linux-kernel - [rcu:dev 122/125] drivers/mtd/chips/cfi_util.o: warning: objtool: cfi_qry_mode_on()+0x80: return with modified stack frame

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Date:   Sat, 23 Jun 2018 15:06:18 +0800
From:   kbuild test robot <lkp@...el.com>
To:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        Xi Ruoyao <ryxi@....xidian.edu.cn>
Subject: [rcu:dev 122/125] drivers/mtd/chips/cfi_util.o: warning: objtool:
 cfi_qry_mode_on()+0x80: return with modified stack frame

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev
head:   4dfdd9da6e69ad1080b91b1e537dfe5a85d78ce1
commit: 31465c86551744dd4b95ff89a4be3e8f52bea30c [122/125] EXP kbuild: Fix mismatched if/endif pairs
config: x86_64-randconfig-g0-06231355 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        git checkout 31465c86551744dd4b95ff89a4be3e8f52bea30c
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

>> drivers/mtd/chips/cfi_util.o: warning: objtool: cfi_qry_mode_on()+0x80: return with modified stack frame
>> drivers/mtd/chips/cfi_util.o: warning: objtool: cfi_qry_mode_on()+0x0: stack state mismatch: cfa1=-4-32 cfa2=7+8

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Download attachment ".config.gz" of type "application/gzip" (27934 bytes)