syzbot suspects this issue was fixed by commit:

commit 363eaa3a450abb4e63bd6e3ad79d1f7a0f717814
Author: Shuah Khan [off-list ref]
Date:   Tue Mar 30 01:36:51 2021 +0000

    usbip: synchronize event handler with sysfs code paths

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=114c0579d00000
start commit:   d4961772 Merge tag 'clk-fixes-for-linus' of git://git.kern..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=9320464bf47598bd
dashboard link: https://syzkaller.appspot.com/bug?extid=b4a81dc8727e513f364d
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=126d1de9d00000

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

#syz fix: usbip: synchronize event handler with sysfs code paths

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