Hi Seiji,

FYI, kernel build failed on

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux.git next
head:   d1e063c70297b3b5b783a7bbb8e29f34db7996f8
commit: 1a1df768ea4e25ff0cdc60e93e41e2f6e2e2b9a9 efi_pstore: Avoid deadlock in non-blocking paths
date:   14 hours ago
config: i386-randconfig-b035 (attached as .config)

All error/warnings:

>> ERROR: "pstore_cannot_block_path" [drivers/firmware/efivars.ko] undefined!

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0-DAY kernel build testing backend         Open Source Technology Center
Fengguang Wu, Yuanhan Liu                              Intel Corporation