linux-kernel - drivers/acpi/.tmp_acpi_processor.o: warning: objtool: acpi_duplicate_processor_id()+0x49: stack state mismatch: cfa1=7+8 cfa2=6+16

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Date:   Wed, 28 Nov 2018 17:05:41 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Alexander Popov <alex.popov@...ux.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Kees Cook <keescook@...omium.org>
Subject: drivers/acpi/.tmp_acpi_processor.o: warning: objtool:
 acpi_duplicate_processor_id()+0x49: stack state mismatch: cfa1=7+8 cfa2=6+16

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ef78e5ec9214376c5cb989f5da70b02d0c117b66
commit: 10e9ae9fabaf96c8e5227c1cd4827d58b3aa406d gcc-plugins: Add STACKLEAK plugin for tracking the kernel stack
date:   3 months ago
config: x86_64-randconfig-g0-11281534 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        git checkout 10e9ae9fabaf96c8e5227c1cd4827d58b3aa406d
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

>> drivers/acpi/.tmp_acpi_processor.o: warning: objtool: acpi_duplicate_processor_id()+0x49: stack state mismatch: cfa1=7+8 cfa2=6+16

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Download attachment ".config.gz" of type "application/gzip" (31912 bytes)