot.com/bug?extid=8fede7e30c7cee0de139
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13dfe8bed00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=155a117cd00000
Reported-by: syzbot+8fede7e30c7cee0de139@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: a33df75c6328 ("block: use an xarray for disk->part_tbl")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
