Forwarded: [syzbot test] WARNING in usb_composite_setup_continue

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Subject: [syzbot test] WARNING in usb_composite_setup_continue
Author: tkdkei@xxxxxxxxxx

Hello,

The baseline test stopped first at WARNING in __fsg_is_set. Please test the attached f_mass_storage patch so we can determine whether the original WARNING in usb_composite_setup_continue still reproduces on the current USB testing branch.

#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing

Thanks,
Keisuke Tsukuda