Forwarded: Re: [syzbot] WARNING in firmware_fallback_sysfs

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Subject: Re: [syzbot] WARNING in firmware_fallback_sysfs
Author: xujiahao@xxxxxxxxxxxxxxxxxxxx

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

Testing the attached patch, which stops WARN_ON() from firing when
usermodehelper_read_trylock() fails because the usermode helper is
already disabled during system shutdown.