Re: [syzbot] BUG: using smp_processor_id() in preemptible code in radix_tree_node_alloc

[syzbot]

syzbot suspects this issue was fixed by commit:

commit 43016d02cf6e46edfc4696452251d34bba0c0435
Author: Florian Westphal <fw@xxxxxxxxx>
Date:   Mon May 3 11:51:15 2021 +0000

    netfilter: arptables: use pernet ops struct during unregister

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=12dfdf47d00000
start commit:   acf25aa6 Merge tag 'Smack-for-5.8' of git://github.com/csc..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=5263d9b5bce03c67
dashboard link: https://syzkaller.appspot.com/bug?extid=3eec59e770685e3dc879
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=15bd4c1e100000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1520c9de100000

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

#syz fix: netfilter: arptables: use pernet ops struct during unregister

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